/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:51:26,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:51:26,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:51:26,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:51:26,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:51:26,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:51:26,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:51:26,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:51:27,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:51:27,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:51:27,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:51:27,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:51:27,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:51:27,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:51:27,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:51:27,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:51:27,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:51:27,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:51:27,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:51:27,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:51:27,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:51:27,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:51:27,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:51:27,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:51:27,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:51:27,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:51:27,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:51:27,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:51:27,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:51:27,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:51:27,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:51:27,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:51:27,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:51:27,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:51:27,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:51:27,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:51:27,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:51:27,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:51:27,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:51:27,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:51:27,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:51:27,035 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 [2020-04-17 18:51:27,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:51:27,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:51:27,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:51:27,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:51:27,070 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:51:27,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:51:27,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:51:27,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:51:27,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:51:27,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:51:27,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:51:27,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:51:27,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:51:27,073 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:51:27,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:51:27,073 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:51:27,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:51:27,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:51:27,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:51:27,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:51:27,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:51:27,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:51:27,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:51:27,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:51:27,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:51:27,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:51:27,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:51:27,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:51:27,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:51:27,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:51:27,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:51:27,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:51:27,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:51:27,411 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:51:27,412 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-04-17 18:51:27,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e520df35/6249517bb4f74209aaf56e074f748732/FLAG53525027e [2020-04-17 18:51:28,024 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:51:28,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-04-17 18:51:28,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e520df35/6249517bb4f74209aaf56e074f748732/FLAG53525027e [2020-04-17 18:51:28,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e520df35/6249517bb4f74209aaf56e074f748732 [2020-04-17 18:51:28,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:51:28,364 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:51:28,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:51:28,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:51:28,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:51:28,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:51:28" (1/1) ... [2020-04-17 18:51:28,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f1b029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:51:28, skipping insertion in model container [2020-04-17 18:51:28,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:51:28" (1/1) ... [2020-04-17 18:51:28,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:51:28,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:51:28,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:51:28,921 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:51:28,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:51:29,067 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:51:29,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:51:29 WrapperNode [2020-04-17 18:51:29,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:51:29,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:51:29,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:51:29,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:51:29,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:51:29" (1/1) ... [2020-04-17 18:51:29,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:51:29" (1/1) ... [2020-04-17 18:51:29,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:51:29,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:51:29,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:51:29,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:51:29,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:51:29" (1/1) ... [2020-04-17 18:51:29,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:51:29" (1/1) ... [2020-04-17 18:51:29,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:51:29" (1/1) ... [2020-04-17 18:51:29,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:51:29" (1/1) ... [2020-04-17 18:51:29,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:51:29" (1/1) ... [2020-04-17 18:51:29,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:51:29" (1/1) ... [2020-04-17 18:51:29,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:51:29" (1/1) ... [2020-04-17 18:51:29,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:51:29,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:51:29,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:51:29,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:51:29,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:51:29" (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 [2020-04-17 18:51:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-17 