/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-SemanticLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 18:14:46,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 18:14:46,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 18:14:46,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 18:14:46,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 18:14:46,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 18:14:46,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 18:14:46,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 18:14:46,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 18:14:46,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 18:14:46,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 18:14:46,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 18:14:46,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 18:14:46,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 18:14:46,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 18:14:46,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 18:14:46,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 18:14:46,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 18:14:46,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 18:14:46,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 18:14:46,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 18:14:46,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 18:14:46,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 18:14:46,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 18:14:46,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 18:14:46,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 18:14:46,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 18:14:46,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 18:14:46,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 18:14:46,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 18:14:46,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 18:14:46,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 18:14:46,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 18:14:46,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 18:14:46,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 18:14:46,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 18:14:46,387 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-SemanticLbe-MCR.epf [2019-12-27 18:14:46,401 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 18:14:46,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 18:14:46,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 18:14:46,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 18:14:46,403 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 18:14:46,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 18:14:46,403 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 18:14:46,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 18:14:46,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 18:14:46,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 18:14:46,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 18:14:46,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 18:14:46,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 18:14:46,405 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 18:14:46,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 18:14:46,405 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 18:14:46,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 18:14:46,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 18:14:46,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 18:14:46,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 18:14:46,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 18:14:46,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 18:14:46,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 18:14:46,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 18:14:46,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 18:14:46,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 18:14:46,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 18:14:46,407 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 18:14:46,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 18:14:46,408 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 18:14:46,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 18:14:46,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 18:14:46,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 18:14:46,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 18:14:46,711 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 18:14:46,711 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 18:14:46,714 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2019-12-27 18:14:46,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dcc68ff5/9cb8dad29848454c9c2cb35b5e70d7c4/FLAG53e61c9a3 [2019-12-27 18:14:47,339 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 18:14:47,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2019-12-27 18:14:47,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dcc68ff5/9cb8dad29848454c9c2cb35b5e70d7c4/FLAG53e61c9a3 [2019-12-27 18:14:47,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dcc68ff5/9cb8dad29848454c9c2cb35b5e70d7c4 [2019-12-27 18:14:47,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 18:14:47,591 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 18:14:47,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 18:14:47,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 18:14:47,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 18:14:47,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:14:47" (1/1) ... [2019-12-27 18:14:47,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614e4f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:47, skipping insertion in model container [2019-12-27 18:14:47,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:14:47" (1/1) ... [2019-12-27 18:14:47,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 18:14:47,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 18:14:48,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:14:48,142 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 18:14:48,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:14:48,274 INFO L208 MainTranslator]: Completed translation [2019-12-27 18:14:48,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:48 WrapperNode [2019-12-27 18:14:48,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 18:14:48,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 18:14:48,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 18:14:48,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 18:14:48,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:48" (1/1) ... [2019-12-27 18:14:48,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:48" (1/1) ... [2019-12-27 18:14:48,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 18:14:48,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 18:14:48,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 18:14:48,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 18:14:48,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:48" (1/1) ... [2019-12-27 18:14:48,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:48" (1/1) ... [2019-12-27 18:14:48,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:48" (1/1) ... [2019-12-27 18:14:48,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:48" (1/1) ... [2019-12-27 18:14:48,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:48" (1/1) ... [2019-12-27 18:14:48,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:48" (1/1) ... [2019-12-27 18:14:48,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:48" (1/1) ... [2019-12-27 18:14:48,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 18:14:48,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 18:14:48,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 18:14:48,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 18:14:48,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:48" (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 [2019-12-27 18:14:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 18:14:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 18:14:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 18:14:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 18:14:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 18:14:48,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 18:14:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 18:14:48,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 18:14:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 18:14:48,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 18:14:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 18:14:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 18:14:48,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 18:14:48,416 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 18:14:48,792 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 18:14:48,793 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 18:14:48,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:14:48 BoogieIcfgContainer [2019-12-27 18:14:48,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 18:14:48,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 18:14:48,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 18:14:48,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 18:14:48,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 06:14:47" (1/3) ... [2019-12-27 18:14:48,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3554d5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:14:48, skipping insertion in model container [2019-12-27 18:14:48,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:48" (2/3) ... [2019-12-27 18:14:48,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3554d5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:14:48, skipping insertion in model container [2019-12-27 18:14:48,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:14:48" (3/3) ... [2019-12-27 18:14:48,802 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2019-12-27 18:14:48,810 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 18:14:48,811 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 18:14:48,818 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 18:14:48,819 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 18:14:48,850 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,851 