/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 19:08:57,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 19:08:57,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 19:08:57,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 19:08:57,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 19:08:57,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 19:08:57,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 19:08:57,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 19:08:57,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 19:08:57,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 19:08:57,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 19:08:57,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 19:08:57,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 19:08:57,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 19:08:57,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 19:08:57,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 19:08:57,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 19:08:57,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 19:08:57,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 19:08:57,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 19:08:57,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 19:08:57,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 19:08:57,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 19:08:57,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 19:08:57,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 19:08:57,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 19:08:57,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 19:08:57,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 19:08:57,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 19:08:57,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 19:08:57,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 19:08:57,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 19:08:57,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 19:08:57,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 19:08:57,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 19:08:57,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 19:08:57,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-MCR.epf [2019-12-27 19:08:57,243 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 19:08:57,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 19:08:57,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 19:08:57,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 19:08:57,246 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 19:08:57,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 19:08:57,246 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 19:08:57,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 19:08:57,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 19:08:57,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 19:08:57,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 19:08:57,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 19:08:57,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 19:08:57,251 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 19:08:57,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 19:08:57,252 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 19:08:57,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 19:08:57,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 19:08:57,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 19:08:57,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 19:08:57,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 19:08:57,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 19:08:57,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 19:08:57,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 19:08:57,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 19:08:57,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 19:08:57,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 19:08:57,254 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 19:08:57,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 19:08:57,254 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 19:08:57,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 19:08:57,524 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 19:08:57,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 19:08:57,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 19:08:57,546 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 19:08:57,546 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 19:08:57,547 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2019-12-27 19:08:57,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b086a1bd/fbdfa63e7ea549a4b2fc43fa7ab9e37c/FLAGf20d6aec7 [2019-12-27 19:08:58,130 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 19:08:58,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2019-12-27 19:08:58,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b086a1bd/fbdfa63e7ea549a4b2fc43fa7ab9e37c/FLAGf20d6aec7 [2019-12-27 19:08:58,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b086a1bd/fbdfa63e7ea549a4b2fc43fa7ab9e37c [2019-12-27 19:08:58,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 19:08:58,448 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 19:08:58,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 19:08:58,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 19:08:58,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 19:08:58,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 07:08:58" (1/1) ... [2019-12-27 19:08:58,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1ed74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:08:58, skipping insertion in model container [2019-12-27 19:08:58,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 07:08:58" (1/1) ... [2019-12-27 19:08:58,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 19:08:58,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 19:08:58,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 19:08:58,967 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 19:08:59,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 19:08:59,122 INFO L208 MainTranslator]: Completed translation [2019-12-27 19:08:59,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:08:59 WrapperNode [2019-12-27 19:08:59,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 19:08:59,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 19:08:59,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 19:08:59,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 19:08:59,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:08:59" (1/1) ... [2019-12-27 19:08:59,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:08:59" (1/1) ... [2019-12-27 19:08:59,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 19:08:59,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 19:08:59,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 19:08:59,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 19:08:59,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:08:59" (1/1) ... [2019-12-27 19:08:59,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:08:59" (1/1) ... [2019-12-27 19:08:59,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:08:59" (1/1) ... [2019-12-27 19:08:59,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:08:59" (1/1) ... [2019-12-27 19:08:59,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:08:59" (1/1) ... [2019-12-27 19:08:59,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:08:59" (1/1) ... [2019-12-27 19:08:59,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:08:59" (1/1) ... [2019-12-27 19:08:59,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 19:08:59,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 19:08:59,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 19:08:59,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 19:08:59,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:08:59" (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 19:08:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-12-27 19:08:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 19:08:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 19:08:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2019-12-27 19:08:59,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2019-12-27 19:08:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 19:08:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 19:08:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 19:08:59,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 19:08:59,278 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 19:08:59,641 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 19:08:59,642 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-27 19:08:59,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 07:08:59 BoogieIcfgContainer [2019-12-27 19:08:59,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 19:08:59,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 19:08:59,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 19:08:59,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 19:08:59,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 07:08:58" (1/3) ... [2019-12-27 19:08:59,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38731c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 07:08:59, skipping insertion in model container [2019-12-27 19:08:59,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:08:59" (2/3) ... [2019-12-27 19:08:59,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38731c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 07:08:59, skipping insertion in model container [2019-12-27 19:08:59,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 07:08:59" (3/3) ... [2019-12-27 19:08:59,651 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2019-12-27 19:08:59,659 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 19:08:59,659 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 19:08:59,666 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 19:08:59,667 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 19:08:59,690 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:08:59,690 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:08:59,690 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:08:59,691 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:08:59,691 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:08:59,691 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:08:59,691 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:08:59,695 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:08:59,695 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:08:59,695 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:08:59,695 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:08:59,696 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:08:59,715 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 19:08:59,733 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 19:08:59,733 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 19:08:59,733 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 19:08:59,733 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 19:08:59,733 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 19:08:59,734 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 19:08:59,734 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 19:08:59,734 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 19:08:59,748 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 66 transitions [2019-12-27 19:08:59,750 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions [2019-12-27 19:08:59,804 INFO L132 PetriNetUnfolder]: 11/98 cut-off events. [2019-12-27 19:08:59,804 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 19:08:59,810 INFO L76 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 98 events. 11/98 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs. 0/82 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2019-12-27 19:08:59,814 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions [2019-12-27 19:08:59,859 INFO L132 PetriNetUnfolder]: 11/98 cut-off events. [2019-12-27 19:08:59,859 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 19:08:59,860 INFO L76 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 98 events. 