/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/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 00:03:43,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 00:03:43,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 00:03:43,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 00:03:43,663 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 00:03:43,696 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 00:03:43,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 00:03:43,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 00:03:43,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 00:03:43,699 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 00:03:43,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 00:03:43,699 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 00:03:43,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 00:03:43,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 00:03:43,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 00:03:43,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 00:03:43,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 00:03:43,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 00:03:43,701 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 00:03:43,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 00:03:43,701 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 00:03:43,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 00:03:43,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 00:03:43,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 00:03:43,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 00:03:43,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 00:03:43,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:03:43,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 00:03:43,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 00:03:43,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 00:03:43,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 00:03:43,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 00:03:43,703 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 00:03:43,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 00:03:44,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 00:03:44,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 00:03:44,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 00:03:44,042 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 00:03:44,043 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 00:03:44,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-03-25 00:03:44,044 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-03-25 00:03:44,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 00:03:44,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 00:03:44,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 00:03:44,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 00:03:44,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 00:03:44,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:44" (1/1) ... [2021-03-25 00:03:44,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:44" (1/1) ... [2021-03-25 00:03:44,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 00:03:44,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 00:03:44,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 00:03:44,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 00:03:44,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:44" (1/1) ... [2021-03-25 00:03:44,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:44" (1/1) ... [2021-03-25 00:03:44,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:44" (1/1) ... [2021-03-25 00:03:44,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:44" (1/1) ... [2021-03-25 00:03:44,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:44" (1/1) ... [2021-03-25 00:03:44,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:44" (1/1) ... [2021-03-25 00:03:44,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:44" (1/1) ... [2021-03-25 00:03:44,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 00:03:44,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 00:03:44,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 00:03:44,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 00:03:44,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:44" (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 00:03:44,209 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 00:03:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 00:03:44,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 00:03:44,210 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 00:03:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 00:03:44,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 00:03:44,210 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 00:03:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 00:03:44,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 00:03:44,210 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 00:03:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 00:03:44,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 00:03:44,211 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-25 00:03:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-25 00:03:44,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-25 00:03:44,211 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-25 00:03:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-25 00:03:44,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-25 00:03:44,212 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-25 00:03:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-25 00:03:44,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-25 00:03:44,213 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 00:03:44,357 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 00:03:44,357 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 00:03:44,358 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:03:44 BoogieIcfgContainer [2021-03-25 00:03:44,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 00:03:44,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 00:03:44,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 00:03:44,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 00:03:44,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:44" (1/2) ... [2021-03-25 00:03:44,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ea3265 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:03:44, skipping insertion in model container [2021-03-25 00:03:44,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:03:44" (2/2) ... [2021-03-25 00:03:44,364 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-03-25 00:03:44,369 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 00:03:44,372 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 00:03:44,372 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 00:03:44,475 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-03-25 00:03:44,505 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-03-25 00:03:44,539 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 00:03:44,540 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 00:03:44,540 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 00:03:44,540 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 00:03:44,540 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 00:03:44,540 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 00:03:44,540 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 00:03:44,540 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 00:03:44,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 65 transitions, 202 flow [2021-03-25 00:03:44,587 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-03-25 00:03:44,587 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 00:03:44,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 53 events. 