/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 00:01:14,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 00:01:14,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 00:01:14,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 00:01:14,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 00:01:14,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 00:01:14,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 00:01:14,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 00:01:14,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 00:01:14,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 00:01:14,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 00:01:14,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 00:01:14,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 00:01:14,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 00:01:14,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 00:01:14,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 00:01:14,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 00:01:14,461 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 [2021-03-25 00:01:14,490 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 00:01:14,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 00:01:14,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 00:01:14,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 00:01:14,493 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 00:01:14,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 00:01:14,493 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 00:01:14,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 00:01:14,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 00:01:14,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 00:01:14,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 00:01:14,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 00:01:14,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 00:01:14,495 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 00:01:14,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 00:01:14,495 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 00:01:14,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 00:01:14,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 00:01:14,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 00:01:14,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 00:01:14,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 00:01:14,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:01:14,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 00:01:14,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 00:01:14,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 00:01:14,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 00:01:14,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 00:01:14,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 00:01:14,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 00:01:14,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 00:01:14,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 00:01:14,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 00:01:14,831 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 00:01:14,832 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 00:01:14,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl [2021-03-25 00:01:14,842 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl' [2021-03-25 00:01:14,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 00:01:14,864 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 00:01:14,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 00:01:14,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 00:01:14,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 00:01:14,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:14" (1/1) ... [2021-03-25 00:01:14,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:14" (1/1) ... [2021-03-25 00:01:14,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 00:01:14,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 00:01:14,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 00:01:14,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 00:01:14,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:14" (1/1) ... [2021-03-25 00:01:14,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:14" (1/1) ... [2021-03-25 00:01:14,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:14" (1/1) ... [2021-03-25 00:01:14,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:14" (1/1) ... [2021-03-25 00:01:14,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:14" (1/1) ... [2021-03-25 00:01:14,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:14" (1/1) ... [2021-03-25 00:01:14,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:14" (1/1) ... [2021-03-25 00:01:14,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 00:01:14,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 00:01:14,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 00:01:14,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 00:01:14,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:14" (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 [2021-03-25 00:01:14,972 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 00:01:14,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 00:01:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 00:01:14,974 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 00:01:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 00:01:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 00:01:14,974 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 00:01:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 00:01:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 00:01:14,975 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 00:01:15,186 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 00:01:15,187 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 00:01:15,188 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:01:15 BoogieIcfgContainer [2021-03-25 00:01:15,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 00:01:15,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 00:01:15,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 00:01:15,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 00:01:15,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:01:14" (1/2) ... [2021-03-25 00:01:15,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329bf0c4 and model type bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:01:15, skipping insertion in model container [2021-03-25 00:01:15,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:01:15" (2/2) ... [2021-03-25 00:01:15,193 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-2.wvr.bpl [2021-03-25 00:01:15,216 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 00:01:15,219 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 00:01:15,219 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 00:01:15,272 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-25 00:01:15,290 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 00:01:15,325 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 00:01:15,326 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 00:01:15,326 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 00:01:15,326 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 00:01:15,326 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 00:01:15,326 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 00:01:15,326 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 00:01:15,326 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 00:01:15,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 78 flow [2021-03-25 00:01:15,368 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-03-25 00:01:15,368 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 00:01:15,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 29 events. 