11/98 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs. 0/82 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2019-12-27 19:08:59,867 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 370 [2019-12-27 19:08:59,868 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 19:09:01,375 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-27 19:09:01,482 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-12-27 19:09:01,523 INFO L206 etLargeBlockEncoding]: Checked pairs total: 289 [2019-12-27 19:09:01,523 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-27 19:09:01,527 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 14 transitions [2019-12-27 19:09:01,538 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2019-12-27 19:09:01,541 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-12-27 19:09:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 19:09:01,553 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:01,555 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 19:09:01,556 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:01,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:01,566 INFO L82 PathProgramCache]: Analyzing trace with hash 7975439, now seen corresponding path program 1 times [2019-12-27 19:09:01,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:01,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240663493] [2019-12-27 19:09:01,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:01,800 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 19:09:01,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240663493] [2019-12-27 19:09:01,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:09:01,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 19:09:01,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1221967458] [2019-12-27 19:09:01,806 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:01,816 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:01,830 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 5 states and 4 transitions. [2019-12-27 19:09:01,831 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:01,835 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:09:01,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:09:01,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:01,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:09:01,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:09:01,849 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2019-12-27 19:09:01,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:01,896 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2019-12-27 19:09:01,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:09:01,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-27 19:09:01,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:01,912 INFO L225 Difference]: With dead ends: 27 [2019-12-27 19:09:01,913 INFO L226 Difference]: Without dead ends: 23 [2019-12-27 19:09:01,914 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:09:01,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-27 19:09:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-27 19:09:01,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-27 19:09:01,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2019-12-27 19:09:01,952 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2019-12-27 19:09:01,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:09:01,953 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2019-12-27 19:09:01,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:09:01,953 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2019-12-27 19:09:01,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-27 19:09:01,954 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:01,955 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-12-27 19:09:01,955 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:01,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:01,956 INFO L82 PathProgramCache]: Analyzing trace with hash -940684826, now seen corresponding path program 1 times [2019-12-27 19:09:01,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:01,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766285434] [2019-12-27 19:09:01,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 19:09:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 19:09:02,069 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 19:09:02,069 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 19:09:02,071 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 19:09:02,071 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-27 19:09:02,077 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,077 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,078 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,078 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,078 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,078 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,078 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,079 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,079 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,079 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,079 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,079 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,080 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,080 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,080 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,081 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,081 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,081 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,081 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,083 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,083 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,083 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,083 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,084 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:02,088 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 19:09:02,088 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 19:09:02,088 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 19:09:02,088 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 19:09:02,089 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 19:09:02,089 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 19:09:02,089 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 19:09:02,089 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 19:09:02,089 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 19:09:02,091 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 73 transitions [2019-12-27 19:09:02,091 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions [2019-12-27 19:09:02,125 INFO L132 PetriNetUnfolder]: 22/178 cut-off events. [2019-12-27 19:09:02,125 INFO L133 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2019-12-27 19:09:02,128 INFO L76 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 178 events. 22/178 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 451 event pairs. 0/148 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2019-12-27 19:09:02,132 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions [2019-12-27 19:09:02,167 INFO L132 PetriNetUnfolder]: 22/178 cut-off events. [2019-12-27 19:09:02,168 INFO L133 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2019-12-27 19:09:02,171 INFO L76 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 178 events. 22/178 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 451 event pairs. 0/148 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2019-12-27 19:09:02,177 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 900 [2019-12-27 19:09:02,177 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 19:09:03,356 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-27 19:09:03,450 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1597 [2019-12-27 19:09:03,450 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2019-12-27 19:09:03,451 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 23 transitions [2019-12-27 19:09:03,461 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2019-12-27 19:09:03,462 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2019-12-27 19:09:03,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 19:09:03,462 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:03,462 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 19:09:03,463 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:03,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:03,463 INFO L82 PathProgramCache]: Analyzing trace with hash 12287151, now seen corresponding path program 1 times [2019-12-27 19:09:03,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:03,464 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697231589] [2019-12-27 19:09:03,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:03,503 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 19:09:03,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697231589] [2019-12-27 19:09:03,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:09:03,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 19:09:03,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1051726423] [2019-12-27 19:09:03,504 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:03,504 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:03,505 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 5 states and 4 transitions. [2019-12-27 19:09:03,506 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:03,506 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:09:03,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:09:03,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:03,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:09:03,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:09:03,507 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2019-12-27 19:09:03,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:03,538 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2019-12-27 19:09:03,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:09:03,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-27 19:09:03,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:03,547 INFO L225 Difference]: With dead ends: 242 [2019-12-27 19:09:03,548 INFO L226 Difference]: Without dead ends: 216 [2019-12-27 19:09:03,548 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:09:03,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2019-12-27 19:09:03,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2019-12-27 19:09:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2019-12-27 19:09:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2019-12-27 19:09:03,598 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2019-12-27 19:09:03,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:09:03,599 INFO L462 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2019-12-27 19:09:03,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:09:03,599 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2019-12-27 19:09:03,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 19:09:03,600 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:03,600 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:09:03,600 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:03,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:03,600 INFO L82 PathProgramCache]: Analyzing trace with hash 2023180747, now seen corresponding path program 1 times [2019-12-27 19:09:03,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:03,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757755833] [2019-12-27 19:09:03,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 19:09:03,683 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757755833] [2019-12-27 19:09:03,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:09:03,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 19:09:03,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [173394459] [2019-12-27 19:09:03,684 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:03,685 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:03,687 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 19:09:03,687 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:03,687 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:09:03,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 19:09:03,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:03,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 19:09:03,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:09:03,688 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 4 states. [2019-12-27 19:09:03,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:03,718 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2019-12-27 19:09:03,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 19:09:03,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-27 19:09:03,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:03,721 INFO L225 Difference]: With dead ends: 203 [2019-12-27 19:09:03,721 INFO L226 Difference]: Without dead ends: 203 [2019-12-27 19:09:03,722 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:09:03,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2019-12-27 19:09:03,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2019-12-27 19:09:03,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2019-12-27 19:09:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2019-12-27 19:09:03,737 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2019-12-27 19:09:03,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:09:03,738 INFO L462 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2019-12-27 19:09:03,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 19:09:03,738 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2019-12-27 19:09:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 19:09:03,739 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:03,739 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2019-12-27 19:09:03,740 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:03,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:03,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1086197660, now seen corresponding path program 1 times [2019-12-27 19:09:03,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:03,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309143606] [2019-12-27 19:09:03,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 19:09:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 19:09:03,780 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 19:09:03,781 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 19:09:03,781 WARN L364 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 19:09:03,781 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2019-12-27 19:09:03,787 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,787 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,788 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,791 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,791 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,791 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,791 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,792 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,792 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,792 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,792 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,792 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,792 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,793 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,793 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,793 