18:51:29,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-17 18:51:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:51:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:51:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:51:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:51:29,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:51:29,247 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 18:51:29,664 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:51:29,664 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-04-17 18:51:29,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:51:29 BoogieIcfgContainer [2020-04-17 18:51:29,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:51:29,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:51:29,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:51:29,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:51:29,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:51:28" (1/3) ... [2020-04-17 18:51:29,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389598cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:51:29, skipping insertion in model container [2020-04-17 18:51:29,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:51:29" (2/3) ... [2020-04-17 18:51:29,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389598cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:51:29, skipping insertion in model container [2020-04-17 18:51:29,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:51:29" (3/3) ... [2020-04-17 18:51:29,677 INFO L109 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-04-17 18:51:29,688 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:51:29,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:51:29,696 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-17 18:51:29,697 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:51:29,722 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:51:29,722 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:51:29,722 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:51:29,723 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:51:29,724 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:51:29,724 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:51:29,728 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:51:29,729 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:51:29,729 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:51:29,729 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:51:29,748 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 18:51:29,765 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:51:29,765 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:51:29,765 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:51:29,765 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:51:29,766 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:51:29,766 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:51:29,766 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:51:29,766 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:51:29,783 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 92 transitions, 189 flow [2020-04-17 18:51:29,786 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-04-17 18:51:29,837 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-04-17 18:51:29,837 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:51:29,844 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. [2020-04-17 18:51:29,848 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-04-17 18:51:29,872 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-04-17 18:51:29,873 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:51:29,874 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. [2020-04-17 18:51:29,878 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2992 [2020-04-17 18:51:29,879 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:51:31,281 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7520 [2020-04-17 18:51:31,282 INFO L214 etLargeBlockEncoding]: Total number of compositions: 46 [2020-04-17 18:51:31,285 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 51 transitions, 107 flow [2020-04-17 18:51:31,309 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 291 states. [2020-04-17 18:51:31,311 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2020-04-17 18:51:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-17 18:51:31,318 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:51:31,319 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-17 18:51:31,320 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:51:31,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:51:31,327 INFO L82 PathProgramCache]: Analyzing trace with hash 12384667, now seen corresponding path program 1 times [2020-04-17 18:51:31,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:51:31,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943047022] [2020-04-17 18:51:31,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:51:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:51:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:51:31,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943047022] [2020-04-17 18:51:31,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:51:31,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:51:31,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813479650] [2020-04-17 18:51:31,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 18:51:31,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:51:31,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 18:51:31,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 18:51:31,525 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 2 states. [2020-04-17 18:51:31,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:51:31,560 INFO L93 Difference]: Finished difference Result 291 states and 750 transitions. [2020-04-17 18:51:31,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 18:51:31,562 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-04-17 18:51:31,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:51:31,581 INFO L225 Difference]: With dead ends: 291 [2020-04-17 18:51:31,581 INFO L226 Difference]: Without dead ends: 282 [2020-04-17 18:51:31,583 INFO L678 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 [2020-04-17 18:51:31,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-04-17 18:51:31,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-04-17 18:51:31,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-04-17 18:51:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 732 transitions. [2020-04-17 18:51:31,693 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 732 transitions. Word has length 4 [2020-04-17 18:51:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:51:31,694 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 732 transitions. [2020-04-17 18:51:31,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 18:51:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 732 transitions. [2020-04-17 18:51:31,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:51:31,695 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:51:31,696 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:51:31,697 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:51:31,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:51:31,697 INFO L82 PathProgramCache]: Analyzing trace with hash 27980612, now seen corresponding path program 1 times [2020-04-17 18:51:31,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:51:31,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465517965] [2020-04-17 18:51:31,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:51:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:51:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:51:31,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465517965] [2020-04-17 18:51:31,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:51:31,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:51:31,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817175768] [2020-04-17 