4/53 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-03-25 00:03:44,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 65 transitions, 202 flow [2021-03-25 00:03:44,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 51 transitions, 150 flow [2021-03-25 00:03:44,598 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 00:03:44,611 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 51 transitions, 150 flow [2021-03-25 00:03:44,614 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 51 transitions, 150 flow [2021-03-25 00:03:44,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 51 transitions, 150 flow [2021-03-25 00:03:44,632 INFO L129 PetriNetUnfolder]: 4/51 cut-off events. [2021-03-25 00:03:44,633 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 00:03:44,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 51 events. 4/51 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-03-25 00:03:44,637 INFO L142 LiptonReduction]: Number of co-enabled transitions 1336 [2021-03-25 00:03:45,032 INFO L154 LiptonReduction]: Checked pairs total: 1358 [2021-03-25 00:03:45,032 INFO L156 LiptonReduction]: Total number of compositions: 13 [2021-03-25 00:03:45,034 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 437 [2021-03-25 00:03:45,071 INFO L129 PetriNetUnfolder]: 4/37 cut-off events. [2021-03-25 00:03:45,072 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 00:03:45,072 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:45,073 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:03:45,073 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:03:45,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:45,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1729675932, now seen corresponding path program 1 times [2021-03-25 00:03:45,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:45,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344222346] [2021-03-25 00:03:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:45,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:45,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:03:45,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:45,231 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 00:03:45,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344222346] [2021-03-25 00:03:45,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:45,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:03:45,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820955310] [2021-03-25 00:03:45,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 00:03:45,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:45,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 00:03:45,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 00:03:45,262 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2021-03-25 00:03:45,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 00:03:45,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:45,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2021-03-25 00:03:45,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:45,285 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-03-25 00:03:45,285 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 00:03:45,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 43 events. 6/43 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 1 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2021-03-25 00:03:45,287 INFO L132 encePairwiseOnDemand]: 79/82 looper letters, 2 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2021-03-25 00:03:45,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 38 transitions, 132 flow [2021-03-25 00:03:45,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 00:03:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 00:03:45,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-03-25 00:03:45,298 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9227642276422764 [2021-03-25 00:03:45,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-03-25 00:03:45,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-03-25 00:03:45,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:45,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-03-25 00:03:45,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 00:03:45,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 00:03:45,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 00:03:45,311 INFO L185 Difference]: Start difference. First operand has 53 places, 38 transitions, 124 flow. Second operand 3 states and 227 transitions. [2021-03-25 00:03:45,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 38 transitions, 132 flow [2021-03-25 00:03:45,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 97 flow, removed 0 selfloop flow, removed 13 redundant places. [2021-03-25 00:03:45,316 INFO L241 Difference]: Finished difference. Result has 43 places, 38 transitions, 97 flow [2021-03-25 00:03:45,317 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2021-03-25 00:03:45,318 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2021-03-25 00:03:45,318 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 97 flow [2021-03-25 00:03:45,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 00:03:45,318 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:45,319 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:03:45,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 00:03:45,319 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:03:45,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:45,320 INFO L82 PathProgramCache]: Analyzing trace with hash 2133907847, now seen corresponding path program 1 times [2021-03-25 00:03:45,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:45,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143580431] [2021-03-25 00:03:45,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:45,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:45,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:03:45,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:45,363 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 00:03:45,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143580431] [2021-03-25 00:03:45,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:45,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:03:45,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699611071] [2021-03-25 00:03:45,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 00:03:45,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:45,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 00:03:45,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 00:03:45,369 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2021-03-25 00:03:45,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 00:03:45,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:45,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2021-03-25 00:03:45,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:45,389 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-03-25 00:03:45,389 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 00:03:45,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 43 events. 6/43 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 1 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2021-03-25 00:03:45,393 INFO L132 encePairwiseOnDemand]: 79/82 looper letters, 2 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2021-03-25 00:03:45,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 105 flow [2021-03-25 00:03:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 00:03:45,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 00:03:45,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-03-25 00:03:45,405 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9227642276422764 [2021-03-25 00:03:45,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-03-25 00:03:45,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-03-25 00:03:45,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:45,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-03-25 00:03:45,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 00:03:45,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 00:03:45,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 00:03:45,410 INFO L185 Difference]: Start difference. First operand has 43 places, 38 transitions, 97 flow. Second operand 3 states and 227 transitions. [2021-03-25 00:03:45,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 105 flow [2021-03-25 00:03:45,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 101 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:03:45,412 INFO L241 Difference]: Finished difference. Result has 44 places, 38 transitions, 