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,793 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,793 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,793 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,794 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,794 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,794 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,795 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,795 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,795 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,795 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,797 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,797 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,797 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,797 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,797 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,798 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,799 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,799 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,799 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,799 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:03,805 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 19:09:03,805 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 19:09:03,805 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 19:09:03,805 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 19:09:03,805 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 19:09:03,805 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 19:09:03,806 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 19:09:03,806 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 19:09:03,806 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 19:09:03,807 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 80 transitions [2019-12-27 19:09:03,808 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions [2019-12-27 19:09:03,866 INFO L132 PetriNetUnfolder]: 44/325 cut-off events. [2019-12-27 19:09:03,867 INFO L133 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2019-12-27 19:09:03,870 INFO L76 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 325 events. 44/325 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1074 event pairs. 0/269 useless extension candidates. Maximal degree in co-relation 186. Up to 16 conditions per place. [2019-12-27 19:09:03,875 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions [2019-12-27 19:09:03,908 INFO L132 PetriNetUnfolder]: 44/325 cut-off events. [2019-12-27 19:09:03,909 INFO L133 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2019-12-27 19:09:03,911 INFO L76 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 325 events. 44/325 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1074 event pairs. 0/269 useless extension candidates. Maximal degree in co-relation 186. Up to 16 conditions per place. [2019-12-27 19:09:03,917 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1470 [2019-12-27 19:09:03,918 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 19:09:05,189 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-27 19:09:05,273 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2828 [2019-12-27 19:09:05,273 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-27 19:09:05,273 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 28 transitions [2019-12-27 19:09:05,320 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2019-12-27 19:09:05,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2019-12-27 19:09:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 19:09:05,321 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:05,321 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 19:09:05,321 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:05,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:05,322 INFO L82 PathProgramCache]: Analyzing trace with hash 16813297, now seen corresponding path program 1 times [2019-12-27 19:09:05,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:05,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141511637] [2019-12-27 19:09:05,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:05,357 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 19:09:05,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141511637] [2019-12-27 19:09:05,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:09:05,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 19:09:05,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1609994356] [2019-12-27 19:09:05,358 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:05,359 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:05,360 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 5 states and 4 transitions. [2019-12-27 19:09:05,361 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:05,361 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:09:05,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:09:05,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:05,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:09:05,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:09:05,362 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2019-12-27 19:09:05,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:05,403 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2019-12-27 19:09:05,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:09:05,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-27 19:09:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:05,419 INFO L225 Difference]: With dead ends: 1150 [2019-12-27 19:09:05,419 INFO L226 Difference]: Without dead ends: 1024 [2019-12-27 19:09:05,420 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:09:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2019-12-27 19:09:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2019-12-27 19:09:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2019-12-27 19:09:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2019-12-27 19:09:05,533 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2019-12-27 19:09:05,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:09:05,534 INFO L462 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2019-12-27 19:09:05,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:09:05,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2019-12-27 19:09:05,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 19:09:05,535 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:05,535 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:09:05,535 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:05,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:05,535 INFO L82 PathProgramCache]: Analyzing trace with hash -427060089, now seen corresponding path program 1 times [2019-12-27 19:09:05,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:05,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640886166] [2019-12-27 19:09:05,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 19:09:05,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640886166] [2019-12-27 19:09:05,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:09:05,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 19:09:05,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [307375643] [2019-12-27 19:09:05,570 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:05,571 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:05,572 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 19:09:05,572 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:05,573 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:09:05,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 19:09:05,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:05,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 19:09:05,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:09:05,574 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 4 states. [2019-12-27 19:09:05,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:05,623 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2019-12-27 19:09:05,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 19:09:05,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-27 19:09:05,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:05,634 INFO L225 Difference]: With dead ends: 1015 [2019-12-27 19:09:05,635 INFO L226 Difference]: Without dead ends: 1015 [2019-12-27 19:09:05,635 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:09:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2019-12-27 19:09:05,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2019-12-27 19:09:05,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2019-12-27 19:09:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2019-12-27 19:09:05,666 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2019-12-27 19:09:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:09:05,667 INFO L462 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2019-12-27 19:09:05,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 19:09:05,667 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2019-12-27 19:09:05,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-27 19:09:05,675 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:05,676 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2019-12-27 19:09:05,676 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:05,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:05,677 INFO L82 PathProgramCache]: Analyzing trace with hash 880459202, now seen corresponding path program 1 times [2019-12-27 19:09:05,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:05,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244694999] [2019-12-27 19:09:05,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 19:09:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 19:09:05,738 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 19:09:05,738 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 19:09:05,738 WARN L364 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 19:09:05,738 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2019-12-27 19:09:05,751 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,751 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,751 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,752 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,752 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,752 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,752 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,752 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,752 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,753 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,753 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,753 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,753 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,753 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,753 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,754 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,754 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,754 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,754 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,754 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,754 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,755 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,755 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,755 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,755 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,755 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,755 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,755 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,757 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,757 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,757 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,757 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,758 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,760 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,760 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,760 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,761 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,761 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,762 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,762 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,762 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,762 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,762 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,764 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,764 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,764 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,764 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,764 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:05,768 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 19:09:05,768 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 19:09:05,768 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 19:09:05,768 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 19:09:05,769 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 19:09:05,769 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 19:09:05,769 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 19:09:05,769 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 19:09:05,769 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 19:09:05,770 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 87 transitions [2019-12-27 19:09:05,770 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions [2019-12-27 19:09:05,842 INFO L132 PetriNetUnfolder]: 90/608 cut-off events. [2019-12-27 19:09:05,842 INFO L133 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2019-12-27 19:09:05,848 INFO L76 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 608 events. 90/608 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2681 event pairs. 