/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-ext/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:35:22,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:35:22,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:35:22,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:35:22,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:35:22,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:35:22,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:35:22,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:35:22,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:35:22,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:35:22,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:35:22,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:35:22,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:35:22,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:35:22,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:35:22,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:35:22,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:35:22,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:35:22,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:35:22,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:35:22,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:35:22,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:35:22,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:35:22,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:35:22,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:35:22,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:35:22,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:35:22,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:35:22,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:35:22,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:35:22,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:35:22,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:35:22,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:35:22,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:35:22,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:35:22,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:35:22,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:35:22,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:35:22,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:35:22,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:35:22,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:35:22,747 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 12:35:22,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:35:22,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:35:22,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:35:22,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:35:22,771 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:35:22,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:35:22,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:35:22,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:35:22,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:35:22,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:35:22,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:35:22,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:35:22,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:35:22,773 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:35:22,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:35:22,773 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:35:22,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:35:22,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:35:22,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:35:22,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:35:22,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:35:22,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:35:22,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:35:22,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:35:22,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:35:22,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:35:22,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:35:22,775 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:35:22,776 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:35:22,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:35:22,776 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:35:23,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:35:23,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:35:23,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:35:23,086 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:35:23,086 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:35:23,087 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-16 12:35:23,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e6392c89/9ff58300044f4364b15dfe581e53ce64/FLAGd0bcf46e2 [2020-10-16 12:35:23,715 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:35:23,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-16 12:35:23,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e6392c89/9ff58300044f4364b15dfe581e53ce64/FLAGd0bcf46e2 [2020-10-16 12:35:23,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e6392c89/9ff58300044f4364b15dfe581e53ce64 [2020-10-16 12:35:23,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:35:24,000 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:35:24,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:35:24,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:35:24,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:35:24,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:35:23" (1/1) ... [2020-10-16 12:35:24,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e798a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:24, skipping insertion in model container [2020-10-16 12:35:24,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:35:23" (1/1) ... [2020-10-16 12:35:24,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:35:24,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:35:24,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:35:24,570 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:35:24,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:35:24,755 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:35:24,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:24 WrapperNode [2020-10-16 12:35:24,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:35:24,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:35:24,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:35:24,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:35:24,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:24" (1/1) ... [2020-10-16 12:35:24,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:24" (1/1) ... [2020-10-16 12:35:24,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:35:24,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:35:24,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:35:24,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:35:24,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:24" (1/1) ... [2020-10-16 12:35:24,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:24" (1/1) ... [2020-10-16 12:35:24,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:24" (1/1) ... [2020-10-16 12:35:24,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:24" (1/1) ... [2020-10-16 12:35:24,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:24" (1/1) ... [2020-10-16 12:35:24,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:24" (1/1) ... [2020-10-16 12:35:24,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:24" (1/1) ... [2020-10-16 12:35:24,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:35:24,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:35:24,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:35:24,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:35:24,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:24" (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 12:35:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 12:35:24,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 12:35:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:35:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:35:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:35:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:35:24,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:35:24,933 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 12:35:25,316 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:35:25,317 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-16 12:35:25,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:35:25 BoogieIcfgContainer [2020-10-16 12:35:25,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:35:25,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:35:25,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:35:25,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:35:25,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:35:23" (1/3) ... [2020-10-16 12:35:25,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb1a0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:35:25, skipping insertion in model container [2020-10-16 12:35:25,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:24" (2/3) ... [2020-10-16 12:35:25,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb1a0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:35:25, skipping insertion in model container [2020-10-16 12:35:25,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:35:25" (3/3) ... [2020-10-16 12:35:25,329 INFO L111 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-10-16 12:35:25,341 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:35:25,342 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:35:25,350 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 