0/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:01:15,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 78 flow [2021-03-25 00:01:15,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 66 flow [2021-03-25 00:01:15,374 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 00:01:15,391 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 27 transitions, 66 flow [2021-03-25 00:01:15,396 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 27 transitions, 66 flow [2021-03-25 00:01:15,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 66 flow [2021-03-25 00:01:15,422 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-03-25 00:01:15,423 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 00:01:15,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 0/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:01:15,425 INFO L142 LiptonReduction]: Number of co-enabled transitions 240 [2021-03-25 00:01:15,746 INFO L154 LiptonReduction]: Checked pairs total: 566 [2021-03-25 00:01:15,746 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 00:01:15,750 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 377 [2021-03-25 00:01:15,767 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 00:01:15,768 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 00:01:15,768 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:15,768 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:01:15,769 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:15,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:15,774 INFO L82 PathProgramCache]: Analyzing trace with hash 183877987, now seen corresponding path program 1 times [2021-03-25 00:01:15,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:15,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439953370] [2021-03-25 00:01:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:15,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:15,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:15,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:15,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:15,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:15,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:15,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:15,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:15,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 00:01:15,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:15,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439953370] [2021-03-25 00:01:15,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:15,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:01:15,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061061537] [2021-03-25 00:01:15,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:01:15,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:16,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:01:16,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:01:16,006 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 38 [2021-03-25 00:01:16,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 52 flow. Second operand has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:16,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 38 [2021-03-25 00:01:16,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:16,150 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2021-03-25 00:01:16,150 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-25 00:01:16,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 44 events. 1/44 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 115 event pairs, 0 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 52. Up to 5 conditions per place. [2021-03-25 00:01:16,154 INFO L132 encePairwiseOnDemand]: 32/38 looper letters, 7 selfloop transitions, 7 changer transitions 2/30 dead transitions. [2021-03-25 00:01:16,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 104 flow [2021-03-25 00:01:16,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:01:16,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:01:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 257 transitions. [2021-03-25 00:01:16,164 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8453947368421053 [2021-03-25 00:01:16,165 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 257 transitions. [2021-03-25 00:01:16,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 257 transitions. [2021-03-25 00:01:16,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:16,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 257 transitions. [2021-03-25 00:01:16,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.125) internal successors, (257), 8 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,176 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,178 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 52 flow. Second operand 8 states and 257 transitions. [2021-03-25 00:01:16,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 104 flow [2021-03-25 00:01:16,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 96 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 00:01:16,182 INFO L241 Difference]: Finished difference. Result has 33 places, 25 transitions, 82 flow [2021-03-25 00:01:16,184 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2021-03-25 00:01:16,185 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2021-03-25 00:01:16,185 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 82 flow [2021-03-25 00:01:16,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,185 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:16,185 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:01:16,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 00:01:16,186 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:16,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:16,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1578764417, now seen corresponding path program 2 times [2021-03-25 00:01:16,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:16,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107165942] [2021-03-25 00:01:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:16,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:16,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:16,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:16,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:16,250 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 00:01:16,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:16,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107165942] [2021-03-25 00:01:16,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:16,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:01:16,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149763549] [2021-03-25 00:01:16,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:01:16,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:16,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:01:16,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:01:16,263 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 38 [2021-03-25 00:01:16,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:16,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 38 [2021-03-25 00:01:16,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:16,351 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2021-03-25 00:01:16,351 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-25 00:01:16,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 38 events. 1/38 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 68. Up to 5 conditions per place. [2021-03-25 00:01:16,352 INFO L132 encePairwiseOnDemand]: 32/38 looper letters, 4 selfloop transitions, 6 changer transitions 4/28 dead transitions. [2021-03-25 00:01:16,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 124 flow [2021-03-25 00:01:16,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:01:16,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:01:16,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2021-03-25 00:01:16,355 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8355263157894737 [2021-03-25 00:01:16,355 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 254 transitions. [2021-03-25 00:01:16,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 254 transitions. [2021-03-25 00:01:16,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:16,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 254 transitions. [2021-03-25 00:01:16,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.75) internal successors, (254), 8 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,358 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,358 INFO L185 Difference]: Start difference. First operand has 33 places, 25 transitions, 82 flow. Second operand 8 states and 254 transitions. [2021-03-25 00:01:16,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 