/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-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread/sigma.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 08:40:20,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 08:40:20,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 08:40:20,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 08:40:20,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 08:40:20,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 08:40:20,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 08:40:20,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 08:40:20,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 08:40:20,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 08:40:20,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 08:40:20,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 08:40:20,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 08:40:20,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 08:40:20,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 08:40:20,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 08:40:20,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 08:40:20,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 08:40:20,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 08:40:20,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 08:40:20,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 08:40:20,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 08:40:20,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 08:40:20,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 08:40:20,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 08:40:20,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 08:40:20,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 08:40:20,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 08:40:20,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 08:40:20,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 08:40:20,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 08:40:20,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 08:40:20,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 08:40:20,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 08:40:20,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 08:40:20,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 08:40:20,389 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-NoLbe.epf [2019-12-27 08:40:20,403 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 08:40:20,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 08:40:20,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 08:40:20,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 08:40:20,404 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 08:40:20,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 08:40:20,405 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 08:40:20,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 08:40:20,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 08:40:20,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 08:40:20,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 08:40:20,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 08:40:20,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 08:40:20,406 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 08:40:20,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 08:40:20,407 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 08:40:20,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 08:40:20,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 08:40:20,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 08:40:20,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 08:40:20,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 08:40:20,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 08:40:20,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 08:40:20,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 08:40:20,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 08:40:20,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 08:40:20,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 08:40:20,409 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2019-12-27 08:40:20,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 08:40:20,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 08:40:20,668 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 08:40:20,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 08:40:20,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 08:40:20,691 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 08:40:20,691 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 08:40:20,692 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sigma.i [2019-12-27 08:40:20,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/087f0aff8/d2e6ab1cbd1f4613a02194a0bb2bfd18/FLAG74930d70d [2019-12-27 08:40:21,455 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 08:40:21,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sigma.i [2019-12-27 08:40:21,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/087f0aff8/d2e6ab1cbd1f4613a02194a0bb2bfd18/FLAG74930d70d [2019-12-27 08:40:21,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/087f0aff8/d2e6ab1cbd1f4613a02194a0bb2bfd18 [2019-12-27 08:40:21,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 08:40:21,719 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 08:40:21,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 08:40:21,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 08:40:21,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 08:40:21,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 08:40:21" (1/1) ... [2019-12-27 08:40:21,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e248da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:40:21, skipping insertion in model container [2019-12-27 08:40:21,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 08:40:21" (1/1) ... [2019-12-27 08:40:21,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 08:40:21,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 08:40:22,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 08:40:22,378 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 08:40:22,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 08:40:22,628 INFO L208 MainTranslator]: Completed translation [2019-12-27 08:40:22,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:40:22 WrapperNode [2019-12-27 08:40:22,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 08:40:22,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 08:40:22,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 08:40:22,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 08:40:22,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:40:22" (1/1) ... [2019-12-27 08:40:22,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:40:22" (1/1) ... [2019-12-27 08:40:22,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 08:40:22,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 08:40:22,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 08:40:22,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 08:40:22,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:40:22" (1/1) ... [2019-12-27 08:40:22,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:40:22" (1/1) ... [2019-12-27 08:40:22,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:40:22" (1/1) ... [2019-12-27 08:40:22,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:40:22" (1/1) ... [2019-12-27 08:40:22,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:40:22" (1/1) ... [2019-12-27 08:40:22,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:40:22" (1/1) ... [2019-12-27 08:40:22,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:40:22" (1/1) ... [2019-12-27 08:40:22,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 08:40:22,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 08:40:22,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 08:40:22,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 08:40:22,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:40:22" (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 08:40:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 08:40:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-27 08:40:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 08:40:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 08:40:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 08:40:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-27 08:40:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-27 08:40:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2019-12-27 08:40:22,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2019-12-27 08:40:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 08:40:22,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 08:40:22,814 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 08:40:23,248 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 08:40:23,248 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-27 08:40:23,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 08:40:23 BoogieIcfgContainer [2019-12-27 08:40:23,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 08:40:23,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 08:40:23,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 08:40:23,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 08:40:23,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 08:40:21" (1/3) ... [2019-12-27 08:40:23,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d81ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 