/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/16_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 10:55:57,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 10:55:57,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 10:55:57,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 10:55:57,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 10:55:57,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 10:55:57,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 10:55:57,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 10:55:57,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 10:55:57,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 10:55:57,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 10:55:57,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 10:55:57,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 10:55:57,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 10:55:57,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 10:55:57,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 10:55:57,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 10:55:57,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 10:55:57,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 10:55:57,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 10:55:57,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 10:55:57,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 10:55:57,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 10:55:57,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 10:55:57,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 10:55:57,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 10:55:57,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 10:55:57,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 10:55:57,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 10:55:57,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 10:55:57,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 10:55:57,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 10:55:57,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 10:55:57,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 10:55:57,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 10:55:57,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 10:55:57,651 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 [2020-10-16 10:55:57,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 10:55:57,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 10:55:57,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 10:55:57,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 10:55:57,698 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 10:55:57,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 10:55:57,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 10:55:57,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 10:55:57,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 10:55:57,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 10:55:57,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 10:55:57,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 10:55:57,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 10:55:57,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 10:55:57,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 10:55:57,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 10:55:57,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 10:55:57,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 10:55:57,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 10:55:57,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 10:55:57,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 10:55:57,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 10:55:57,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 10:55:57,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 10:55:57,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 10:55:57,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 10:55:57,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 10:55:57,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 10:55:57,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 10:55:57,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 10:55:57,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 10:55:57,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 10:55:57,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 10:55:57,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 10:55:57,996 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 10:55:57,996 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-10-16 10:55:58,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e439ad06/93395d716d6a43549a8de3c3b56b343e/FLAG842448f81 [2020-10-16 10:55:58,625 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 10:55:58,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-10-16 10:55:58,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e439ad06/93395d716d6a43549a8de3c3b56b343e/FLAG842448f81 [2020-10-16 10:55:58,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e439ad06/93395d716d6a43549a8de3c3b56b343e [2020-10-16 10:55:58,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 10:55:58,877 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 10:55:58,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 10:55:58,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 10:55:58,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 10:55:58,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:55:58" (1/1) ... [2020-10-16 10:55:58,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b10973e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:55:58, skipping insertion in model container [2020-10-16 10:55:58,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:55:58" (1/1) ... [2020-10-16 10:55:58,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 10:55:58,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 10:55:59,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:55:59,376 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 10:55:59,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:55:59,558 INFO L208 MainTranslator]: Completed translation [2020-10-16 10:55:59,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:55:59 WrapperNode [2020-10-16 10:55:59,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 10:55:59,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 10:55:59,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 10:55:59,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 10:55:59,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:55:59" (1/1) ... [2020-10-16 10:55:59,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:55:59" (1/1) ... [2020-10-16 10:55:59,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 10:55:59,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 10:55:59,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 10:55:59,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 10:55:59,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:55:59" (1/1) ... [2020-10-16 10:55:59,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:55:59" (1/1) ... [2020-10-16 10:55:59,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:55:59" (1/1) ... [2020-10-16 10:55:59,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:55:59" (1/1) ... [2020-10-16 10:55:59,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:55:59" (1/1) ... [2020-10-16 10:55:59,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:55:59" (1/1) ... [2020-10-16 10:55:59,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:55:59" (1/1) ... [2020-10-16 10:55:59,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 10:55:59,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 10:55:59,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 10:55:59,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 10:55:59,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:55:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 10:55:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 10:55:59,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 10:55:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 10:55:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 10:55:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 10:55:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 10:55:59,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 10:55:59,788 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 10:56:00,141 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 10:56:00,142 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 10:56:00,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:56:00 BoogieIcfgContainer [2020-10-16 10:56:00,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 10:56:00,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 10:56:00,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 10:56:00,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 10:56:00,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 10:55:58" (1/3) ... [2020-10-16 10:56:00,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e1d42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:56:00, skipping