0/502 useless extension candidates. Maximal degree in co-relation 345. Up to 32 conditions per place. [2019-12-27 19:09:05,864 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions [2019-12-27 19:09:05,932 INFO L132 PetriNetUnfolder]: 90/608 cut-off events. [2019-12-27 19:09:05,933 INFO L133 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2019-12-27 19:09:05,937 INFO L76 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 608 events. 90/608 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2681 event pairs. 0/502 useless extension candidates. Maximal degree in co-relation 345. Up to 32 conditions per place. [2019-12-27 19:09:05,951 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2120 [2019-12-27 19:09:05,951 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 19:09:07,112 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-27 19:09:07,254 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3986 [2019-12-27 19:09:07,255 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2019-12-27 19:09:07,255 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 33 transitions [2019-12-27 19:09:07,614 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2019-12-27 19:09:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2019-12-27 19:09:07,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 19:09:07,615 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:07,615 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 19:09:07,616 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:07,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:07,616 INFO L82 PathProgramCache]: Analyzing trace with hash 21615603, now seen corresponding path program 1 times [2019-12-27 19:09:07,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:07,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470620228] [2019-12-27 19:09:07,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:07,633 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 19:09:07,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470620228] [2019-12-27 19:09:07,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:09:07,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 19:09:07,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1751848870] [2019-12-27 19:09:07,634 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:07,635 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:07,635 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 5 states and 4 transitions. [2019-12-27 19:09:07,636 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:07,636 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:09:07,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:09:07,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:07,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:09:07,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:09:07,637 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2019-12-27 19:09:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:07,711 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2019-12-27 19:09:07,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:09:07,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-27 19:09:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:07,755 INFO L225 Difference]: With dead ends: 5482 [2019-12-27 19:09:07,756 INFO L226 Difference]: Without dead ends: 4856 [2019-12-27 19:09:07,756 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:09:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-12-27 19:09:07,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-12-27 19:09:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-12-27 19:09:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2019-12-27 19:09:07,942 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2019-12-27 19:09:07,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:09:07,942 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2019-12-27 19:09:07,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:09:07,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2019-12-27 19:09:07,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 19:09:07,943 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:07,943 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:09:07,943 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:07,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:07,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1297801215, now seen corresponding path program 1 times [2019-12-27 19:09:07,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:07,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209176997] [2019-12-27 19:09:07,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:09:07,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209176997] [2019-12-27 19:09:07,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349100683] [2019-12-27 19:09:07,970 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 19:09:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:08,037 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 19:09:08,039 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 19:09:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:09:08,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 19:09:08,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-27 19:09:08,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1764496101] [2019-12-27 19:09:08,084 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:08,085 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:08,086 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 19:09:08,086 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:08,086 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:09:08,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 19:09:08,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:08,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 19:09:08,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 19:09:08,087 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 4 states. [2019-12-27 19:09:08,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:08,156 INFO L93 Difference]: Finished difference Result 4856 states and 17424 transitions. [2019-12-27 19:09:08,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 19:09:08,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-27 19:09:08,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:08,200 INFO L225 Difference]: With dead ends: 4856 [2019-12-27 19:09:08,201 INFO L226 Difference]: Without dead ends: 4856 [2019-12-27 19:09:08,201 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 19:09:08,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-12-27 19:09:08,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-12-27 19:09:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-12-27 19:09:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17424 transitions. [2019-12-27 19:09:08,475 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17424 transitions. Word has length 8 [2019-12-27 19:09:08,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:09:08,475 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 17424 transitions. [2019-12-27 19:09:08,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 19:09:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17424 transitions. [2019-12-27 19:09:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 19:09:08,476 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:08,476 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-27 19:09:08,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 19:09:08,681 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:08,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:08,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1878298030, now seen corresponding path program 1 times [2019-12-27 19:09:08,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:08,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226314940] [2019-12-27 19:09:08,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:09:08,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226314940] [2019-12-27 19:09:08,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913335248] [2019-12-27 19:09:08,746 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 19:09:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:08,800 INFO L264 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 19:09:08,801 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 19:09:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:09:08,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 19:09:08,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-27 19:09:08,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1578173574] [2019-12-27 19:09:08,835 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:08,836 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:08,837 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 12 transitions. [2019-12-27 19:09:08,837 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:08,838 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:09:08,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 19:09:08,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:08,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 19:09:08,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-12-27 19:09:08,839 INFO L87 Difference]: Start difference. First operand 4856 states and 17424 transitions. Second operand 5 states. [2019-12-27 19:09:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:08,915 INFO L93 Difference]: Finished difference Result 4856 states and 17408 transitions. [2019-12-27 19:09:08,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 19:09:08,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-12-27 19:09:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:08,964 INFO L225 Difference]: With dead ends: 4856 [2019-12-27 19:09:08,964 INFO L226 Difference]: Without dead ends: 4856 [2019-12-27 19:09:08,965 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-12-27 19:09:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-12-27 19:09:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-12-27 19:09:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-12-27 19:09:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17408 transitions. [2019-12-27 19:09:09,124 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17408 transitions. Word has length 12 [2019-12-27 19:09:09,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:09:09,124 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 17408 transitions. [2019-12-27 19:09:09,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 19:09:09,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17408 transitions. [2019-12-27 19:09:09,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-27 19:09:09,125 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:09,129 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:09:09,333 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 19:09:09,333 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:09,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:09,334 INFO L82 PathProgramCache]: Analyzing trace with hash -117426822, now seen corresponding path program 1 times [2019-12-27 19:09:09,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:09,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379771727] [2019-12-27 19:09:09,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:09:09,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379771727] [2019-12-27 19:09:09,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642863243] [2019-12-27 19:09:09,383 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 19:09:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:09,443 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 19:09:09,446 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 19:09:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:09:09,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 19:09:09,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-27 19:09:09,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [579104931] [2019-12-27 19:09:09,495 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:09,497 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:09,499 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 17 states and 16 transitions. [2019-12-27 19:09:09,499 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:09,499 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:09:09,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 19:09:09,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:09,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 19:09:09,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-12-27 19:09:09,500 INFO L87 Difference]: Start difference. First operand 4856 states and 17408 transitions. Second operand 6 states. [2019-12-27 19:09:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:09,571 INFO L93 Difference]: Finished difference Result 4856 states and 17344 transitions. [2019-12-27 19:09:09,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 19:09:09,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-27 19:09:09,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:09,589 INFO L225 Difference]: With dead ends: 4856 [2019-12-27 19:09:09,589 INFO L226 Difference]: Without dead ends: 4856 [2019-12-27 19:09:09,590 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-12-27 19:09:09,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-12-27 19:09:09,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-12-27 19:09:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-12-27 19:09:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17344 transitions. [2019-12-27 19:09:09,834 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17344 transitions. Word has length 16 [2019-12-27 19:09:09,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:09:09,835 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 17344 transitions. [2019-12-27 19:09:09,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 19:09:09,835 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17344 