08:40:23, skipping insertion in model container [2019-12-27 08:40:23,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:40:22" (2/3) ... [2019-12-27 08:40:23,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d81ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 08:40:23, skipping insertion in model container [2019-12-27 08:40:23,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 08:40:23" (3/3) ... [2019-12-27 08:40:23,259 INFO L109 eAbstractionObserver]: Analyzing ICFG sigma.i [2019-12-27 08:40:23,269 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 08:40:23,270 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 08:40:23,278 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 08:40:23,279 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 08:40:23,304 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:23,305 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:23,305 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:23,305 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:23,327 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:23,328 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:23,331 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:23,332 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:23,332 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:23,332 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:23,351 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 08:40:23,366 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:40:23,367 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:40:23,367 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:40:23,367 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:40:23,367 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:40:23,367 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:40:23,367 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:40:23,368 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:40:23,378 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 74 transitions [2019-12-27 08:40:23,399 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 253 states. [2019-12-27 08:40:23,401 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states. [2019-12-27 08:40:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 08:40:23,410 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:23,411 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:23,412 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:23,418 INFO L82 PathProgramCache]: Analyzing trace with hash -937654746, now seen corresponding path program 1 times [2019-12-27 08:40:23,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:23,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306578991] [2019-12-27 08:40:23,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:23,614 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 08:40:23,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306578991] [2019-12-27 08:40:23,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:40:23,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 08:40:23,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686901430] [2019-12-27 08:40:23,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-27 08:40:23,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:40:23,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-27 08:40:23,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 08:40:23,640 INFO L87 Difference]: Start difference. First operand 253 states. Second operand 2 states. [2019-12-27 08:40:23,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:40:23,668 INFO L93 Difference]: Finished difference Result 253 states and 411 transitions. [2019-12-27 08:40:23,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-27 08:40:23,670 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-12-27 08:40:23,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:40:23,684 INFO L225 Difference]: With dead ends: 253 [2019-12-27 08:40:23,685 INFO L226 Difference]: Without dead ends: 214 [2019-12-27 08:40:23,688 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 08:40:23,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2019-12-27 08:40:23,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2019-12-27 08:40:23,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2019-12-27 08:40:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 348 transitions. [2019-12-27 08:40:23,740 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 348 transitions. Word has length 31 [2019-12-27 08:40:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:40:23,741 INFO L462 AbstractCegarLoop]: Abstraction has 214 states and 348 transitions. [2019-12-27 08:40:23,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-27 08:40:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 348 transitions. [2019-12-27 08:40:23,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 08:40:23,742 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:23,743 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:23,743 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:23,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:23,743 INFO L82 PathProgramCache]: Analyzing trace with hash -218464121, now seen corresponding path program 1 times [2019-12-27 08:40:23,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:23,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431091066] [2019-12-27 08:40:23,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:23,925 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 08:40:23,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431091066] [2019-12-27 08:40:23,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:40:23,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 08:40:23,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666020909] [2019-12-27 08:40:23,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:40:23,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:40:23,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:40:23,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:40:23,929 INFO L87 Difference]: Start difference. First operand 214 states and 348 transitions. Second operand 5 states. [2019-12-27 08:40:24,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:40:24,060 INFO L93 Difference]: Finished difference Result 144 states and 212 transitions. [2019-12-27 08:40:24,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:40:24,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-12-27 08:40:24,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:40:24,063 INFO L225 Difference]: With dead ends: 144 [2019-12-27 08:40:24,063 INFO L226 Difference]: Without dead ends: 144 [2019-12-27 08:40:24,064 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:40:24,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-12-27 08:40:24,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 139. [2019-12-27 08:40:24,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-12-27 08:40:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 207 transitions. [2019-12-27 08:40:24,077 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 207 transitions. Word has length 31 [2019-12-27 08:40:24,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:40:24,078 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 207 transitions. [2019-12-27 08:40:24,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:40:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 207 transitions. [2019-12-27 08:40:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-27 08:40:24,080 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:24,080 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:24,080 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:24,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:24,081 INFO L82 PathProgramCache]: Analyzing trace with hash 267978935, now seen corresponding path program 1 times [2019-12-27 08:40:24,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:24,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378134783] [2019-12-27 08:40:24,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:40:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:40:24,244 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 08:40:24,245 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 08:40:24,245 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 08:40:24,245 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-27 08:40:24,253 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,253 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,253 WARN L315 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,253 WARN L315 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,254 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,254 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,254 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,254 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,254 WARN L315 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,254 WARN L315 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,255 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,257 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,257 WARN L315 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,258 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,258 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,258 WARN L315 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,272 WARN L315 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,272 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,273 WARN L315 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,273 