/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 20:48:36,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 20:48:36,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 20:48:36,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 20:48:36,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 20:48:36,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 20:48:36,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 20:48:36,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 20:48:36,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 20:48:36,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 20:48:36,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 20:48:36,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 20:48:36,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 20:48:36,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 20:48:36,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 20:48:36,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 20:48:36,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 20:48:36,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 20:48:36,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 20:48:36,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 20:48:36,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 20:48:36,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 20:48:36,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 20:48:36,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 20:48:36,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 20:48:36,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 20:48:36,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 20:48:36,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 20:48:36,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 20:48:36,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 20:48:36,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 20:48:36,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 20:48:36,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 20:48:36,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 20:48:36,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 20:48:36,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 20:48:36,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 20:48:36,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 20:48:36,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 20:48:36,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 20:48:36,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 20:48:36,758 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 20:48:36,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 20:48:36,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 20:48:36,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 20:48:36,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 20:48:36,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 20:48:36,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 20:48:36,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 20:48:36,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 20:48:36,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 20:48:36,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 20:48:36,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 20:48:36,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 20:48:36,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 20:48:36,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 20:48:36,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 20:48:36,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 20:48:36,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 20:48:36,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 20:48:36,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 20:48:36,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 20:48:36,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 20:48:36,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 20:48:36,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 20:48:36,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 20:48:37,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 20:48:37,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 20:48:37,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 20:48:37,092 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 20:48:37,094 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 20:48:37,095 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-15 20:48:37,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab9ed29d1/d9a24373875e4c9a9d15da2dd44dad6e/FLAG36b32d5d0 [2020-10-15 20:48:37,759 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 20:48:37,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-15 20:48:37,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab9ed29d1/d9a24373875e4c9a9d15da2dd44dad6e/FLAG36b32d5d0 [2020-10-15 20:48:37,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab9ed29d1/d9a24373875e4c9a9d15da2dd44dad6e [2020-10-15 20:48:37,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 20:48:37,998 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 20:48:38,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 20:48:38,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 20:48:38,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 20:48:38,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:48:37" (1/1) ... [2020-10-15 20:48:38,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@351dd234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:38, skipping insertion in model container [2020-10-15 20:48:38,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:48:37" (1/1) ... [2020-10-15 20:48:38,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 20:48:38,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 20:48:38,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:48:38,621 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 20:48:38,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:48:38,816 INFO L208 MainTranslator]: Completed translation [2020-10-15 20:48:38,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:38 WrapperNode [2020-10-15 20:48:38,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 20:48:38,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 20:48:38,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 20:48:38,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 20:48:38,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:38" (1/1) ... [2020-10-15 20:48:38,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:38" (1/1) ... [2020-10-15 20:48:38,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 20:48:38,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 20:48:38,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 20:48:38,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 20:48:38,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:38" (1/1) ... [2020-10-15 20:48:38,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:38" (1/1) ... [2020-10-15 20:48:38,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:38" (1/1) ... [2020-10-15 20:48:38,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:38" (1/1) ... [2020-10-15 20:48:38,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:38" (1/1) ... [2020-10-15 20:48:38,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:38" (1/1) ... [2020-10-15 20:48:38,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:38" (1/1) ... [2020-10-15 20:48:38,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 20:48:38,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 20:48:38,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 20:48:38,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 