/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/ticket-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 00:18:05,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 00:18:05,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 00:18:05,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 00:18:05,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 00:18:05,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 00:18:05,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 00:18:05,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 00:18:05,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 00:18:05,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 00:18:05,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 00:18:05,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 00:18:05,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 00:18:05,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 00:18:05,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 00:18:05,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 00:18:05,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 00:18:05,120 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 00:18:05,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 00:18:05,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 00:18:05,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 00:18:05,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 00:18:05,157 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 00:18:05,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 00:18:05,158 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 00:18:05,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 00:18:05,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 00:18:05,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 00:18:05,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 00:18:05,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 00:18:05,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 00:18:05,160 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 00:18:05,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 00:18:05,160 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 00:18:05,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 00:18:05,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 00:18:05,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 00:18:05,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 00:18:05,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 00:18:05,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:18:05,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 00:18:05,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 00:18:05,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 00:18:05,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 00:18:05,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 00:18:05,162 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 00:18:05,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 00:18:05,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 00:18:05,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 00:18:05,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 00:18:05,471 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 00:18:05,476 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 00:18:05,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl [2021-03-25 00:18:05,476 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl' [2021-03-25 00:18:05,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 00:18:05,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 00:18:05,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 00:18:05,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 00:18:05,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 00:18:05,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:05" (1/1) ... [2021-03-25 00:18:05,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:05" (1/1) ... [2021-03-25 00:18:05,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 00:18:05,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 00:18:05,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 00:18:05,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 00:18:05,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:05" (1/1) ... [2021-03-25 00:18:05,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:05" (1/1) ... [2021-03-25 00:18:05,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:05" (1/1) ... [2021-03-25 00:18:05,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:05" (1/1) ... [2021-03-25 00:18:05,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:05" (1/1) ... [2021-03-25 00:18:05,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:05" (1/1) ... [2021-03-25 00:18:05,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:05" (1/1) ... [2021-03-25 00:18:05,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 00:18:05,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 00:18:05,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 00:18:05,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 00:18:05,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:05" (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 00:18:05,603 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 00:18:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 00:18:05,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 00:18:05,603 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 00:18:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 00:18:05,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 00:18:05,603 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 00:18:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 00:18:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 00:18:05,604 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 00:18:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 00:18:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 00:18:05,605 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 00:18:05,829 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 00:18:05,830 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 00:18:05,831 INFO L202 PluginConnector]: Adding new model ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:18:05 BoogieIcfgContainer [2021-03-25 00:18:05,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 00:18:05,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 00:18:05,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 00:18:05,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 00:18:05,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:05" (1/2) ... [2021-03-25 00:18:05,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4465740f and model type ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:18:05, skipping insertion in model container [2021-03-25 00:18:05,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:18:05" (2/2) ... [2021-03-25 00:18:05,837 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-3.wvr.bpl [2021-03-25 00:18:05,841 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 00:18:05,843 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 00:18:05,844 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 00:18:05,873 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-25 00:18:05,888 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 00:18:05,903 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 00:18:05,903 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 00:18:05,903 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 00:18:05,903 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 00:18:05,904 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 00:18:05,904 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 00:18:05,904 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 00:18:05,904 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 00:18:05,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 30 transitions, 84 flow [2021-03-25 00:18:05,940 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-03-25 00:18:05,940 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 00:18:05,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 27 events. 