101 flow [2021-03-25 00:03:45,412 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2021-03-25 00:03:45,413 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2021-03-25 00:03:45,413 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 101 flow [2021-03-25 00:03:45,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 00:03:45,413 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:45,413 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:03:45,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 00:03:45,413 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:03:45,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:45,414 INFO L82 PathProgramCache]: Analyzing trace with hash -795821729, now seen corresponding path program 1 times [2021-03-25 00:03:45,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:45,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821413744] [2021-03-25 00:03:45,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:45,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:45,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:45,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:45,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:45,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:45,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:45,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:45,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:45,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:45,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:45,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:45,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:45,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:45,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:45,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:45,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:45,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:45,897 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:03:45,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:03:45,928 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:03:45,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:45,933 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 00:03:45,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821413744] [2021-03-25 00:03:45,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:45,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 00:03:45,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827016238] [2021-03-25 00:03:45,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 00:03:45,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:45,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 00:03:45,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-25 00:03:45,939 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:03:45,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 101 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:03:45,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:45,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:03:45,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:48,003 INFO L129 PetriNetUnfolder]: 1326/2128 cut-off events. [2021-03-25 00:03:48,004 INFO L130 PetriNetUnfolder]: For 329/329 co-relation queries the response was YES. [2021-03-25 00:03:48,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 2128 events. 1326/2128 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10419 event pairs, 586 based on Foata normal form. 1/1993 useless extension candidates. Maximal degree in co-relation 4391. Up to 1515 conditions per place. [2021-03-25 00:03:48,020 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 77 selfloop transitions, 127 changer transitions 0/222 dead transitions. [2021-03-25 00:03:48,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 222 transitions, 1018 flow [2021-03-25 00:03:48,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-25 00:03:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-03-25 00:03:48,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2077 transitions. [2021-03-25 00:03:48,026 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6494684177611006 [2021-03-25 00:03:48,026 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2077 transitions. [2021-03-25 00:03:48,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2077 transitions. [2021-03-25 00:03:48,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:48,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2077 transitions. [2021-03-25 00:03:48,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.256410256410255) internal successors, (2077), 39 states have internal predecessors, (2077), 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 00:03:48,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 82.0) internal successors, (3280), 40 states have internal predecessors, (3280), 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 00:03:48,040 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 82.0) internal successors, (3280), 40 states have internal predecessors, (3280), 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 00:03:48,040 INFO L185 Difference]: Start difference. First operand has 44 places, 38 transitions, 101 flow. Second operand 39 states and 2077 transitions. [2021-03-25 00:03:48,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 222 transitions, 1018 flow [2021-03-25 00:03:48,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 222 transitions, 942 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:03:48,047 INFO L241 Difference]: Finished difference. Result has 100 places, 166 transitions, 826 flow [2021-03-25 00:03:48,047 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=826, PETRI_PLACES=100, PETRI_TRANSITIONS=166} [2021-03-25 00:03:48,047 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2021-03-25 00:03:48,047 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 166 transitions, 826 flow [2021-03-25 00:03:48,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:03:48,048 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:48,048 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:03:48,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 00:03:48,048 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:03:48,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:48,049 INFO L82 PathProgramCache]: Analyzing trace with hash 318124037, now seen corresponding path program 2 times [2021-03-25 00:03:48,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:48,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201686964] [2021-03-25 00:03:48,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:48,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:48,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:03:48,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:48,070 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 00:03:48,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201686964] [2021-03-25 00:03:48,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:48,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:03:48,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736185732] [2021-03-25 00:03:48,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 00:03:48,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:48,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 00:03:48,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 00:03:48,072 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2021-03-25 00:03:48,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 166 transitions, 826 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 00:03:48,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:48,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2021-03-25 00:03:48,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:48,179 INFO L129 PetriNetUnfolder]: 480/986 cut-off events. [2021-03-25 00:03:48,180 INFO L130 PetriNetUnfolder]: For 911/916 co-relation queries the response was YES. [2021-03-25 00:03:48,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2440 conditions, 986 events. 