/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:09:01,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:09:01,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:09:01,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:09:01,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:09:01,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:09:01,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:09:01,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:09:01,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:09:01,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:09:01,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:09:01,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:09:01,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:09:01,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:09:01,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:09:01,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:09:01,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:09:01,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:09:01,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:09:01,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:09:01,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:09:01,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:09:01,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:09:01,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:09:01,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-12 00:09:01,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:09:01,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:09:01,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:09:01,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:09:01,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:09:01,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:09:01,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:09:01,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:09:01,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:09:01,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:09:01,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:09:01,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-12 00:09:01,525 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:09:01,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:09:01,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:09:01,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:09:01,527 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:09:01,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:09:01,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:09:01,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:09:01,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:09:01,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:09:01,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:09:01,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:09:01,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:09:01,529 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:09:01,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:09:01,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:09:01,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:09:01,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:09:01,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:09:01,530 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:09:01,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:09:01,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:09:01,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:09:01,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:09:01,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:09:01,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:09:01,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:09:01,532 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:09:01,532 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:09:01,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:09:01,533 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:09:01,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:09:01,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:09:01,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:09:01,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:09:01,985 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:09:01,986 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-09-12 00:09:02,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1b9755fb/f38117d004d0482b8c19ea20165ee08c/FLAGb586edf45 [2020-09-12 00:09:02,658 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:09:02,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-09-12 00:09:02,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1b9755fb/f38117d004d0482b8c19ea20165ee08c/FLAGb586edf45 [2020-09-12 00:09:02,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1b9755fb/f38117d004d0482b8c19ea20165ee08c [2020-09-12 00:09:02,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:09:02,918 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:09:02,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:09:02,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:09:02,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:09:02,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:09:02" (1/1) ... [2020-09-12 00:09:02,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c504f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:02, skipping insertion in model container [2020-09-12 00:09:02,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:09:02" (1/1) ... [2020-09-12 00:09:02,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:09:02,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:09:03,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:09:03,478 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:09:03,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:09:03,636 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:09:03,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:03 WrapperNode [2020-09-12 00:09:03,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:09:03,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:09:03,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:09:03,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:09:03,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:03" (1/1) ... [2020-09-12 00:09:03,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:03" (1/1) ... [2020-09-12 00:09:03,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:09:03,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:09:03,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:09:03,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:09:03,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:03" (1/1) ... [2020-09-12 00:09:03,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:03" (1/1) ... [2020-09-12 00:09:03,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:03" (1/1) ... [2020-09-12 00:09:03,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:03" (1/1) ... [2020-09-12 00:09:03,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:03" (1/1) ... [2020-09-12 00:09:03,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:03" (1/1) ... [2020-09-12 00:09:03,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:03" (1/1) ... [2020-09-12 00:09:03,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:09:03,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:09:03,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:09:03,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:09:03,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-12 00:09:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:09:03,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-12 00:09:03,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:09:03,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:09:03,800 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-12 00:09:03,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-12 00:09:03,800 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-12 00:09:03,801 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-12 00:09:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-12 00:09:03,801 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-12 00:09:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-12 00:09:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:09:03,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:09:03,805 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-12 00:09:04,165 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:09:04,165 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-12 00:09:04,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:09:04 BoogieIcfgContainer [2020-09-12 00:09:04,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:09:04,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:09:04,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:09:04,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:09:04,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:09:02" (1/3) ... [2020-09-12 00:09:04,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162ea1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:09:04, skipping insertion in model container [2020-09-12 00:09:04,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:03" (2/3) ... [2020-09-12 00:09:04,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162ea1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:09:04, skipping insertion in model container [2020-09-12 00:09:04,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:09:04" (3/3) ... [2020-09-12 00:09:04,181 INFO L109 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2020-09-12 00:09:04,192 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:09:04,193 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:09:04,202 