transitions. [2019-12-27 19:09:09,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 19:09:09,837 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:09,837 INFO L411 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2019-12-27 19:09:10,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 19:09:10,043 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:10,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:10,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1144536387, now seen corresponding path program 1 times [2019-12-27 19:09:10,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:10,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826291386] [2019-12-27 19:09:10,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 19:09:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 19:09:10,089 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 19:09:10,091 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 19:09:10,092 WARN L364 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 19:09:10,092 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2019-12-27 19:09:10,104 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,104 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,104 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,104 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,104 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,104 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,105 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,105 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,105 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,105 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,105 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,105 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,105 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,106 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,106 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,106 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,106 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,106 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,106 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,107 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,107 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,108 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,108 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,108 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,108 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,108 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,108 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,108 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,108 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,109 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,109 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,109 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,109 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,109 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,109 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,110 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,110 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,110 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,110 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,110 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,112 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,112 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,112 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,112 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,112 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,114 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,114 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,114 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,114 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,114 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,116 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,116 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,116 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,116 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,116 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,118 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,118 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,118 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,118 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,118 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:10,123 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 19:09:10,124 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 19:09:10,124 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 19:09:10,124 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 19:09:10,124 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 19:09:10,124 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 19:09:10,124 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 19:09:10,124 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 19:09:10,124 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 19:09:10,126 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 94 transitions [2019-12-27 19:09:10,126 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions [2019-12-27 19:09:10,293 INFO L132 PetriNetUnfolder]: 188/1167 cut-off events. [2019-12-27 19:09:10,293 INFO L133 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2019-12-27 19:09:10,305 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 1167 events. 188/1167 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6730 event pairs. 0/963 useless extension candidates. Maximal degree in co-relation 653. Up to 80 conditions per place. [2019-12-27 19:09:10,337 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions [2019-12-27 19:09:10,545 INFO L132 PetriNetUnfolder]: 188/1167 cut-off events. [2019-12-27 19:09:10,546 INFO L133 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2019-12-27 19:09:10,559 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 1167 events. 188/1167 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6730 event pairs. 0/963 useless extension candidates. Maximal degree in co-relation 653. Up to 80 conditions per place. [2019-12-27 19:09:10,593 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2850 [2019-12-27 19:09:10,593 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 19:09:11,088 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2019-12-27 19:09:12,249 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-27 19:09:12,365 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6149 [2019-12-27 19:09:12,366 INFO L214 etLargeBlockEncoding]: Total number of compositions: 60 [2019-12-27 19:09:12,366 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 38 transitions [2019-12-27 19:09:14,758 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2019-12-27 19:09:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2019-12-27 19:09:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 19:09:14,758 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:14,758 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 19:09:14,758 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:14,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:14,759 INFO L82 PathProgramCache]: Analyzing trace with hash 26696947, now seen corresponding path program 1 times [2019-12-27 19:09:14,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:14,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493839399] [2019-12-27 19:09:14,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:14,779 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 19:09:14,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493839399] [2019-12-27 19:09:14,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:09:14,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 19:09:14,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1534985814] [2019-12-27 19:09:14,780 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:14,780 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:14,781 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 5 states and 4 transitions. [2019-12-27 19:09:14,781 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:14,781 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:09:14,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:09:14,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:14,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:09:14,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:09:14,782 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2019-12-27 19:09:15,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:15,070 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2019-12-27 19:09:15,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:09:15,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-27 19:09:15,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:15,226 INFO L225 Difference]: With dead ends: 26310 [2019-12-27 19:09:15,226 INFO L226 Difference]: Without dead ends: 23184 [2019-12-27 19:09:15,230 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:09:15,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2019-12-27 19:09:16,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2019-12-27 19:09:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2019-12-27 19:09:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2019-12-27 19:09:16,312 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2019-12-27 19:09:16,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:09:16,312 INFO L462 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2019-12-27 19:09:16,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:09:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2019-12-27 19:09:16,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 19:09:16,312 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:16,312 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:09:16,313 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:16,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1482219427, now seen corresponding path program 1 times [2019-12-27 19:09:16,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:16,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98557504] [2019-12-27 19:09:16,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 19:09:16,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98557504] [2019-12-27 19:09:16,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:09:16,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 19:09:16,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [538027045] [2019-12-27 19:09:16,339 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:16,339 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:16,340 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 19:09:16,340 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:16,340 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:09:16,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 19:09:16,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:16,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 19:09:16,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:09:16,341 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 4 states. [2019-12-27 19:09:16,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:16,516 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2019-12-27 19:09:16,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 19:09:16,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-27 19:09:16,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:16,627 INFO L225 Difference]: With dead ends: 24543 [2019-12-27 19:09:16,628 INFO L226 Difference]: Without dead ends: 24543 [2019-12-27 19:09:16,628 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:09:18,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2019-12-27 19:09:18,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2019-12-27 19:09:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2019-12-27 19:09:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2019-12-27 19:09:18,845 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2019-12-27 19:09:18,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:09:18,846 INFO L462 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2019-12-27 19:09:18,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 19:09:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2019-12-27 19:09:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-27 19:09:18,847 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:18,847 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:09:18,847 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:18,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:18,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1647353871, now seen corresponding path program 1 times [2019-12-27 19:09:18,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:18,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955932684] [2019-12-27 19:09:18,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:18,888 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 19:09:18,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955932684] [2019-12-27 19:09:18,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740162837] [2019-12-27 19:09:18,889 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 19:09:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:18,942 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 19:09:18,942 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 19:09:18,988 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 19:09:18,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 19:09:18,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-27 19:09:18,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1566151431] [2019-12-27 19:09:18,989 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:18,991 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:18,999 