/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-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/15_dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 00:26:55,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 00:26:55,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 00:26:55,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 00:26:55,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 00:26:55,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 00:26:55,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 00:26:55,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 00:26:55,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 00:26:55,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 00:26:55,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 00:26:55,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 00:26:55,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 00:26:55,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 00:26:55,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 00:26:55,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 00:26:55,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 00:26:55,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 00:26:55,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 00:26:55,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 00:26:55,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 00:26:55,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 00:26:55,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 00:26:55,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 00:26:55,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 00:26:55,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 00:26:55,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 00:26:55,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 00:26:55,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 00:26:55,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 00:26:55,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 00:26:55,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 00:26:55,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 00:26:55,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 00:26:55,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 00:26:55,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 00:26:55,587 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-PN-SemanticLbe.epf [2020-10-16 00:26:55,624 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 00:26:55,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 00:26:55,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 00:26:55,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 00:26:55,627 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 00:26:55,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 00:26:55,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 00:26:55,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 00:26:55,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 00:26:55,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 00:26:55,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 00:26:55,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 00:26:55,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 00:26:55,630 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 00:26:55,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 00:26:55,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 00:26:55,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 00:26:55,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 00:26:55,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 00:26:55,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 00:26:55,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 00:26:55,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 00:26:55,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 00:26:55,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 00:26:55,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 00:26:55,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 00:26:55,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 00:26:55,633 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 00:26:55,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 00:26:55,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 00:26:55,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 00:26:55,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 00:26:55,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 00:26:55,969 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 00:26:55,970 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-10-16 00:26:56,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80251857/7189023813b34167a86f6eb942712c1f/FLAGd19437a2a [2020-10-16 00:26:56,597 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 00:26:56,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-10-16 00:26:56,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80251857/7189023813b34167a86f6eb942712c1f/FLAGd19437a2a [2020-10-16 00:26:56,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80251857/7189023813b34167a86f6eb942712c1f [2020-10-16 00:26:56,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 00:26:56,878 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 00:26:56,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 00:26:56,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 00:26:56,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 00:26:56,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:26:56" (1/1) ... [2020-10-16 00:26:56,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2458d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:56, skipping insertion in model container [2020-10-16 00:26:56,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:26:56" (1/1) ... [2020-10-16 00:26:56,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 00:26:56,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 00:26:57,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:26:57,470 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 00:26:57,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:26:57,598 INFO L208 MainTranslator]: Completed translation [2020-10-16 00:26:57,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:57 WrapperNode [2020-10-16 00:26:57,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 00:26:57,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 00:26:57,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 00:26:57,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 00:26:57,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:57" (1/1) ... [2020-10-16 00:26:57,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:57" (1/1) ... [2020-10-16 00:26:57,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 00:26:57,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 00:26:57,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 00:26:57,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 00:26:57,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:57" (1/1) ... [2020-10-16 00:26:57,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:57" (1/1) ... [2020-10-16 00:26:57,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:57" (1/1) ... [2020-10-16 00:26:57,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:57" (1/1) ... [2020-10-16 00:26:57,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:57" (1/1) ... [2020-10-16 00:26:57,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:57" (1/1) ... [2020-10-16 00:26:57,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:57" (1/1) ... [2020-10-16 00:26:57,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 00:26:57,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 00:26:57,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 00:26:57,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 00:26:57,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:57" (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 [2020-10-16 00:26:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 00:26:57,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 00:26:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 00:26:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 00:26:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 00:26:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 00:26:57,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 00:26:57,744 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 00:26:58,032 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 00:26:58,032 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-16 00:26:58,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:26:58 BoogieIcfgContainer [2020-10-16 00:26:58,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 