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,851 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,852 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,852 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,852 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,853 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,853 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,853 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,854 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,854 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,854 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,855 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,855 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,855 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,856 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,856 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,856 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,860 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,861 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,861 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,861 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,868 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,868 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,868 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,869 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,871 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,872 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,872 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,872 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:48,888 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 18:14:48,909 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 18:14:48,910 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 18:14:48,910 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 18:14:48,910 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 18:14:48,910 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 18:14:48,911 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 18:14:48,911 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 18:14:48,911 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 18:14:48,925 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions [2019-12-27 18:14:48,927 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-27 18:14:48,974 INFO L132 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-27 18:14:48,974 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:14:48,981 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/50 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 18:14:48,983 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-27 18:14:49,004 INFO L132 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-27 18:14:49,004 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:14:49,006 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/50 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 18:14:49,008 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 18:14:49,009 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 18:14:50,492 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-12-27 18:14:50,634 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-27 18:14:50,635 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-27 18:14:50,638 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-27 18:14:50,647 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-27 18:14:50,649 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-27 18:14:50,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 18:14:50,656 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:14:50,656 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:14:50,657 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:14:50,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:14:50,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2019279745, now seen corresponding path program 1 times [2019-12-27 18:14:50,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:14:50,672 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353425991] [2019-12-27 18:14:50,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:14:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:14:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:14:50,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353425991] [2019-12-27 18:14:50,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:14:50,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 18:14:50,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1553719166] [2019-12-27 18:14:50,953 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:14:50,958 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:14:50,973 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 18:14:50,974 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:14:50,978 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:14:50,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 18:14:50,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:14:50,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 18:14:50,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:14:50,997 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-27 18:14:51,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:14:51,023 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-27 18:14:51,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 18:14:51,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 18:14:51,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:14:51,051 INFO L225 Difference]: With dead ends: 42 [2019-12-27 18:14:51,051 INFO L226 Difference]: Without dead ends: 34 [2019-12-27 18:14:51,053 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 [2019-12-27 18:14:51,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-27 18:14:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-27 18:14:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-27 18:14:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-27 18:14:51,103 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-27 18:14:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:14:51,104 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-27 18:14:51,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 18:14:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-27 18:14:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 18:14:51,108 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:14:51,108 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:14:51,112 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:14:51,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:14:51,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1826755775, now seen corresponding path program 1 times [2019-12-27 18:14:51,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:14:51,121 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057507255] [2019-12-27 18:14:51,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:14:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:14:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:14:51,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057507255] [2019-12-27 18:14:51,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:14:51,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:14:51,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1352085182] [2019-12-27 18:14:51,234 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:14:51,235 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:14:51,238 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 9 transitions. [2019-12-27 18:14:51,238 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:14:51,239 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:14:51,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:14:51,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:14:51,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:14:51,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:14:51,241 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-27 18:14:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:14:51,262 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2019-12-27 18:14:51,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:14:51,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-27 18:14:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:14:51,263 INFO L225 Difference]: With dead ends: 36 [2019-12-27 18:14:51,263 INFO L226 Difference]: Without dead ends: 28 [2019-12-27 18:14:51,264 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 [2019-12-27 18:14:51,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-27 18:14:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-27 18:14:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-27 18:14:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2019-12-27 18:14:51,268 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 9 [2019-12-27 18:14:51,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:14:51,269 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2019-12-27 18:14:51,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:14:51,269 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2019-12-27 18:14:51,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 18:14:51,270 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:14:51,270 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:14:51,270 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:14:51,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:14:51,271 INFO L82 PathProgramCache]: Analyzing trace with hash -794534279, now seen corresponding path program 1 times [2019-12-27 18:14:51,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:14:51,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996563749] [2019-12-27 18:14:51,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:14:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:14:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:14:51,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996563749] [2019-12-27 18:14:51,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:14:51,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 18:14:51,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [631691777] [2019-12-27 18:14:51,337 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:14:51,338 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:14:51,341 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 