18:51:31,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:51:31,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:51:31,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:51:31,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:51:31,836 INFO L87 Difference]: Start difference. First operand 282 states and 732 transitions. Second operand 3 states. [2020-04-17 18:51:31,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:51:31,889 INFO L93 Difference]: Finished difference Result 281 states and 714 transitions. [2020-04-17 18:51:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:51:31,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 18:51:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:51:31,896 INFO L225 Difference]: With dead ends: 281 [2020-04-17 18:51:31,896 INFO L226 Difference]: Without dead ends: 242 [2020-04-17 18:51:31,899 INFO L678 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 [2020-04-17 18:51:31,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-04-17 18:51:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 236. [2020-04-17 18:51:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-04-17 18:51:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 615 transitions. [2020-04-17 18:51:31,946 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 615 transitions. Word has length 9 [2020-04-17 18:51:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:51:31,946 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 615 transitions. [2020-04-17 18:51:31,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:51:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 615 transitions. [2020-04-17 18:51:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:51:31,947 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:51:31,948 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:51:31,948 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:51:31,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:51:31,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1037274544, now seen corresponding path program 1 times [2020-04-17 18:51:31,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:51:31,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260269283] [2020-04-17 18:51:31,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:51:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:51:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:51:32,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260269283] [2020-04-17 18:51:32,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:51:32,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:51:32,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134509083] [2020-04-17 18:51:32,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:51:32,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:51:32,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:51:32,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:51:32,024 INFO L87 Difference]: Start difference. First operand 236 states and 615 transitions. Second operand 3 states. [2020-04-17 18:51:32,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:51:32,046 INFO L93 Difference]: Finished difference Result 225 states and 582 transitions. [2020-04-17 18:51:32,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:51:32,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 18:51:32,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:51:32,049 INFO L225 Difference]: With dead ends: 225 [2020-04-17 18:51:32,049 INFO L226 Difference]: Without dead ends: 186 [2020-04-17 18:51:32,050 INFO L678 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 [2020-04-17 18:51:32,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-04-17 18:51:32,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-04-17 18:51:32,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-04-17 18:51:32,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 490 transitions. [2020-04-17 18:51:32,061 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 490 transitions. Word has length 9 [2020-04-17 18:51:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:51:32,062 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 490 transitions. [2020-04-17 18:51:32,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:51:32,062 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 490 transitions. [2020-04-17 18:51:32,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 18:51:32,064 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:51:32,064 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:51:32,065 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:51:32,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:51:32,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1540220195, now seen corresponding path program 1 times [2020-04-17 18:51:32,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:51:32,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245646442] [2020-04-17 18:51:32,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:51:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:51:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:51:32,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245646442] [2020-04-17 18:51:32,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:51:32,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:51:32,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035955413] [2020-04-17 18:51:32,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:51:32,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:51:32,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:51:32,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:51:32,120 INFO L87 Difference]: Start difference. First operand 186 states and 490 transitions. Second operand 3 states. [2020-04-17 18:51:32,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:51:32,144 INFO L93 Difference]: Finished difference Result 308 states and 768 transitions. [2020-04-17 18:51:32,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:51:32,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-04-17 18:51:32,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:51:32,147 INFO L225 Difference]: With dead ends: 308 [2020-04-17 18:51:32,147 INFO L226 Difference]: Without dead ends: 306 [2020-04-17 18:51:32,148 INFO L678 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 [2020-04-17 18:51:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-04-17 18:51:32,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 229. [2020-04-17 18:51:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-04-17 18:51:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 602 transitions. [2020-04-17 18:51:32,163 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 602 transitions. Word has length 15 [2020-04-17 18:51:32,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:51:32,163 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 602 transitions. [2020-04-17 18:51:32,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:51:32,164 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 602 transitions. [2020-04-17 18:51:32,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 18:51:32,166 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:51:32,166 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:51:32,167 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:51:32,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:51:32,167 INFO L82 PathProgramCache]: Analyzing trace with hash 988190489, now seen corresponding path program 1 times [2020-04-17 18:51:32,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:51:32,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792121597] [2020-04-17 18:51:32,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:51:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:51:32,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:51:32,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792121597] [2020-04-17 