00:26:58,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 00:26:58,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 00:26:58,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 00:26:58,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:26:56" (1/3) ... [2020-10-16 00:26:58,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d74e7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:26:58, skipping insertion in model container [2020-10-16 00:26:58,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:57" (2/3) ... [2020-10-16 00:26:58,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d74e7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:26:58, skipping insertion in model container [2020-10-16 00:26:58,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:26:58" (3/3) ... [2020-10-16 00:26:58,043 INFO L111 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2020-10-16 00:26:58,056 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 00:26:58,067 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 00:26:58,068 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 00:26:58,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:26:58,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:26:58,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:26:58,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:26:58,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:26:58,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:26:58,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:26:58,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:26:58,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:26:58,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:26:58,122 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 00:26:58,144 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 00:26:58,145 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 00:26:58,145 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 00:26:58,145 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 00:26:58,145 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 00:26:58,145 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 00:26:58,146 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 00:26:58,146 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 00:26:58,159 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions, 135 flow [2020-10-16 00:26:58,201 INFO L129 PetriNetUnfolder]: 12/64 cut-off events. [2020-10-16 00:26:58,201 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:26:58,207 INFO L80 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2020-10-16 00:26:58,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 65 transitions, 135 flow [2020-10-16 00:26:58,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 64 transitions, 131 flow [2020-10-16 00:26:58,217 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 00:26:58,219 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 64 transitions, 131 flow [2020-10-16 00:26:58,222 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 64 transitions, 131 flow [2020-10-16 00:26:58,223 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 56 places, 64 transitions, 131 flow [2020-10-16 00:26:58,242 INFO L129 PetriNetUnfolder]: 12/64 cut-off events. [2020-10-16 00:26:58,243 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:26:58,244 INFO L80 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2020-10-16 00:26:58,246 INFO L117 LiptonReduction]: Number of co-enabled transitions 1302 [2020-10-16 00:26:59,272 INFO L132 LiptonReduction]: Checked pairs total: 2818 [2020-10-16 00:26:59,273 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-16 00:26:59,276 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1061 [2020-10-16 00:26:59,284 INFO L129 PetriNetUnfolder]: 4/16 cut-off events. [2020-10-16 00:26:59,284 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:26:59,284 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:26:59,285 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 00:26:59,286 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:26:59,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:26:59,292 INFO L82 PathProgramCache]: Analyzing trace with hash 265895468, now seen corresponding path program 1 times [2020-10-16 00:26:59,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:26:59,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107538105] [2020-10-16 00:26:59,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:26:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:26:59,482 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 00:26:59,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107538105] [2020-10-16 00:26:59,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:26:59,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:26:59,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957991744] [2020-10-16 00:26:59,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 00:26:59,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:26:59,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 00:26:59,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 00:26:59,511 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 108 [2020-10-16 00:26:59,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 32 transitions, 67 flow. Second operand 2 states. [2020-10-16 00:26:59,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:26:59,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 108 [2020-10-16 00:26:59,515 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:26:59,526 INFO L129 PetriNetUnfolder]: 6/28 cut-off events. [2020-10-16 00:26:59,526 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:26:59,527 INFO L80 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 6/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 4/24 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2020-10-16 00:26:59,528 INFO L132 encePairwiseOnDemand]: 104/108 looper letters, 0 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2020-10-16 00:26:59,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 59 flow [2020-10-16 00:26:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 00:26:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 00:26:59,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 190 transitions. [2020-10-16 00:26:59,544 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8796296296296297 [2020-10-16 00:26:59,545 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 190 transitions. [2020-10-16 00:26:59,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 190 transitions. [2020-10-16 00:26:59,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:26:59,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 190 transitions. [2020-10-16 00:26:59,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 00:26:59,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 00:26:59,560 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 00:26:59,562 INFO L185 Difference]: Start difference. First operand has 26 places, 32 transitions, 67 flow. Second operand 2 states and 190 transitions. [2020-10-16 00:26:59,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 59 flow [2020-10-16 00:26:59,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 58 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 00:26:59,568 INFO L241 Difference]: Finished difference. Result has 26 places, 28 transitions, 58 flow [2020-10-16 00:26:59,571 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=26, PETRI_TRANSITIONS=28} [2020-10-16 00:26:59,572 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2020-10-16 00:26:59,573 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 28 transitions, 58 flow [2020-10-16 00:26:59,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 00:26:59,573 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:26:59,573 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 00:26:59,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 00:26:59,574 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:26:59,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:26:59,574 INFO L82 PathProgramCache]: Analyzing trace with hash -346472462, now seen corresponding path program 1 times [2020-10-16 00:26:59,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:26:59,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888209261] [2020-10-16 00:26:59,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:26:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:26:59,678 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 00:26:59,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888209261] [2020-10-16 00:26:59,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:26:59,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:26:59,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239340124] [2020-10-16 00:26:59,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:26:59,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:26:59,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:26:59,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:26:59,683 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2020-10-16 00:26:59,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 28 transitions, 58 flow. Second operand 3 states. [2020-10-16 00:26:59,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:26:59,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2020-10-16 00:26:59,684 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:26:59,716 INFO L129 PetriNetUnfolder]: 13/59 cut-off events. [2020-10-16 00:26:59,716 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:26:59,717 INFO L80 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 59 events. 