/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/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 18:32:59,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 18:32:59,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 18:32:59,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 18:32:59,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 18:32:59,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 18:32:59,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 18:32:59,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 18:32:59,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 18:32:59,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 18:32:59,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 18:32:59,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 18:32:59,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 18:32:59,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 18:32:59,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 18:32:59,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 18:32:59,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 18:32:59,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 18:32:59,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 18:32:59,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 18:32:59,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 18:32:59,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 18:32:59,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 18:32:59,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 18:32:59,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 18:32:59,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 18:32:59,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 18:32:59,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 18:32:59,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 18:32:59,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 18:32:59,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 18:32:59,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 18:32:59,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 18:32:59,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 18:32:59,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 18:32:59,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 18:32:59,409 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 18:32:59,423 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 18:32:59,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 18:32:59,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 18:32:59,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 18:32:59,426 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 18:32:59,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 18:32:59,427 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 18:32:59,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 18:32:59,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 18:32:59,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 18:32:59,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 18:32:59,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 18:32:59,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 18:32:59,430 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 18:32:59,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 18:32:59,430 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 18:32:59,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 18:32:59,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 18:32:59,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 18:32:59,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 18:32:59,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 18:32:59,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 18:32:59,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 18:32:59,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 18:32:59,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 18:32:59,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 18:32:59,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 18:32:59,433 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 18:32:59,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 18:32:59,433 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 18:32:59,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 18:32:59,707 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 18:32:59,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 18:32:59,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 18:32:59,725 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 18:32:59,725 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 18:32:59,726 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2019-12-27 18:32:59,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ded8193/81784582ff12404883456717c887c570/FLAG794d558ee [2019-12-27 18:33:00,387 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 18:33:00,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2019-12-27 18:33:00,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ded8193/81784582ff12404883456717c887c570/FLAG794d558ee [2019-12-27 18:33:00,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ded8193/81784582ff12404883456717c887c570 [2019-12-27 18:33:00,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 18:33:00,676 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 18:33:00,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 18:33:00,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 18:33:00,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 18:33:00,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:33:00" (1/1) ... [2019-12-27 18:33:00,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f84663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:33:00, skipping insertion in model container [2019-12-27 18:33:00,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:33:00" (1/1) ... [2019-12-27 18:33:00,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 18:33:00,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 18:33:01,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:33:01,180 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 18:33:01,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:33:01,315 INFO L208 MainTranslator]: Completed translation [2019-12-27 18:33:01,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:33:01 WrapperNode [2019-12-27 18:33:01,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 18:33:01,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 18:33:01,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 18:33:01,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 18:33:01,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:33:01" (1/1) ... [2019-12-27 18:33:01,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:33:01" (1/1) ... [2019-12-27 18:33:01,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 18:33:01,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 18:33:01,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 18:33:01,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 18:33:01,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:33:01" (1/1) ... [2019-12-27 18:33:01,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:33:01" (1/1) ... [2019-12-27 18:33:01,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:33:01" (1/1) ... [2019-12-27 18:33:01,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:33:01" (1/1) ... [2019-12-27 18:33:01,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:33:01" (1/1) ... [2019-12-27 18:33:01,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:33:01" (1/1) ... [2019-12-27 18:33:01,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:33:01" (1/1) ... [2019-12-27 18:33:01,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 18:33:01,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 18:33:01,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 18:33:01,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 18:33:01,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:33:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 18:33:01,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 18:33:01,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 18:33:01,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 18:33:01,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 18:33:01,476 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 18:33:01,476 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 18:33:01,479 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 18:33:01,479 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 18:33:01,479 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 18:33:01,479 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 18:33:01,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 18:33:01,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 18:33:01,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 18:33:01,481 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 18:33:01,856 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 18:33:01,857 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 18:33:01,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:33:01 BoogieIcfgContainer [2019-12-27 18:33:01,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 18:33:01,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 18:33:01,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 18:33:01,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 18:33:01,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 