/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.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 18:14:52,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 18:14:52,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 18:14:52,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 18:14:52,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 18:14:52,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 18:14:52,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 18:14:52,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 18:14:52,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 18:14:52,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 18:14:52,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 18:14:52,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 18:14:52,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 18:14:52,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 18:14:52,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 18:14:52,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 18:14:52,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 18:14:52,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 18:14:52,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 18:14:52,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 18:14:52,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 18:14:52,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 18:14:52,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 18:14:52,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 18:14:52,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 18:14:52,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 18:14:52,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 18:14:52,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 18:14:52,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 18:14:52,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 18:14:52,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 18:14:52,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 18:14:52,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 18:14:52,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 18:14:52,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 18:14:52,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 18:14:52,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 18:14:52,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 18:14:52,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 18:14:52,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 18:14:52,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 18:14:52,420 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 18:14:52,441 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 18:14:52,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 18:14:52,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 18:14:52,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 18:14:52,443 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 18:14:52,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 18:14:52,443 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 18:14:52,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 18:14:52,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 18:14:52,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 18:14:52,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 18:14:52,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 18:14:52,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 18:14:52,444 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 18:14:52,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 18:14:52,445 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 18:14:52,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 18:14:52,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 18:14:52,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 18:14:52,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 18:14:52,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 18:14:52,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 18:14:52,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 18:14:52,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 18:14:52,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 18:14:52,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 18:14:52,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 18:14:52,447 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 18:14:52,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 18:14:52,448 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 18:14:52,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 18:14:52,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 18:14:52,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 18:14:52,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 18:14:52,743 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 18:14:52,743 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 18:14:52,745 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2019-12-27 18:14:52,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d82529f/8dcff1331be34f72815b63530c1273ca/FLAG05950fd66 [2019-12-27 18:14:53,321 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 18:14:53,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2019-12-27 18:14:53,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d82529f/8dcff1331be34f72815b63530c1273ca/FLAG05950fd66 [2019-12-27 18:14:53,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d82529f/8dcff1331be34f72815b63530c1273ca [2019-12-27 18:14:53,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 18:14:53,595 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 18:14:53,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 18:14:53,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 18:14:53,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 18:14:53,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:14:53" (1/1) ... [2019-12-27 18:14:53,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b973043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:53, skipping insertion in model container [2019-12-27 18:14:53,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:14:53" (1/1) ... [2019-12-27 18:14:53,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 18:14:53,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 18:14:54,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:14:54,115 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 18:14:54,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:14:54,258 INFO L208 MainTranslator]: Completed translation [2019-12-27 18:14:54,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:54 WrapperNode [2019-12-27 18:14:54,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 18:14:54,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 18:14:54,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 18:14:54,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 18:14:54,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:54" (1/1) ... [2019-12-27 18:14:54,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:54" (1/1) ... [2019-12-27 18:14:54,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 18:14:54,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 18:14:54,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 18:14:54,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 18:14:54,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:54" (1/1) ... [2019-12-27 18:14:54,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:54" (1/1) ... [2019-12-27 18:14:54,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:54" (1/1) ... [2019-12-27 18:14:54,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:54" (1/1) ... [2019-12-27 18:14:54,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:54" (1/1) ... [2019-12-27 18:14:54,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:54" (1/1) ... [2019-12-27 18:14:54,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:54" (1/1) ... [2019-12-27 18:14:54,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 18:14:54,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 18:14:54,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 18:14:54,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 18:14:54,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:54" (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 18:14:54,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 18:14:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 18:14:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 18:14:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 18:14:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 18:14:54,404 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 18:14:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 18:14:54,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 18:14:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 18:14:54,406 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 18:14:54,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 18:14:54,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 18:14:54,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 18:14:54,408 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 18:14:54,782 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 18:14:54,783 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 18:14:54,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:14:54 BoogieIcfgContainer [2019-12-27 18:14:54,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 18:14:54,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 18:14:54,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 18:14:54,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 18:14:54,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 06:14:53" (1/3) ... [2019-12-27 18:14:54,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f6fe71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:14:54, skipping insertion in model container [2019-12-27 18:14:54,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:14:54" (2/3) ... [2019-12-27 18:14:54,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f6fe71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:14:54, skipping insertion in model container [2019-12-27 18:14:54,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:14:54" (3/3) ... [2019-12-27 18:14:54,792 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2019-12-27 18:14:54,800 