13/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 194 event pairs, 2 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 89. Up to 19 conditions per place. [2020-10-16 00:26:59,718 INFO L132 encePairwiseOnDemand]: 104/108 looper letters, 8 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2020-10-16 00:26:59,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 84 flow [2020-10-16 00:26:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:26:59,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:26:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2020-10-16 00:26:59,722 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7685185185185185 [2020-10-16 00:26:59,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2020-10-16 00:26:59,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2020-10-16 00:26:59,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:26:59,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2020-10-16 00:26:59,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:26:59,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:26:59,727 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:26:59,727 INFO L185 Difference]: Start difference. First operand has 26 places, 28 transitions, 58 flow. Second operand 3 states and 249 transitions. [2020-10-16 00:26:59,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 84 flow [2020-10-16 00:26:59,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 84 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 00:26:59,729 INFO L241 Difference]: Finished difference. Result has 29 places, 29 transitions, 72 flow [2020-10-16 00:26:59,730 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2020-10-16 00:26:59,730 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2020-10-16 00:26:59,731 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 72 flow [2020-10-16 00:26:59,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:26:59,731 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:26:59,731 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 00:26:59,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 00:26:59,731 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:26:59,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:26:59,732 INFO L82 PathProgramCache]: Analyzing trace with hash -347203723, now seen corresponding path program 1 times [2020-10-16 00:26:59,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:26:59,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614209837] [2020-10-16 00:26:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:26:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:26:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:26:59,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614209837] [2020-10-16 00:26:59,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:26:59,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:26:59,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171426489] [2020-10-16 00:26:59,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:26:59,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:26:59,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:26:59,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:26:59,774 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2020-10-16 00:26:59,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 72 flow. Second operand 3 states. [2020-10-16 00:26:59,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:26:59,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2020-10-16 00:26:59,775 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:26:59,811 INFO L129 PetriNetUnfolder]: 8/48 cut-off events. [2020-10-16 00:26:59,811 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 00:26:59,812 INFO L80 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 48 events. 8/48 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 148 event pairs, 2 based on Foata normal form. 6/48 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2020-10-16 00:26:59,813 INFO L132 encePairwiseOnDemand]: 103/108 looper letters, 5 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2020-10-16 00:26:59,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 88 flow [2020-10-16 00:26:59,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:26:59,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:26:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2020-10-16 00:26:59,816 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7623456790123457 [2020-10-16 00:26:59,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2020-10-16 00:26:59,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2020-10-16 00:26:59,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:26:59,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2020-10-16 00:26:59,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:26:59,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:26:59,819 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:26:59,819 INFO L185 Difference]: Start difference. First operand has 29 places, 29 transitions, 72 flow. Second operand 3 states and 247 transitions. [2020-10-16 00:26:59,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 88 flow [2020-10-16 00:26:59,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 00:26:59,821 INFO L241 Difference]: Finished difference. Result has 31 places, 29 transitions, 83 flow [2020-10-16 00:26:59,822 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2020-10-16 00:26:59,822 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2020-10-16 00:26:59,822 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 83 flow [2020-10-16 00:26:59,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:26:59,822 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:26:59,823 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:26:59,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 00:26:59,823 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:26:59,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:26:59,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1263974877, now seen corresponding path program 1 times [2020-10-16 00:26:59,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:26:59,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180454480] [2020-10-16 00:26:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:26:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:26:59,857 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 00:26:59,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180454480] [2020-10-16 00:26:59,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:26:59,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:26:59,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125846902] [2020-10-16 00:26:59,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:26:59,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:26:59,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:26:59,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:26:59,860 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2020-10-16 00:26:59,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 83 flow. Second operand 3 states. [2020-10-16 00:26:59,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:26:59,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2020-10-16 00:26:59,861 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:26:59,896 INFO L129 PetriNetUnfolder]: 25/92 cut-off events. [2020-10-16 00:26:59,897 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2020-10-16 00:26:59,898 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 92 events. 