20:48:38,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 20:48:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-15 20:48:39,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-15 20:48:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 20:48:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 20:48:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 20:48:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 20:48:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 20:48:39,031 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 20:48:39,359 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 20:48:39,359 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-15 20:48:39,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:48:39 BoogieIcfgContainer [2020-10-15 20:48:39,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 20:48:39,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 20:48:39,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 20:48:39,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 20:48:39,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:48:37" (1/3) ... [2020-10-15 20:48:39,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574559ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:48:39, skipping insertion in model container [2020-10-15 20:48:39,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:38" (2/3) ... [2020-10-15 20:48:39,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574559ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:48:39, skipping insertion in model container [2020-10-15 20:48:39,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:48:39" (3/3) ... [2020-10-15 20:48:39,371 INFO L111 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-10-15 20:48:39,382 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 20:48:39,383 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 20:48:39,390 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 20:48:39,391 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 20:48:39,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:39,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:39,416 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:39,416 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:39,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:39,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:39,421 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:39,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:39,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:39,422 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:39,442 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 20:48:39,464 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 20:48:39,464 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 20:48:39,464 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 20:48:39,465 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 20:48:39,469 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 20:48:39,469 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 20:48:39,470 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 20:48:39,470 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 20:48:39,488 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 20:48:39,491 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 92 transitions, 189 flow [2020-10-15 20:48:39,494 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 92 transitions, 189 flow [2020-10-15 20:48:39,496 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-10-15 20:48:39,544 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-10-15 20:48:39,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 20:48:39,556 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. [2020-10-15 20:48:39,563 INFO L117 LiptonReduction]: Number of co-enabled transitions 2992 [2020-10-15 20:48:40,939 INFO L132 LiptonReduction]: Checked pairs total: 7520 [2020-10-15 20:48:40,940 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-15 20:48:40,948 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 51 transitions, 107 flow [2020-10-15 20:48:40,974 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 291 states. [2020-10-15 20:48:40,977 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2020-10-15 20:48:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 20:48:40,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:40,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 20:48:40,987 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:40,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:40,994 INFO L82 PathProgramCache]: Analyzing trace with hash 12384667, now seen corresponding path program 1 times [2020-10-15 20:48:41,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:41,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035481561] [2020-10-15 20:48:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:41,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035481561] [2020-10-15 20:48:41,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:41,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:48:41,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915710274] [2020-10-15 20:48:41,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 20:48:41,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:41,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 20:48:41,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 20:48:41,183 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 2 states. [2020-10-15 20:48:41,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:41,216 INFO L93 Difference]: Finished difference Result 291 states and 750 transitions. [2020-10-15 20:48:41,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 20:48:41,218 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-15 20:48:41,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:41,236 INFO L225 Difference]: With dead ends: 291 [2020-10-15 20:48:41,236 INFO L226 Difference]: Without dead ends: 282 [2020-10-15 20:48:41,237 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 [2020-10-15 20:48:41,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-15 20:48:41,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-15 20:48:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-15 20:48:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 732 transitions. [2020-10-15 20:48:41,308 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 732 transitions. Word has length 4 [2020-10-15 20:48:41,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:41,308 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 732 transitions. [2020-10-15 20:48:41,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 20:48:41,309 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 732 transitions. [2020-10-15 20:48:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 20:48:41,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:41,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:41,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 20:48:41,311 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:41,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:41,311 INFO L82 PathProgramCache]: Analyzing trace with hash 27980612, now seen corresponding path program 1 times [2020-10-15 20:48:41,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:41,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635627817] [2020-10-15 20:48:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:41,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635627817] [2020-10-15 20:48:41,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:41,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:48:41,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441303537] [2020-10-15 