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:09:04,203 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:09:04,232 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,233 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,233 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,234 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,235 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,235 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,235 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,236 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,236 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,237 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,237 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,242 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,242 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,243 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,243 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,260 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,260 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,261 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,264 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,264 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:09:04,287 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-12 00:09:04,312 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:09:04,313 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:09:04,313 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:09:04,313 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:09:04,313 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:09:04,314 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:09:04,314 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:09:04,314 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:09:04,330 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-12 00:09:04,333 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-12 00:09:04,380 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-12 00:09:04,381 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:09:04,387 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-12 00:09:04,390 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-12 00:09:04,412 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-12 00:09:04,413 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:09:04,413 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-12 00:09:04,416 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-12 00:09:04,417 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:09:05,620 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2365 [2020-09-12 00:09:05,620 INFO L214 etLargeBlockEncoding]: Total number of compositions: 53 [2020-09-12 00:09:05,625 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-12 00:09:05,675 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-12 00:09:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-12 00:09:05,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:09:05,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:09:05,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:09:05,692 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:09:05,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:09:05,700 INFO L82 PathProgramCache]: Analyzing trace with hash -589225259, now seen corresponding path program 1 times [2020-09-12 00:09:05,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:09:05,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834247566] [2020-09-12 00:09:05,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:09:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:09:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:09:05,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834247566] [2020-09-12 00:09:05,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:09:05,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:09:05,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1690741932] [2020-09-12 00:09:05,954 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:09:05,958 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:09:05,972 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:09:05,973 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:09:05,975 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:09:05,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-12 00:09:05,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:09:05,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-12 00:09:05,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-12 00:09:05,997 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-12 00:09:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:09:06,022 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-12 00:09:06,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-12 00:09:06,024 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-12 00:09:06,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:09:06,046 INFO L225 Difference]: With dead ends: 362 [2020-09-12 00:09:06,047 INFO L226 Difference]: Without dead ends: 298 [2020-09-12 00:09:06,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-12 00:09:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-12 00:09:06,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-12 00:09:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-12 00:09:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-12 00:09:06,137 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-12 00:09:06,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:09:06,138 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-12 00:09:06,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-12 00:09:06,139 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-12 00:09:06,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:09:06,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:09:06,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:09:06,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:09:06,141 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:09:06,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:09:06,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1086118353, now seen corresponding path program 1 times [2020-09-12 00:09:06,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:09:06,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948410954] [2020-09-12 00:09:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:09:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:09:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:09:06,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948410954] [2020-09-12 00:09:06,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:09:06,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:09:06,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1674351856] [2020-09-12 00:09:06,248 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:09:06,254 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:09:06,256 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-12 00:09:06,256 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:09:06,256 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:09:06,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:09:06,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:09:06,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:09:06,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:09:06,259 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-09-12 00:09:06,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:09:06,281 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-09-12 00:09:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:09:06,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-12 00:09:06,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:09:06,284 INFO L225 Difference]: With dead ends: 217 [2020-09-12 00:09:06,285 INFO L226 Difference]: Without dead ends: 217 [2020-09-12 00:09:06,286 INFO L675 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 [2020-09-12 00:09:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-09-12 00:09:06,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-09-12 00:09:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-12 00:09:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-09-12 00:09:06,304 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-09-12 00:09:06,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:09:06,304 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-09-12 00:09:06,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:09:06,305 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-09-12 00:09:06,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-12 00:09:06,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:09:06,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:09:06,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-12 00:09:06,307 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:09:06,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:09:06,307 INFO L82 PathProgramCache]: Analyzing trace with hash -954674037, now seen corresponding path program 1 times [2020-09-12 00:09:06,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:09:06,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428606739] [2020-09-12 00:09:06,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:09:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:09:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:09:06,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428606739] [2020-09-12 00:09:06,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:09:06,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:09:06,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1127715858] [2020-09-12 00:09:06,413 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:09:06,414 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:09:06,416 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-09-12 00:09:06,416 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:09:06,493 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:09:06,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:09:06,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:09:06,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:09:06,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:09:06,494 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-09-12 00:09:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:09:06,523 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-09-12 00:09:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:09:06,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-12 00:09:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:09:06,525 INFO L225 Difference]: With dead ends: 136 [2020-09-12 00:09:06,525 INFO L226 Difference]: Without dead ends: 136 [2020-09-12 00:09:06,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:09:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-12 00:09:06,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-09-12 00:09:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-12 00:09:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-09-12 00:09:06,535 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-09-12 00:09:06,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:09:06,535 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-09-12 00:09:06,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:09:06,535 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-09-12 00:09:06,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-12 00:09:06,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:09:06,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:09:06,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-12 00:09:06,537 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:09:06,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:09:06,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1044268816, now seen corresponding path program 1 times [2020-09-12 00:09:06,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:09:06,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187164649] [2020-09-12 00:09:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:09:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:09:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:09:06,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187164649] [2020-09-12 00:09:06,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:09:06,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:09:06,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1471963308] [2020-09-12 00:09:06,627 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:09:06,630 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:09:06,632 INFO L274 McrAutomatonBuilder]: Finished intersection with 22 states and 25 transitions. [2020-09-12 00:09:06,632 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:09:06,663 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2835#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:09:06,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:09:06,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:09:06,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:09:06,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:09:06,664 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-09-12 00:09:06,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:09:06,701 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-09-12 00:09:06,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:09:06,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-12 00:09:06,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:09:06,702 INFO L225 Difference]: With dead ends: 109 [2020-09-12 00:09:06,703 INFO L226 Difference]: Without dead ends: 109 [2020-09-12 00:09:06,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:09:06,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-12 00:09:06,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-09-12 00:09:06,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-12 00:09:06,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-09-12 00:09:06,709 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-09-12 00:09:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:09:06,710 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-09-12 00:09:06,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:09:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-09-12 00:09:06,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-12 00:09:06,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:09:06,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:09:06,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-12 00:09:06,712 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:09:06,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:09:06,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1052552835, now seen corresponding path program 1 times [2020-09-12 00:09:06,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:09:06,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101813903] [2020-09-12 00:09:06,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:09:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:09:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:09:06,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101813903] [2020-09-12 00:09:06,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:09:06,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:09:06,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [278379138] [2020-09-12 00:09:06,822 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:09:06,824 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:09:06,831 INFO L274 McrAutomatonBuilder]: Finished intersection with 48 states and 75 transitions. [2020-09-12 00:09:06,831 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:09:06,868 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:09:06,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:09:06,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:09:06,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:09:06,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:09:06,870 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-09-12 00:09:06,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:09:06,917 INFO L93 Difference]: Finished difference Result 174 states and 369 transitions. [2020-09-12 00:09:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:09:06,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-12 00:09:06,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:09:06,919 INFO L225 Difference]: With dead ends: 174 [2020-09-12 00:09:06,919 INFO L226 Difference]: Without dead ends: 136 [2020-09-12 00:09:06,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:09:06,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-12 00:09:06,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2020-09-12 00:09:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-12 00:09:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 239 transitions. [2020-09-12 00:09:06,926 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 239 transitions. Word has length 18 [2020-09-12 00:09:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:09:06,926 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 239 transitions. [2020-09-12 00:09:06,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:09:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 239 transitions. [2020-09-12 00:09:06,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-12 00:09:06,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:09:06,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:09:06,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-12 00:09:06,928 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:09:06,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:09:06,928 INFO L82 PathProgramCache]: Analyzing trace with hash 645557555, now seen corresponding path program 2 times [2020-09-12 00:09:06,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:09:06,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974144748] [2020-09-12 00:09:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:09:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:09:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:09:06,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974144748] [2020-09-12 00:09:06,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:09:06,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:09:06,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2010297785] [2020-09-12 00:09:06,994 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:09:06,996 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:09:07,004 INFO L274 McrAutomatonBuilder]: Finished intersection with 54 states and 91 transitions. [2020-09-12 00:09:07,005 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:09:07,018 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:09:07,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:09:07,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:09:07,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:09:07,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:09:07,019 INFO L87 Difference]: Start difference. First operand 109 states and 239 transitions. Second operand 4 states. [2020-09-12 00:09:07,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:09:07,041 INFO L93 Difference]: Finished difference Result 135 states and 287 transitions. [2020-09-12 00:09:07,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:09:07,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-12 00:09:07,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:09:07,043 INFO L225 Difference]: With dead ends: 135 [2020-09-12 00:09:07,043 INFO L226 Difference]: Without dead ends: 55 [2020-09-12 00:09:07,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:09:07,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-12 00:09:07,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-12 00:09:07,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-12 00:09:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-09-12 00:09:07,046 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 18 [2020-09-12 00:09:07,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:09:07,047 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-09-12 00:09:07,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:09:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-09-12 00:09:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-12 00:09:07,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:09:07,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:09:07,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-12 00:09:07,048 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:09:07,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:09:07,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1837863529, now seen corresponding path program 3 times [2020-09-12 00:09:07,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:09:07,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655962260] [2020-09-12 00:09:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:09:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:09:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:09:07,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655962260] [2020-09-12 00:09:07,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:09:07,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:09:07,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [697518861] [2020-09-12 00:09:07,124 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:09:07,126 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:09:07,149 INFO L274 McrAutomatonBuilder]: Finished intersection with 55 states and 90 transitions. [2020-09-12 00:09:07,149 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:09:07,174 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:09:07,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:09:07,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:09:07,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:09:07,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:09:07,176 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 5 states. [2020-09-12 00:09:07,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:09:07,228 INFO L93 Difference]: Finished difference Result 89 states and 153 transitions. [2020-09-12 00:09:07,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-12 00:09:07,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-12 00:09:07,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:09:07,229 INFO L225 Difference]: With dead ends: 89 [2020-09-12 00:09:07,229 INFO L226 Difference]: Without dead ends: 42 [2020-09-12 00:09:07,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:09:07,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-12 00:09:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-12 00:09:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-12 00:09:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-09-12 00:09:07,232 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 18 [2020-09-12 00:09:07,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:09:07,232 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-09-12 00:09:07,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:09:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-09-12 00:09:07,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-12 00:09:07,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:09:07,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:09:07,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-12 00:09:07,234 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:09:07,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:09:07,234 INFO L82 PathProgramCache]: Analyzing trace with hash 784811111, now seen corresponding path program 4 times [2020-09-12 00:09:07,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:09:07,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560891284] [2020-09-12 00:09:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:09:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:09:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:09:07,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560891284] [2020-09-12 00:09:07,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:09:07,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:09:07,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [340791511] [2020-09-12 00:09:07,316 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:09:07,319 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:09:07,329 INFO L274 McrAutomatonBuilder]: Finished intersection with 68 states and 120 transitions. [2020-09-12 00:09:07,330 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:09:07,390 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:09:07,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:09:07,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:09:07,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:09:07,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:09:07,392 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 5 states. [2020-09-12 00:09:07,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:09:07,428 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-09-12 00:09:07,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:09:07,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-12 00:09:07,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:09:07,431 INFO L225 Difference]: With dead ends: 41 [2020-09-12 00:09:07,431 INFO L226 Difference]: Without dead ends: 0 [2020-09-12 00:09:07,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:09:07,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-12 00:09:07,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-12 00:09:07,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-12 00:09:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-12 00:09:07,432 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-12 00:09:07,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:09:07,433 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-12 00:09:07,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:09:07,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-12 00:09:07,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-12 00:09:07,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-12 00:09:07,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:09:07 BasicIcfg [2020-09-12 00:09:07,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:09:07,449 INFO L168 Benchmark]: Toolchain (without parser) took 4526.69 ms. Allocated memory was 140.5 MB in the beginning and 250.1 MB in the end (delta: 109.6 MB). Free memory was 101.0 MB in the beginning and 174.4 MB in the end (delta: -73.4 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2020-09-12 00:09:07,450 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-12 00:09:07,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.95 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 100.5 MB in the beginning and 162.3 MB in the end (delta: -61.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-09-12 00:09:07,451 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.36 ms. Allocated memory is still 205.0 MB. Free memory was 162.3 MB in the beginning and 160.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:09:07,452 INFO L168 Benchmark]: Boogie Preprocessor took 29.55 ms. Allocated memory is still 205.0 MB. Free memory was 160.3 MB in the beginning and 159.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:09:07,456 INFO L168 Benchmark]: RCFGBuilder took 446.77 ms. Allocated memory is still 205.0 MB. Free memory was 159.0 MB in the beginning and 136.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-12 00:09:07,456 INFO L168 Benchmark]: TraceAbstraction took 3267.01 ms. Allocated memory was 205.0 MB in the beginning and 250.1 MB in the end (delta: 45.1 MB). Free memory was 136.5 MB in the beginning and 174.4 MB in the end (delta: -37.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. [2020-09-12 00:09:07,465 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 717.95 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 100.5 MB in the beginning and 162.3 MB in the end (delta: -61.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.36 ms. Allocated memory is still 205.0 MB. Free memory was 162.3 MB in the beginning and 160.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.55 ms. Allocated memory is still 205.0 MB. Free memory was 160.3 MB in the beginning and 159.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.77 ms. Allocated memory is still 205.0 MB. Free memory was 159.0 MB in the beginning and 136.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3267.01 ms. Allocated memory was 205.0 MB in the beginning and 250.1 MB in the end (delta: 45.1 MB). Free memory was 136.5 MB in the beginning and 174.4 MB in the end (delta: -37.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 77 ProgramPointsBefore, 32 ProgramPointsAfterwards, 69 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 620 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2365 CheckedPairsTotal, 53 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 153 SDtfs, 87 SDslu, 254 SDs, 0 SdLazy, 90 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 305 GetRequests, 276 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 27 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 3746 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...