/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/15_dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 12:11:02,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 12:11:02,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 12:11:03,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 12:11:03,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 12:11:03,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 12:11:03,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 12:11:03,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 12:11:03,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 12:11:03,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 12:11:03,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 12:11:03,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 12:11:03,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 12:11:03,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 12:11:03,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 12:11:03,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 12:11:03,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 12:11:03,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 12:11:03,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 12:11:03,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 12:11:03,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 12:11:03,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 12:11:03,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 12:11:03,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 12:11:03,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 12:11:03,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 12:11:03,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 12:11:03,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 12:11:03,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 12:11:03,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 12:11:03,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 12:11:03,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 12:11:03,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 12:11:03,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 12:11:03,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 12:11:03,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 12:11:03,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 12:11:03,114 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 12:11:03,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 12:11:03,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 12:11:03,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 12:11:03,117 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 12:11:03,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 12:11:03,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 12:11:03,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 12:11:03,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 12:11:03,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 12:11:03,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 12:11:03,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 12:11:03,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 12:11:03,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 12:11:03,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 12:11:03,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 12:11:03,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 12:11:03,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 12:11:03,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 12:11:03,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 12:11:03,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 12:11:03,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 12:11:03,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 12:11:03,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 12:11:03,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 12:11:03,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 12:11:03,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 12:11:03,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 12:11:03,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 12:11:03,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 12:11:03,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 12:11:03,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 12:11:03,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 12:11:03,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 12:11:03,600 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 12:11:03,601 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-09-11 12:11:03,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ce90607e/bb7022b4bb574f97a893dd5176d266d2/FLAG20ff91ce2 [2020-09-11 12:11:04,308 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 12:11:04,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-09-11 12:11:04,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ce90607e/bb7022b4bb574f97a893dd5176d266d2/FLAG20ff91ce2 [2020-09-11 12:11:04,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ce90607e/bb7022b4bb574f97a893dd5176d266d2 [2020-09-11 12:11:04,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 12:11:04,582 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 12:11:04,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 12:11:04,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 12:11:04,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 12:11:04,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 12:11:04" (1/1) ... [2020-09-11 12:11:04,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d3d19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:04, skipping insertion in model container [2020-09-11 12:11:04,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 12:11:04" (1/1) ... [2020-09-11 12:11:04,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 12:11:04,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 12:11:05,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 12:11:05,158 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 12:11:05,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 12:11:05,346 INFO L208 MainTranslator]: Completed translation [2020-09-11 12:11:05,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:05 WrapperNode [2020-09-11 12:11:05,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 12:11:05,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 12:11:05,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 12:11:05,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 12:11:05,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:05" (1/1) ... [2020-09-11 12:11:05,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:05" (1/1) ... [2020-09-11 12:11:05,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 12:11:05,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 12:11:05,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 12:11:05,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 12:11:05,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:05" (1/1) ... [2020-09-11 12:11:05,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:05" (1/1) ... [2020-09-11 12:11:05,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:05" (1/1) ... [2020-09-11 12:11:05,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:05" (1/1) ... [2020-09-11 12:11:05,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:05" (1/1) ... [2020-09-11 12:11:05,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:05" (1/1) ... [2020-09-11 12:11:05,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:05" (1/1) ... [2020-09-11 12:11:05,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 12:11:05,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 12:11:05,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 12:11:05,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 12:11:05,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 12:11:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-11 12:11:05,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-11 12:11:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 12:11:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 12:11:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 12:11:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 12:11:05,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 12:11:05,555 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 12:11:05,934 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 12:11:05,935 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-11 12:11:05,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 12:11:05 BoogieIcfgContainer [2020-09-11 12:11:05,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 12:11:05,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 12:11:05,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 12:11:05,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 12:11:05,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 12:11:04" (1/3) ... [2020-09-11 12:11:05,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab052d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 12:11:05, skipping insertion in model container [2020-09-11 12:11:05,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:11:05" (2/3) ... [2020-09-11 12:11:05,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab052d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 12:11:05, skipping insertion in model container [2020-09-11 12:11:05,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 12:11:05" (3/3) ... [2020-09-11 12:11:05,957 INFO L109 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2020-09-11 12:11:05,970 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 12:11:05,970 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 12:11:05,982 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-11 12:11:05,983 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 12:11:06,007 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:06,007 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:06,007 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:06,008 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:06,009 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:06,009 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:06,016 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:06,017 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:06,017 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:06,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:06,042 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 12:11:06,066 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 12:11:06,066 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 12:11:06,066 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 12:11:06,067 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 12:11:06,067 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 12:11:06,067 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 12:11:06,067 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 12:11:06,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 12:11:06,084 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 65 transitions, 135 flow [2020-09-11 12:11:06,086 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions, 135 flow [2020-09-11 12:11:06,127 INFO L129 PetriNetUnfolder]: 12/64 cut-off events. [2020-09-11 12:11:06,128 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 12:11:06,135 INFO L80 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2020-09-11 12:11:06,138 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions, 135 flow [2020-09-11 12:11:06,159 INFO L129 PetriNetUnfolder]: 12/64 cut-off events. [2020-09-11 12:11:06,160 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 12:11:06,161 INFO L80 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2020-09-11 12:11:06,163 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1302 [2020-09-11 12:11:06,164 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 12:11:07,270 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2818 [2020-09-11 12:11:07,271 INFO L214 etLargeBlockEncoding]: Total number of compositions: 41 [2020-09-11 12:11:07,277 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 33 transitions, 71 flow [2020-09-11 12:11:07,304 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 123 states. [2020-09-11 12:11:07,306 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-11 12:11:07,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-09-11 12:11:07,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:07,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-09-11 12:11:07,321 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:07,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:07,330 INFO L82 PathProgramCache]: Analyzing trace with hash 265919371, now seen corresponding path program 1 times [2020-09-11 12:11:07,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:07,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169422139] [2020-09-11 12:11:07,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:07,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169422139] [2020-09-11 12:11:07,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:07,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 12:11:07,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344960887] [2020-09-11 12:11:07,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 12:11:07,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:07,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 12:11:07,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 12:11:07,587 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 2 states. [2020-09-11 12:11:07,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:07,610 INFO L93 Difference]: Finished difference Result 123 states and 288 transitions. [2020-09-11 12:11:07,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 12:11:07,612 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-09-11 12:11:07,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:07,629 INFO L225 Difference]: With dead ends: 123 [2020-09-11 12:11:07,630 INFO L226 Difference]: Without dead ends: 114 [2020-09-11 12:11:07,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 12:11:07,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-11 12:11:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-09-11 12:11:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-11 12:11:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 270 transitions. [2020-09-11 12:11:07,693 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 270 transitions. Word has length 5 [2020-09-11 12:11:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:07,695 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 270 transitions. [2020-09-11 12:11:07,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 12:11:07,695 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 270 transitions. [2020-09-11 12:11:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-11 12:11:07,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:07,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-11 12:11:07,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 12:11:07,697 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:07,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:07,697 INFO L82 PathProgramCache]: Analyzing trace with hash -346472462, now seen corresponding path program 1 times [2020-09-11 12:11:07,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:07,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211450146] [2020-09-11 12:11:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:07,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211450146] [2020-09-11 12:11:07,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:07,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 12:11:07,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335094636] [2020-09-11 12:11:07,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 12:11:07,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:07,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 12:11:07,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:07,774 INFO L87 Difference]: Start difference. First operand 114 states and 270 transitions. Second operand 3 states. [2020-09-11 12:11:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:07,806 INFO L93 Difference]: Finished difference Result 119 states and 267 transitions. [2020-09-11 12:11:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 12:11:07,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-09-11 12:11:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:07,809 INFO L225 Difference]: With dead ends: 119 [2020-09-11 12:11:07,809 INFO L226 Difference]: Without dead ends: 98 [2020-09-11 12:11:07,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:07,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-11 12:11:07,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2020-09-11 12:11:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-11 12:11:07,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 213 transitions. [2020-09-11 12:11:07,824 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 213 transitions. Word has length 6 [2020-09-11 12:11:07,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:07,824 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 213 transitions. [2020-09-11 12:11:07,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 12:11:07,824 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 213 transitions. [2020-09-11 12:11:07,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-11 12:11:07,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:07,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-11 12:11:07,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 12:11:07,826 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:07,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:07,826 INFO L82 PathProgramCache]: Analyzing trace with hash -347203723, now seen corresponding path program 1 times [2020-09-11 12:11:07,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:07,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010805567] [2020-09-11 12:11:07,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:07,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010805567] [2020-09-11 12:11:07,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:07,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 12:11:07,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288444424] [2020-09-11 12:11:07,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 12:11:07,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:07,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 12:11:07,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:07,901 INFO L87 Difference]: Start difference. First operand 92 states and 213 transitions. Second operand 3 states. [2020-09-11 12:11:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:07,942 INFO L93 Difference]: Finished difference Result 87 states and 195 transitions. [2020-09-11 12:11:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 12:11:07,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-09-11 12:11:07,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:07,944 INFO L225 Difference]: With dead ends: 87 [2020-09-11 12:11:07,944 INFO L226 Difference]: Without dead ends: 66 [2020-09-11 12:11:07,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-11 12:11:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-11 12:11:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-11 12:11:07,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 148 transitions. [2020-09-11 12:11:07,953 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 148 transitions. Word has length 6 [2020-09-11 12:11:07,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:07,953 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 148 transitions. [2020-09-11 12:11:07,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 12:11:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 148 transitions. [2020-09-11 12:11:07,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 12:11:07,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:07,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:07,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 12:11:07,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:07,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:07,956 INFO L82 PathProgramCache]: Analyzing trace with hash 390027313, now seen corresponding path program 1 times [2020-09-11 12:11:07,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:07,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797338077] [2020-09-11 12:11:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:08,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797338077] [2020-09-11 12:11:08,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:08,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:08,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315764108] [2020-09-11 12:11:08,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 12:11:08,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:08,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 12:11:08,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:08,006 INFO L87 Difference]: Start difference. First operand 66 states and 148 transitions. Second operand 3 states. [2020-09-11 12:11:08,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:08,024 INFO L93 Difference]: Finished difference Result 66 states and 143 transitions. [2020-09-11 12:11:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 12:11:08,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 12:11:08,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:08,038 INFO L225 Difference]: With dead ends: 66 [2020-09-11 12:11:08,038 INFO L226 Difference]: Without dead ends: 56 [2020-09-11 12:11:08,039 INFO L675 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 [2020-09-11 12:11:08,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-11 12:11:08,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-11 12:11:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-11 12:11:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 119 transitions. [2020-09-11 12:11:08,046 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 119 transitions. Word has length 9 [2020-09-11 12:11:08,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:08,046 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 119 transitions. [2020-09-11 12:11:08,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 12:11:08,046 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 119 transitions. [2020-09-11 12:11:08,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 12:11:08,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:08,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:08,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 12:11:08,048 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:08,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:08,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1213925997, now seen corresponding path program 2 times [2020-09-11 12:11:08,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:08,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525459177] [2020-09-11 12:11:08,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:08,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525459177] [2020-09-11 12:11:08,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:08,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:08,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362664541] [2020-09-11 12:11:08,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 12:11:08,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:08,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 12:11:08,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 12:11:08,106 INFO L87 Difference]: Start difference. First operand 56 states and 119 transitions. Second operand 3 states. [2020-09-11 12:11:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:08,119 INFO L93 Difference]: Finished difference Result 37 states and 93 transitions. [2020-09-11 12:11:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 12:11:08,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 12:11:08,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:08,120 INFO L225 Difference]: With dead ends: 37 [2020-09-11 12:11:08,120 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 12:11:08,121 INFO L675 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 [2020-09-11 12:11:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 12:11:08,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 12:11:08,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 12:11:08,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 12:11:08,122 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-09-11 12:11:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:08,122 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 12:11:08,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 12:11:08,122 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 12:11:08,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 12:11:08,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 12:11:08,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 12:11:08 BasicIcfg [2020-09-11 12:11:08,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 12:11:08,131 INFO L168 Benchmark]: Toolchain (without parser) took 3552.06 ms. Allocated memory was 109.1 MB in the beginning and 208.1 MB in the end (delta: 99.1 MB). Free memory was 73.4 MB in the beginning and 177.1 MB in the end (delta: -103.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 12:11:08,132 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory was 92.4 MB in the beginning and 92.3 MB in the end (delta: 104.9 kB). Peak memory consumption was 104.9 kB. Max. memory is 7.1 GB. [2020-09-11 12:11:08,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.09 ms. Allocated memory was 109.1 MB in the beginning and 167.8 MB in the end (delta: 58.7 MB). Free memory was 72.8 MB in the beginning and 135.8 MB in the end (delta: -63.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-09-11 12:11:08,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.89 ms. Allocated memory is still 167.8 MB. Free memory was 135.3 MB in the beginning and 133.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-11 12:11:08,135 INFO L168 Benchmark]: Boogie Preprocessor took 32.12 ms. Allocated memory is still 167.8 MB. Free memory was 133.4 MB in the beginning and 131.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-09-11 12:11:08,136 INFO L168 Benchmark]: RCFGBuilder took 479.44 ms. Allocated memory is still 167.8 MB. Free memory was 131.9 MB in the beginning and 112.5 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-09-11 12:11:08,137 INFO L168 Benchmark]: TraceAbstraction took 2181.00 ms. Allocated memory was 167.8 MB in the beginning and 208.1 MB in the end (delta: 40.4 MB). Free memory was 112.1 MB in the beginning and 177.1 MB in the end (delta: -65.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 12:11:08,141 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory was 92.4 MB in the beginning and 92.3 MB in the end (delta: 104.9 kB). Peak memory consumption was 104.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 763.09 ms. Allocated memory was 109.1 MB in the beginning and 167.8 MB in the end (delta: 58.7 MB). Free memory was 72.8 MB in the beginning and 135.8 MB in the end (delta: -63.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 84.89 ms. Allocated memory is still 167.8 MB. Free memory was 135.3 MB in the beginning and 133.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.12 ms. Allocated memory is still 167.8 MB. Free memory was 133.4 MB in the beginning and 131.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.44 ms. Allocated memory is still 167.8 MB. Free memory was 131.9 MB in the beginning and 112.5 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2181.00 ms. Allocated memory was 167.8 MB in the beginning and 208.1 MB in the end (delta: 40.4 MB). Free memory was 112.1 MB in the beginning and 177.1 MB in the end (delta: -65.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 57 ProgramPointsBefore, 27 ProgramPointsAfterwards, 65 TransitionsBefore, 33 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 6 FixpointIterations, 10 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 669 VarBasedMoverChecksPositive, 56 VarBasedMoverChecksNegative, 35 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2818 CheckedPairsTotal, 41 TotalNumberOfCompositions - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 701]: 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, 54 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 151 SDtfs, 64 SDslu, 48 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...