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,281 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 08:40:24,281 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:40:24,281 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:40:24,282 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:40:24,282 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:40:24,282 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:40:24,282 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:40:24,282 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:40:24,282 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:40:24,287 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 80 transitions [2019-12-27 08:40:24,344 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1398 states. [2019-12-27 08:40:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states. [2019-12-27 08:40:24,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 08:40:24,345 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:24,346 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:24,346 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:24,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:24,346 INFO L82 PathProgramCache]: Analyzing trace with hash -2002964362, now seen corresponding path program 1 times [2019-12-27 08:40:24,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:24,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778706423] [2019-12-27 08:40:24,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:24,410 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 08:40:24,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778706423] [2019-12-27 08:40:24,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:40:24,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 08:40:24,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303160780] [2019-12-27 08:40:24,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-27 08:40:24,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:40:24,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-27 08:40:24,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 08:40:24,415 INFO L87 Difference]: Start difference. First operand 1398 states. Second operand 2 states. [2019-12-27 08:40:24,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:40:24,441 INFO L93 Difference]: Finished difference Result 1398 states and 3268 transitions. [2019-12-27 08:40:24,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-27 08:40:24,441 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-12-27 08:40:24,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:40:24,452 INFO L225 Difference]: With dead ends: 1398 [2019-12-27 08:40:24,452 INFO L226 Difference]: Without dead ends: 1179 [2019-12-27 08:40:24,453 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 08:40:24,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2019-12-27 08:40:24,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2019-12-27 08:40:24,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2019-12-27 08:40:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 2761 transitions. [2019-12-27 08:40:24,532 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 2761 transitions. Word has length 31 [2019-12-27 08:40:24,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:40:24,533 INFO L462 AbstractCegarLoop]: Abstraction has 1179 states and 2761 transitions. [2019-12-27 08:40:24,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-27 08:40:24,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 2761 transitions. [2019-12-27 08:40:24,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 08:40:24,534 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:24,535 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:24,535 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:24,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:24,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1283773737, now seen corresponding path program 1 times [2019-12-27 08:40:24,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:24,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86217954] [2019-12-27 08:40:24,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:24,610 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 08:40:24,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86217954] [2019-12-27 08:40:24,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:40:24,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 08:40:24,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813899195] [2019-12-27 08:40:24,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:40:24,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:40:24,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:40:24,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:40:24,613 INFO L87 Difference]: Start difference. First operand 1179 states and 2761 transitions. Second operand 5 states. [2019-12-27 08:40:24,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:40:24,752 INFO L93 Difference]: Finished difference Result 893 states and 1909 transitions. [2019-12-27 08:40:24,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:40:24,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-12-27 08:40:24,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:40:24,760 INFO L225 Difference]: With dead ends: 893 [2019-12-27 08:40:24,760 INFO L226 Difference]: Without dead ends: 893 [2019-12-27 08:40:24,760 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:40:24,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2019-12-27 08:40:24,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 819. [2019-12-27 08:40:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2019-12-27 08:40:24,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1787 transitions. [2019-12-27 08:40:24,791 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1787 transitions. Word has length 31 [2019-12-27 08:40:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:40:24,791 INFO L462 AbstractCegarLoop]: Abstraction has 819 states and 1787 transitions. [2019-12-27 08:40:24,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:40:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1787 transitions. [2019-12-27 08:40:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-12-27 08:40:24,801 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:24,802 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:24,802 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:24,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:24,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2059244109, now seen corresponding path program 1 times [2019-12-27 08:40:24,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:24,803 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996448602] [2019-12-27 08:40:24,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:40:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:40:24,900 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 08:40:24,900 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 08:40:24,900 WARN L364 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 08:40:24,900 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2019-12-27 08:40:24,922 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,922 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,922 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,922 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,923 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,923 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,923 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,923 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,923 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,923 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,924 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,924 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,924 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,924 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,925 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,925 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,925 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,925 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,926 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,926 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,926 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,926 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,928 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,928 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,928 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,928 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,931 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,932 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,932 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,932 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:24,939 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 08:40:24,939 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:40:24,940 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:40:24,940 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:40:24,940 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:40:24,940 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:40:24,940 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:40:24,940 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:40:24,940 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:40:24,942 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 86 transitions [2019-12-27 08:40:25,281 