/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/16_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 20:48:07,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 20:48:07,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 20:48:07,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 20:48:07,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 20:48:07,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 20:48:07,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 20:48:07,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 20:48:07,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 20:48:07,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 20:48:07,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 20:48:07,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 20:48:07,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 20:48:07,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 20:48:07,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 20:48:07,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 20:48:07,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 20:48:07,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 20:48:07,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 20:48:07,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 20:48:07,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 20:48:07,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 20:48:07,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 20:48:07,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 20:48:07,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 20:48:07,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 20:48:07,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 20:48:07,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 20:48:07,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 20:48:07,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 20:48:07,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 20:48:07,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 20:48:07,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 20:48:07,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 20:48:07,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 20:48:07,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 20:48:07,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 20:48:07,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 20:48:07,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 20:48:07,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 20:48:07,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 20:48:07,655 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 20:48:07,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 20:48:07,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 20:48:07,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 20:48:07,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 20:48:07,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 20:48:07,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 20:48:07,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 20:48:07,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 20:48:07,658 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 20:48:07,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 20:48:07,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 20:48:07,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 20:48:07,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 20:48:07,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 20:48:07,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 20:48:07,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 20:48:07,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 20:48:07,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 20:48:07,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 20:48:07,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 20:48:07,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 20:48:07,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 20:48:07,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 20:48:07,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 20:48:07,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 20:48:07,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 20:48:07,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 20:48:07,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 20:48:07,987 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 20:48:07,987 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-10-15 20:48:08,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59cf07b7a/c1f80dc2fe2f4dac9cb1a20e71383a9e/FLAGa1f9e82bd [2020-10-15 20:48:08,570 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 20:48:08,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-10-15 20:48:08,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59cf07b7a/c1f80dc2fe2f4dac9cb1a20e71383a9e/FLAGa1f9e82bd [2020-10-15 20:48:08,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59cf07b7a/c1f80dc2fe2f4dac9cb1a20e71383a9e [2020-10-15 20:48:08,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 20:48:08,892 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 20:48:08,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 20:48:08,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 20:48:08,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 20:48:08,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:48:08" (1/1) ... [2020-10-15 20:48:08,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635b0c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:08, skipping insertion in model container [2020-10-15 20:48:08,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:48:08" (1/1) ... [2020-10-15 20:48:08,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 20:48:08,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 20:48:09,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:48:09,487 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 20:48:09,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:48:09,612 INFO L208 MainTranslator]: Completed translation [2020-10-15 20:48:09,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:09 WrapperNode [2020-10-15 20:48:09,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 20:48:09,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 20:48:09,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 20:48:09,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 20:48:09,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:09" (1/1) ... [2020-10-15 20:48:09,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:09" (1/1) ... [2020-10-15 20:48:09,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 20:48:09,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 20:48:09,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 20:48:09,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 20:48:09,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:09" (1/1) ... [2020-10-15 20:48:09,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:09" (1/1) ... [2020-10-15 20:48:09,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:09" (1/1) ... [2020-10-15 20:48:09,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:09" (1/1) ... [2020-10-15 20:48:09,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:09" (1/1) ... [2020-10-15 20:48:09,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:09" (1/1) ... [2020-10-15 20:48:09,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:09" (1/1) ... [2020-10-15 20:48:09,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 20:48:09,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 20:48:09,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 20:48:09,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 20:48:09,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 20:48:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-15 20:48:09,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-15 20:48:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 20:48:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 20:48:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 20:48:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 20:48:09,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 20:48:09,765 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 20:48:10,108 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 20:48:10,108 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 20:48:10,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:48:10 BoogieIcfgContainer [2020-10-15 20:48:10,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 20:48:10,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 20:48:10,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 20:48:10,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 20:48:10,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:48:08" (1/3) ... [2020-10-15 20:48:10,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cfd2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:48:10, skipping insertion in model container [2020-10-15 20:48:10,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:48:09" (2/3) ... [2020-10-15 20:48:10,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cfd2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:48:10, skipping insertion in model container [2020-10-15 20:48:10,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:48:10" (3/3) ... [2020-10-15 20:48:10,118 INFO L111 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2020-10-15 20:48:10,129 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 20:48:10,130 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 20:48:10,137 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 20:48:10,138 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 20:48:10,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:10,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:10,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:10,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:10,161 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:10,161 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:10,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:10,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:10,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:10,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:48:10,183 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 20:48:10,203 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 20:48:10,203 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 20:48:10,204 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 20:48:10,204 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 20:48:10,204 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 20:48:10,204 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 20:48:10,204 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 20:48:10,204 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 20:48:10,215 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 20:48:10,218 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 51 transitions, 107 flow [2020-10-15 20:48:10,220 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 51 transitions, 107 flow [2020-10-15 20:48:10,221 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 107 flow [2020-10-15 20:48:10,255 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2020-10-15 20:48:10,255 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 20:48:10,260 INFO L80 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2020-10-15 20:48:10,262 INFO L117 LiptonReduction]: Number of co-enabled transitions 672 [2020-10-15 20:48:11,224 INFO L132 LiptonReduction]: Checked pairs total: 1287 [2020-10-15 20:48:11,225 INFO L134 LiptonReduction]: Total number of compositions: 37 [2020-10-15 20:48:11,231 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 22 transitions, 49 flow [2020-10-15 20:48:11,243 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 66 states. [2020-10-15 20:48:11,245 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-15 20:48:11,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-15 20:48:11,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:11,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-15 20:48:11,253 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:11,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1942834628, now seen corresponding path program 1 times [2020-10-15 20:48:11,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:11,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231239820] [2020-10-15 20:48:11,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:11,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:11,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231239820] [2020-10-15 20:48:11,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:11,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:48:11,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334612884] [2020-10-15 20:48:11,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 20:48:11,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:11,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 20:48:11,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 20:48:11,438 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2020-10-15 20:48:11,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:11,456 INFO L93 Difference]: Finished difference Result 66 states and 130 transitions. [2020-10-15 20:48:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 20:48:11,458 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-15 20:48:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:11,470 INFO L225 Difference]: With dead ends: 66 [2020-10-15 20:48:11,470 INFO L226 Difference]: Without dead ends: 62 [2020-10-15 20:48:11,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 20:48:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-15 20:48:11,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-15 20:48:11,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-15 20:48:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 122 transitions. [2020-10-15 20:48:11,515 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 122 transitions. Word has length 6 [2020-10-15 20:48:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:11,516 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 122 transitions. [2020-10-15 20:48:11,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 20:48:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 122 transitions. [2020-10-15 20:48:11,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 20:48:11,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:11,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:11,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 20:48:11,518 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:11,518 INFO L82 PathProgramCache]: Analyzing trace with hash 98318518, now seen corresponding path program 1 times [2020-10-15 20:48:11,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:11,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008691773] [2020-10-15 20:48:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:11,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008691773] [2020-10-15 20:48:11,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:11,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:48:11,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082743488] [2020-10-15 20:48:11,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:48:11,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:11,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:48:11,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:11,621 INFO L87 Difference]: Start difference. First operand 62 states and 122 transitions. Second operand 3 states. [2020-10-15 20:48:11,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:11,645 INFO L93 Difference]: Finished difference Result 66 states and 121 transitions. [2020-10-15 20:48:11,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:48:11,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-15 20:48:11,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:11,647 INFO L225 Difference]: With dead ends: 66 [2020-10-15 20:48:11,648 INFO L226 Difference]: Without dead ends: 56 [2020-10-15 20:48:11,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:11,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-15 20:48:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-15 20:48:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-15 20:48:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-15 20:48:11,658 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 7 [2020-10-15 20:48:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:11,659 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-15 20:48:11,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:48:11,659 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-15 20:48:11,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 20:48:11,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:11,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:11,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 20:48:11,660 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:11,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:11,661 INFO L82 PathProgramCache]: Analyzing trace with hash 114699826, now seen corresponding path program 1 times [2020-10-15 20:48:11,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:11,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191078093] [2020-10-15 20:48:11,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:11,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191078093] [2020-10-15 20:48:11,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:11,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:48:11,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389950689] [2020-10-15 20:48:11,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:48:11,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:11,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:48:11,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:11,699 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 3 states. [2020-10-15 20:48:11,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:11,715 INFO L93 Difference]: Finished difference Result 48 states and 85 transitions. [2020-10-15 20:48:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:48:11,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-15 20:48:11,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:11,717 INFO L225 Difference]: With dead ends: 48 [2020-10-15 20:48:11,717 