18:51:32,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:51:32,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:51:32,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267967648] [2020-04-17 18:51:32,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:51:32,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:51:32,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:51:32,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:51:32,209 INFO L87 Difference]: Start difference. First operand 229 states and 602 transitions. Second operand 3 states. [2020-04-17 18:51:32,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:51:32,285 INFO L93 Difference]: Finished difference Result 312 states and 770 transitions. [2020-04-17 18:51:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:51:32,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-04-17 18:51:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:51:32,293 INFO L225 Difference]: With dead ends: 312 [2020-04-17 18:51:32,293 INFO L226 Difference]: Without dead ends: 237 [2020-04-17 18:51:32,295 INFO L678 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 [2020-04-17 18:51:32,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-04-17 18:51:32,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 216. [2020-04-17 18:51:32,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-04-17 18:51:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 534 transitions. [2020-04-17 18:51:32,315 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 534 transitions. Word has length 15 [2020-04-17 18:51:32,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:51:32,315 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 534 transitions. [2020-04-17 18:51:32,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:51:32,315 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 534 transitions. [2020-04-17 18:51:32,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 18:51:32,321 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:51:32,321 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:51:32,323 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:51:32,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:51:32,323 INFO L82 PathProgramCache]: Analyzing trace with hash -795157281, now seen corresponding path program 2 times [2020-04-17 18:51:32,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:51:32,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020031191] [2020-04-17 18:51:32,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:51:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:51:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:51:32,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020031191] [2020-04-17 18:51:32,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:51:32,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:51:32,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539139565] [2020-04-17 18:51:32,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:51:32,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:51:32,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:51:32,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:51:32,379 INFO L87 Difference]: Start difference. First operand 216 states and 534 transitions. Second operand 3 states. [2020-04-17 18:51:32,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:51:32,406 INFO L93 Difference]: Finished difference Result 293 states and 674 transitions. [2020-04-17 18:51:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:51:32,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-04-17 18:51:32,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:51:32,413 INFO L225 Difference]: With dead ends: 293 [2020-04-17 18:51:32,413 INFO L226 Difference]: Without dead ends: 293 [2020-04-17 18:51:32,414 INFO L678 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 [2020-04-17 18:51:32,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-04-17 18:51:32,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 216. [2020-04-17 18:51:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-04-17 18:51:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 522 transitions. [2020-04-17 18:51:32,426 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 522 transitions. Word has length 15 [2020-04-17 18:51:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:51:32,427 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 522 transitions. [2020-04-17 18:51:32,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:51:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 522 transitions. [2020-04-17 18:51:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 18:51:32,429 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:51:32,429 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:51:32,429 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:51:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:51:32,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1884700835, now seen corresponding path program 2 times [2020-04-17 18:51:32,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:51:32,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743776358] [2020-04-17 18:51:32,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:51:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:51:32,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:51:32,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743776358] [2020-04-17 18:51:32,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:51:32,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:51:32,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629555565] [2020-04-17 18:51:32,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:51:32,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:51:32,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:51:32,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:51:32,497 INFO L87 Difference]: Start difference. First operand 216 states and 522 transitions. Second operand 3 states. [2020-04-17 18:51:32,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:51:32,537 INFO L93 Difference]: Finished difference Result 181 states and 375 transitions. [2020-04-17 18:51:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:51:32,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-04-17 18:51:32,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:51:32,539 INFO L225 Difference]: With dead ends: 181 [2020-04-17 18:51:32,539 INFO L226 Difference]: Without dead ends: 115 [2020-04-17 18:51:32,539 INFO L678 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 [2020-04-17 18:51:32,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-04-17 18:51:32,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-04-17 18:51:32,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-17 18:51:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 190 transitions. [2020-04-17 18:51:32,544 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 190 transitions. Word has length 15 [2020-04-17 18:51:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:51:32,544 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 190 transitions. [2020-04-17 18:51:32,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:51:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 190 transitions. [2020-04-17 18:51:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:51:32,545 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:51:32,545 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:51:32,546 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:51:32,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:51:32,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1567500834, now seen corresponding path program 1 times [2020-04-17 18:51:32,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:51:32,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058882052] [2020-04-17 18:51:32,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:51:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:51:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:51:32,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058882052] [2020-04-17 