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8023 states. [2019-12-27 08:40:25,281 INFO L276 IsEmpty]: Start isEmpty. Operand 8023 states. [2019-12-27 08:40:25,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 08:40:25,282 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:25,282 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:25,283 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:25,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:25,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1723678677, now seen corresponding path program 1 times [2019-12-27 08:40:25,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:25,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436267346] [2019-12-27 08:40:25,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:25,300 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 08:40:25,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436267346] [2019-12-27 08:40:25,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:40:25,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 08:40:25,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979940214] [2019-12-27 08:40:25,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-27 08:40:25,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:40:25,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-27 08:40:25,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 08:40:25,302 INFO L87 Difference]: Start difference. First operand 8023 states. Second operand 2 states. [2019-12-27 08:40:25,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:40:25,394 INFO L93 Difference]: Finished difference Result 8023 states and 24394 transitions. [2019-12-27 08:40:25,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-27 08:40:25,394 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-12-27 08:40:25,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:40:25,456 INFO L225 Difference]: With dead ends: 8023 [2019-12-27 08:40:25,456 INFO L226 Difference]: Without dead ends: 6724 [2019-12-27 08:40:25,457 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 08:40:25,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6724 states. [2019-12-27 08:40:25,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6724 to 6724. [2019-12-27 08:40:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6724 states. [2019-12-27 08:40:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6724 states to 6724 states and 20503 transitions. [2019-12-27 08:40:25,779 INFO L78 Accepts]: Start accepts. Automaton has 6724 states and 20503 transitions. Word has length 31 [2019-12-27 08:40:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:40:25,781 INFO L462 AbstractCegarLoop]: Abstraction has 6724 states and 20503 transitions. [2019-12-27 08:40:25,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-27 08:40:25,781 INFO L276 IsEmpty]: Start isEmpty. Operand 6724 states and 20503 transitions. [2019-12-27 08:40:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 08:40:25,782 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:25,782 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:25,783 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:25,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1033117203, now seen corresponding path program 1 times [2019-12-27 08:40:25,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:25,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267005486] [2019-12-27 08:40:25,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:25,855 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 08:40:25,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267005486] [2019-12-27 08:40:25,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:40:25,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 08:40:25,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855212154] [2019-12-27 08:40:25,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:40:25,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:40:25,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:40:25,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:40:25,858 INFO L87 Difference]: Start difference. First operand 6724 states and 20503 transitions. Second operand 5 states. [2019-12-27 08:40:26,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:40:26,013 INFO L93 Difference]: Finished difference Result 5558 states and 15692 transitions. [2019-12-27 08:40:26,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:40:26,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-12-27 08:40:26,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:40:26,051 INFO L225 Difference]: With dead ends: 5558 [2019-12-27 08:40:26,051 INFO L226 Difference]: Without dead ends: 5558 [2019-12-27 08:40:26,052 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:40:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2019-12-27 08:40:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 4969. [2019-12-27 08:40:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4969 states. [2019-12-27 08:40:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4969 states to 4969 states and 14298 transitions. [2019-12-27 08:40:26,321 INFO L78 Accepts]: Start accepts. Automaton has 4969 states and 14298 transitions. Word has length 31 [2019-12-27 08:40:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:40:26,321 INFO L462 AbstractCegarLoop]: Abstraction has 4969 states and 14298 transitions. [2019-12-27 08:40:26,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:40:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4969 states and 14298 transitions. [2019-12-27 08:40:26,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-27 08:40:26,327 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:26,327 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:26,327 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:26,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:26,327 INFO L82 PathProgramCache]: Analyzing trace with hash 839350739, now seen corresponding path program 1 times [2019-12-27 08:40:26,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:26,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138229881] [2019-12-27 08:40:26,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:40:26,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138229881] [2019-12-27 08:40:26,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534687183] [2019-12-27 08:40:26,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:40:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:26,674 INFO L264 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 08:40:26,678 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:40:26,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 08:40:26,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:40:26,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 18 [2019-12-27 08:40:26,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046299320] [2019-12-27 08:40:26,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-27 08:40:26,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:40:26,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-27 08:40:26,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2019-12-27 08:40:26,773 INFO L87 Difference]: Start difference. First operand 4969 states and 14298 transitions. Second operand 18 states. [2019-12-27 08:40:27,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:40:27,054 INFO L93 Difference]: Finished difference Result 5074 states and 14527 transitions. [2019-12-27 08:40:27,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 08:40:27,054 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2019-12-27 08:40:27,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:40:27,080 INFO L225 Difference]: With dead ends: 5074 [2019-12-27 08:40:27,080 INFO L226 Difference]: Without dead ends: 5074 [2019-12-27 08:40:27,081 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2019-12-27 08:40:27,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5074 states. [2019-12-27 08:40:27,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5074 to 4959. [2019-12-27 08:40:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4959 states. [2019-12-27 08:40:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4959 states to 4959 states and 14275 transitions. [2019-12-27 08:40:27,235 INFO L78 Accepts]: Start accepts. Automaton has 4959 states and 14275 transitions. Word has length 63 [2019-12-27 08:40:27,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:40:27,236 INFO L462 AbstractCegarLoop]: Abstraction has 4959 states and 14275 transitions. [2019-12-27 08:40:27,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-27 08:40:27,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4959 states and 14275 transitions. [2019-12-27 08:40:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-27 08:40:27,242 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:27,242 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:27,448 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:40:27,448 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:27,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:27,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1317138946, now seen corresponding path program 1 times [2019-12-27 08:40:27,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:27,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986317921] [2019-12-27 08:40:27,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:40:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:40:27,509 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 08:40:27,510 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 