480/986 cut-off events. For 911/916 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5444 event pairs, 198 based on Foata normal form. 27/857 useless extension candidates. Maximal degree in co-relation 2404. Up to 557 conditions per place. [2021-03-25 00:03:48,193 INFO L132 encePairwiseOnDemand]: 79/82 looper letters, 7 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2021-03-25 00:03:48,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 145 transitions, 805 flow [2021-03-25 00:03:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 00:03:48,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 00:03:48,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-03-25 00:03:48,194 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9227642276422764 [2021-03-25 00:03:48,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-03-25 00:03:48,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-03-25 00:03:48,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:48,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-03-25 00:03:48,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 00:03:48,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 00:03:48,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 00:03:48,196 INFO L185 Difference]: Start difference. First operand has 100 places, 166 transitions, 826 flow. Second operand 3 states and 227 transitions. [2021-03-25 00:03:48,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 145 transitions, 805 flow [2021-03-25 00:03:48,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 145 transitions, 790 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 00:03:48,213 INFO L241 Difference]: Finished difference. Result has 98 places, 145 transitions, 809 flow [2021-03-25 00:03:48,213 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=809, PETRI_PLACES=98, PETRI_TRANSITIONS=145} [2021-03-25 00:03:48,213 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2021-03-25 00:03:48,214 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 145 transitions, 809 flow [2021-03-25 00:03:48,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 00:03:48,214 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:48,214 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:03:48,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 00:03:48,214 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:03:48,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:48,215 INFO L82 PathProgramCache]: Analyzing trace with hash 414070021, now seen corresponding path program 3 times [2021-03-25 00:03:48,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:48,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387306199] [2021-03-25 00:03:48,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:48,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:48,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:03:48,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:48,292 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 00:03:48,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387306199] [2021-03-25 00:03:48,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:48,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:03:48,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055335492] [2021-03-25 00:03:48,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 00:03:48,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:48,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 00:03:48,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 00:03:48,294 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2021-03-25 00:03:48,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 145 transitions, 809 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 00:03:48,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:48,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2021-03-25 00:03:48,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:48,387 INFO L129 PetriNetUnfolder]: 419/859 cut-off events. [2021-03-25 00:03:48,387 INFO L130 PetriNetUnfolder]: For 1014/1028 co-relation queries the response was YES. [2021-03-25 00:03:48,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 859 events. 419/859 cut-off events. For 1014/1028 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4525 event pairs, 160 based on Foata normal form. 11/724 useless extension candidates. Maximal degree in co-relation 2129. Up to 452 conditions per place. [2021-03-25 00:03:48,400 INFO L132 encePairwiseOnDemand]: 79/82 looper letters, 12 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2021-03-25 00:03:48,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 145 transitions, 841 flow [2021-03-25 00:03:48,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 00:03:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 00:03:48,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-03-25 00:03:48,402 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9227642276422764 [2021-03-25 00:03:48,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-03-25 00:03:48,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-03-25 00:03:48,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:48,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-03-25 00:03:48,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 00:03:48,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 00:03:48,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 00:03:48,404 INFO L185 Difference]: Start difference. First operand has 98 places, 145 transitions, 809 flow. Second operand 3 states and 227 transitions. [2021-03-25 00:03:48,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 145 transitions, 841 flow [2021-03-25 00:03:48,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 145 transitions, 783 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:03:48,414 INFO L241 Difference]: Finished difference. Result has 99 places, 145 transitions, 765 flow [2021-03-25 00:03:48,414 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=765, PETRI_PLACES=99, PETRI_TRANSITIONS=145} [2021-03-25 00:03:48,414 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2021-03-25 00:03:48,414 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 145 transitions, 765 flow [2021-03-25 00:03:48,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 00:03:48,415 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:48,415 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:03:48,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 00:03:48,415 INFO L428 AbstractCegarLoop]: === Iteration 6 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:03:48,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:48,415 INFO L82 PathProgramCache]: Analyzing trace with hash -2115111695, now seen corresponding path program 4 times [2021-03-25 00:03:48,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:48,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522728713] [2021-03-25 00:03:48,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:48,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:48,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:48,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:48,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:48,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:48,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:48,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:48,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:48,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:48,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:48,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:48,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:03:48,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:48,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:48,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:48,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:48,712 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-25 00:03:48,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 00:03:48,741 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-25 00:03:48,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:03:48,772 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:03:48,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:48,775 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 00:03:48,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522728713] [2021-03-25 00:03:48,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:48,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:03:48,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002870486] [2021-03-25 00:03:48,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:03:48,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:48,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:03:48,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:03:48,783 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:03:48,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 145 transitions, 765 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:03:48,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:48,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:03:48,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:51,335 INFO L129 PetriNetUnfolder]: 1292/2118 cut-off events. [2021-03-25 00:03:51,335 INFO L130 PetriNetUnfolder]: For 6373/6375 co-relation queries the response was YES. [2021-03-25 00:03:51,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8184 conditions, 2118 events. 