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 27 states and 36 transitions. [2019-12-27 19:09:18,999 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:19,006 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 5 times. [2019-12-27 19:09:19,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 19:09:19,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:19,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 19:09:19,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-27 19:09:19,008 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 4 states. [2019-12-27 19:09:19,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:19,489 INFO L93 Difference]: Finished difference Result 23573 states and 96327 transitions. [2019-12-27 19:09:19,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 19:09:19,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-12-27 19:09:19,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:19,591 INFO L225 Difference]: With dead ends: 23573 [2019-12-27 19:09:19,591 INFO L226 Difference]: Without dead ends: 23573 [2019-12-27 19:09:19,592 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-27 19:09:19,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23573 states. [2019-12-27 19:09:20,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23573 to 23573. [2019-12-27 19:09:20,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23573 states. [2019-12-27 19:09:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2019-12-27 19:09:20,240 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 16 [2019-12-27 19:09:20,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:09:20,241 INFO L462 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2019-12-27 19:09:20,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 19:09:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2019-12-27 19:09:20,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-27 19:09:20,243 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:20,243 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:09:20,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 19:09:20,444 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:20,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:20,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1700547162, now seen corresponding path program 1 times [2019-12-27 19:09:20,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:20,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338813550] [2019-12-27 19:09:20,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 19:09:20,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338813550] [2019-12-27 19:09:20,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298614401] [2019-12-27 19:09:20,487 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 19:09:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:20,549 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 19:09:20,551 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 19:09:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 19:09:20,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 19:09:20,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-27 19:09:20,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [182572936] [2019-12-27 19:09:20,587 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:20,590 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:20,594 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 33 states and 44 transitions. [2019-12-27 19:09:20,594 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:20,600 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 4 times. [2019-12-27 19:09:20,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 19:09:20,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:20,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 19:09:20,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-27 19:09:20,601 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand 5 states. [2019-12-27 19:09:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:21,071 INFO L93 Difference]: Finished difference Result 23557 states and 96271 transitions. [2019-12-27 19:09:21,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 19:09:21,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-12-27 19:09:21,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:21,154 INFO L225 Difference]: With dead ends: 23557 [2019-12-27 19:09:21,154 INFO L226 Difference]: Without dead ends: 23557 [2019-12-27 19:09:21,155 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-27 19:09:21,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2019-12-27 19:09:21,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23557. [2019-12-27 19:09:21,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23557 states. [2019-12-27 19:09:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 96271 transitions. [2019-12-27 19:09:21,884 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 96271 transitions. Word has length 20 [2019-12-27 19:09:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:09:21,884 INFO L462 AbstractCegarLoop]: Abstraction has 23557 states and 96271 transitions. [2019-12-27 19:09:21,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 19:09:21,884 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 96271 transitions. [2019-12-27 19:09:21,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 19:09:21,893 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:21,893 INFO L411 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:09:22,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 19:09:22,098 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:22,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:22,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1187474448, now seen corresponding path program 1 times [2019-12-27 19:09:22,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:22,100 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689400300] [2019-12-27 19:09:22,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 19:09:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 19:09:22,127 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 19:09:22,127 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 19:09:22,128 WARN L364 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 19:09:22,128 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2019-12-27 19:09:22,136 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,136 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,137 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,137 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,137 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,137 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,137 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,137 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,137 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,138 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,138 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,138 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,138 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,138 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,138 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,138 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,139 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,139 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,139 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,139 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,139 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,139 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,139 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,140 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,140 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,140 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,140 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,140 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,140 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,140 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,141 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,141 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,141 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,141 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,141 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,141 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,141 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,141 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,142 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,142 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,142 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,142 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,142 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,142 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,143 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,143 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,143 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,144 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,144 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,144 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,145 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,145 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,146 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,146 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,146 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,146 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,146 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,147 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,148 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,148 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,148 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,148 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,149 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,149 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,150 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,150 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,150 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,152 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,152 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,152 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,152 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,153 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:09:22,161 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 19:09:22,161 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 19:09:22,161 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 19:09:22,161 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 19:09:22,161 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 19:09:22,161 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 19:09:22,161 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 19:09:22,162 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 19:09:22,162 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 19:09:22,163 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 101 transitions [2019-12-27 19:09:22,163 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 103 places, 101 transitions [2019-12-27 19:09:23,103 INFO L132 PetriNetUnfolder]: 398/2286 cut-off events. [2019-12-27 19:09:23,104 INFO L133 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2019-12-27 19:09:23,128 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 2286 events. 398/2286 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 16149 event pairs. 0/1888 useless extension candidates. Maximal degree in co-relation 1266. Up to 192 conditions per place. [2019-12-27 19:09:23,178 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 103 places, 101 transitions [2019-12-27 19:09:23,519 INFO L132 PetriNetUnfolder]: 398/2286 cut-off events. [2019-12-27 19:09:23,519 INFO L133 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2019-12-27 19:09:23,544 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 2286 events. 398/2286 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 16149 event pairs. 