124 flow [2021-03-25 00:01:16,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 120 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-25 00:01:16,360 INFO L241 Difference]: Finished difference. Result has 38 places, 22 transitions, 81 flow [2021-03-25 00:01:16,360 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=81, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2021-03-25 00:01:16,361 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-03-25 00:01:16,361 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 81 flow [2021-03-25 00:01:16,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,361 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:16,361 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:01:16,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 00:01:16,362 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:16,362 INFO L82 PathProgramCache]: Analyzing trace with hash 634570107, now seen corresponding path program 3 times [2021-03-25 00:01:16,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:16,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736995960] [2021-03-25 00:01:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:16,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:16,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:16,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:16,450 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:01:16,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:16,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:16,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:16,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736995960] [2021-03-25 00:01:16,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:16,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:01:16,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743770083] [2021-03-25 00:01:16,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:01:16,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:16,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:01:16,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:01:16,476 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 38 [2021-03-25 00:01:16,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 22 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:16,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 38 [2021-03-25 00:01:16,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:16,557 INFO L129 PetriNetUnfolder]: 15/83 cut-off events. [2021-03-25 00:01:16,557 INFO L130 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2021-03-25 00:01:16,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 83 events. 15/83 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 283 event pairs, 3 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 166. Up to 25 conditions per place. [2021-03-25 00:01:16,560 INFO L132 encePairwiseOnDemand]: 32/38 looper letters, 12 selfloop transitions, 5 changer transitions 4/34 dead transitions. [2021-03-25 00:01:16,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 147 flow [2021-03-25 00:01:16,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:01:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:01:16,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2021-03-25 00:01:16,608 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6754385964912281 [2021-03-25 00:01:16,608 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 154 transitions. [2021-03-25 00:01:16,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 154 transitions. [2021-03-25 00:01:16,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:16,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 154 transitions. [2021-03-25 00:01:16,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,611 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,612 INFO L185 Difference]: Start difference. First operand has 38 places, 22 transitions, 81 flow. Second operand 6 states and 154 transitions. [2021-03-25 00:01:16,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 147 flow [2021-03-25 00:01:16,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 124 flow, removed 2 selfloop flow, removed 10 redundant places. [2021-03-25 00:01:16,617 INFO L241 Difference]: Finished difference. Result has 34 places, 25 transitions, 89 flow [2021-03-25 00:01:16,617 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2021-03-25 00:01:16,618 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2021-03-25 00:01:16,618 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 89 flow [2021-03-25 00:01:16,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,626 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:16,627 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:01:16,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 00:01:16,627 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:16,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:16,627 INFO L82 PathProgramCache]: Analyzing trace with hash 820672941, now seen corresponding path program 4 times [2021-03-25 00:01:16,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:16,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121192416] [2021-03-25 00:01:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:16,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:16,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:16,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:16,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121192416] [2021-03-25 00:01:16,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:16,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:01:16,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130014400] [2021-03-25 00:01:16,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 00:01:16,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:16,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 00:01:16,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 00:01:16,646 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 38 [2021-03-25 00:01:16,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:16,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 38 [2021-03-25 00:01:16,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:16,655 INFO L129 PetriNetUnfolder]: 2/47 cut-off events. [2021-03-25 00:01:16,656 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 00:01:16,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 47 events. 2/47 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 119 event pairs, 0 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 31. Up to 9 conditions per place. [2021-03-25 00:01:16,656 INFO L132 encePairwiseOnDemand]: 35/38 looper letters, 2 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2021-03-25 00:01:16,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 25 transitions, 99 flow [2021-03-25 00:01:16,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 00:01:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 00:01:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2021-03-25 00:01:16,657 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8596491228070176 [2021-03-25 00:01:16,657 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 98 transitions. [2021-03-25 00:01:16,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 98 transitions. [2021-03-25 00:01:16,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:16,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 98 transitions. [2021-03-25 00:01:16,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,659 INFO L185 Difference]: Start difference. First operand has 34 places, 25 transitions, 89 flow. Second operand 3 states and 98 transitions. [2021-03-25 00:01:16,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 25 transitions, 99 flow [2021-03-25 00:01:16,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 25 transitions, 94 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 00:01:16,660 INFO L241 Difference]: Finished difference. Result has 33 places, 25 transitions, 95 flow [2021-03-25 00:01:16,660 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2021-03-25 00:01:16,661 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2021-03-25 00:01:16,661 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 95 flow [2021-03-25 00:01:16,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,661 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:16,661 