1292/2118 cut-off events. For 6373/6375 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10354 event pairs, 248 based on Foata normal form. 3/1981 useless extension candidates. Maximal degree in co-relation 8137. Up to 1248 conditions per place. [2021-03-25 00:03:51,356 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 182 selfloop transitions, 212 changer transitions 1/413 dead transitions. [2021-03-25 00:03:51,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 413 transitions, 3245 flow [2021-03-25 00:03:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-25 00:03:51,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-03-25 00:03:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2791 transitions. [2021-03-25 00:03:51,363 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6545497185741088 [2021-03-25 00:03:51,363 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 2791 transitions. [2021-03-25 00:03:51,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 2791 transitions. [2021-03-25 00:03:51,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:51,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 2791 transitions. [2021-03-25 00:03:51,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 53.67307692307692) internal successors, (2791), 52 states have internal predecessors, (2791), 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 00:03:51,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 82.0) internal successors, (4346), 53 states have internal predecessors, (4346), 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 00:03:51,376 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 82.0) internal successors, (4346), 53 states have internal predecessors, (4346), 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 00:03:51,376 INFO L185 Difference]: Start difference. First operand has 99 places, 145 transitions, 765 flow. Second operand 52 states and 2791 transitions. [2021-03-25 00:03:51,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 413 transitions, 3245 flow [2021-03-25 00:03:51,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 413 transitions, 3187 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:03:51,395 INFO L241 Difference]: Finished difference. Result has 177 places, 329 transitions, 2519 flow [2021-03-25 00:03:51,395 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2519, PETRI_PLACES=177, PETRI_TRANSITIONS=329} [2021-03-25 00:03:51,396 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 124 predicate places. [2021-03-25 00:03:51,396 INFO L480 AbstractCegarLoop]: Abstraction has has 177 places, 329 transitions, 2519 flow [2021-03-25 00:03:51,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:03:51,396 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:51,396 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:03:51,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 00:03:51,396 INFO L428 AbstractCegarLoop]: === Iteration 7 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:03:51,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:51,397 INFO L82 PathProgramCache]: Analyzing trace with hash 347114567, now seen corresponding path program 5 times [2021-03-25 00:03:51,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:51,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793306791] [2021-03-25 00:03:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:51,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:51,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:51,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:51,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:51,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:51,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:51,494 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:03:51,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:51,503 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 00:03:51,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:51,512 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-03-25 00:03:51,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:51,527 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-03-25 00:03:51,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:51,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:51,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:51,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:51,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:51,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:51,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:51,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:51,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:51,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:51,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:51,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:51,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:51,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:51,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:51,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:51,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:51,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:51,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:51,721 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:03:51,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:03:51,747 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:03:51,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:51,750 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 00:03:51,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793306791] [2021-03-25 00:03:51,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:51,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-25 00:03:51,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822815751] [2021-03-25 00:03:51,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-25 00:03:51,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:51,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-25 00:03:51,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-25 00:03:51,753 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:03:51,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 329 transitions, 2519 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:03:51,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:51,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:03:51,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:56,446 INFO L129 PetriNetUnfolder]: 1834/3052 cut-off events. [2021-03-25 00:03:56,446 INFO L130 PetriNetUnfolder]: For 27960/27962 co-relation queries the response was YES. [2021-03-25 00:03:56,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17252 conditions, 3052 events. 