0/27 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:18:05,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 30 transitions, 84 flow [2021-03-25 00:18:05,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 25 transitions, 68 flow [2021-03-25 00:18:05,946 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 00:18:05,963 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 25 transitions, 68 flow [2021-03-25 00:18:05,970 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 25 transitions, 68 flow [2021-03-25 00:18:05,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 68 flow [2021-03-25 00:18:05,990 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-03-25 00:18:05,990 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 00:18:05,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 25 events. 0/25 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:18:05,992 INFO L142 LiptonReduction]: Number of co-enabled transitions 234 [2021-03-25 00:18:06,590 INFO L154 LiptonReduction]: Checked pairs total: 375 [2021-03-25 00:18:06,590 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 00:18:06,592 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 647 [2021-03-25 00:18:06,602 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-25 00:18:06,602 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 00:18:06,603 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:06,603 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:06,604 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:06,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:06,608 INFO L82 PathProgramCache]: Analyzing trace with hash 576604323, now seen corresponding path program 1 times [2021-03-25 00:18:06,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:06,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903335700] [2021-03-25 00:18:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:06,796 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-03-25 00:18:06,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:18:06,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:06,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:06,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:06,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:06,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:06,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:18:06,819 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 00:18:06,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903335700] [2021-03-25 00:18:06,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:06,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:18:06,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844931619] [2021-03-25 00:18:06,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:06,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:06,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:06,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:06,839 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 39 [2021-03-25 00:18:06,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 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 00:18:06,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:06,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 39 [2021-03-25 00:18:06,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:06,886 INFO L129 PetriNetUnfolder]: 43/113 cut-off events. [2021-03-25 00:18:06,887 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-03-25 00:18:06,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 113 events. 43/113 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 457 event pairs, 12 based on Foata normal form. 1/112 useless extension candidates. Maximal degree in co-relation 206. Up to 54 conditions per place. [2021-03-25 00:18:06,890 INFO L132 encePairwiseOnDemand]: 30/39 looper letters, 13 selfloop transitions, 7 changer transitions 1/28 dead transitions. [2021-03-25 00:18:06,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 28 transitions, 116 flow [2021-03-25 00:18:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:06,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2021-03-25 00:18:06,899 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2021-03-25 00:18:06,900 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 132 transitions. [2021-03-25 00:18:06,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 132 transitions. [2021-03-25 00:18:06,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:06,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 132 transitions. [2021-03-25 00:18:06,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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 00:18:06,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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 00:18:06,921 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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 00:18:06,923 INFO L185 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 5 states and 132 transitions. [2021-03-25 00:18:06,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 28 transitions, 116 flow [2021-03-25 00:18:06,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-25 00:18:06,930 INFO L241 Difference]: Finished difference. Result has 27 places, 21 transitions, 87 flow [2021-03-25 00:18:06,932 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2021-03-25 00:18:06,935 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2021-03-25 00:18:06,935 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 87 flow [2021-03-25 00:18:06,935 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 00:18:06,935 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:06,935 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:06,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 00:18:06,936 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:06,936 INFO L82 PathProgramCache]: Analyzing trace with hash 572180383, now seen corresponding path program 2 times [2021-03-25 00:18:06,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:06,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478856405] [2021-03-25 00:18:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:06,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:06,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:06,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:06,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:07,007 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 00:18:07,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478856405] [2021-03-25 00:18:07,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:07,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:18:07,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040525577] [2021-03-25 00:18:07,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:07,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:07,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:07,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:07,015 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 39 [2021-03-25 00:18:07,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 00:18:07,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:07,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 39 [2021-03-25 00:18:07,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:07,107 INFO L129 PetriNetUnfolder]: 49/119 cut-off events. [2021-03-25 00:18:07,108 INFO L130 PetriNetUnfolder]: For 74/80 co-relation queries the response was YES. [2021-03-25 00:18:07,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 119 events. 