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:01:16,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 00:01:16,661 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:16,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:16,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1778299353, now seen corresponding path program 5 times [2021-03-25 00:01:16,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:16,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638723711] [2021-03-25 00:01:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:16,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:16,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:16,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:16,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 00:01:16,714 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-03-25 00:01:16,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 00:01:16,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:16,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638723711] [2021-03-25 00:01:16,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:16,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:01:16,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98138666] [2021-03-25 00:01:16,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:01:16,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:16,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:01:16,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:01:16,726 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 38 [2021-03-25 00:01:16,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:16,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 38 [2021-03-25 00:01:16,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:16,757 INFO L129 PetriNetUnfolder]: 7/56 cut-off events. [2021-03-25 00:01:16,757 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-25 00:01:16,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 56 events. 7/56 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 135 event pairs, 5 based on Foata normal form. 2/57 useless extension candidates. Maximal degree in co-relation 83. Up to 21 conditions per place. [2021-03-25 00:01:16,758 INFO L132 encePairwiseOnDemand]: 34/38 looper letters, 8 selfloop transitions, 2 changer transitions 4/27 dead transitions. [2021-03-25 00:01:16,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 125 flow [2021-03-25 00:01:16,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:01:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:01:16,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2021-03-25 00:01:16,759 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2021-03-25 00:01:16,759 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 125 transitions. [2021-03-25 00:01:16,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 125 transitions. [2021-03-25 00:01:16,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:16,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 125 transitions. [2021-03-25 00:01:16,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,761 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,761 INFO L185 Difference]: Start difference. First operand has 33 places, 25 transitions, 95 flow. Second operand 5 states and 125 transitions. [2021-03-25 00:01:16,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 125 flow [2021-03-25 00:01:16,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 117 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 00:01:16,762 INFO L241 Difference]: Finished difference. Result has 36 places, 22 transitions, 76 flow [2021-03-25 00:01:16,763 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2021-03-25 00:01:16,763 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2021-03-25 00:01:16,763 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 76 flow [2021-03-25 00:01:16,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,763 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:16,763 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:01:16,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 00:01:16,764 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:16,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:16,764 INFO L82 PathProgramCache]: Analyzing trace with hash -2003910253, now seen corresponding path program 6 times [2021-03-25 00:01:16,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:16,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892079412] [2021-03-25 00:01:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:16,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:16,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:16,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:16,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892079412] [2021-03-25 00:01:16,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:16,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:01:16,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470791224] [2021-03-25 00:01:16,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 00:01:16,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:16,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 00:01:16,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 00:01:16,780 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 38 [2021-03-25 00:01:16,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:16,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 38 [2021-03-25 00:01:16,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:16,788 INFO L129 PetriNetUnfolder]: 1/33 cut-off events. [2021-03-25 00:01:16,788 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2021-03-25 00:01:16,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 33 events. 1/33 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 1 based on Foata normal form. 2/35 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2021-03-25 00:01:16,788 INFO L132 encePairwiseOnDemand]: 35/38 looper letters, 2 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2021-03-25 00:01:16,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 22 transitions, 84 flow [2021-03-25 00:01:16,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 00:01:16,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 00:01:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2021-03-25 00:01:16,790 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8596491228070176 [2021-03-25 00:01:16,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 98 transitions. [2021-03-25 00:01:16,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 98 transitions. [2021-03-25 00:01:16,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:16,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 98 transitions. [2021-03-25 00:01:16,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,791 INFO L185 Difference]: Start difference. First operand has 36 places, 22 transitions, 76 flow. Second operand 3 states and 98 transitions. [2021-03-25 00:01:16,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 22 transitions, 84 flow [2021-03-25 00:01:16,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 70 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-25 00:01:16,792 INFO L241 Difference]: Finished difference. Result has 30 places, 22 transitions, 70 flow [2021-03-25 00:01:16,793 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2021-03-25 00:01:16,793 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2021-03-25 00:01:16,793 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 70 flow [2021-03-25 00:01:16,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,793 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:16,793 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:01:16,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 00:01:16,794 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:16,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:16,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1420836179, now seen corresponding path program 7 times [2021-03-25 00:01:16,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:16,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934354952] [2021-03-25 00:01:16,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:16,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:16,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:16,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:16,835 