0/1888 useless extension candidates. Maximal degree in co-relation 1266. Up to 192 conditions per place. [2019-12-27 19:09:23,596 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3660 [2019-12-27 19:09:23,596 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 19:09:25,016 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-12-27 19:09:25,116 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7553 [2019-12-27 19:09:25,116 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2019-12-27 19:09:25,116 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 43 transitions [2019-12-27 19:09:53,459 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2019-12-27 19:09:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2019-12-27 19:09:53,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 19:09:53,460 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:09:53,460 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 19:09:53,460 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:09:53,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:09:53,461 INFO L82 PathProgramCache]: Analyzing trace with hash 32083310, now seen corresponding path program 1 times [2019-12-27 19:09:53,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:09:53,461 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849752408] [2019-12-27 19:09:53,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:09:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:09:53,477 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 19:09:53,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849752408] [2019-12-27 19:09:53,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:09:53,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 19:09:53,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [278888550] [2019-12-27 19:09:53,478 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:09:53,478 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:09:53,479 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 5 states and 4 transitions. [2019-12-27 19:09:53,479 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:09:53,479 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:09:53,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:09:53,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:09:53,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:09:53,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:09:53,480 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2019-12-27 19:09:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:09:56,752 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2019-12-27 19:09:56,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:09:56,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-27 19:09:56,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:09:57,218 INFO L225 Difference]: With dead ends: 127122 [2019-12-27 19:09:57,218 INFO L226 Difference]: Without dead ends: 111496 [2019-12-27 19:09:57,218 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:10:00,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2019-12-27 19:10:02,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2019-12-27 19:10:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2019-12-27 19:10:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2019-12-27 19:10:02,472 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2019-12-27 19:10:02,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:10:02,473 INFO L462 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2019-12-27 19:10:02,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:10:02,473 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2019-12-27 19:10:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 19:10:02,473 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:10:02,473 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:10:02,473 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:10:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:10:02,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1213874105, now seen corresponding path program 1 times [2019-12-27 19:10:02,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:10:02,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847412651] [2019-12-27 19:10:02,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:10:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:10:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 19:10:02,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847412651] [2019-12-27 19:10:02,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:10:02,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 19:10:02,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1464913139] [2019-12-27 19:10:02,504 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:10:02,505 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:10:02,506 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 19:10:02,507 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:10:02,507 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:10:02,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 19:10:02,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:10:02,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 19:10:02,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:10:02,508 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 4 states. [2019-12-27 19:10:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:10:08,366 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2019-12-27 19:10:08,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 19:10:08,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-27 19:10:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:10:08,759 INFO L225 Difference]: With dead ends: 120747 [2019-12-27 19:10:08,760 INFO L226 Difference]: Without dead ends: 120747 [2019-12-27 19:10:08,760 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:10:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2019-12-27 19:10:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2019-12-27 19:10:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2019-12-27 19:10:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2019-12-27 19:10:17,460 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2019-12-27 19:10:17,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:10:17,460 INFO L462 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2019-12-27 19:10:17,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 19:10:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2019-12-27 19:10:17,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-27 19:10:17,461 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:10:17,461 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:10:17,461 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:10:17,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:10:17,461 INFO L82 PathProgramCache]: Analyzing trace with hash 579549320, now seen corresponding path program 1 times [2019-12-27 19:10:17,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:10:17,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733179964] [2019-12-27 19:10:17,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:10:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:10:17,498 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 19:10:17,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733179964] [2019-12-27 19:10:17,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787006699] [2019-12-27 19:10:17,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 19:10:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:10:17,563 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 19:10:17,564 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 19:10:17,586 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 19:10:17,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 19:10:17,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-27 19:10:17,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [171620164] [2019-12-27 19:10:17,587 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:10:17,588 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:10:17,593 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 27 states and 36 transitions. [2019-12-27 19:10:17,594 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:10:17,599 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2019-12-27 19:10:17,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 19:10:17,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:10:17,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 19:10:17,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-27 19:10:17,600 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 4 states. [2019-12-27 19:10:19,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:10:19,147 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2019-12-27 19:10:19,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 19:10:19,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-12-27 19:10:19,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:10:19,528 INFO L225 Difference]: With dead ends: 116193 [2019-12-27 19:10:19,528 INFO L226 Difference]: Without dead ends: 116193 [2019-12-27 19:10:19,528 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-27 19:10:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2019-12-27 19:10:29,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2019-12-27 19:10:29,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2019-12-27 19:10:30,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2019-12-27 19:10:30,047 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2019-12-27 19:10:30,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:10:30,048 INFO L462 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2019-12-27 19:10:30,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 19:10:30,048 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2019-12-27 19:10:30,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-27 19:10:30,049 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:10:30,049 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:10:30,250 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 19:10:30,251 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:10:30,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:10:30,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1298529040, now seen corresponding path program 1 times [2019-12-27 19:10:30,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:10:30,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569499736] [2019-12-27 19:10:30,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:10:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:10:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 19:10:30,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569499736] [2019-12-27 19:10:30,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177177635] [2019-12-27 19:10:30,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 19:10:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:10:30,414 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 19:10:30,415 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 19:10:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 19:10:30,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 19:10:30,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-27 19:10:30,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1061817183] [2019-12-27 19:10:30,447 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:10:30,450 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:10:30,454 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 33 states and 44 transitions. [2019-12-27 19:10:30,454 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:10:30,455 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 5 times. [2019-12-27 19:10:30,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 19:10:30,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:10:30,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 19:10:30,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-27 19:10:30,457 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 5 states. [2019-12-27 19:10:31,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:10:31,073 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2019-12-27 19:10:31,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 19:10:31,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-12-27 19:10:31,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:10:31,426 INFO L225 Difference]: With dead ends: 116177 [2019-12-27 19:10:31,427 INFO L226 Difference]: Without dead ends: 116177 [2019-12-27 19:10:31,427 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-27 19:10:34,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2019-12-27 19:10:42,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2019-12-27 19:10:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2019-12-27 19:10:42,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2019-12-27 19:10:42,967 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2019-12-27 19:10:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:10:42,968 INFO L462 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2019-12-27 19:10:42,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 19:10:42,968 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2019-12-27 19:10:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-27 19:10:42,973 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:10:42,973 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:10:43,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 19:10:43,176 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:10:43,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:10:43,177 INFO L82 PathProgramCache]: Analyzing trace with hash -982455207, now seen corresponding path program 1 times [2019-12-27 19:10:43,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:10:43,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067255045] [2019-12-27 19:10:43,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:10:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:10:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 19:10:43,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067255045] [2019-12-27 19:10:43,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014789871] [2019-12-27 19:10:43,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 19:10:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:10:43,335 INFO L264 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 19:10:43,337 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 19:10:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 19:10:43,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 19:10:43,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-27 19:10:43,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1483833598] [2019-12-27 19:10:43,384 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:10:43,387 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:10:43,393 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 41 states and 56 transitions. [2019-12-27 19:10:43,393 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:10:43,397 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2019-12-27 19:10:43,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 19:10:43,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:10:43,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 19:10:43,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-12-27 19:10:43,399 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 6 states. [2019-12-27 19:10:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:10:44,132 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2019-12-27 19:10:44,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 19:10:44,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-12-27 19:10:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:10:45,670 