49/119 cut-off events. For 74/80 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 427 event pairs, 7 based on Foata normal form. 10/128 useless extension candidates. Maximal degree in co-relation 324. Up to 62 conditions per place. [2021-03-25 00:18:07,109 INFO L132 encePairwiseOnDemand]: 33/39 looper letters, 18 selfloop transitions, 11 changer transitions 0/36 dead transitions. [2021-03-25 00:18:07,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 36 transitions, 208 flow [2021-03-25 00:18:07,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:07,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2021-03-25 00:18:07,111 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2021-03-25 00:18:07,111 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 125 transitions. [2021-03-25 00:18:07,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 125 transitions. [2021-03-25 00:18:07,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:07,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 125 transitions. [2021-03-25 00:18:07,112 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 00:18:07,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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 00:18:07,113 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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 00:18:07,113 INFO L185 Difference]: Start difference. First operand has 27 places, 21 transitions, 87 flow. Second operand 5 states and 125 transitions. [2021-03-25 00:18:07,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 36 transitions, 208 flow [2021-03-25 00:18:07,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 188 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 00:18:07,116 INFO L241 Difference]: Finished difference. Result has 30 places, 28 transitions, 149 flow [2021-03-25 00:18:07,116 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2021-03-25 00:18:07,116 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2021-03-25 00:18:07,116 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 149 flow [2021-03-25 00:18:07,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 00:18:07,117 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:07,117 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:07,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 00:18:07,117 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:07,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:07,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1649191691, now seen corresponding path program 3 times [2021-03-25 00:18:07,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:07,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061640080] [2021-03-25 00:18:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:07,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:07,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:07,154 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 00:18:07,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061640080] [2021-03-25 00:18:07,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:07,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:18:07,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920755201] [2021-03-25 00:18:07,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:07,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:07,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:07,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:07,156 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 39 [2021-03-25 00:18:07,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 00:18:07,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:07,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 39 [2021-03-25 00:18:07,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:07,213 INFO L129 PetriNetUnfolder]: 41/111 cut-off events. [2021-03-25 00:18:07,213 INFO L130 PetriNetUnfolder]: For 126/132 co-relation queries the response was YES. [2021-03-25 00:18:07,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 111 events. 41/111 cut-off events. For 126/132 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 403 event pairs, 14 based on Foata normal form. 9/119 useless extension candidates. Maximal degree in co-relation 347. Up to 56 conditions per place. [2021-03-25 00:18:07,214 INFO L132 encePairwiseOnDemand]: 32/39 looper letters, 16 selfloop transitions, 12 changer transitions 2/37 dead transitions. [2021-03-25 00:18:07,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 37 transitions, 253 flow [2021-03-25 00:18:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2021-03-25 00:18:07,216 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6358974358974359 [2021-03-25 00:18:07,216 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 124 transitions. [2021-03-25 00:18:07,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 124 transitions. [2021-03-25 00:18:07,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:07,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 124 transitions. [2021-03-25 00:18:07,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 00:18:07,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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 00:18:07,218 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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 00:18:07,218 INFO L185 Difference]: Start difference. First operand has 30 places, 28 transitions, 149 flow. Second operand 5 states and 124 transitions. [2021-03-25 00:18:07,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 37 transitions, 253 flow [2021-03-25 00:18:07,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 249 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 00:18:07,220 INFO L241 Difference]: Finished difference. Result has 35 places, 30 transitions, 197 flow [2021-03-25 00:18:07,221 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2021-03-25 00:18:07,221 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2021-03-25 00:18:07,221 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 197 flow [2021-03-25 00:18:07,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 00:18:07,221 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:07,221 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:07,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 00:18:07,222 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:07,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:07,222 INFO L82 PathProgramCache]: Analyzing trace with hash 248533933, now seen corresponding path program 4 times [2021-03-25 00:18:07,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:07,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708715716] [2021-03-25 00:18:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:07,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:07,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:07,259 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 00:18:07,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708715716] [2021-03-25 00:18:07,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:07,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:18:07,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204371674] [2021-03-25 00:18:07,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:07,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:07,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:07,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:07,262 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 39 [2021-03-25 00:18:07,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 00:18:07,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:07,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 39 [2021-03-25 00:18:07,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:07,325 INFO L129 PetriNetUnfolder]: 22/62 cut-off events. [2021-03-25 00:18:07,325 INFO L130 PetriNetUnfolder]: For 107/111 co-relation queries the response was YES. [2021-03-25 00:18:07,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 62 events. 