20:48:41,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:48:41,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:41,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:48:41,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:41,374 INFO L87 Difference]: Start difference. First operand 282 states and 732 transitions. Second operand 3 states. [2020-10-15 20:48:41,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:41,408 INFO L93 Difference]: Finished difference Result 281 states and 714 transitions. [2020-10-15 20:48:41,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:48:41,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 20:48:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:41,412 INFO L225 Difference]: With dead ends: 281 [2020-10-15 20:48:41,412 INFO L226 Difference]: Without dead ends: 242 [2020-10-15 20:48:41,413 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 [2020-10-15 20:48:41,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-15 20:48:41,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 236. [2020-10-15 20:48:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-15 20:48:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 615 transitions. [2020-10-15 20:48:41,433 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 615 transitions. Word has length 9 [2020-10-15 20:48:41,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:41,433 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 615 transitions. [2020-10-15 20:48:41,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:48:41,433 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 615 transitions. [2020-10-15 20:48:41,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 20:48:41,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:41,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:41,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 20:48:41,435 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:41,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:41,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1037274544, now seen corresponding path program 1 times [2020-10-15 20:48:41,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:41,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512930322] [2020-10-15 20:48:41,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:41,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512930322] [2020-10-15 20:48:41,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:41,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:48:41,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338881409] [2020-10-15 20:48:41,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:48:41,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:41,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:48:41,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:41,478 INFO L87 Difference]: Start difference. First operand 236 states and 615 transitions. Second operand 3 states. [2020-10-15 20:48:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:41,501 INFO L93 Difference]: Finished difference Result 225 states and 582 transitions. [2020-10-15 20:48:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:48:41,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 20:48:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:41,504 INFO L225 Difference]: With dead ends: 225 [2020-10-15 20:48:41,504 INFO L226 Difference]: Without dead ends: 186 [2020-10-15 20:48:41,504 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 [2020-10-15 20:48:41,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-15 20:48:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-10-15 20:48:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-15 20:48:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 490 transitions. [2020-10-15 20:48:41,517 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 490 transitions. Word has length 9 [2020-10-15 20:48:41,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:41,517 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 490 transitions. [2020-10-15 20:48:41,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:48:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 490 transitions. [2020-10-15 20:48:41,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:48:41,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:41,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:41,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 20:48:41,520 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:41,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:41,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1540220195, now seen corresponding path program 1 times [2020-10-15 20:48:41,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:41,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230275099] [2020-10-15 20:48:41,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:41,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230275099] [2020-10-15 20:48:41,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:41,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:48:41,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405402211] [2020-10-15 20:48:41,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:48:41,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:41,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:48:41,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:41,573 INFO L87 Difference]: Start difference. First operand 186 states and 490 transitions. Second operand 3 states. [2020-10-15 20:48:41,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:41,594 INFO L93 Difference]: Finished difference Result 308 states and 768 transitions. [2020-10-15 20:48:41,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:48:41,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-15 20:48:41,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:41,597 INFO L225 Difference]: With dead ends: 308 [2020-10-15 20:48:41,597 INFO L226 Difference]: Without dead ends: 306 [2020-10-15 20:48:41,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:41,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-15 20:48:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 229. [2020-10-15 20:48:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-15 20:48:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 602 transitions. [2020-10-15 20:48:41,609 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 602 transitions. Word has length 15 [2020-10-15 20:48:41,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:41,610 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 602 transitions. [2020-10-15 20:48:41,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:48:41,610 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 602 transitions. [2020-10-15 20:48:41,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:48:41,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:41,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:41,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 20:48:41,613 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:41,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:41,614 INFO L82 PathProgramCache]: Analyzing trace with hash 988190489, now seen corresponding path program 1 times [2020-10-15 20:48:41,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:41,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180521672] [2020-10-15 20:48:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:41,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180521672] [2020-10-15 20:48:41,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:41,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:48:41,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610528472] [2020-10-15 