insertion in model container [2020-10-16 10:56:00,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:55:59" (2/3) ... [2020-10-16 10:56:00,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e1d42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:56:00, skipping insertion in model container [2020-10-16 10:56:00,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:56:00" (3/3) ... [2020-10-16 10:56:00,167 INFO L111 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2020-10-16 10:56:00,180 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 10:56:00,180 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 10:56:00,188 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 10:56:00,189 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 10:56:00,212 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:00,213 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:00,213 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:00,214 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:00,215 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:00,215 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:00,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:00,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:00,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:00,220 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:00,225 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 10:56:00,237 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 10:56:00,257 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 10:56:00,257 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 10:56:00,257 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 10:56:00,257 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 10:56:00,258 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 10:56:00,258 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 10:56:00,258 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 10:56:00,258 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 10:56:00,269 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 10:56:00,272 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 51 transitions, 107 flow [2020-10-16 10:56:00,274 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 51 transitions, 107 flow [2020-10-16 10:56:00,276 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 107 flow [2020-10-16 10:56:00,308 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2020-10-16 10:56:00,309 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 10:56:00,314 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. [2020-10-16 10:56:00,317 INFO L117 LiptonReduction]: Number of co-enabled transitions 672 [2020-10-16 10:56:01,226 INFO L132 LiptonReduction]: Checked pairs total: 1287 [2020-10-16 10:56:01,227 INFO L134 LiptonReduction]: Total number of compositions: 37 [2020-10-16 10:56:01,235 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 22 transitions, 49 flow [2020-10-16 10:56:01,248 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 66 states. [2020-10-16 10:56:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-16 10:56:01,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 10:56:01,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:01,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 10:56:01,258 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:01,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:01,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1942834628, now seen corresponding path program 1 times [2020-10-16 10:56:01,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:01,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797884735] [2020-10-16 10:56:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:01,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797884735] [2020-10-16 10:56:01,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:01,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:56:01,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942993502] [2020-10-16 10:56:01,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 10:56:01,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:01,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 10:56:01,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 10:56:01,463 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2020-10-16 10:56:01,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:01,481 INFO L93 Difference]: Finished difference Result 66 states and 130 transitions. [2020-10-16 10:56:01,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 10:56:01,483 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-16 10:56:01,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:01,496 INFO L225 Difference]: With dead ends: 66 [2020-10-16 10:56:01,496 INFO L226 Difference]: Without dead ends: 62 [2020-10-16 10:56:01,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 10:56:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-16 10:56:01,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-16 10:56:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-16 10:56:01,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 122 transitions. [2020-10-16 10:56:01,545 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 122 transitions. Word has length 6 [2020-10-16 10:56:01,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:01,546 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 122 transitions. [2020-10-16 10:56:01,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 10:56:01,546 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 122 transitions. [2020-10-16 10:56:01,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 10:56:01,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:01,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:01,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 10:56:01,548 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:01,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:01,549 INFO L82 PathProgramCache]: Analyzing trace with hash 98318518, now seen corresponding path program 1 times [2020-10-16 10:56:01,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:01,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827374775] [2020-10-16 10:56:01,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:01,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827374775] [2020-10-16 10:56:01,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:01,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:56:01,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471965329] [2020-10-16 10:56:01,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:01,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:01,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:01,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:01,621 INFO L87 Difference]: Start difference. First operand 62 states and 122 transitions. Second operand 3 states. [2020-10-16 10:56:01,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:01,651 INFO L93 Difference]: Finished difference Result 66 states and 121 transitions. [2020-10-16 10:56:01,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:01,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 10:56:01,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:01,653 INFO L225 Difference]: With dead ends: 66 [2020-10-16 10:56:01,653 INFO L226 Difference]: Without dead ends: 56 [2020-10-16 10:56:01,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:01,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-16 10:56:01,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-16 10:56:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-16 10:56:01,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-16 10:56:01,663 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 7 [2020-10-16 10:56:01,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:01,663 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-16 10:56:01,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:01,664 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-16 10:56:01,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 10:56:01,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:01,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:01,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 10:56:01,665 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:01,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:01,666 INFO L82 PathProgramCache]: Analyzing trace with hash 114699826, now seen corresponding path program 1 times [2020-10-16 10:56:01,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:01,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720035943] [2020-10-16 10:56:01,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:01,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720035943] [2020-10-16 10:56:01,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:01,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:56:01,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852950491] [2020-10-16 10:56:01,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:01,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:01,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:01,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:01,733 