22/62 cut-off events. For 107/111 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 151 event pairs, 6 based on Foata normal form. 10/72 useless extension candidates. Maximal degree in co-relation 225. Up to 37 conditions per place. [2021-03-25 00:18:07,327 INFO L132 encePairwiseOnDemand]: 32/39 looper letters, 14 selfloop transitions, 12 changer transitions 2/35 dead transitions. [2021-03-25 00:18:07,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 281 flow [2021-03-25 00:18:07,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:07,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2021-03-25 00:18:07,330 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6307692307692307 [2021-03-25 00:18:07,330 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 123 transitions. [2021-03-25 00:18:07,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 123 transitions. [2021-03-25 00:18:07,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:07,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 123 transitions. [2021-03-25 00:18:07,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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 00:18:07,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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 00:18:07,334 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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 00:18:07,334 INFO L185 Difference]: Start difference. First operand has 35 places, 30 transitions, 197 flow. Second operand 5 states and 123 transitions. [2021-03-25 00:18:07,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 281 flow [2021-03-25 00:18:07,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 233 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-25 00:18:07,342 INFO L241 Difference]: Finished difference. Result has 36 places, 29 transitions, 181 flow [2021-03-25 00:18:07,342 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=181, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2021-03-25 00:18:07,342 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2021-03-25 00:18:07,343 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 181 flow [2021-03-25 00:18:07,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 00:18:07,344 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:07,346 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:07,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 00:18:07,346 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:07,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:07,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1976769245, now seen corresponding path program 5 times [2021-03-25 00:18:07,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:07,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072076959] [2021-03-25 00:18:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:07,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:07,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:18:07,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:07,411 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 00:18:07,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072076959] [2021-03-25 00:18:07,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:07,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:18:07,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804516652] [2021-03-25 00:18:07,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:07,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:07,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:07,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:07,418 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 39 [2021-03-25 00:18:07,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 00:18:07,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:07,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 39 [2021-03-25 00:18:07,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:07,495 INFO L129 PetriNetUnfolder]: 21/75 cut-off events. [2021-03-25 00:18:07,495 INFO L130 PetriNetUnfolder]: For 149/153 co-relation queries the response was YES. [2021-03-25 00:18:07,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 75 events. 21/75 cut-off events. For 149/153 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 257 event pairs, 2 based on Foata normal form. 7/82 useless extension candidates. Maximal degree in co-relation 235. Up to 33 conditions per place. [2021-03-25 00:18:07,498 INFO L132 encePairwiseOnDemand]: 31/39 looper letters, 12 selfloop transitions, 20 changer transitions 1/40 dead transitions. [2021-03-25 00:18:07,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 307 flow [2021-03-25 00:18:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:18:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:18:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2021-03-25 00:18:07,500 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6196581196581197 [2021-03-25 00:18:07,500 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 145 transitions. [2021-03-25 00:18:07,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 145 transitions. [2021-03-25 00:18:07,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:07,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 145 transitions. [2021-03-25 00:18:07,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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 00:18:07,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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 00:18:07,502 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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 00:18:07,502 INFO L185 Difference]: Start difference. First operand has 36 places, 29 transitions, 181 flow. Second operand 6 states and 145 transitions. [2021-03-25 00:18:07,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 307 flow [2021-03-25 00:18:07,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 282 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 00:18:07,505 INFO L241 Difference]: Finished difference. Result has 39 places, 34 transitions, 250 flow [2021-03-25 00:18:07,505 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2021-03-25 00:18:07,505 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2021-03-25 00:18:07,505 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 250 flow [2021-03-25 00:18:07,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 00:18:07,506 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:07,506 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:07,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 00:18:07,506 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:07,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:07,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1563555881, now seen corresponding path program 6 times [2021-03-25 00:18:07,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:07,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982160115] [2021-03-25 00:18:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:07,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:07,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:07,568 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 00:18:07,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982160115] [2021-03-25 00:18:07,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:07,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:07,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948117505] [2021-03-25 00:18:07,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:07,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:07,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:07,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:07,570 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 39 [2021-03-25 00:18:07,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 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 00:18:07,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:07,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 39 [2021-03-25 00:18:07,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:07,709 INFO L129 PetriNetUnfolder]: 17/84 cut-off events. [2021-03-25 00:18:07,710 INFO L130 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2021-03-25 00:18:07,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 84 events. 