08:40:27,510 WARN L364 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 08:40:27,510 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2019-12-27 08:40:27,520 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,520 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,520 WARN L315 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,521 WARN L315 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,521 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,521 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,521 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,522 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,522 WARN L315 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,522 WARN L315 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,522 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,522 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,523 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,523 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,523 WARN L315 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,523 WARN L315 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,584 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,584 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,584 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,585 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,585 WARN L315 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,585 WARN L315 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,585 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,585 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,586 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,586 WARN L315 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,586 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,586 WARN L315 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,588 WARN L315 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,588 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,589 WARN L315 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,589 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,599 WARN L315 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,599 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,599 WARN L315 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,599 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,600 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,601 WARN L315 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,601 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,601 WARN L315 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:27,606 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 08:40:27,606 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:40:27,606 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:40:27,607 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:40:27,607 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:40:27,607 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:40:27,607 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:40:27,607 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:40:27,607 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:40:27,609 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 92 transitions [2019-12-27 08:40:31,585 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46548 states. [2019-12-27 08:40:31,585 INFO L276 IsEmpty]: Start isEmpty. Operand 46548 states. [2019-12-27 08:40:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 08:40:31,585 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:31,586 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:31,586 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:31,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:31,586 INFO L82 PathProgramCache]: Analyzing trace with hash -185685144, now seen corresponding path program 1 times [2019-12-27 08:40:31,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:31,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112607428] [2019-12-27 08:40:31,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:31,607 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 08:40:31,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112607428] [2019-12-27 08:40:31,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:40:31,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 08:40:31,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110296450] [2019-12-27 08:40:31,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-27 08:40:31,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:40:31,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-27 08:40:31,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 08:40:31,613 INFO L87 Difference]: Start difference. First operand 46548 states. Second operand 2 states. [2019-12-27 08:40:32,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:40:32,917 INFO L93 Difference]: Finished difference Result 46548 states and 173720 transitions. [2019-12-27 08:40:32,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-27 08:40:32,917 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-12-27 08:40:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:40:33,113 INFO L225 Difference]: With dead ends: 46548 [2019-12-27 08:40:33,114 INFO L226 Difference]: Without dead ends: 38769 [2019-12-27 08:40:33,114 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 08:40:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38769 states. [2019-12-27 08:40:34,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38769 to 38769. [2019-12-27 08:40:34,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38769 states. [2019-12-27 08:40:34,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38769 states to 38769 states and 145205 transitions. [2019-12-27 08:40:34,583 INFO L78 Accepts]: Start accepts. Automaton has 38769 states and 145205 transitions. Word has length 31 [2019-12-27 08:40:34,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:40:34,584 INFO L462 AbstractCegarLoop]: Abstraction has 38769 states and 145205 transitions. [2019-12-27 08:40:34,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-27 08:40:34,584 INFO L276 IsEmpty]: Start isEmpty. Operand 38769 states and 145205 transitions. [2019-12-27 08:40:34,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 08:40:34,585 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:34,585 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:34,585 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:34,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:34,586 INFO L82 PathProgramCache]: Analyzing trace with hash 533505481, now seen corresponding path program 1 times [2019-12-27 08:40:34,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:34,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21565173] [2019-12-27 08:40:34,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:34,629 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 08:40:34,630 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21565173] [2019-12-27 08:40:34,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:40:34,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 08:40:34,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209143656] [2019-12-27 08:40:34,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:40:34,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:40:34,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:40:34,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:40:34,632 INFO L87 Difference]: Start difference. First operand 38769 states and 145205 transitions. Second operand 5 states. [2019-12-27 08:40:34,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:40:34,888 INFO L93 Difference]: Finished difference Result 34383 states and 120748 transitions. [2019-12-27 08:40:34,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:40:34,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-12-27 08:40:34,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:40:36,569 INFO L225 Difference]: With dead ends: 34383 [2019-12-27 08:40:36,569 INFO L226 Difference]: Without dead ends: 34383 [2019-12-27 08:40:36,570 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:40:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34383 states. [2019-12-27 08:40:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34383 to 30219. [2019-12-27 08:40:37,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30219 states. [2019-12-27 08:40:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30219 states to 30219 states and 107829 transitions. [2019-12-27 08:40:37,391 INFO L78 Accepts]: Start accepts. Automaton has 30219 states and 107829 transitions. Word has length 31 [2019-12-27 08:40:37,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:40:37,391 INFO L462 AbstractCegarLoop]: Abstraction has 30219 states and 107829 transitions. [2019-12-27 08:40:37,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:40:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 30219 states and 107829 transitions. [2019-12-27 08:40:37,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-27 08:40:37,396 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:37,396 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:37,396 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:37,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:37,397 INFO L82 PathProgramCache]: Analyzing trace with hash 753504176, now seen corresponding path program 1 times [2019-12-27 08:40:37,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:37,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345539437] [2019-12-27 