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 18:14:54,801 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 18:14:54,808 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 18:14:54,809 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 18:14:54,832 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,833 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,833 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,833 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,834 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,834 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,835 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,835 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,835 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,835 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,836 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,836 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,836 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,837 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,837 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,837 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,837 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,838 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,841 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,842 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,842 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,842 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,848 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,848 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,848 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,849 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,851 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,851 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,852 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,852 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:14:54,864 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 18:14:54,880 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 18:14:54,881 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 18:14:54,881 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 18:14:54,881 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 18:14:54,881 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 18:14:54,881 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 18:14:54,882 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 18:14:54,882 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 18:14:54,895 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions [2019-12-27 18:14:54,897 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-27 18:14:54,941 INFO L132 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-27 18:14:54,941 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:14:54,947 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 18:14:54,950 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-27 18:14:54,969 INFO L132 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-27 18:14:54,969 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:14:54,971 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 18:14:54,973 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 18:14:54,974 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 18:14:56,466 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-12-27 18:14:56,610 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-27 18:14:56,610 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-27 18:14:56,613 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-27 18:14:56,623 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-27 18:14:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-27 18:14:56,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 18:14:56,632 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:14:56,633 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:14:56,633 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:14:56,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:14:56,641 INFO L82 PathProgramCache]: Analyzing trace with hash 2019279745, now seen corresponding path program 1 times [2019-12-27 18:14:56,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:14:56,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325051876] [2019-12-27 18:14:56,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:14:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:14:56,879 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 18:14:56,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325051876] [2019-12-27 18:14:56,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:14:56,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 18:14:56,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [256830689] [2019-12-27 18:14:56,883 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:14:56,889 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:14:56,902 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 18:14:56,902 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:14:56,905 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:14:56,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 18:14:56,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:14:56,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 18:14:56,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:14:56,919 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-27 18:14:56,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:14:56,951 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-27 18:14:56,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 18:14:56,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 18:14:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:14:56,982 INFO L225 Difference]: With dead ends: 42 [2019-12-27 18:14:56,982 INFO L226 Difference]: Without dead ends: 34 [2019-12-27 18:14:56,984 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 18:14:57,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-27 18:14:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-27 18:14:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-27 18:14:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-27 18:14:57,036 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-27 18:14:57,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:14:57,038 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-27 18:14:57,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 18:14:57,038 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-27 18:14:57,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 18:14:57,040 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:14:57,041 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:14:57,045 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:14:57,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:14:57,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1826755775, now seen corresponding path program 1 times [2019-12-27 18:14:57,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:14:57,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019018327] [2019-12-27 18:14:57,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:14:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:14:57,163 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 18:14:57,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019018327] [2019-12-27 18:14:57,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:14:57,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:14:57,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [545904265] [2019-12-27 18:14:57,164 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:14:57,165 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:14:57,170 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 9 transitions. [2019-12-27 18:14:57,173 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:14:57,173 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:14:57,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:14:57,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:14:57,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:14:57,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:14:57,175 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-27 18:14:57,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:14:57,202 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2019-12-27 18:14:57,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:14:57,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-27 18:14:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:14:57,203 INFO L225 Difference]: With dead ends: 36 [2019-12-27 18:14:57,203 INFO L226 Difference]: Without dead ends: 28 [2019-12-27 18:14:57,204 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 18:14:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-27 18:14:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-27 18:14:57,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-27 18:14:57,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2019-12-27 18:14:57,210 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 9 [2019-12-27 18:14:57,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:14:57,210 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2019-12-27 18:14:57,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:14:57,211 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2019-12-27 18:14:57,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 18:14:57,211 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:14:57,211 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:14:57,212 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:14:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:14:57,212 INFO L82 PathProgramCache]: Analyzing trace with hash -794534279, now seen corresponding path program 1 times [2019-12-27 18:14:57,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:14:57,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405570914] [2019-12-27 18:14:57,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:14:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:14:57,276 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 18:14:57,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405570914] [2019-12-27 18:14:57,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:14:57,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 18:14:57,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1172902494] [2019-12-27 