17/84 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 351 event pairs, 4 based on Foata normal form. 6/90 useless extension candidates. Maximal degree in co-relation 242. Up to 30 conditions per place. [2021-03-25 00:18:07,711 INFO L132 encePairwiseOnDemand]: 31/39 looper letters, 16 selfloop transitions, 17 changer transitions 12/52 dead transitions. [2021-03-25 00:18:07,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 471 flow [2021-03-25 00:18:07,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:18:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:18:07,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2021-03-25 00:18:07,712 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.625 [2021-03-25 00:18:07,713 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 195 transitions. [2021-03-25 00:18:07,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 195 transitions. [2021-03-25 00:18:07,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:07,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 195 transitions. [2021-03-25 00:18:07,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.375) internal successors, (195), 8 states have internal predecessors, (195), 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 00:18:07,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 39.0) internal successors, (351), 9 states have internal predecessors, (351), 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 00:18:07,714 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 39.0) internal successors, (351), 9 states have internal predecessors, (351), 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 00:18:07,714 INFO L185 Difference]: Start difference. First operand has 39 places, 34 transitions, 250 flow. Second operand 8 states and 195 transitions. [2021-03-25 00:18:07,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 471 flow [2021-03-25 00:18:07,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 407 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-03-25 00:18:07,719 INFO L241 Difference]: Finished difference. Result has 45 places, 35 transitions, 288 flow [2021-03-25 00:18:07,719 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2021-03-25 00:18:07,719 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2021-03-25 00:18:07,719 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 288 flow [2021-03-25 00:18:07,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 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 00:18:07,720 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:07,720 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:07,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 00:18:07,720 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:07,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:07,720 INFO L82 PathProgramCache]: Analyzing trace with hash -347769309, now seen corresponding path program 7 times [2021-03-25 00:18:07,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:07,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659627715] [2021-03-25 00:18:07,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:07,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:07,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:18:07,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:07,776 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 00:18:07,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659627715] [2021-03-25 00:18:07,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:07,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:18:07,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282456543] [2021-03-25 00:18:07,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:07,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:07,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:07,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:07,779 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 39 [2021-03-25 00:18:07,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 00:18:07,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:07,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 39 [2021-03-25 00:18:07,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:07,843 INFO L129 PetriNetUnfolder]: 12/59 cut-off events. [2021-03-25 00:18:07,843 INFO L130 PetriNetUnfolder]: For 285/290 co-relation queries the response was YES. [2021-03-25 00:18:07,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 59 events. 12/59 cut-off events. For 285/290 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 179 event pairs, 5 based on Foata normal form. 7/66 useless extension candidates. Maximal degree in co-relation 217. Up to 26 conditions per place. [2021-03-25 00:18:07,844 INFO L132 encePairwiseOnDemand]: 31/39 looper letters, 8 selfloop transitions, 19 changer transitions 3/37 dead transitions. [2021-03-25 00:18:07,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 37 transitions, 364 flow [2021-03-25 00:18:07,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:18:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:18:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2021-03-25 00:18:07,845 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6068376068376068 [2021-03-25 00:18:07,846 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 142 transitions. [2021-03-25 00:18:07,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 142 transitions. [2021-03-25 00:18:07,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:07,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 142 transitions. [2021-03-25 00:18:07,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 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 00:18:07,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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 00:18:07,848 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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 00:18:07,848 INFO L185 Difference]: Start difference. First operand has 45 places, 35 transitions, 288 flow. Second operand 6 states and 142 transitions. [2021-03-25 00:18:07,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 37 transitions, 364 flow [2021-03-25 00:18:07,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 329 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-25 00:18:07,853 INFO L241 Difference]: Finished difference. Result has 44 places, 32 transitions, 276 flow [2021-03-25 00:18:07,853 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2021-03-25 00:18:07,853 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2021-03-25 00:18:07,853 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 276 flow [2021-03-25 00:18:07,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 00:18:07,854 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:07,854 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:07,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 00:18:07,854 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:07,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:07,854 INFO L82 PathProgramCache]: Analyzing trace with hash 478550371, now seen corresponding path program 8 times [2021-03-25 00:18:07,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:07,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062055908] [2021-03-25 00:18:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:07,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:07,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:07,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:07,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:07,923 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 00:18:07,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062055908] [2021-03-25 00:18:07,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:07,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:07,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254585398] [2021-03-25 00:18:07,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:07,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:07,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:07,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:07,925 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 39 [2021-03-25 00:18:07,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 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 00:18:07,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:07,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 39 [2021-03-25 00:18:07,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:08,003 INFO L129 PetriNetUnfolder]: 7/45 cut-off events. [2021-03-25 00:18:08,004 INFO L130 PetriNetUnfolder]: For 205/208 co-relation queries the response was YES. [2021-03-25 00:18:08,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 45 events. 