14 transitions. [2019-12-27 18:14:51,341 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:14:51,342 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:14:51,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 18:14:51,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:14:51,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 18:14:51,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:14:51,344 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand 3 states. [2019-12-27 18:14:51,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:14:51,349 INFO L93 Difference]: Finished difference Result 27 states and 45 transitions. [2019-12-27 18:14:51,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 18:14:51,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-27 18:14:51,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:14:51,350 INFO L225 Difference]: With dead ends: 27 [2019-12-27 18:14:51,350 INFO L226 Difference]: Without dead ends: 27 [2019-12-27 18:14:51,351 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 [2019-12-27 18:14:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-27 18:14:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-12-27 18:14:51,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-27 18:14:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 45 transitions. [2019-12-27 18:14:51,355 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 45 transitions. Word has length 10 [2019-12-27 18:14:51,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:14:51,355 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 45 transitions. [2019-12-27 18:14:51,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 18:14:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 45 transitions. [2019-12-27 18:14:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 18:14:51,356 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:14:51,356 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:14:51,356 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:14:51,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:14:51,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1700901458, now seen corresponding path program 1 times [2019-12-27 18:14:51,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:14:51,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896761772] [2019-12-27 18:14:51,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:14:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:14:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:14:51,402 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896761772] [2019-12-27 18:14:51,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:14:51,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:14:51,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1037348561] [2019-12-27 18:14:51,403 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:14:51,404 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:14:51,407 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 18 states and 23 transitions. [2019-12-27 18:14:51,407 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:14:51,407 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:14:51,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:14:51,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:14:51,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:14:51,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:14:51,408 INFO L87 Difference]: Start difference. First operand 27 states and 45 transitions. Second operand 4 states. [2019-12-27 18:14:51,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:14:51,424 INFO L93 Difference]: Finished difference Result 29 states and 46 transitions. [2019-12-27 18:14:51,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:14:51,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 18:14:51,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:14:51,425 INFO L225 Difference]: With dead ends: 29 [2019-12-27 18:14:51,426 INFO L226 Difference]: Without dead ends: 17 [2019-12-27 18:14:51,426 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 [2019-12-27 18:14:51,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-27 18:14:51,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-27 18:14:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-27 18:14:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-27 18:14:51,429 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2019-12-27 18:14:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:14:51,429 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-27 18:14:51,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:14:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-27 18:14:51,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 18:14:51,430 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:14:51,430 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:14:51,430 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:14:51,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:14:51,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1139321736, now seen corresponding path program 2 times [2019-12-27 18:14:51,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:14:51,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041989148] [2019-12-27 18:14:51,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:14:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:14:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:14:51,467 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041989148] [2019-12-27 18:14:51,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:14:51,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 18:14:51,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [713469955] [2019-12-27 18:14:51,468 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:14:51,469 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:14:51,472 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 14 states and 15 transitions. [2019-12-27 18:14:51,472 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:14:51,513 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 2 times. [2019-12-27 18:14:51,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 18:14:51,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:14:51,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 18:14:51,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 18:14:51,514 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2019-12-27 18:14:51,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:14:51,537 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-12-27 18:14:51,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:14:51,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-27 18:14:51,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:14:51,538 INFO L225 Difference]: With dead ends: 16 [2019-12-27 18:14:51,538 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 18:14:51,538 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-27 18:14:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 18:14:51,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 18:14:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 18:14:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 18:14:51,539 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 18:14:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:14:51,539 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 18:14:51,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 18:14:51,540 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 18:14:51,540 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 18:14:51,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 06:14:51 BasicIcfg [2019-12-27 18:14:51,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 18:14:51,546 INFO L168 Benchmark]: Toolchain (without parser) took 3954.95 ms. Allocated memory was 138.9 MB in the beginning and 244.8 MB in the end (delta: 105.9 MB). Free memory was 102.9 MB in the beginning and 123.2 MB in the end (delta: -20.3 MB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2019-12-27 18:14:51,547 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-12-27 18:14:51,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.85 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 160.5 MB in the end (delta: -58.1 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2019-12-27 18:14:51,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.81 ms. Allocated memory is still 202.9 MB. Free memory was 160.5 MB in the beginning and 157.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-12-27 18:14:51,549 INFO L168 Benchmark]: Boogie Preprocessor took 26.39 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 156.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 18:14:51,550 INFO L168 Benchmark]: RCFGBuilder took 447.00 ms. Allocated memory is still 202.9 MB. Free memory was 156.6 MB in the beginning and 136.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-12-27 18:14:51,551 INFO L168 Benchmark]: TraceAbstraction took 2748.29 ms. Allocated memory was 202.9 MB in the beginning and 244.8 MB in the end (delta: 41.9 MB). Free memory was 135.4 MB in the beginning and 123.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. [2019-12-27 18:14:51,556 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 682.85 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 160.5 MB in the end (delta: -58.1 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.81 ms. Allocated memory is still 202.9 MB. Free memory was 160.5 MB in the beginning and 157.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.39 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 156.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.00 ms. Allocated memory is still 202.9 MB. Free memory was 156.6 MB in the beginning and 136.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2748.29 ms. Allocated memory was 202.9 MB in the beginning and 244.8 MB in the end (delta: 41.9 MB). Free memory was 135.4 MB in the beginning and 123.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 64 ProgramPointsBefore, 21 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 228 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 467 CheckedPairsTotal, 47 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, 55 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 23 SDslu, 41 SDs, 0 SdLazy, 22 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1062 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...