12:35:25,351 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:35:25,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:25,381 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:25,381 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:25,381 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:25,382 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:25,383 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:25,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:25,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:25,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:25,391 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:25,398 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:35:25,415 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:35:25,439 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:35:25,439 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:35:25,439 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:35:25,440 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:35:25,440 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:35:25,440 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:35:25,440 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:35:25,441 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:35:25,457 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:35:25,457 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 92 transitions, 189 flow [2020-10-16 12:35:25,460 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 92 transitions, 189 flow [2020-10-16 12:35:25,461 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-10-16 12:35:25,505 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-10-16 12:35:25,506 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:35:25,515 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 24/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2020-10-16 12:35:25,520 INFO L117 LiptonReduction]: Number of co-enabled transitions 2992 [2020-10-16 12:35:26,352 INFO L132 LiptonReduction]: Checked pairs total: 10306 [2020-10-16 12:35:26,352 INFO L134 LiptonReduction]: Total number of compositions: 48 [2020-10-16 12:35:26,361 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 53 transitions, 111 flow [2020-10-16 12:35:26,386 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 326 states. [2020-10-16 12:35:26,388 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states. [2020-10-16 12:35:26,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:35:26,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:26,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:35:26,397 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:26,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:26,403 INFO L82 PathProgramCache]: Analyzing trace with hash 12205615, now seen corresponding path program 1 times [2020-10-16 12:35:26,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:26,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102364765] [2020-10-16 12:35:26,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:26,596 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 12:35:26,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102364765] [2020-10-16 12:35:26,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:26,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:35:26,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1897334104] [2020-10-16 12:35:26,600 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:26,603 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:26,617 INFO L258 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-16 12:35:26,617 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:26,621 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:26,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 12:35:26,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:26,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 12:35:26,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:35:26,640 INFO L87 Difference]: Start difference. First operand 326 states. Second operand 2 states. [2020-10-16 12:35:26,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:26,663 INFO L93 Difference]: Finished difference Result 326 states and 830 transitions. [2020-10-16 12:35:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 12:35:26,664 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-16 12:35:26,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:26,681 INFO L225 Difference]: With dead ends: 326 [2020-10-16 12:35:26,682 INFO L226 Difference]: Without dead ends: 317 [2020-10-16 12:35:26,683 INFO L677 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 [2020-10-16 12:35:26,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-16 12:35:26,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2020-10-16 12:35:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-16 12:35:26,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 812 transitions. [2020-10-16 12:35:26,760 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 812 transitions. Word has length 4 [2020-10-16 12:35:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:26,760 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 812 transitions. [2020-10-16 12:35:26,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 12:35:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 812 transitions. [2020-10-16 12:35:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:35:26,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:26,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:26,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:35:26,763 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:26,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:26,763 INFO L82 PathProgramCache]: Analyzing trace with hash -295132035, now seen corresponding path program 1 times [2020-10-16 12:35:26,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:26,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504181238] [2020-10-16 12:35:26,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:26,860 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 12:35:26,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504181238] [2020-10-16 12:35:26,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:26,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:35:26,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [561396672] [2020-10-16 12:35:26,863 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:26,863 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:26,864 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-16 12:35:26,865 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:26,865 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:26,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:26,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:26,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:26,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:26,868 INFO L87 Difference]: Start difference. First operand 317 states and 812 transitions. Second operand 3 states. [2020-10-16 12:35:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:26,900 INFO L93 Difference]: Finished difference Result 315 states and 792 transitions. [2020-10-16 12:35:26,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:26,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 12:35:26,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:26,905 INFO L225 Difference]: With dead ends: 315 [2020-10-16 12:35:26,905 INFO L226 Difference]: Without dead ends: 273 [2020-10-16 12:35:26,906 INFO L677 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 [2020-10-16 12:35:26,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-16 12:35:26,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 267. [2020-10-16 12:35:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-16 12:35:26,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 687 transitions. [2020-10-16 12:35:26,931 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 687 transitions. Word has length 10 [2020-10-16 12:35:26,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:26,932 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 687 transitions. [2020-10-16 12:35:26,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 687 transitions. [2020-10-16 12:35:26,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:35:26,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:26,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:26,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:35:26,934 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:26,935 INFO L82 PathProgramCache]: Analyzing trace with hash -819868373, now seen corresponding path program 1 times [2020-10-16 12:35:26,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:26,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508347145] [2020-10-16 12:35:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:26,979 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 12:35:26,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508347145] [2020-10-16 12:35:26,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:26,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:35:26,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1421580442] [2020-10-16 12:35:26,981 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:26,982 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:26,983 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-16 12:35:26,983 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:26,983 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:26,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:26,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:26,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:26,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:26,985 INFO L87 Difference]: Start difference. First operand 267 states and 687 transitions. Second