20:48:41,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:48:41,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:41,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:48:41,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:41,650 INFO L87 Difference]: Start difference. First operand 229 states and 602 transitions. Second operand 3 states. [2020-10-15 20:48:41,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:41,702 INFO L93 Difference]: Finished difference Result 312 states and 770 transitions. [2020-10-15 20:48:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:48:41,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-15 20:48:41,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:41,705 INFO L225 Difference]: With dead ends: 312 [2020-10-15 20:48:41,705 INFO L226 Difference]: Without dead ends: 237 [2020-10-15 20:48:41,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:41,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-15 20:48:41,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 216. [2020-10-15 20:48:41,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-15 20:48:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 534 transitions. [2020-10-15 20:48:41,714 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 534 transitions. Word has length 15 [2020-10-15 20:48:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:41,715 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 534 transitions. [2020-10-15 20:48:41,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:48:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 534 transitions. [2020-10-15 20:48:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:48:41,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:41,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:41,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 20:48:41,718 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:41,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:41,718 INFO L82 PathProgramCache]: Analyzing trace with hash -795157281, now seen corresponding path program 2 times [2020-10-15 20:48:41,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:41,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149893889] [2020-10-15 20:48:41,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:41,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149893889] [2020-10-15 20:48:41,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:41,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:48:41,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651346387] [2020-10-15 20:48:41,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:48:41,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:41,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:48:41,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:41,781 INFO L87 Difference]: Start difference. First operand 216 states and 534 transitions. Second operand 3 states. [2020-10-15 20:48:41,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:41,814 INFO L93 Difference]: Finished difference Result 293 states and 674 transitions. [2020-10-15 20:48:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:48:41,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-15 20:48:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:41,818 INFO L225 Difference]: With dead ends: 293 [2020-10-15 20:48:41,818 INFO L226 Difference]: Without dead ends: 293 [2020-10-15 20:48:41,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:41,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-15 20:48:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 216. [2020-10-15 20:48:41,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-15 20:48:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 522 transitions. [2020-10-15 20:48:41,829 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 522 transitions. Word has length 15 [2020-10-15 20:48:41,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:41,841 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 522 transitions. [2020-10-15 20:48:41,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:48:41,842 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 522 transitions. [2020-10-15 20:48:41,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:48:41,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:41,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:41,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 20:48:41,846 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:41,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:41,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1884700835, now seen corresponding path program 2 times [2020-10-15 20:48:41,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:41,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642248207] [2020-10-15 20:48:41,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:41,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:41,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642248207] [2020-10-15 20:48:41,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:41,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:48:41,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898521824] [2020-10-15 20:48:41,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:48:41,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:41,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:48:41,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:41,907 INFO L87 Difference]: Start difference. First operand 216 states and 522 transitions. Second operand 3 states. [2020-10-15 20:48:41,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:41,952 INFO L93 Difference]: Finished difference Result 181 states and 375 transitions. [2020-10-15 20:48:41,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:48:41,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-15 20:48:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:41,954 INFO L225 Difference]: With dead ends: 181 [2020-10-15 20:48:41,954 INFO L226 Difference]: Without dead ends: 115 [2020-10-15 20:48:41,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:41,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-15 20:48:41,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-10-15 20:48:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-15 20:48:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 190 transitions. [2020-10-15 20:48:41,959 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 190 transitions. Word has length 15 [2020-10-15 20:48:41,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:41,959 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 190 transitions. [2020-10-15 20:48:41,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:48:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 190 transitions. [2020-10-15 20:48:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 20:48:41,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:41,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:41,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 20:48:41,961 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:41,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:41,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1567500834, now seen corresponding path program 1 times [2020-10-15 20:48:41,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:41,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989339572] [2020-10-15 20:48:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:41,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989339572] [2020-10-15 20:48:41,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:41,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:48:41,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821003174] [2020-10-15 