08:40:37,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:40:37,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345539437] [2019-12-27 08:40:37,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846414446] [2019-12-27 08:40:37,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:40:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:37,957 INFO L264 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 08:40:37,966 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:40:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 08:40:38,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:40:38,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 18 [2019-12-27 08:40:38,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896375113] [2019-12-27 08:40:38,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-27 08:40:38,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:40:38,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-27 08:40:38,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2019-12-27 08:40:38,048 INFO L87 Difference]: Start difference. First operand 30219 states and 107829 transitions. Second operand 18 states. [2019-12-27 08:40:38,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:40:38,384 INFO L93 Difference]: Finished difference Result 30999 states and 110063 transitions. [2019-12-27 08:40:38,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 08:40:38,384 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2019-12-27 08:40:38,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:40:38,476 INFO L225 Difference]: With dead ends: 30999 [2019-12-27 08:40:38,476 INFO L226 Difference]: Without dead ends: 30999 [2019-12-27 08:40:38,477 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2019-12-27 08:40:38,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30999 states. [2019-12-27 08:40:39,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30999 to 30209. [2019-12-27 08:40:39,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30209 states. [2019-12-27 08:40:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30209 states to 30209 states and 107806 transitions. [2019-12-27 08:40:39,551 INFO L78 Accepts]: Start accepts. Automaton has 30209 states and 107806 transitions. Word has length 63 [2019-12-27 08:40:39,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:40:39,551 INFO L462 AbstractCegarLoop]: Abstraction has 30209 states and 107806 transitions. [2019-12-27 08:40:39,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-27 08:40:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 30209 states and 107806 transitions. [2019-12-27 08:40:39,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-12-27 08:40:39,574 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:39,574 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:39,777 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:40:39,779 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:39,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1267639844, now seen corresponding path program 1 times [2019-12-27 08:40:39,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:39,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411691356] [2019-12-27 08:40:39,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:40:40,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411691356] [2019-12-27 08:40:40,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223940629] [2019-12-27 08:40:40,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:40:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:40:40,149 INFO L264 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-27 08:40:40,155 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:40:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 08:40:40,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:40:40,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2019-12-27 08:40:40,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104906048] [2019-12-27 08:40:40,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-27 08:40:40,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:40:40,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-27 08:40:40,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2019-12-27 08:40:40,282 INFO L87 Difference]: Start difference. First operand 30209 states and 107806 transitions. Second operand 22 states. [2019-12-27 08:40:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:40:40,693 INFO L93 Difference]: Finished difference Result 30834 states and 109656 transitions. [2019-12-27 08:40:40,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-27 08:40:40,694 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2019-12-27 08:40:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:40:40,766 INFO L225 Difference]: With dead ends: 30834 [2019-12-27 08:40:40,766 INFO L226 Difference]: Without dead ends: 30834 [2019-12-27 08:40:40,766 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2019-12-27 08:40:40,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30834 states. [2019-12-27 08:40:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30834 to 30159. [2019-12-27 08:40:42,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30159 states. [2019-12-27 08:40:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30159 states to 30159 states and 107651 transitions. [2019-12-27 08:40:42,746 INFO L78 Accepts]: Start accepts. Automaton has 30159 states and 107651 transitions. Word has length 75 [2019-12-27 08:40:42,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:40:42,746 INFO L462 AbstractCegarLoop]: Abstraction has 30159 states and 107651 transitions. [2019-12-27 08:40:42,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-27 08:40:42,747 INFO L276 IsEmpty]: Start isEmpty. Operand 30159 states and 107651 transitions. [2019-12-27 08:40:42,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-12-27 08:40:42,765 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:40:42,766 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:40:42,969 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:40:42,969 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:40:42,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:40:42,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1016606872, now seen corresponding path program 1 times [2019-12-27 08:40:42,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:40:42,971 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181989578] [2019-12-27 08:40:42,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:40:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:40:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 08:40:43,034 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 08:40:43,034 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 08:40:43,035 WARN L364 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 08:40:43,035 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2019-12-27 08:40:43,042 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,042 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,042 WARN L315 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,042 WARN L315 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,042 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,043 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,043 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,043 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,043 WARN L315 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,043 WARN L315 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,044 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,044 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,044 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,044 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,044 WARN L315 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,044 WARN L315 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,044 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,045 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,045 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,045 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,045 WARN L315 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,045 WARN L315 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,045 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,046 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,046 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,046 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,046 WARN L315 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,046 WARN L315 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,046 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,046 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,047 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,047 WARN L315 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,047 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,047 WARN L315 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,049 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,049 WARN L315 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,049 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,049 WARN L315 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,051 WARN L315 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,051 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,051 WARN L315 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,051 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,053 WARN L315 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,053 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,053 