operand 3 states. [2020-10-16 12:35:27,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:27,010 INFO L93 Difference]: Finished difference Result 255 states and 652 transitions. [2020-10-16 12:35:27,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:27,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 12:35:27,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:27,014 INFO L225 Difference]: With dead ends: 255 [2020-10-16 12:35:27,014 INFO L226 Difference]: Without dead ends: 213 [2020-10-16 12:35:27,014 INFO L677 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 [2020-10-16 12:35:27,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-16 12:35:27,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-10-16 12:35:27,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-16 12:35:27,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 554 transitions. [2020-10-16 12:35:27,030 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 554 transitions. Word has length 10 [2020-10-16 12:35:27,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:27,031 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 554 transitions. [2020-10-16 12:35:27,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:27,031 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 554 transitions. [2020-10-16 12:35:27,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:35:27,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:27,034 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 12:35:27,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:35:27,035 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:27,035 INFO L82 PathProgramCache]: Analyzing trace with hash 839349889, now seen corresponding path program 1 times [2020-10-16 12:35:27,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:27,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613725691] [2020-10-16 12:35:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:27,087 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 12:35:27,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613725691] [2020-10-16 12:35:27,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:27,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:35:27,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [707131309] [2020-10-16 12:35:27,088 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:27,090 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:27,093 INFO L258 McrAutomatonBuilder]: Finished intersection with 47 states and 69 transitions. [2020-10-16 12:35:27,093 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:27,102 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:27,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:27,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:27,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:27,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:27,104 INFO L87 Difference]: Start difference. First operand 213 states and 554 transitions. Second operand 3 states. [2020-10-16 12:35:27,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:27,163 INFO L93 Difference]: Finished difference Result 311 states and 780 transitions. [2020-10-16 12:35:27,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:27,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 12:35:27,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:27,167 INFO L225 Difference]: With dead ends: 311 [2020-10-16 12:35:27,167 INFO L226 Difference]: Without dead ends: 238 [2020-10-16 12:35:27,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 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 12:35:27,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-16 12:35:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 225. [2020-10-16 12:35:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-16 12:35:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 560 transitions. [2020-10-16 12:35:27,180 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 560 transitions. Word has length 17 [2020-10-16 12:35:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:27,182 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 560 transitions. [2020-10-16 12:35:27,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:27,182 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 560 transitions. [2020-10-16 12:35:27,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:35:27,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:27,184 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 12:35:27,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:35:27,185 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:27,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:27,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1816049141, now seen corresponding path program 2 times [2020-10-16 12:35:27,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:27,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170282359] [2020-10-16 12:35:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:27,241 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 12:35:27,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170282359] [2020-10-16 12:35:27,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:27,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:35:27,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1157917641] [2020-10-16 12:35:27,243 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:27,245 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:27,247 INFO L258 McrAutomatonBuilder]: Finished intersection with 43 states and 64 transitions. [2020-10-16 12:35:27,248 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:27,265 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3992#(not (= 2 ~x~0))] [2020-10-16 12:35:27,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:35:27,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:27,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:35:27,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:35:27,266 INFO L87 Difference]: Start difference. First operand 225 states and 560 transitions. Second operand 4 states. [2020-10-16 12:35:27,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:27,310 INFO L93 Difference]: Finished difference Result 459 states and 1059 transitions. [2020-10-16 12:35:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:35:27,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 12:35:27,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:27,315 INFO L225 Difference]: With dead ends: 459 [2020-10-16 12:35:27,315 INFO L226 Difference]: Without dead ends: 451 [2020-10-16 12:35:27,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 3 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 12:35:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-16 12:35:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 277. [2020-10-16 12:35:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-16 12:35:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 676 transitions. [2020-10-16 12:35:27,329 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 676 transitions. Word has length 17 [2020-10-16 12:35:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:27,329 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 676 transitions. [2020-10-16 12:35:27,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:35:27,330 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 676 transitions. [2020-10-16 12:35:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:35:27,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:27,332 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 12:35:27,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:35:27,332 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:27,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:27,333 INFO L82 PathProgramCache]: Analyzing trace with hash 360564935, now seen corresponding path program 1 times [2020-10-16 12:35:27,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:27,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108999853] [2020-10-16 12:35:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:27,372 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 12:35:27,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108999853] [2020-10-16 12:35:27,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:27,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:35:27,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1113698036] [2020-10-16 12:35:27,374 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:27,375 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:27,377 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 59 transitions. [2020-10-16 12:35:27,377 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:27,406 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:27,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:27,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:27,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:27,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:27,407 INFO L87 Difference]: Start difference. First operand 277 states and 676 transitions. Second operand 3 states. [2020-10-16 12:35:27,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:27,445 INFO L93 Difference]: Finished difference Result 231 states and 490 transitions. [2020-10-16 12:35:27,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:27,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 12:35:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:27,447 INFO L225 Difference]: With dead ends: 231 [2020-10-16 12:35:27,447 INFO L226 Difference]: Without dead ends: 149 [2020-10-16 12:35:27,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 1 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 12:35:27,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-16 12:35:27,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 130. [2020-10-16 