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 20:48:11,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:48:11,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 20:48:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-15 20:48:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-15 20:48:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 66 transitions. [2020-10-15 20:48:11,723 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 66 transitions. Word has length 7 [2020-10-15 20:48:11,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:11,724 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 66 transitions. [2020-10-15 20:48:11,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:48:11,724 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 66 transitions. [2020-10-15 20:48:11,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 20:48:11,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:11,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:11,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 20:48:11,725 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:11,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:11,726 INFO L82 PathProgramCache]: Analyzing trace with hash -480213144, now seen corresponding path program 1 times [2020-10-15 20:48:11,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:11,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798165784] [2020-10-15 20:48:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:11,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798165784] [2020-10-15 20:48:11,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:11,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 20:48:11,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703710886] [2020-10-15 20:48:11,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 20:48:11,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:11,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 20:48:11,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 20:48:11,788 INFO L87 Difference]: Start difference. First operand 38 states and 66 transitions. Second operand 4 states. [2020-10-15 20:48:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:11,815 INFO L93 Difference]: Finished difference Result 43 states and 75 transitions. [2020-10-15 20:48:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 20:48:11,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 20:48:11,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:11,817 INFO L225 Difference]: With dead ends: 43 [2020-10-15 20:48:11,817 INFO L226 Difference]: Without dead ends: 34 [2020-10-15 20:48:11,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 20:48:11,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-15 20:48:11,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-15 20:48:11,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-15 20:48:11,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 53 transitions. [2020-10-15 20:48:11,823 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 53 transitions. Word has length 11 [2020-10-15 20:48:11,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:11,823 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 53 transitions. [2020-10-15 20:48:11,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 20:48:11,824 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 53 transitions. [2020-10-15 20:48:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 20:48:11,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:48:11,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:48:11,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 20:48:11,825 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:48:11,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:48:11,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1657399704, now seen corresponding path program 2 times [2020-10-15 20:48:11,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:48:11,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62195242] [2020-10-15 20:48:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:48:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:48:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:48:11,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62195242] [2020-10-15 20:48:11,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:48:11,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 20:48:11,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995734070] [2020-10-15 20:48:11,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 20:48:11,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:48:11,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 20:48:11,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 20:48:11,869 INFO L87 Difference]: Start difference. First operand 34 states and 53 transitions. Second operand 4 states. [2020-10-15 20:48:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:48:11,880 INFO L93 Difference]: Finished difference Result 17 states and 29 transitions. [2020-10-15 20:48:11,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 20:48:11,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 20:48:11,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:48:11,882 INFO L225 Difference]: With dead ends: 17 [2020-10-15 20:48:11,882 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 20:48:11,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 20:48:11,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 20:48:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 20:48:11,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 20:48:11,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 20:48:11,883 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-15 20:48:11,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:48:11,884 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 20:48:11,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 20:48:11,884 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 20:48:11,884 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 20:48:11,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 20:48:11,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:48:11 BasicIcfg [2020-10-15 20:48:11,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 20:48:11,891 INFO L168 Benchmark]: Toolchain (without parser) took 2998.05 ms. Allocated memory was 253.2 MB in the beginning and 359.1 MB in the end (delta: 105.9 MB). Free memory was 208.6 MB in the beginning and 251.0 MB in the end (delta: -42.4 MB). Peak memory consumption was 63.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:11,891 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:48:11,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.74 ms. Allocated memory was 253.2 MB in the beginning and 319.8 MB in the end (delta: 66.6 MB). Free memory was 208.6 MB in the beginning and 275.6 MB in the end (delta: -67.0 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:11,893 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.35 ms. Allocated memory is still 319.8 MB. Free memory was 275.6 MB in the beginning and 273.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:11,894 INFO L168 Benchmark]: Boogie Preprocessor took 28.41 ms. Allocated memory is still 319.8 MB. Free memory is still 273.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:48:11,894 INFO L168 Benchmark]: RCFGBuilder took 419.81 ms. Allocated memory is still 319.8 MB. Free memory was 273.0 MB in the beginning and 253.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:11,895 INFO L168 Benchmark]: TraceAbstraction took 1777.07 ms. Allocated memory was 319.8 MB in the beginning and 359.1 MB in the end (delta: 39.3 MB). Free memory was 253.7 MB in the beginning and 251.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 42.1 MB. Max. memory is 14.2 GB. [2020-10-15 20:48:11,899 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 719.74 ms. Allocated memory was 253.2 MB in the beginning and 319.8 MB in the end (delta: 66.6 MB). Free memory was 208.6 MB in the beginning and 275.6 MB in the end (delta: -67.0 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.35 ms. Allocated memory is still 319.8 MB. Free memory was 275.6 MB in the beginning and 273.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.41 ms. Allocated memory is still 319.8 MB. Free memory is still 273.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 419.81 ms. Allocated memory is still 319.8 MB. Free memory was 273.0 MB in the beginning and 253.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1777.07 ms. Allocated memory was 319.8 MB in the beginning and 359.1 MB in the end (delta: 39.3 MB). Free memory was 253.7 MB in the beginning and 251.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 42.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 410 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 62 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 49 PlacesBefore, 21 PlacesAfterwards, 51 TransitionsBefore, 22 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 1287 MoverChecksTotal - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: 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, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 93 SDtfs, 44 SDslu, 33 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 521 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...