18:51:32,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:51:32,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:51:32,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404603822] [2020-04-17 18:51:32,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:51:32,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:51:32,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:51:32,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:51:32,593 INFO L87 Difference]: Start difference. First operand 96 states and 190 transitions. Second operand 3 states. [2020-04-17 18:51:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:51:32,609 INFO L93 Difference]: Finished difference Result 98 states and 191 transitions. [2020-04-17 18:51:32,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:51:32,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 18:51:32,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:51:32,610 INFO L225 Difference]: With dead ends: 98 [2020-04-17 18:51:32,611 INFO L226 Difference]: Without dead ends: 81 [2020-04-17 18:51:32,611 INFO L678 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 [2020-04-17 18:51:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-04-17 18:51:32,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-04-17 18:51:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-04-17 18:51:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 159 transitions. [2020-04-17 18:51:32,614 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 159 transitions. Word has length 17 [2020-04-17 18:51:32,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:51:32,615 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 159 transitions. [2020-04-17 18:51:32,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:51:32,615 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 159 transitions. [2020-04-17 18:51:32,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:51:32,615 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:51:32,616 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:51:32,616 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:51:32,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:51:32,616 INFO L82 PathProgramCache]: Analyzing trace with hash 322655978, now seen corresponding path program 1 times [2020-04-17 18:51:32,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:51:32,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124466675] [2020-04-17 18:51:32,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:51:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:51:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:51:32,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124466675] [2020-04-17 18:51:32,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:51:32,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:51:32,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874520875] [2020-04-17 18:51:32,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:51:32,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:51:32,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:51:32,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:51:32,662 INFO L87 Difference]: Start difference. First operand 81 states and 159 transitions. Second operand 3 states. [2020-04-17 18:51:32,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:51:32,672 INFO L93 Difference]: Finished difference Result 56 states and 119 transitions. [2020-04-17 18:51:32,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:51:32,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 18:51:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:51:32,675 INFO L225 Difference]: With dead ends: 56 [2020-04-17 18:51:32,675 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 18:51:32,676 INFO L678 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 [2020-04-17 18:51:32,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 18:51:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 18:51:32,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 18:51:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 18:51:32,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 18:51:32,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:51:32,677 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 18:51:32,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:51:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 18:51:32,678 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 18:51:32,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 06:51:32 BasicIcfg [2020-04-17 18:51:32,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 18:51:32,693 INFO L168 Benchmark]: Toolchain (without parser) took 4343.37 ms. Allocated memory was 142.1 MB in the beginning and 255.9 MB in the end (delta: 113.8 MB). Free memory was 98.4 MB in the beginning and 137.6 MB in the end (delta: -39.2 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. [2020-04-17 18:51:32,694 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 142.1 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 18:51:32,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.60 ms. Allocated memory was 142.1 MB in the beginning and 199.2 MB in the end (delta: 57.1 MB). Free memory was 96.4 MB in the beginning and 156.6 MB in the end (delta: -60.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-04-17 18:51:32,696 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.05 ms. Allocated memory is still 199.2 MB. Free memory was 156.6 MB in the beginning and 154.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-17 18:51:32,697 INFO L168 Benchmark]: Boogie Preprocessor took 30.67 ms. Allocated memory is still 199.2 MB. Free memory was 154.4 MB in the beginning and 153.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 18:51:32,697 INFO L168 Benchmark]: RCFGBuilder took 505.48 ms. Allocated memory is still 199.2 MB. Free memory was 153.0 MB in the beginning and 130.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-04-17 18:51:32,698 INFO L168 Benchmark]: TraceAbstraction took 3020.10 ms. Allocated memory was 199.2 MB in the beginning and 255.9 MB in the end (delta: 56.6 MB). Free memory was 129.5 MB in the beginning and 137.6 MB in the end (delta: -8.0 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. [2020-04-17 18:51:32,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 142.1 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.60 ms. Allocated memory was 142.1 MB in the beginning and 199.2 MB in the end (delta: 57.1 MB). Free memory was 96.4 MB in the beginning and 156.6 MB in the end (delta: -60.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.05 ms. Allocated memory is still 199.2 MB. Free memory was 156.6 MB in the beginning and 154.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.67 ms. Allocated memory is still 199.2 MB. Free memory was 154.4 MB in the beginning and 153.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 505.48 ms. Allocated memory is still 199.2 MB. Free memory was 153.0 MB in the beginning and 130.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3020.10 ms. Allocated memory was 199.2 MB in the beginning and 255.9 MB in the end (delta: 56.6 MB). Free memory was 129.5 MB in the beginning and 137.6 MB in the end (delta: -8.0 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 72 ProgramPointsBefore, 39 ProgramPointsAfterwards, 92 TransitionsBefore, 51 TransitionsAfterwards, 2992 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 1205 VarBasedMoverChecksPositive, 82 VarBasedMoverChecksNegative, 50 SemBasedMoverChecksPositive, 61 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 7520 CheckedPairsTotal, 46 TotalNumberOfCompositions - 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: 2.9s, 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 200 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s 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...