WARN L315 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,053 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,055 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,055 WARN L315 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,055 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,056 WARN L315 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:40:43,061 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 08:40:43,062 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:40:43,062 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:40:43,062 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:40:43,062 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:40:43,062 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:40:43,062 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:40:43,062 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:40:43,063 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:40:43,064 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 98 transitions [2019-12-27 08:42:20,127 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 271573 states. [2019-12-27 08:42:20,127 INFO L276 IsEmpty]: Start isEmpty. Operand 271573 states. [2019-12-27 08:42:20,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 08:42:20,128 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:42:20,128 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:42:20,128 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:42:20,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:42:20,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1598063606, now seen corresponding path program 1 times [2019-12-27 08:42:20,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:42:20,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559260451] [2019-12-27 08:42:20,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:42:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:20,144 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 08:42:20,145 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559260451] [2019-12-27 08:42:20,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:42:20,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 08:42:20,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958433380] [2019-12-27 08:42:20,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-27 08:42:20,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:42:20,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-27 08:42:20,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 08:42:20,146 INFO L87 Difference]: Start difference. First operand 271573 states. Second operand 2 states. [2019-12-27 08:42:22,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:42:22,447 INFO L93 Difference]: Finished difference Result 271573 states and 1199406 transitions. [2019-12-27 08:42:22,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-27 08:42:22,447 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-12-27 08:42:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:42:23,228 INFO L225 Difference]: With dead ends: 271573 [2019-12-27 08:42:23,228 INFO L226 Difference]: Without dead ends: 224914 [2019-12-27 08:42:23,229 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 08:42:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224914 states. [2019-12-27 08:42:40,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224914 to 224914. [2019-12-27 08:42:40,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224914 states. [2019-12-27 08:42:50,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224914 states to 224914 states and 997227 transitions. [2019-12-27 08:42:50,448 INFO L78 Accepts]: Start accepts. Automaton has 224914 states and 997227 transitions. Word has length 31 [2019-12-27 08:42:50,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:42:50,448 INFO L462 AbstractCegarLoop]: Abstraction has 224914 states and 997227 transitions. [2019-12-27 08:42:50,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-27 08:42:50,449 INFO L276 IsEmpty]: Start isEmpty. Operand 224914 states and 997227 transitions. [2019-12-27 08:42:50,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 08:42:50,449 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:42:50,449 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:42:50,449 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:42:50,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:42:50,449 INFO L82 PathProgramCache]: Analyzing trace with hash -878872981, now seen corresponding path program 1 times [2019-12-27 08:42:50,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:42:50,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455500076] [2019-12-27 08:42:50,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:42:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:50,488 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 08:42:50,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455500076] [2019-12-27 08:42:50,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:42:50,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 08:42:50,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987978014] [2019-12-27 08:42:50,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:42:50,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:42:50,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:42:50,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:42:50,490 INFO L87 Difference]: Start difference. First operand 224914 states and 997227 transitions. Second operand 5 states. [2019-12-27 08:43:01,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:43:01,293 INFO L93 Difference]: Finished difference Result 211408 states and 888109 transitions. [2019-12-27 08:43:01,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:43:01,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-12-27 08:43:01,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:43:01,970 INFO L225 Difference]: With dead ends: 211408 [2019-12-27 08:43:01,970 INFO L226 Difference]: Without dead ends: 211408 [2019-12-27 08:43:01,970 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:43:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211408 states. [2019-12-27 08:43:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211408 to 183469. [2019-12-27 08:43:08,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183469 states. [2019-12-27 08:43:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183469 states to 183469 states and 780920 transitions. [2019-12-27 08:43:10,947 INFO L78 Accepts]: Start accepts. Automaton has 183469 states and 780920 transitions. Word has length 31 [2019-12-27 08:43:10,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:43:10,947 INFO L462 AbstractCegarLoop]: Abstraction has 183469 states and 780920 transitions. [2019-12-27 08:43:10,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:43:10,947 INFO L276 IsEmpty]: Start isEmpty. Operand 183469 states and 780920 transitions. [2019-12-27 08:43:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-27 08:43:10,950 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:43:10,950 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:43:10,951 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:43:10,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:43:10,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1165960307, now seen corresponding path program 1 times [2019-12-27 08:43:10,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:43:10,951 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514061031] [2019-12-27 08:43:10,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:43:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:43:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:43:11,161 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514061031] [2019-12-27 08:43:11,161 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523899907] [2019-12-27 08:43:11,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:43:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:43:11,243 INFO L264 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 08:43:11,252 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:43:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 08:43:11,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:43:11,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 18 [2019-12-27 08:43:11,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493042150] [2019-12-27 08:43:11,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-27 08:43:11,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:43:11,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-27 08:43:11,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2019-12-27 08:43:11,330 INFO L87 Difference]: Start difference. First operand 183469 states and 780920 transitions. Second operand 18 states. [2019-12-27 08:43:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:43:20,115 INFO L93 Difference]: Finished difference Result 188124 states and 797704 transitions. [2019-12-27 08:43:20,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 08:43:20,116 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2019-12-27 08:43:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:43:20,708 INFO L225 Difference]: With dead ends: 188124 [2019-12-27 08:43:20,708 INFO L226 Difference]: Without dead ends: 188124 [2019-12-27 08:43:20,709 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2019-12-27 08:43:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188124 states. [2019-12-27 08:43:26,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188124 to 183459. [2019-12-27 08:43:26,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183459 states. [2019-12-27 08:43:36,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183459 states to 183459 states and 780897 transitions. [2019-12-27 08:43:36,113 INFO L78 Accepts]: Start accepts. Automaton has 183459 states and 780897 transitions. Word has length 63 [2019-12-27 08:43:36,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:43:36,113 INFO L462 AbstractCegarLoop]: Abstraction has 183459 states and 780897 transitions. [2019-12-27 08:43:36,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-27 08:43:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand 183459 states and 780897 transitions. [2019-12-27 08:43:36,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-12-27 08:43:36,126 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:43:36,126 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:43:36,329 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:43:36,329 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:43:36,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:43:36,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1879773651, now seen corresponding path program 1 times [2019-12-27 08:43:36,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:43:36,331 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887594348] [2019-12-27 08:43:36,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:43:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:43:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:43:36,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887594348] [2019-12-27 08:43:36,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841232677] [2019-12-27 08:43:36,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:43:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:43:36,620 INFO L264 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-27 08:43:36,621 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:43:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 08:43:36,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:43:36,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2019-12-27 08:43:36,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406472566] [2019-12-27 08:43:36,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-27 08:43:36,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:43:36,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-27 08:43:36,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2019-12-27 08:43:36,741 INFO L87 Difference]: Start difference. First operand 183459 states and 780897 transitions. Second operand 22 states. [2019-12-27 08:43:37,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:43:37,903 INFO L93 Difference]: Finished difference Result 187959 states and 797297 transitions. [2019-12-27 08:43:37,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-27 08:43:37,904 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2019-12-27 08:43:37,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:43:40,095 INFO L225 Difference]: With dead ends: 187959 [2019-12-27 08:43:40,095 INFO L226 Difference]: Without dead ends: 187959 [2019-12-27 08:43:40,096 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2019-12-27 08:43:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187959 states. [2019-12-27 08:43:52,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187959 to 183409. [2019-12-27 08:43:52,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183409 states. [2019-12-27 08:43:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183409 states to 183409 states and 780742 transitions. [2019-12-27 08:43:52,879 INFO L78 Accepts]: Start accepts. Automaton has 183409 states and 780742 transitions. Word has length 75 [2019-12-27 08:43:52,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:43:52,879 INFO L462 AbstractCegarLoop]: Abstraction has 183409 states and 780742 transitions. [2019-12-27 08:43:52,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-27 08:43:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 183409 states and 780742 transitions. [2019-12-27 08:43:52,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-12-27 08:43:52,936 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:43:52,937 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:43:53,137 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:43:53,137 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:43:53,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:43:53,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1049606878, now seen corresponding path program 1 times [2019-12-27 08:43:53,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:43:53,139 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660177378] [2019-12-27 08:43:53,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:43:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2019-12-27 08:43:53,214 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,215 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,215 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,215 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,216 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,216 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,216 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,216 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,217 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,217 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,217 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,218 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,218 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,219 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2019-12-27 08:43:53,221 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-27 08:43:53,227 WARN L227 ceAbstractionStarter]: Timeout [2019-12-27 08:43:53,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 08:43:53 BasicIcfg [2019-12-27 08:43:53,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 08:43:53,231 INFO L168 Benchmark]: Toolchain (without parser) took 211511.77 ms. Allocated memory was 137.9 MB in the beginning and 4.7 GB in the end (delta: 4.5 GB). Free memory was 100.1 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2019-12-27 08:43:53,236 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 137.9 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-12-27 08:43:53,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 909.35 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 120.7 MB in the end (delta: -21.0 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. [2019-12-27 08:43:53,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.13 ms. Allocated memory is still 201.9 MB. Free memory was 120.7 MB in the beginning and 117.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-12-27 08:43:53,243 INFO L168 Benchmark]: Boogie Preprocessor took 38.70 ms. Allocated memory is still 201.9 MB. Free memory was 117.8 MB in the beginning and 116.8 MB in the end (delta: 969.1 kB). Peak memory consumption was 969.1 kB. Max. memory is 7.1 GB. [2019-12-27 08:43:53,243 INFO L168 Benchmark]: RCFGBuilder took 505.11 ms. Allocated memory is still 201.9 MB. Free memory was 116.8 MB in the beginning and 92.2 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2019-12-27 08:43:53,246 INFO L168 Benchmark]: TraceAbstraction took 209977.01 ms. Allocated memory was 201.9 MB in the beginning and 4.7 GB in the end (delta: 4.5 GB). Free memory was 92.2 MB in the beginning and 1.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2019-12-27 08:43:53,254 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 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 909.35 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 120.7 MB in the end (delta: -21.0 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 65.13 ms. Allocated memory is still 201.9 MB. Free memory was 120.7 MB in the beginning and 117.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.70 ms. Allocated memory is still 201.9 MB. Free memory was 117.8 MB in the beginning and 116.8 MB in the end (delta: 969.1 kB). Peak memory consumption was 969.1 kB. Max. memory is 7.1 GB. * RCFGBuilder took 505.11 ms. Allocated memory is still 201.9 MB. Free memory was 116.8 MB in the beginning and 92.2 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209977.01 ms. Allocated memory was 201.9 MB in the beginning and 4.7 GB in the end (delta: 4.5 GB). Free memory was 92.2 MB in the beginning and 1.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1089]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1089). Cancelled while BasicCegarLoop was analyzing trace of length 88 with TraceHistMax 3,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 86 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 68 locations, 1 error locations. Result: TIMEOUT, OverallTime: 190.1s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 27.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 413 SDtfs, 647 SDslu, 1663 SDs, 0 SdLazy, 451 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=271573occurred 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: 64.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 37154 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 338 NumberOfCodeBlocks, 338 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 332 ConstructedInterpolants, 0 QuantifiedInterpolants, 83988 SizeOfPredicates, 10 NumberOfNonLiveVariables, 310 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 4/38 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 could not prove your program: Timeout Completed graceful shutdown