INFO L225 Difference]: With dead ends: 116113 [2019-12-27 19:10:45,670 INFO L226 Difference]: Without dead ends: 116113 [2019-12-27 19:10:45,670 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-12-27 19:10:47,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2019-12-27 19:10:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2019-12-27 19:10:55,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2019-12-27 19:10:55,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2019-12-27 19:10:55,764 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2019-12-27 19:10:55,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:10:55,764 INFO L462 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2019-12-27 19:10:55,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 19:10:55,764 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2019-12-27 19:10:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-27 19:10:55,778 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:10:55,778 INFO L411 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:10:55,978 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 19:10:55,979 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:10:55,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:10:55,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1095808649, now seen corresponding path program 1 times [2019-12-27 19:10:55,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:10:55,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498767983] [2019-12-27 19:10:55,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:10:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 19:10:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 19:10:56,015 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 19:10:56,016 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 19:10:56,017 WARN L364 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 19:10:56,017 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2019-12-27 19:10:56,029 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,029 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,030 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,030 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,030 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,030 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,030 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,030 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,030 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,031 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,031 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,031 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,031 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,031 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,031 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,031 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,032 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,032 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,032 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,032 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,032 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,032 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,032 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,032 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,033 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,033 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,033 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,033 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,033 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,033 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,033 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,034 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,034 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,034 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,034 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,036 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,036 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,036 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,036 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,036 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,036 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,037 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,037 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,037 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,037 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,037 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,037 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,037 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,038 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,038 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,038 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,038 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,038 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,038 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,040 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,040 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,040 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,040 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,040 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,041 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,042 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,042 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,042 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,042 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,043 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,043 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,044 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,044 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,044 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,045 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,045 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,046 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,046 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,046 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,047 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,047 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,047 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,047 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,048 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,049 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,049 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,049 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,049 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,049 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:10:56,054 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 19:10:56,054 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 19:10:56,054 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 19:10:56,054 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 19:10:56,054 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 19:10:56,054 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 19:10:56,054 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 19:10:56,055 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 19:10:56,055 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 19:10:56,056 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 108 transitions [2019-12-27 19:10:56,057 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions [2019-12-27 19:10:57,743 INFO L132 PetriNetUnfolder]: 848/4541 cut-off events. [2019-12-27 19:10:57,743 INFO L133 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2019-12-27 19:10:57,783 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 4541 events. 848/4541 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38159 event pairs. 0/3757 useless extension candidates. Maximal degree in co-relation 2504. Up to 448 conditions per place. [2019-12-27 19:10:57,853 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions [2019-12-27 19:10:58,442 INFO L132 PetriNetUnfolder]: 848/4541 cut-off events. [2019-12-27 19:10:58,443 INFO L133 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2019-12-27 19:10:58,481 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 4541 events. 848/4541 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38159 event pairs. 0/3757 useless extension candidates. Maximal degree in co-relation 2504. Up to 448 conditions per place. [2019-12-27 19:10:58,566 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4550 [2019-12-27 19:10:58,566 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 19:11:00,158 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-12-27 19:11:00,234 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11010 [2019-12-27 19:11:00,234 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2019-12-27 19:11:00,235 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 48 transitions Received shutdown request... [2019-12-27 19:12:46,355 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-27 19:12:46,359 WARN L227 ceAbstractionStarter]: Timeout [2019-12-27 19:12:46,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 07:12:46 BasicIcfg [2019-12-27 19:12:46,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 19:12:46,361 INFO L168 Benchmark]: Toolchain (without parser) took 227913.57 ms. Allocated memory was 139.5 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 103.3 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2019-12-27 19:12:46,361 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-12-27 19:12:46,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.88 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.9 MB in the beginning and 163.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-12-27 19:12:46,364 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.64 ms. Allocated memory is still 203.9 MB. Free memory was 163.0 MB in the beginning and 161.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 19:12:46,368 INFO L168 Benchmark]: Boogie Preprocessor took 28.92 ms. Allocated memory is still 203.9 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 19:12:46,368 INFO L168 Benchmark]: RCFGBuilder took 424.11 ms. Allocated memory is still 203.9 MB. Free memory was 159.0 MB in the beginning and 138.0 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-12-27 19:12:46,369 INFO L168 Benchmark]: TraceAbstraction took 226714.80 ms. Allocated memory was 203.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 137.3 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2019-12-27 19:12:46,381 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.88 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.9 MB in the beginning and 163.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.64 ms. Allocated memory is still 203.9 MB. Free memory was 163.0 MB in the beginning and 161.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.92 ms. Allocated memory is still 203.9 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 424.11 ms. Allocated memory is still 203.9 MB. Free memory was 159.0 MB in the beginning and 138.0 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226714.80 ms. Allocated memory was 203.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 137.3 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 63 ProgramPointsBefore, 14 ProgramPointsAfterwards, 66 TransitionsBefore, 14 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 183 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 289 CheckedPairsTotal, 56 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 71 ProgramPointsBefore, 24 ProgramPointsAfterwards, 73 TransitionsBefore, 23 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 4 ChoiceCompositions, 457 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 15 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1597 CheckedPairsTotal, 55 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 79 ProgramPointsBefore, 30 ProgramPointsAfterwards, 80 TransitionsBefore, 28 TransitionsAfterwards, 1470 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 760 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 2828 CheckedPairsTotal, 56 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 87 ProgramPointsBefore, 36 ProgramPointsAfterwards, 87 TransitionsBefore, 33 TransitionsAfterwards, 2120 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 1032 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 3986 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 95 ProgramPointsBefore, 42 ProgramPointsAfterwards, 94 TransitionsBefore, 38 TransitionsAfterwards, 2850 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 1370 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 6149 CheckedPairsTotal, 60 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.9s, 103 ProgramPointsBefore, 48 ProgramPointsAfterwards, 101 TransitionsBefore, 43 TransitionsAfterwards, 3660 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 1751 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 30 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 7553 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 4.1s, 111 ProgramPointsBefore, 54 ProgramPointsAfterwards, 108 TransitionsBefore, 48 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 2261 VarBasedMoverChecksPositive, 62 VarBasedMoverChecksNegative, 42 SemBasedMoverChecksPositive, 60 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 11010 CheckedPairsTotal, 65 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 675]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 675). Cancelled while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 54 places, 48 transitions. Already constructed 247539 states. Currently 34702 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 60 locations, 1 error locations. Result: TIMEOUT, OverallTime: 110.3s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown