/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/safe034_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:49:14,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:49:14,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:49:14,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:49:14,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:49:14,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:49:14,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:49:14,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:49:14,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:49:14,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:49:14,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:49:14,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:49:14,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:49:14,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:49:14,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:49:14,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:49:14,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:49:14,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:49:14,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:49:14,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:49:14,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:49:14,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:49:14,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:49:14,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:49:14,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:49:14,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:49:14,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:49:14,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:49:14,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:49:14,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:49:14,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:49:14,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:49:14,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:49:14,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:49:14,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:49:14,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:49:14,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:49:14,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:49:14,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:49:14,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:49:14,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:49:14,665 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 [2020-10-16 13:49:14,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:49:14,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:49:14,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:49:14,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:49:14,719 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:49:14,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:49:14,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:49:14,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:49:14,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:49:14,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:49:14,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:49:14,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:49:14,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:49:14,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:49:14,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:49:14,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:49:14,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:49:14,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:49:14,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:49:14,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:49:14,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:49:14,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:49:14,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:49:14,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:49:14,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:49:14,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:49:14,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:49:14,724 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:49:14,724 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:49:14,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:49:14,725 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:49:15,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:49:15,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:49:15,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:49:15,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:49:15,025 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:49:15,026 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-10-16 13:49:15,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1d0723b8/4b46c5c956ef4a089dbc6d4f1e0ec7c6/FLAG8776ce057 [2020-10-16 13:49:15,657 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:49:15,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-10-16 13:49:15,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1d0723b8/4b46c5c956ef4a089dbc6d4f1e0ec7c6/FLAG8776ce057 [2020-10-16 13:49:15,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1d0723b8/4b46c5c956ef4a089dbc6d4f1e0ec7c6 [2020-10-16 13:49:15,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:49:15,927 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:49:15,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:49:15,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:49:15,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:49:15,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:49:15" (1/1) ... [2020-10-16 13:49:15,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f82f2f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:49:15, skipping insertion in model container [2020-10-16 13:49:15,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:49:15" (1/1) ... [2020-10-16 13:49:15,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:49:15,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:49:16,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:49:16,473 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:49:16,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:49:16,591 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:49:16,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:49:16 WrapperNode [2020-10-16 13:49:16,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:49:16,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:49:16,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:49:16,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:49:16,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:49:16" (1/1) ... [2020-10-16 13:49:16,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:49:16" (1/1) ... [2020-10-16 13:49:16,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:49:16,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:49:16,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:49:16,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:49:16,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:49:16" (1/1) ... [2020-10-16 13:49:16,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:49:16" (1/1) ... [2020-10-16 13:49:16,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:49:16" (1/1) ... [2020-10-16 13:49:16,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:49:16" (1/1) ... [2020-10-16 13:49:16,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:49:16" (1/1) ... [2020-10-16 13:49:16,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:49:16" (1/1) ... [2020-10-16 13:49:16,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:49:16" (1/1) ... [2020-10-16 13:49:16,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:49:16,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:49:16,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:49:16,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:49:16,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:49:16" (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 [2020-10-16 13:49:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:49:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:49:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:49:16,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:49:16,737 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:49:16,737 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:49:16,737 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:49:16,737 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:49:16,737 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:49:16,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:49:16,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:49:16,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:49:16,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:49:16,740 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:49:17,101 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:49:17,101 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:49:17,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:49:17 BoogieIcfgContainer [2020-10-16 13:49:17,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:49:17,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:49:17,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:49:17,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:49:17,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:49:15" (1/3) ... [2020-10-16 13:49:17,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dfd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:49:17, skipping insertion in model container [2020-10-16 13:49:17,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:49:16" (2/3) ... [2020-10-16 13:49:17,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dfd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:49:17, skipping insertion in model container [2020-10-16 13:49:17,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:49:17" (3/3) ... [2020-10-16 13:49:17,112 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2020-10-16 13:49:17,125 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:49:17,126 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:49:17,132 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:49:17,133 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:49:17,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,160 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,161 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,161 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,162 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,163 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,163 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,163 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,163 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,164 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,164 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,164 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,165 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,165 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,165 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,169 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,170 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,170 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,170 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,176 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,176 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,176 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,177 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,180 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,180 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,180 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,180 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:49:17,183 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:49:17,197 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:49:17,214 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:49:17,215 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:49:17,215 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:49:17,215 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:49:17,215 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:49:17,215 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:49:17,216 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:49:17,216 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:49:17,228 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:49:17,229 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:49:17,231 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:49:17,233 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 13:49:17,278 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 13:49:17,279 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:49:17,284 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 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. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:49:17,286 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:49:18,583 INFO L132 LiptonReduction]: Checked pairs total: 2842 [2020-10-16 13:49:18,583 INFO L134 LiptonReduction]: Total number of compositions: 61 [2020-10-16 13:49:18,590 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 13:49:18,616 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 13:49:18,618 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 13:49:18,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:49:18,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:49:18,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:49:18,627 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:49:18,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:49:18,633 INFO L82 PathProgramCache]: Analyzing trace with hash 760003701, now seen corresponding path program 1 times [2020-10-16 13:49:18,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:49:18,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779544519] [2020-10-16 13:49:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:49:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:49:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:49:18,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779544519] [2020-10-16 13:49:18,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:49:18,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:49:18,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2032846764] [2020-10-16 13:49:18,844 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:49:18,847 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:49:18,862 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:49:18,862 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:49:18,866 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:49:18,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:49:18,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:49:18,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:49:18,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:49:18,886 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 13:49:18,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:49:18,928 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-16 13:49:18,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:49:18,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:49:18,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:49:18,945 INFO L225 Difference]: With dead ends: 290 [2020-10-16 13:49:18,945 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 13:49:18,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:49:18,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 13:49:19,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-16 13:49:19,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-16 13:49:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-16 13:49:19,013 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-16 13:49:19,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:49:19,014 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-16 13:49:19,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:49:19,014 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-16 13:49:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:49:19,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:49:19,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:49:19,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:49:19,016 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:49:19,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:49:19,017 INFO L82 PathProgramCache]: Analyzing trace with hash 2069729619, now seen corresponding path program 1 times [2020-10-16 13:49:19,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:49:19,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382083027] [2020-10-16 13:49:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:49:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:49:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:49:19,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382083027] [2020-10-16 13:49:19,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:49:19,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:49:19,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [781206473] [2020-10-16 13:49:19,151 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:49:19,152 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:49:19,154 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-16 13:49:19,155 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:49:19,192 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:49:19,222 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:49:19,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:49:19,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:49:19,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:49:19,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:49:19,224 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 4 states. [2020-10-16 13:49:19,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:49:19,265 INFO L93 Difference]: Finished difference Result 242 states and 605 transitions. [2020-10-16 13:49:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:49:19,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 13:49:19,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:49:19,268 INFO L225 Difference]: With dead ends: 242 [2020-10-16 13:49:19,268 INFO L226 Difference]: Without dead ends: 178 [2020-10-16 13:49:19,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:49:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-16 13:49:19,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-10-16 13:49:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-16 13:49:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 434 transitions. [2020-10-16 13:49:19,286 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 434 transitions. Word has length 9 [2020-10-16 13:49:19,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:49:19,286 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 434 transitions. [2020-10-16 13:49:19,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:49:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 434 transitions. [2020-10-16 13:49:19,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:49:19,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:49:19,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:49:19,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:49:19,288 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:49:19,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:49:19,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1183022512, now seen corresponding path program 1 times [2020-10-16 13:49:19,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:49:19,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704170847] [2020-10-16 13:49:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:49:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:49:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:49:19,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704170847] [2020-10-16 13:49:19,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:49:19,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:49:19,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [969136056] [2020-10-16 13:49:19,416 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:49:19,417 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:49:19,420 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 35 transitions. [2020-10-16 13:49:19,420 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:49:19,483 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2031#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:49:19,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:49:19,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:49:19,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:49:19,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:49:19,484 INFO L87 Difference]: Start difference. First operand 178 states and 434 transitions. Second operand 6 states. [2020-10-16 13:49:19,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:49:19,538 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2020-10-16 13:49:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:49:19,539 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-16 13:49:19,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:49:19,540 INFO L225 Difference]: With dead ends: 163 [2020-10-16 13:49:19,541 INFO L226 Difference]: Without dead ends: 126 [2020-10-16 13:49:19,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:49:19,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-16 13:49:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-16 13:49:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-16 13:49:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2020-10-16 13:49:19,549 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2020-10-16 13:49:19,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:49:19,550 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2020-10-16 13:49:19,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:49:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2020-10-16 13:49:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:49:19,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:49:19,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:49:19,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:49:19,552 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:49:19,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:49:19,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1548024821, now seen corresponding path program 1 times [2020-10-16 13:49:19,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:49:19,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605108233] [2020-10-16 13:49:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:49:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:49:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:49:19,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605108233] [2020-10-16 13:49:19,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:49:19,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:49:19,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [360015774] [2020-10-16 13:49:19,629 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:49:19,631 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:49:19,655 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-10-16 13:49:19,655 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:49:19,780 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2455#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:49:19,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:49:19,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:49:19,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:49:19,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:49:19,782 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand 7 states. [2020-10-16 13:49:19,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:49:19,843 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-10-16 13:49:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:49:19,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-16 13:49:19,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:49:19,845 INFO L225 Difference]: With dead ends: 118 [2020-10-16 13:49:19,845 INFO L226 Difference]: Without dead ends: 108 [2020-10-16 13:49:19,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:49:19,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-16 13:49:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-16 13:49:19,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-16 13:49:19,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-10-16 13:49:19,852 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-10-16 13:49:19,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:49:19,853 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-10-16 13:49:19,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:49:19,853 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-10-16 13:49:19,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:49:19,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:49:19,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:49:19,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:49:19,855 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:49:19,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:49:19,856 INFO L82 PathProgramCache]: Analyzing trace with hash 2137678742, now seen corresponding path program 1 times [2020-10-16 13:49:19,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:49:19,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430938910] [2020-10-16 13:49:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:49:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:49:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:49:19,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430938910] [2020-10-16 13:49:19,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:49:19,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:49:19,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [465547617] [2020-10-16 13:49:19,906 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:49:19,908 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:49:19,915 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-10-16 13:49:19,915 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:49:19,923 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:49:19,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:49:19,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:49:19,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:49:19,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:49:19,924 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 3 states. [2020-10-16 13:49:19,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:49:19,933 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-10-16 13:49:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:49:19,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 13:49:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:49:19,935 INFO L225 Difference]: With dead ends: 133 [2020-10-16 13:49:19,935 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 13:49:19,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:49:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 13:49:19,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-16 13:49:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 13:49:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-16 13:49:19,943 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-10-16 13:49:19,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:49:19,943 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-16 13:49:19,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:49:19,943 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-16 13:49:19,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:49:19,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:49:19,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:49:19,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:49:19,948 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:49:19,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:49:19,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1164645812, now seen corresponding path program 2 times [2020-10-16 13:49:19,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:49:19,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859613312] [2020-10-16 13:49:19,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:49:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:49:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:49:20,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859613312] [2020-10-16 13:49:20,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:49:20,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:49:20,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [32721412] [2020-10-16 13:49:20,026 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:49:20,028 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:49:20,036 INFO L258 McrAutomatonBuilder]: Finished intersection with 57 states and 105 transitions. [2020-10-16 13:49:20,036 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:49:20,069 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:49:20,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:49:20,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:49:20,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:49:20,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:49:20,071 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-16 13:49:20,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:49:20,085 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-10-16 13:49:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:49:20,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:49:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:49:20,086 INFO L225 Difference]: With dead ends: 67 [2020-10-16 13:49:20,087 INFO L226 Difference]: Without dead ends: 30 [2020-10-16 13:49:20,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:49:20,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-16 13:49:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-16 13:49:20,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-16 13:49:20,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-10-16 13:49:20,090 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-10-16 13:49:20,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:49:20,090 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-10-16 13:49:20,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:49:20,090 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-10-16 13:49:20,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:49:20,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:49:20,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:49:20,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:49:20,091 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:49:20,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:49:20,092 INFO L82 PathProgramCache]: Analyzing trace with hash 2098338434, now seen corresponding path program 3 times [2020-10-16 13:49:20,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:49:20,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406990541] [2020-10-16 13:49:20,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:49:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:49:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:49:20,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406990541] [2020-10-16 13:49:20,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:49:20,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:49:20,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1725288265] [2020-10-16 13:49:20,141 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:49:20,143 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:49:20,149 INFO L258 McrAutomatonBuilder]: Finished intersection with 41 states and 59 transitions. [2020-10-16 13:49:20,150 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:49:20,163 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:49:20,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:49:20,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:49:20,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:49:20,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:49:20,164 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-10-16 13:49:20,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:49:20,174 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-10-16 13:49:20,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:49:20,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:49:20,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:49:20,175 INFO L225 Difference]: With dead ends: 29 [2020-10-16 13:49:20,175 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:49:20,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:49:20,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:49:20,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:49:20,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:49:20,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:49:20,177 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 13:49:20,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:49:20,177 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:49:20,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:49:20,178 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:49:20,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:49:20,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:49:20,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:49:20 BasicIcfg [2020-10-16 13:49:20,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:49:20,185 INFO L168 Benchmark]: Toolchain (without parser) took 4256.89 ms. Allocated memory was 142.1 MB in the beginning and 244.8 MB in the end (delta: 102.8 MB). Free memory was 103.4 MB in the beginning and 133.6 MB in the end (delta: -30.2 MB). Peak memory consumption was 72.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:49:20,185 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:49:20,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.10 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 103.2 MB in the beginning and 161.8 MB in the end (delta: -58.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:49:20,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.06 ms. Allocated memory is still 203.9 MB. Free memory was 161.8 MB in the beginning and 159.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:49:20,188 INFO L168 Benchmark]: Boogie Preprocessor took 27.00 ms. Allocated memory is still 203.9 MB. Free memory was 159.4 MB in the beginning and 158.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-10-16 13:49:20,189 INFO L168 Benchmark]: RCFGBuilder took 435.65 ms. Allocated memory is still 203.9 MB. Free memory was 158.1 MB in the beginning and 135.5 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:49:20,190 INFO L168 Benchmark]: TraceAbstraction took 3076.97 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 135.5 MB in the beginning and 133.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:49:20,194 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 664.10 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 103.2 MB in the beginning and 161.8 MB in the end (delta: -58.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.06 ms. Allocated memory is still 203.9 MB. Free memory was 161.8 MB in the beginning and 159.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.00 ms. Allocated memory is still 203.9 MB. Free memory was 159.4 MB in the beginning and 158.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.65 ms. Allocated memory is still 203.9 MB. Free memory was 158.1 MB in the beginning and 135.5 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3076.97 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 135.5 MB in the beginning and 133.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 674 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 36 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2842 MoverChecksTotal - 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 141 SDtfs, 106 SDslu, 217 SDs, 0 SdLazy, 103 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2838 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...