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 00:01:16,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:16,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:16,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:16,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934354952] [2021-03-25 00:01:16,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:16,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:01:16,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381932592] [2021-03-25 00:01:16,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:01:16,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:16,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:01:16,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:01:16,857 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 38 [2021-03-25 00:01:16,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 70 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:16,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 38 [2021-03-25 00:01:16,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:16,905 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2021-03-25 00:01:16,906 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-03-25 00:01:16,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 50 events. 6/50 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 108 event pairs, 3 based on Foata normal form. 3/51 useless extension candidates. Maximal degree in co-relation 47. Up to 12 conditions per place. [2021-03-25 00:01:16,907 INFO L132 encePairwiseOnDemand]: 31/38 looper letters, 6 selfloop transitions, 4 changer transitions 4/27 dead transitions. [2021-03-25 00:01:16,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 116 flow [2021-03-25 00:01:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:01:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:01:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2021-03-25 00:01:16,908 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6491228070175439 [2021-03-25 00:01:16,908 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 148 transitions. [2021-03-25 00:01:16,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 148 transitions. [2021-03-25 00:01:16,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:16,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 148 transitions. [2021-03-25 00:01:16,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,912 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,913 INFO L185 Difference]: Start difference. First operand has 30 places, 22 transitions, 70 flow. Second operand 6 states and 148 transitions. [2021-03-25 00:01:16,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 116 flow [2021-03-25 00:01:16,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:01:16,914 INFO L241 Difference]: Finished difference. Result has 36 places, 22 transitions, 82 flow [2021-03-25 00:01:16,914 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2021-03-25 00:01:16,914 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2021-03-25 00:01:16,914 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 82 flow [2021-03-25 00:01:16,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:16,915 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:16,915 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:01:16,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 00:01:16,915 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:16,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:16,915 INFO L82 PathProgramCache]: Analyzing trace with hash 895086785, now seen corresponding path program 8 times [2021-03-25 00:01:16,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:16,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447304842] [2021-03-25 00:01:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:16,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:16,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:16,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:16,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:17,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:17,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:17,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:17,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:17,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:17,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:17,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:17,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:17,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447304842] [2021-03-25 00:01:17,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:17,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:01:17,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651267949] [2021-03-25 00:01:17,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:01:17,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:17,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:01:17,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:01:17,041 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 38 [2021-03-25 00:01:17,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 82 flow. Second operand has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:17,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:17,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 38 [2021-03-25 00:01:17,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:17,086 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-03-25 00:01:17,086 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-03-25 00:01:17,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 45 events. 1/45 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 1 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 45. Up to 5 conditions per place. [2021-03-25 00:01:17,086 INFO L132 encePairwiseOnDemand]: 31/38 looper letters, 3 selfloop transitions, 8 changer transitions 1/25 dead transitions. [2021-03-25 00:01:17,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 116 flow [2021-03-25 00:01:17,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:01:17,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:01:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2021-03-25 00:01:17,088 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6217105263157895 [2021-03-25 00:01:17,088 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 189 transitions. [2021-03-25 00:01:17,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 189 transitions. [2021-03-25 00:01:17,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:17,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 189 transitions. [2021-03-25 00:01:17,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.625) internal successors, (189), 8 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:17,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:17,090 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:17,090 INFO L185 Difference]: Start difference. First operand has 36 places, 22 transitions, 82 flow. Second operand 8 states and 189 transitions. [2021-03-25 00:01:17,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 25 transitions, 116 flow [2021-03-25 00:01:17,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 98 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-25 00:01:17,091 INFO L241 Difference]: Finished difference. Result has 37 places, 24 transitions, 93 flow [2021-03-25 00:01:17,091 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=93, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2021-03-25 00:01:17,092 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2021-03-25 00:01:17,092 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 93 flow [2021-03-25 00:01:17,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:17,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:01:17,092 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:01:17,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 00:01:17,092 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:01:17,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:01:17,093 INFO L82 PathProgramCache]: Analyzing trace with hash 148764313, now seen corresponding path program 9 times [2021-03-25 00:01:17,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:01:17,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973762355] [2021-03-25 