18:14:57,277 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:14:57,278 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:14:57,281 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 14 transitions. [2019-12-27 18:14:57,281 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:14:57,282 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:14:57,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 18:14:57,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:14:57,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 18:14:57,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:14:57,284 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand 3 states. [2019-12-27 18:14:57,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:14:57,289 INFO L93 Difference]: Finished difference Result 27 states and 45 transitions. [2019-12-27 18:14:57,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 18:14:57,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-27 18:14:57,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:14:57,290 INFO L225 Difference]: With dead ends: 27 [2019-12-27 18:14:57,291 INFO L226 Difference]: Without dead ends: 27 [2019-12-27 18:14:57,291 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 18:14:57,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-27 18:14:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-12-27 18:14:57,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-27 18:14:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 45 transitions. [2019-12-27 18:14:57,295 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 45 transitions. Word has length 10 [2019-12-27 18:14:57,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:14:57,296 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 45 transitions. [2019-12-27 18:14:57,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 18:14:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 45 transitions. [2019-12-27 18:14:57,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 18:14:57,297 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:14:57,297 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:14:57,297 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:14:57,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:14:57,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1700901458, now seen corresponding path program 1 times [2019-12-27 18:14:57,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:14:57,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897783771] [2019-12-27 18:14:57,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:14:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:14:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:14:57,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897783771] [2019-12-27 18:14:57,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:14:57,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:14:57,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1973708366] [2019-12-27 18:14:57,359 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:14:57,360 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:14:57,364 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 18 states and 23 transitions. [2019-12-27 18:14:57,364 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:14:57,364 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:14:57,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:14:57,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:14:57,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:14:57,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:14:57,366 INFO L87 Difference]: Start difference. First operand 27 states and 45 transitions. Second operand 4 states. [2019-12-27 18:14:57,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:14:57,390 INFO L93 Difference]: Finished difference Result 29 states and 46 transitions. [2019-12-27 18:14:57,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:14:57,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 18:14:57,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:14:57,392 INFO L225 Difference]: With dead ends: 29 [2019-12-27 18:14:57,392 INFO L226 Difference]: Without dead ends: 17 [2019-12-27 18:14:57,393 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 18:14:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-27 18:14:57,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-27 18:14:57,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-27 18:14:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-27 18:14:57,396 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2019-12-27 18:14:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:14:57,396 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-27 18:14:57,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:14:57,397 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-27 18:14:57,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 18:14:57,397 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:14:57,397 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:14:57,397 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:14:57,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:14:57,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1139321736, now seen corresponding path program 2 times [2019-12-27 18:14:57,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:14:57,399 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383654782] [2019-12-27 18:14:57,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:14:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:14:57,449 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 18:14:57,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383654782] [2019-12-27 18:14:57,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:14:57,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 18:14:57,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [472127157] [2019-12-27 18:14:57,451 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:14:57,455 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:14:57,457 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 14 states and 15 transitions. [2019-12-27 18:14:57,457 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:14:57,506 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 2 times. [2019-12-27 18:14:57,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 18:14:57,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:14:57,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 18:14:57,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 18:14:57,508 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2019-12-27 18:14:57,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:14:57,537 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-12-27 18:14:57,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:14:57,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-27 18:14:57,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:14:57,538 INFO L225 Difference]: With dead ends: 16 [2019-12-27 18:14:57,538 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 18:14:57,539 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 18:14:57,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 18:14:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 18:14:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 18:14:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 18:14:57,540 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 18:14:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:14:57,540 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 18:14:57,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 18:14:57,540 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 18:14:57,540 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 18:14:57,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 06:14:57 BasicIcfg [2019-12-27 18:14:57,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 18:14:57,545 INFO L168 Benchmark]: Toolchain (without parser) took 3950.88 ms. Allocated memory was 137.9 MB in the beginning and 248.0 MB in the end (delta: 110.1 MB). Free memory was 99.5 MB in the beginning and 130.3 MB in the end (delta: -30.8 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. [2019-12-27 18:14:57,546 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 137.9 MB. Free memory is still 119.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-12-27 18:14:57,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.75 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.3 MB in the beginning and 159.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2019-12-27 18:14:57,548 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.10 ms. Allocated memory is still 201.9 MB. Free memory was 159.0 MB in the beginning and 156.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-12-27 18:14:57,549 INFO L168 Benchmark]: Boogie Preprocessor took 24.06 ms. Allocated memory is still 201.9 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 18:14:57,549 INFO L168 Benchmark]: RCFGBuilder took 450.12 ms. Allocated memory is still 201.9 MB. Free memory was 155.0 MB in the beginning and 134.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2019-12-27 18:14:57,550 INFO L168 Benchmark]: TraceAbstraction took 2758.33 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 134.0 MB in the beginning and 130.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB. [2019-12-27 18:14:57,555 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 137.9 MB. Free memory is still 119.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.75 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.3 MB in the beginning and 159.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.10 ms. Allocated memory is still 201.9 MB. Free memory was 159.0 MB in the beginning and 156.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.06 ms. Allocated memory is still 201.9 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.12 ms. Allocated memory is still 201.9 MB. Free memory was 155.0 MB in the beginning and 134.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2758.33 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 134.0 MB in the beginning and 130.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 49.9 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, 0.1s 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, 0.0s 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...