12:35:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-16 12:35:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 248 transitions. [2020-10-16 12:35:27,453 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 248 transitions. Word has length 17 [2020-10-16 12:35:27,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:27,453 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 248 transitions. [2020-10-16 12:35:27,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:27,454 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 248 transitions. [2020-10-16 12:35:27,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:35:27,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:27,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:27,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:35:27,455 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:27,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:27,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1792170110, now seen corresponding path program 1 times [2020-10-16 12:35:27,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:27,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253005845] [2020-10-16 12:35:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:27,489 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 12:35:27,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253005845] [2020-10-16 12:35:27,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:27,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:35:27,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1654634172] [2020-10-16 12:35:27,490 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:27,491 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:27,494 INFO L258 McrAutomatonBuilder]: Finished intersection with 55 states and 81 transitions. [2020-10-16 12:35:27,494 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:27,535 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5506#(<= 1 ~b2~0)] [2020-10-16 12:35:27,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:35:27,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:27,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:35:27,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:35:27,536 INFO L87 Difference]: Start difference. First operand 130 states and 248 transitions. Second operand 4 states. [2020-10-16 12:35:27,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:27,554 INFO L93 Difference]: Finished difference Result 131 states and 245 transitions. [2020-10-16 12:35:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:35:27,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-16 12:35:27,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:27,556 INFO L225 Difference]: With dead ends: 131 [2020-10-16 12:35:27,556 INFO L226 Difference]: Without dead ends: 113 [2020-10-16 12:35:27,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:35:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-16 12:35:27,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-16 12:35:27,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-16 12:35:27,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 213 transitions. [2020-10-16 12:35:27,561 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 213 transitions. Word has length 20 [2020-10-16 12:35:27,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:27,562 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 213 transitions. [2020-10-16 12:35:27,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:35:27,562 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 213 transitions. [2020-10-16 12:35:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:35:27,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:27,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:27,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:35:27,563 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:27,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1787104108, now seen corresponding path program 1 times [2020-10-16 12:35:27,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:27,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250729881] [2020-10-16 12:35:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:27,591 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 12:35:27,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250729881] [2020-10-16 12:35:27,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:27,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:35:27,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1240003793] [2020-10-16 12:35:27,593 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:27,594 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:27,597 INFO L258 McrAutomatonBuilder]: Finished intersection with 55 states and 81 transitions. [2020-10-16 12:35:27,597 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:27,614 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5867#(<= 1 ~b1~0)] [2020-10-16 12:35:27,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:35:27,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:27,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:35:27,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:35:27,615 INFO L87 Difference]: Start difference. First operand 113 states and 213 transitions. Second operand 4 states. [2020-10-16 12:35:27,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:27,624 INFO L93 Difference]: Finished difference Result 73 states and 151 transitions. [2020-10-16 12:35:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:27,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-16 12:35:27,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:27,625 INFO L225 Difference]: With dead ends: 73 [2020-10-16 12:35:27,625 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:35:27,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:35:27,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:35:27,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:35:27,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:35:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:35:27,627 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-16 12:35:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:27,627 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:35:27,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:35:27,627 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:35:27,627 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:35:27,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:35:27,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:35:27 BasicIcfg [2020-10-16 12:35:27,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:35:27,634 INFO L168 Benchmark]: Toolchain (without parser) took 3633.63 ms. Allocated memory was 147.8 MB in the beginning and 246.4 MB in the end (delta: 98.6 MB). Free memory was 102.3 MB in the beginning and 152.6 MB in the end (delta: -50.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:27,635 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:35:27,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.30 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.1 MB in the beginning and 165.0 MB in the end (delta: -62.9 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:27,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.42 ms. Allocated memory is still 205.0 MB. Free memory was 164.3 MB in the beginning and 162.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:27,637 INFO L168 Benchmark]: Boogie Preprocessor took 30.48 ms. Allocated memory is still 205.0 MB. Free memory was 162.4 MB in the beginning and 161.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:27,638 INFO L168 Benchmark]: RCFGBuilder took 460.13 ms. Allocated memory is still 205.0 MB. Free memory was 161.1 MB in the beginning and 138.5 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:27,639 INFO L168 Benchmark]: TraceAbstraction took 2311.26 ms. Allocated memory was 205.0 MB in the beginning and 246.4 MB in the end (delta: 41.4 MB). Free memory was 137.8 MB in the beginning and 152.6 MB in the end (delta: -14.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:27,643 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 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 756.30 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.1 MB in the beginning and 165.0 MB in the end (delta: -62.9 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 69.42 ms. Allocated memory is still 205.0 MB. Free memory was 164.3 MB in the beginning and 162.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.48 ms. Allocated memory is still 205.0 MB. Free memory was 162.4 MB in the beginning and 161.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.13 ms. Allocated memory is still 205.0 MB. Free memory was 161.1 MB in the beginning and 138.5 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2311.26 ms. Allocated memory was 205.0 MB in the beginning and 246.4 MB in the end (delta: 41.4 MB). Free memory was 137.8 MB in the beginning and 152.6 MB in the end (delta: -14.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1160 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 295 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.8s, 72 PlacesBefore, 41 PlacesAfterwards, 92 TransitionsBefore, 53 TransitionsAfterwards, 2992 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 48 TotalNumberOfCompositions, 10306 MoverChecksTotal - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 724]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 69 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 452 SDtfs, 240 SDslu, 267 SDs, 0 SdLazy, 101 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 99 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=326occurred 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, 212 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 2905 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...