06:33:00" (1/3) ... [2019-12-27 18:33:01,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a61eea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:33:01, skipping insertion in model container [2019-12-27 18:33:01,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:33:01" (2/3) ... [2019-12-27 18:33:01,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a61eea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:33:01, skipping insertion in model container [2019-12-27 18:33:01,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:33:01" (3/3) ... [2019-12-27 18:33:01,866 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2019-12-27 18:33:01,875 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 18:33:01,875 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 18:33:01,883 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 18:33:01,884 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 18:33:01,912 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,912 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,912 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,913 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,913 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,913 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,914 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,914 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,914 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,915 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,915 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,915 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,916 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,916 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,916 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,917 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,917 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,917 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,921 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,922 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,922 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,922 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,930 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,932 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,932 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,933 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,935 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,936 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,936 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,936 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:33:01,952 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 18:33:01,977 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 18:33:01,977 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 18:33:01,978 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 18:33:01,978 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 18:33:01,979 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 18:33:01,979 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 18:33:01,979 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 18:33:01,980 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 18:33:01,999 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-27 18:33:02,001 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-27 18:33:02,047 INFO L132 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-27 18:33:02,048 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:33:02,056 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 18:33:02,059 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-27 18:33:02,082 INFO L132 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-27 18:33:02,082 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:33:02,084 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 18:33:02,088 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 18:33:02,089 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 18:33:03,467 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-12-27 18:33:03,640 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-12-27 18:33:03,718 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-27 18:33:03,718 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-27 18:33:03,723 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-27 18:33:03,737 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-27 18:33:03,740 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-27 18:33:03,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 18:33:03,748 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:33:03,749 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:33:03,750 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:33:03,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:33:03,759 INFO L82 PathProgramCache]: Analyzing trace with hash -53140901, now seen corresponding path program 1 times [2019-12-27 18:33:03,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:33:03,775 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903557493] [2019-12-27 18:33:03,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:33:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:33:04,013 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 18:33:04,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903557493] [2019-12-27 18:33:04,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:33:04,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 18:33:04,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [67959130] [2019-12-27 18:33:04,019 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:33:04,028 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:33:04,046 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 18:33:04,046 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:33:04,050 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:33:04,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 18:33:04,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:33:04,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 18:33:04,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:33:04,074 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-27 18:33:04,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:33:04,106 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-27 18:33:04,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 18:33:04,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 18:33:04,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:33:04,139 INFO L225 Difference]: With dead ends: 42 [2019-12-27 18:33:04,139 INFO L226 Difference]: Without dead ends: 34 [2019-12-27 18:33:04,141 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 18:33:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-27 18:33:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-27 18:33:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-27 18:33:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-27 18:33:04,192 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-27 18:33:04,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:33:04,193 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-27 18:33:04,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 18:33:04,194 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-27 18:33:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 18:33:04,197 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:33:04,200 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:33:04,201 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:33:04,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:33:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1647367954, now seen corresponding path program 1 times [2019-12-27 18:33:04,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:33:04,210 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591181856] [2019-12-27 18:33:04,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:33:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:33:04,341 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 18:33:04,342 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591181856] [2019-12-27 18:33:04,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:33:04,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:33:04,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1247963788] [2019-12-27 18:33:04,343 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:33:04,344 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:33:04,347 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 9 transitions. [2019-12-27 18:33:04,347 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:33:04,347 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:33:04,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:33:04,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:33:04,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:33:04,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:33:04,350 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-27 18:33:04,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:33:04,371 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2019-12-27 18:33:04,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:33:04,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-27 18:33:04,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:33:04,373 INFO L225 Difference]: With dead ends: 36 [2019-12-27 18:33:04,373 INFO L226 Difference]: Without dead ends: 28 [2019-12-27 18:33:04,374 