00:01:17,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:01:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:01:17,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:17,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:01:17,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:17,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:01:17,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:17,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:17,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:17,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:17,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:17,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:01:17,151 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-25 00:01:17,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:01:17,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:01:17,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:01:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:01:17,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973762355] [2021-03-25 00:01:17,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:01:17,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:01:17,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205323569] [2021-03-25 00:01:17,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:01:17,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:01:17,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:01:17,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:01:17,162 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 38 [2021-03-25 00:01:17,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 93 flow. Second operand has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:17,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:01:17,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 38 [2021-03-25 00:01:17,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:01:17,204 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-03-25 00:01:17,204 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-03-25 00:01:17,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 17 events. 1/17 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 1 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 34. Up to 5 conditions per place. [2021-03-25 00:01:17,204 INFO L132 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-03-25 00:01:17,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 13 transitions, 64 flow [2021-03-25 00:01:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:01:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:01:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2021-03-25 00:01:17,205 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6090225563909775 [2021-03-25 00:01:17,206 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 162 transitions. [2021-03-25 00:01:17,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 162 transitions. [2021-03-25 00:01:17,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:01:17,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 162 transitions. [2021-03-25 00:01:17,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:17,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:17,207 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:17,207 INFO L185 Difference]: Start difference. First operand has 37 places, 24 transitions, 93 flow. Second operand 7 states and 162 transitions. [2021-03-25 00:01:17,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 13 transitions, 64 flow [2021-03-25 00:01:17,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 13 transitions, 59 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 00:01:17,208 INFO L241 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2021-03-25 00:01:17,208 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2021-03-25 00:01:17,208 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2021-03-25 00:01:17,208 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2021-03-25 00:01:17,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:01:17,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 00:01:17,212 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 12:01:17 BasicIcfg [2021-03-25 00:01:17,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 00:01:17,213 INFO L168 Benchmark]: Toolchain (without parser) took 2348.75 ms. Allocated memory is still 337.6 MB. Free memory was 317.6 MB in the beginning and 230.8 MB in the end (delta: 86.8 MB). Peak memory consumption was 89.8 MB. Max. memory is 16.0 GB. [2021-03-25 00:01:17,213 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 337.6 MB. Free memory was 318.8 MB in the beginning and 318.7 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:01:17,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.44 ms. Allocated memory is still 337.6 MB. Free memory was 317.6 MB in the beginning and 316.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 00:01:17,214 INFO L168 Benchmark]: Boogie Preprocessor took 12.24 ms. Allocated memory is still 337.6 MB. Free memory was 316.1 MB in the beginning and 315.3 MB in the end (delta: 822.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 00:01:17,214 INFO L168 Benchmark]: RCFGBuilder took 282.83 ms. Allocated memory is still 337.6 MB. Free memory was 315.2 MB in the beginning and 304.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-25 00:01:17,215 INFO L168 Benchmark]: TraceAbstraction took 2022.83 ms. Allocated memory is still 337.6 MB. Free memory was 303.6 MB in the beginning and 230.8 MB in the end (delta: 72.8 MB). Peak memory consumption was 75.2 MB. Max. memory is 16.0 GB. [2021-03-25 00:01:17,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 337.6 MB. Free memory was 318.8 MB in the beginning and 318.7 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.44 ms. Allocated memory is still 337.6 MB. Free memory was 317.6 MB in the beginning and 316.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.24 ms. Allocated memory is still 337.6 MB. Free memory was 316.1 MB in the beginning and 315.3 MB in the end (delta: 822.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 282.83 ms. Allocated memory is still 337.6 MB. Free memory was 315.2 MB in the beginning and 304.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2022.83 ms. Allocated memory is still 337.6 MB. Free memory was 303.6 MB in the beginning and 230.8 MB in the end (delta: 72.8 MB). Peak memory consumption was 75.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 350.1ms, 34 PlacesBefore, 27 PlacesAfterwards, 27 TransitionsBefore, 20 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 566 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 285, positive: 233, positive conditional: 0, positive unconditional: 233, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 176, positive: 144, positive conditional: 0, positive unconditional: 144, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 176, positive: 144, positive conditional: 0, positive unconditional: 144, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 176, positive: 137, positive conditional: 0, positive unconditional: 137, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 39, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 193, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 170, negative conditional: 0, negative unconditional: 170, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 285, positive: 89, positive conditional: 0, positive unconditional: 89, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 176, unknown conditional: 0, unknown unconditional: 176] , Statistics on independence cache: Total cache size (in pairs): 76, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - PositiveResult [Line: 54]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1891.1ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 648.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 432.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 44 SDslu, 9 SDs, 0 SdLazy, 262 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 184.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 368.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=4, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.4ms SsaConstructionTime, 80.7ms SatisfiabilityAnalysisTime, 562.9ms InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 171 ConstructedInterpolants, 0 QuantifiedInterpolants, 806 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...