20:48:41,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:48:41,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:41,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:48:41,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:41,991 INFO L87 Difference]: Start difference. First operand 96 states and 190 transitions. Second operand 3 states. [2020-10-15 20:48:42,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:42,003 INFO L93 Difference]: Finished difference Result 98 states and 191 transitions. [2020-10-15 20:48:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:48:42,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-15 20:48:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:42,005 INFO L225 Difference]: With dead ends: 98 [2020-10-15 20:48:42,005 INFO L226 Difference]: Without dead ends: 81 [2020-10-15 20:48:42,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-15 20:48:42,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-15 20:48:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-15 20:48:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 159 transitions. [2020-10-15 20:48:42,023 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 159 transitions. Word has length 17 [2020-10-15 20:48:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:42,023 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 159 transitions. [2020-10-15 20:48:42,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:48:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 159 transitions. [2020-10-15 20:48:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 20:48:42,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:42,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:42,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 20:48:42,025 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:42,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:42,025 INFO L82 PathProgramCache]: Analyzing trace with hash 322655978, now seen corresponding path program 1 times [2020-10-15 20:48:42,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:42,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623352383] [2020-10-15 20:48:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:42,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623352383] [2020-10-15 20:48:42,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:42,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:48:42,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422062844] [2020-10-15 20:48:42,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:48:42,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:42,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:48:42,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:42,052 INFO L87 Difference]: Start difference. First operand 81 states and 159 transitions. Second operand 3 states. [2020-10-15 20:48:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:42,058 INFO L93 Difference]: Finished difference Result 56 states and 119 transitions. [2020-10-15 20:48:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:48:42,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-15 20:48:42,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:42,059 INFO L225 Difference]: With dead ends: 56 [2020-10-15 20:48:42,059 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 20:48:42,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:42,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 20:48:42,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 20:48:42,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 20:48:42,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 20:48:42,061 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 20:48:42,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:42,061 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 20:48:42,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:48:42,061 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 20:48:42,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 20:48:42,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 20:48:42,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:48:42 BasicIcfg [2020-10-15 20:48:42,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 20:48:42,069 INFO L168 Benchmark]: Toolchain (without parser) took 4070.16 ms. Allocated memory was 249.0 MB in the beginning and 367.0 MB in the end (delta: 118.0 MB). Free memory was 204.1 MB in the beginning and 326.9 MB in the end (delta: -122.8 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:48:42,069 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:48:42,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 818.70 ms. Allocated memory was 249.0 MB in the beginning and 306.7 MB in the end (delta: 57.7 MB). Free memory was 204.1 MB in the beginning and 264.4 MB in the end (delta: -60.3 MB). Peak memory consumption was 32.7 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:42,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.50 ms. Allocated memory is still 306.7 MB. Free memory was 264.4 MB in the beginning and 261.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:42,072 INFO L168 Benchmark]: Boogie Preprocessor took 59.40 ms. Allocated memory is still 306.7 MB. Free memory was 261.9 MB in the beginning and 259.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:42,073 INFO L168 Benchmark]: RCFGBuilder took 403.91 ms. Allocated memory is still 306.7 MB. Free memory was 259.4 MB in the beginning and 237.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:42,074 INFO L168 Benchmark]: TraceAbstraction took 2702.88 ms. Allocated memory was 306.7 MB in the beginning and 367.0 MB in the end (delta: 60.3 MB). Free memory was 235.1 MB in the beginning and 326.9 MB in the end (delta: -91.9 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:48:42,078 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 818.70 ms. Allocated memory was 249.0 MB in the beginning and 306.7 MB in the end (delta: 57.7 MB). Free memory was 204.1 MB in the beginning and 264.4 MB in the end (delta: -60.3 MB). Peak memory consumption was 32.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 78.50 ms. Allocated memory is still 306.7 MB. Free memory was 264.4 MB in the beginning and 261.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 59.40 ms. Allocated memory is still 306.7 MB. Free memory was 261.9 MB in the beginning and 259.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 403.91 ms. Allocated memory is still 306.7 MB. Free memory was 259.4 MB in the beginning and 237.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2702.88 ms. Allocated memory was 306.7 MB in the beginning and 367.0 MB in the end (delta: 60.3 MB). Free memory was 235.1 MB in the beginning and 326.9 MB in the end (delta: -91.9 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1508 VarBasedMoverChecksPositive, 102 VarBasedMoverChecksNegative, 41 SemBasedMoverChecksPositive, 61 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 395 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 72 PlacesBefore, 39 PlacesAfterwards, 92 TransitionsBefore, 51 TransitionsAfterwards, 2992 CoEnabledTransitionPairs, 4 FixpointIterations, 11 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 54 TotalNumberOfCompositions, 7520 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: 2.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 474 SDtfs, 189 SDslu, 211 SDs, 0 SdLazy, 96 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred 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, 9 MinimizatonAttempts, 200 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 2461 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...