25/92 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 385 event pairs, 8 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 157. Up to 21 conditions per place. [2020-10-16 00:26:59,898 INFO L132 encePairwiseOnDemand]: 103/108 looper letters, 6 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2020-10-16 00:26:59,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 107 flow [2020-10-16 00:26:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:26:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:26:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2020-10-16 00:26:59,901 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7469135802469136 [2020-10-16 00:26:59,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2020-10-16 00:26:59,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2020-10-16 00:26:59,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:26:59,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2020-10-16 00:26:59,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:26:59,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:26:59,904 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:26:59,904 INFO L185 Difference]: Start difference. First operand has 31 places, 29 transitions, 83 flow. Second operand 3 states and 242 transitions. [2020-10-16 00:26:59,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 107 flow [2020-10-16 00:26:59,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 101 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 00:26:59,906 INFO L241 Difference]: Finished difference. Result has 32 places, 29 transitions, 91 flow [2020-10-16 00:26:59,907 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2020-10-16 00:26:59,907 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2020-10-16 00:26:59,907 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 91 flow [2020-10-16 00:26:59,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:26:59,907 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:26:59,907 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:26:59,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 00:26:59,908 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:26:59,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:26:59,908 INFO L82 PathProgramCache]: Analyzing trace with hash -896482607, now seen corresponding path program 2 times [2020-10-16 00:26:59,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:26:59,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075101982] [2020-10-16 00:26:59,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:26:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:26:59,940 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 00:26:59,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075101982] [2020-10-16 00:26:59,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:26:59,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:26:59,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535149558] [2020-10-16 00:26:59,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:26:59,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:26:59,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:26:59,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:26:59,943 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 108 [2020-10-16 00:26:59,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 91 flow. Second operand 3 states. [2020-10-16 00:26:59,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:26:59,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 108 [2020-10-16 00:26:59,944 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:26:59,974 INFO L129 PetriNetUnfolder]: 30/79 cut-off events. [2020-10-16 00:26:59,974 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-10-16 00:26:59,975 INFO L80 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 79 events. 30/79 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 221 event pairs, 3 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 148. Up to 25 conditions per place. [2020-10-16 00:26:59,976 INFO L132 encePairwiseOnDemand]: 103/108 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2020-10-16 00:26:59,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 107 flow [2020-10-16 00:26:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:26:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:26:59,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2020-10-16 00:26:59,978 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7098765432098766 [2020-10-16 00:26:59,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2020-10-16 00:26:59,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2020-10-16 00:26:59,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:26:59,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2020-10-16 00:26:59,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:26:59,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:26:59,980 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:26:59,980 INFO L185 Difference]: Start difference. First operand has 32 places, 29 transitions, 91 flow. Second operand 3 states and 230 transitions. [2020-10-16 00:26:59,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 107 flow [2020-10-16 00:26:59,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 95 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 00:26:59,982 INFO L241 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2020-10-16 00:26:59,982 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2020-10-16 00:26:59,983 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2020-10-16 00:26:59,983 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2020-10-16 00:26:59,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:26:59,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 00:26:59,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:26:59 BasicIcfg [2020-10-16 00:26:59,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 00:26:59,991 INFO L168 Benchmark]: Toolchain (without parser) took 3111.81 ms. Allocated memory was 253.2 MB in the beginning and 358.1 MB in the end (delta: 104.9 MB). Free memory was 208.6 MB in the beginning and 226.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 86.7 MB. Max. memory is 14.2 GB. [2020-10-16 00:26:59,991 INFO L168 Benchmark]: CDTParser took 0.45 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. [2020-10-16 00:26:59,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.44 ms. Allocated memory was 253.2 MB in the beginning and 317.7 MB in the end (delta: 64.5 MB). Free memory was 208.6 MB in the beginning and 275.7 MB in the end (delta: -67.1 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. [2020-10-16 00:26:59,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.61 ms. Allocated memory is still 317.7 MB. Free memory was 275.7 MB in the beginning and 273.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:26:59,994 INFO L168 Benchmark]: Boogie Preprocessor took 29.27 ms. Allocated memory is still 317.7 MB. Free memory was 273.2 MB in the beginning and 270.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:26:59,995 INFO L168 Benchmark]: RCFGBuilder took 351.88 ms. Allocated memory is still 317.7 MB. Free memory was 270.6 MB in the beginning and 251.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-16 00:26:59,996 INFO L168 Benchmark]: TraceAbstraction took 1952.03 ms. Allocated memory was 317.7 MB in the beginning and 358.1 MB in the end (delta: 40.4 MB). Free memory was 251.3 MB in the beginning and 226.7 MB in the end (delta: 24.6 MB). Peak memory consumption was 65.0 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:00,000 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 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 721.44 ms. Allocated memory was 253.2 MB in the beginning and 317.7 MB in the end (delta: 64.5 MB). Free memory was 208.6 MB in the beginning and 275.7 MB in the end (delta: -67.1 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.61 ms. Allocated memory is still 317.7 MB. Free memory was 275.7 MB in the beginning and 273.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.27 ms. Allocated memory is still 317.7 MB. Free memory was 273.2 MB in the beginning and 270.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 351.88 ms. Allocated memory is still 317.7 MB. Free memory was 270.6 MB in the beginning and 251.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1952.03 ms. Allocated memory was 317.7 MB in the beginning and 358.1 MB in the end (delta: 40.4 MB). Free memory was 251.3 MB in the beginning and 226.7 MB in the end (delta: 24.6 MB). Peak memory consumption was 65.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 848 VarBasedMoverChecksPositive, 65 VarBasedMoverChecksNegative, 34 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 132 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 56 PlacesBefore, 26 PlacesAfterwards, 64 TransitionsBefore, 32 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 43 TotalNumberOfCompositions, 2818 MoverChecksTotal - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 701]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 28 SDtfs, 8 SDslu, 0 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 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...