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 3 states. [2020-10-16 10:56:01,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:01,754 INFO L93 Difference]: Finished difference Result 48 states and 85 transitions. [2020-10-16 10:56:01,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:01,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 10:56:01,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:01,758 INFO L225 Difference]: With dead ends: 48 [2020-10-16 10:56:01,758 INFO L226 Difference]: Without dead ends: 38 [2020-10-16 10:56:01,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:01,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-16 10:56:01,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-16 10:56:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 10:56:01,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 66 transitions. [2020-10-16 10:56:01,768 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 66 transitions. Word has length 7 [2020-10-16 10:56:01,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:01,769 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 66 transitions. [2020-10-16 10:56:01,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:01,769 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 66 transitions. [2020-10-16 10:56:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:56:01,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:01,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:01,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 10:56:01,773 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:01,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:01,773 INFO L82 PathProgramCache]: Analyzing trace with hash -480213144, now seen corresponding path program 1 times [2020-10-16 10:56:01,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:01,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40492195] [2020-10-16 10:56:01,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:01,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40492195] [2020-10-16 10:56:01,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:01,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 10:56:01,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839887096] [2020-10-16 10:56:01,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 10:56:01,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:01,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 10:56:01,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 10:56:01,846 INFO L87 Difference]: Start difference. First operand 38 states and 66 transitions. Second operand 4 states. [2020-10-16 10:56:01,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:01,876 INFO L93 Difference]: Finished difference Result 43 states and 75 transitions. [2020-10-16 10:56:01,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 10:56:01,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 10:56:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:01,877 INFO L225 Difference]: With dead ends: 43 [2020-10-16 10:56:01,877 INFO L226 Difference]: Without dead ends: 34 [2020-10-16 10:56:01,878 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 [2020-10-16 10:56:01,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-16 10:56:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-16 10:56:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-16 10:56:01,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 53 transitions. [2020-10-16 10:56:01,883 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 53 transitions. Word has length 11 [2020-10-16 10:56:01,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:01,884 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 53 transitions. [2020-10-16 10:56:01,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 10:56:01,884 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 53 transitions. [2020-10-16 10:56:01,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:56:01,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:01,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:01,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 10:56:01,885 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:01,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:01,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1657399704, now seen corresponding path program 2 times [2020-10-16 10:56:01,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:01,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633322453] [2020-10-16 10:56:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:01,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633322453] [2020-10-16 10:56:01,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:01,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 10:56:01,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85811037] [2020-10-16 10:56:01,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 10:56:01,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:01,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 10:56:01,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 10:56:01,944 INFO L87 Difference]: Start difference. First operand 34 states and 53 transitions. Second operand 4 states. [2020-10-16 10:56:01,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:01,959 INFO L93 Difference]: Finished difference Result 17 states and 29 transitions. [2020-10-16 10:56:01,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 10:56:01,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 10:56:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:01,960 INFO L225 Difference]: With dead ends: 17 [2020-10-16 10:56:01,961 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 10:56:01,961 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 [2020-10-16 10:56:01,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 10:56:01,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 10:56:01,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 10:56:01,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 10:56:01,962 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-16 10:56:01,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:01,963 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 10:56:01,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 10:56:01,963 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 10:56:01,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 10:56:01,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 10:56:01,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 10:56:01 BasicIcfg [2020-10-16 10:56:01,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 10:56:01,970 INFO L168 Benchmark]: Toolchain (without parser) took 3092.87 ms. Allocated memory was 140.0 MB in the beginning and 237.0 MB in the end (delta: 97.0 MB). Free memory was 101.8 MB in the beginning and 97.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 101.0 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:01,971 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 10:56:01,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.17 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 163.2 MB in the end (delta: -61.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:01,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.51 ms. Allocated memory is still 204.5 MB. Free memory was 163.2 MB in the beginning and 161.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:01,974 INFO L168 Benchmark]: Boogie Preprocessor took 61.73 ms. Allocated memory is still 204.5 MB. Free memory was 161.2 MB in the beginning and 159.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:01,975 INFO L168 Benchmark]: RCFGBuilder took 442.83 ms. Allocated memory is still 204.5 MB. Free memory was 159.8 MB in the beginning and 141.2 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:01,976 INFO L168 Benchmark]: TraceAbstraction took 1816.67 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 140.5 MB in the beginning and 97.8 MB in the end (delta: 42.7 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:01,981 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 682.17 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 163.2 MB in the end (delta: -61.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 79.51 ms. Allocated memory is still 204.5 MB. Free memory was 163.2 MB in the beginning and 161.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.73 ms. Allocated memory is still 204.5 MB. Free memory was 161.2 MB in the beginning and 159.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 442.83 ms. Allocated memory is still 204.5 MB. Free memory was 159.8 MB in the beginning and 141.2 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1816.67 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 140.5 MB in the beginning and 97.8 MB in the end (delta: 42.7 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 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: 0.9s, 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: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, 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...