7/45 cut-off events. For 205/208 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 105 event pairs, 1 based on Foata normal form. 7/52 useless extension candidates. Maximal degree in co-relation 157. Up to 16 conditions per place. [2021-03-25 00:18:08,005 INFO L132 encePairwiseOnDemand]: 31/39 looper letters, 11 selfloop transitions, 10 changer transitions 7/35 dead transitions. [2021-03-25 00:18:08,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 35 transitions, 341 flow [2021-03-25 00:18:08,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:18:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:18:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2021-03-25 00:18:08,006 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5993589743589743 [2021-03-25 00:18:08,006 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 187 transitions. [2021-03-25 00:18:08,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 187 transitions. [2021-03-25 00:18:08,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:08,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 187 transitions. [2021-03-25 00:18:08,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 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 00:18:08,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 39.0) internal successors, (351), 9 states have internal predecessors, (351), 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 00:18:08,009 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 39.0) internal successors, (351), 9 states have internal predecessors, (351), 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 00:18:08,009 INFO L185 Difference]: Start difference. First operand has 44 places, 32 transitions, 276 flow. Second operand 8 states and 187 transitions. [2021-03-25 00:18:08,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 35 transitions, 341 flow [2021-03-25 00:18:08,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 294 flow, removed 2 selfloop flow, removed 7 redundant places. [2021-03-25 00:18:08,011 INFO L241 Difference]: Finished difference. Result has 46 places, 25 transitions, 184 flow [2021-03-25 00:18:08,011 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=184, PETRI_PLACES=46, PETRI_TRANSITIONS=25} [2021-03-25 00:18:08,011 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2021-03-25 00:18:08,011 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 25 transitions, 184 flow [2021-03-25 00:18:08,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 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 00:18:08,012 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:08,012 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:08,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 00:18:08,012 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:08,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:08,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1543310303, now seen corresponding path program 9 times [2021-03-25 00:18:08,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:08,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288766260] [2021-03-25 00:18:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:08,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:08,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:08,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:08,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:08,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:08,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:08,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:08,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:08,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:08,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:08,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:08,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:08,065 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 00:18:08,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288766260] [2021-03-25 00:18:08,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:08,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:08,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032880391] [2021-03-25 00:18:08,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:08,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:08,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:08,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:08,067 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 39 [2021-03-25 00:18:08,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 25 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 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 00:18:08,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:08,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 39 [2021-03-25 00:18:08,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:08,126 INFO L129 PetriNetUnfolder]: 4/31 cut-off events. [2021-03-25 00:18:08,126 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2021-03-25 00:18:08,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 31 events. 4/31 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 1 based on Foata normal form. 2/33 useless extension candidates. Maximal degree in co-relation 102. Up to 10 conditions per place. [2021-03-25 00:18:08,127 INFO L132 encePairwiseOnDemand]: 33/39 looper letters, 6 selfloop transitions, 3 changer transitions 10/26 dead transitions. [2021-03-25 00:18:08,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 26 transitions, 219 flow [2021-03-25 00:18:08,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:18:08,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:18:08,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2021-03-25 00:18:08,128 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5801282051282052 [2021-03-25 00:18:08,128 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 181 transitions. [2021-03-25 00:18:08,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 181 transitions. [2021-03-25 00:18:08,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:08,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 181 transitions. [2021-03-25 00:18:08,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 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 00:18:08,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 39.0) internal successors, (351), 9 states have internal predecessors, (351), 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 00:18:08,130 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 39.0) internal successors, (351), 9 states have internal predecessors, (351), 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 00:18:08,130 INFO L185 Difference]: Start difference. First operand has 46 places, 25 transitions, 184 flow. Second operand 8 states and 181 transitions. [2021-03-25 00:18:08,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 26 transitions, 219 flow [2021-03-25 00:18:08,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 26 transitions, 177 flow, removed 11 selfloop flow, removed 9 redundant places. [2021-03-25 00:18:08,131 INFO L241 Difference]: Finished difference. Result has 40 places, 16 transitions, 82 flow [2021-03-25 00:18:08,131 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=82, PETRI_PLACES=40, PETRI_TRANSITIONS=16} [2021-03-25 00:18:08,132 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2021-03-25 00:18:08,132 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 16 transitions, 82 flow [2021-03-25 00:18:08,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 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 00:18:08,132 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:08,132 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:08,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 00:18:08,132 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:08,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1380565715, now seen corresponding path program 10 times [2021-03-25 