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 18:33:04,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-27 18:33:04,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-27 18:33:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-27 18:33:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2019-12-27 18:33:04,379 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 9 [2019-12-27 18:33:04,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:33:04,379 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2019-12-27 18:33:04,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:33:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2019-12-27 18:33:04,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 18:33:04,380 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:33:04,380 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:33:04,381 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:33:04,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:33:04,381 INFO L82 PathProgramCache]: Analyzing trace with hash 420225671, now seen corresponding path program 1 times [2019-12-27 18:33:04,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:33:04,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013409481] [2019-12-27 18:33:04,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:33:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:33:04,475 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 18:33:04,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013409481] [2019-12-27 18:33:04,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:33:04,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 18:33:04,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [889986280] [2019-12-27 18:33:04,477 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:33:04,479 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:33:04,481 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 14 transitions. [2019-12-27 18:33:04,482 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:33:04,485 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:33:04,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:33:04,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:33:04,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:33:04,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:33:04,486 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand 4 states. [2019-12-27 18:33:04,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:33:04,515 INFO L93 Difference]: Finished difference Result 35 states and 52 transitions. [2019-12-27 18:33:04,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 18:33:04,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-27 18:33:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:33:04,516 INFO L225 Difference]: With dead ends: 35 [2019-12-27 18:33:04,516 INFO L226 Difference]: Without dead ends: 19 [2019-12-27 18:33:04,517 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 18:33:04,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-12-27 18:33:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-12-27 18:33:04,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-27 18:33:04,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2019-12-27 18:33:04,520 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 10 [2019-12-27 18:33:04,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:33:04,521 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2019-12-27 18:33:04,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:33:04,521 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2019-12-27 18:33:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 18:33:04,522 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:33:04,522 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:33:04,522 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:33:04,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:33:04,522 INFO L82 PathProgramCache]: Analyzing trace with hash 119747757, now seen corresponding path program 1 times [2019-12-27 18:33:04,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:33:04,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303480610] [2019-12-27 18:33:04,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:33:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:33:04,588 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 18:33:04,588 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303480610] [2019-12-27 18:33:04,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:33:04,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 18:33:04,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1162579129] [2019-12-27 18:33:04,590 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:33:04,591 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:33:04,594 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 16 states and 19 transitions. [2019-12-27 18:33:04,594 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:33:04,595 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:33:04,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:33:04,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:33:04,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:33:04,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:33:04,597 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand 4 states. [2019-12-27 18:33:04,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:33:04,613 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2019-12-27 18:33:04,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:33:04,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 18:33:04,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:33:04,614 INFO L225 Difference]: With dead ends: 18 [2019-12-27 18:33:04,614 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 18:33:04,614 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 18:33:04,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 18:33:04,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 18:33:04,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 18:33:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 18:33:04,618 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 18:33:04,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:33:04,618 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 18:33:04,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:33:04,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 18:33:04,619 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 18:33:04,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 06:33:04 BasicIcfg [2019-12-27 18:33:04,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 18:33:04,628 INFO L168 Benchmark]: Toolchain (without parser) took 3951.26 ms. Allocated memory was 136.3 MB in the beginning and 252.2 MB in the end (delta: 115.9 MB). Free memory was 98.0 MB in the beginning and 152.6 MB in the end (delta: -54.5 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. [2019-12-27 18:33:04,629 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 136.3 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-12-27 18:33:04,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.30 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 97.8 MB in the beginning and 155.8 MB in the end (delta: -58.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2019-12-27 18:33:04,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.58 ms. Allocated memory is still 199.8 MB. Free memory was 155.8 MB in the beginning and 153.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 18:33:04,631 INFO L168 Benchmark]: Boogie Preprocessor took 27.99 ms. Allocated memory is still 199.8 MB. Free memory was 153.8 MB in the beginning and 152.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-27 18:33:04,632 INFO L168 Benchmark]: RCFGBuilder took 458.20 ms. Allocated memory is still 199.8 MB. Free memory was 152.4 MB in the beginning and 131.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-12-27 18:33:04,633 INFO L168 Benchmark]: TraceAbstraction took 2766.09 ms. Allocated memory was 199.8 MB in the beginning and 252.2 MB in the end (delta: 52.4 MB). Free memory was 131.0 MB in the beginning and 152.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2019-12-27 18:33:04,638 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 136.3 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 639.30 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 97.8 MB in the beginning and 155.8 MB in the end (delta: -58.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.58 ms. Allocated memory is still 199.8 MB. Free memory was 155.8 MB in the beginning and 153.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.99 ms. Allocated memory is still 199.8 MB. Free memory was 153.8 MB in the beginning and 152.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.20 ms. Allocated memory is still 199.8 MB. Free memory was 152.4 MB in the beginning and 131.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2766.09 ms. Allocated memory was 199.8 MB in the beginning and 252.2 MB in the end (delta: 52.4 MB). Free memory was 131.0 MB in the beginning and 152.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 63 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 230 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 467 CheckedPairsTotal, 44 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 22 SDslu, 46 SDs, 0 SdLazy, 22 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 710 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...