00:18:08,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:08,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308321095] [2021-03-25 00:18:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:08,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:08,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:08,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:08,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:08,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:08,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:18:08,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:08,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:08,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:08,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:08,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:08,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:08,163 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 00:18:08,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308321095] [2021-03-25 00:18:08,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:08,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:18:08,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416049596] [2021-03-25 00:18:08,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:08,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:08,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:08,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:08,164 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 39 [2021-03-25 00:18:08,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 16 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 00:18:08,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:08,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 39 [2021-03-25 00:18:08,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:08,185 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-03-25 00:18:08,185 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-03-25 00:18:08,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 12 events. 1/12 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2021-03-25 00:18:08,185 INFO L132 encePairwiseOnDemand]: 33/39 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2021-03-25 00:18:08,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 11 transitions, 80 flow [2021-03-25 00:18:08,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:18:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:18:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2021-03-25 00:18:08,186 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2021-03-25 00:18:08,186 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 129 transitions. [2021-03-25 00:18:08,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 129 transitions. [2021-03-25 00:18:08,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:08,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 129 transitions. [2021-03-25 00:18:08,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 00:18:08,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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 00:18:08,188 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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 00:18:08,188 INFO L185 Difference]: Start difference. First operand has 40 places, 16 transitions, 82 flow. Second operand 6 states and 129 transitions. [2021-03-25 00:18:08,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 11 transitions, 80 flow [2021-03-25 00:18:08,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 11 transitions, 53 flow, removed 3 selfloop flow, removed 11 redundant places. [2021-03-25 00:18:08,188 INFO L241 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2021-03-25 00:18:08,188 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2021-03-25 00:18:08,189 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -4 predicate places. [2021-03-25 00:18:08,189 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2021-03-25 00:18:08,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 00:18:08,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 00:18:08,192 INFO L202 PluginConnector]: Adding new model ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 12:18:08 BasicIcfg [2021-03-25 00:18:08,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 00:18:08,192 INFO L168 Benchmark]: Toolchain (without parser) took 2684.28 ms. Allocated memory was 255.9 MB in the beginning and 335.5 MB in the end (delta: 79.7 MB). Free memory was 236.5 MB in the beginning and 224.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 92.4 MB. Max. memory is 16.0 GB. [2021-03-25 00:18:08,201 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:18:08,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.26 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 234.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 00:18:08,201 INFO L168 Benchmark]: Boogie Preprocessor took 14.49 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 234.0 MB in the end (delta: 902.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:18:08,201 INFO L168 Benchmark]: RCFGBuilder took 283.83 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 238.3 MB in the end (delta: -4.3 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.0 GB. [2021-03-25 00:18:08,202 INFO L168 Benchmark]: TraceAbstraction took 2359.24 ms. Allocated memory was 255.9 MB in the beginning and 335.5 MB in the end (delta: 79.7 MB). Free memory was 237.6 MB in the beginning and 224.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 91.5 MB. Max. memory is 16.0 GB. [2021-03-25 00:18:08,203 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 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.26 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 234.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.49 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 234.0 MB in the end (delta: 902.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 283.83 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 238.3 MB in the end (delta: -4.3 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2359.24 ms. Allocated memory was 255.9 MB in the beginning and 335.5 MB in the end (delta: 79.7 MB). Free memory was 237.6 MB in the beginning and 224.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 91.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 620.0ms, 35 PlacesBefore, 26 PlacesAfterwards, 25 TransitionsBefore, 16 TransitionsAfterwards, 234 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 375 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 186, positive: 158, positive conditional: 0, positive unconditional: 158, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 146, positive: 126, positive conditional: 0, positive unconditional: 126, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 146, positive: 126, positive conditional: 0, positive unconditional: 126, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 146, positive: 112, positive conditional: 0, positive unconditional: 112, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 34, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 179, positive: 57, positive conditional: 0, positive unconditional: 57, negative: 121, negative conditional: 0, negative unconditional: 121, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 186, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 146, unknown conditional: 0, unknown unconditional: 146] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - PositiveResult [Line: 65]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2289.6ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 843.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 692.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 43 SDslu, 5 SDs, 0 SdLazy, 520 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 298.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 253.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=6, InterpolantAutomatonStates: 62, 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: 15.1ms SsaConstructionTime, 130.8ms SatisfiabilityAnalysisTime, 429.8ms InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 435 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...