1834/3052 cut-off events. For 27960/27962 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 16205 event pairs, 353 based on Foata normal form. 5/2845 useless extension candidates. Maximal degree in co-relation 17168. Up to 1911 conditions per place. [2021-03-25 00:03:56,489 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 378 selfloop transitions, 382 changer transitions 0/778 dead transitions. [2021-03-25 00:03:56,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 778 transitions, 9035 flow [2021-03-25 00:03:56,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-03-25 00:03:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-03-25 00:03:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 4577 transitions. [2021-03-25 00:03:56,502 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6415755536865714 [2021-03-25 00:03:56,503 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 4577 transitions. [2021-03-25 00:03:56,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 4577 transitions. [2021-03-25 00:03:56,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:56,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 4577 transitions. [2021-03-25 00:03:56,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 52.60919540229885) internal successors, (4577), 87 states have internal predecessors, (4577), 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 00:03:56,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 82.0) internal successors, (7216), 88 states have internal predecessors, (7216), 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 00:03:56,529 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 82.0) internal successors, (7216), 88 states have internal predecessors, (7216), 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 00:03:56,529 INFO L185 Difference]: Start difference. First operand has 177 places, 329 transitions, 2519 flow. Second operand 87 states and 4577 transitions. [2021-03-25 00:03:56,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 778 transitions, 9035 flow [2021-03-25 00:03:56,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 778 transitions, 7978 flow, removed 463 selfloop flow, removed 4 redundant places. [2021-03-25 00:03:56,687 INFO L241 Difference]: Finished difference. Result has 282 places, 732 transitions, 7220 flow [2021-03-25 00:03:56,688 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2128, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=7220, PETRI_PLACES=282, PETRI_TRANSITIONS=732} [2021-03-25 00:03:56,688 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 229 predicate places. [2021-03-25 00:03:56,688 INFO L480 AbstractCegarLoop]: Abstraction has has 282 places, 732 transitions, 7220 flow [2021-03-25 00:03:56,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:03:56,689 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:56,689 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:03:56,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 00:03:56,689 INFO L428 AbstractCegarLoop]: === Iteration 8 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:03:56,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:56,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1620631605, now seen corresponding path program 6 times [2021-03-25 00:03:56,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:56,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279774209] [2021-03-25 00:03:56,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:56,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:56,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:56,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:56,764 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:03:56,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:56,772 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 00:03:56,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:03:56,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:56,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:56,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:56,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:56,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:56,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:56,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:56,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:56,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:56,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:56,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:56,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:03:57,002 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:03:57,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:03:57,032 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:03:57,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:03:57,037 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 00:03:57,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279774209] [2021-03-25 00:03:57,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:57,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-25 00:03:57,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889347262] [2021-03-25 00:03:57,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-25 00:03:57,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:57,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-25 00:03:57,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-25 00:03:57,043 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:03:57,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 732 transitions, 7220 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:03:57,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:57,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:03:57,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:01,936 INFO L129 PetriNetUnfolder]: 2593/4333 cut-off events. [2021-03-25 00:04:01,937 INFO L130 PetriNetUnfolder]: For 65818/65871 co-relation queries the response was YES. [2021-03-25 00:04:01,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27593 conditions, 4333 events. 2593/4333 cut-off events. For 65818/65871 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 24493 event pairs, 323 based on Foata normal form. 26/4032 useless extension candidates. Maximal degree in co-relation 27434. Up to 2768 conditions per place. [2021-03-25 00:04:01,997 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 732 selfloop transitions, 542 changer transitions 5/1297 dead transitions. [2021-03-25 00:04:01,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 1297 transitions, 17100 flow [2021-03-25 00:04:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-03-25 00:04:01,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-03-25 00:04:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 5269 transitions. [2021-03-25 00:04:02,004 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6490514905149052 [2021-03-25 00:04:02,004 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 5269 transitions. [2021-03-25 00:04:02,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 5269 transitions. [2021-03-25 00:04:02,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:02,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 5269 transitions. [2021-03-25 00:04:02,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 53.22222222222222) internal successors, (5269), 99 states have internal predecessors, (5269), 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 00:04:02,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 82.0) internal successors, (8200), 100 states have internal predecessors, (8200), 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 00:04:02,023 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 82.0) internal successors, (8200), 100 states have internal predecessors, (8200), 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 00:04:02,023 INFO L185 Difference]: Start difference. First operand has 282 places, 732 transitions, 7220 flow. Second operand 99 states and 5269 transitions. [2021-03-25 00:04:02,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 1297 transitions, 17100 flow [2021-03-25 00:04:02,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 1297 transitions, 14857 flow, removed 1120 selfloop flow, removed 1 redundant places. [2021-03-25 00:04:02,349 INFO L241 Difference]: Finished difference. Result has 397 places, 1256 transitions, 13495 flow [2021-03-25 00:04:02,350 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=5015, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=13495, PETRI_PLACES=397, PETRI_TRANSITIONS=1256} [2021-03-25 00:04:02,350 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 344 predicate places. [2021-03-25 00:04:02,350 INFO L480 AbstractCegarLoop]: Abstraction has has 397 places, 1256 transitions, 13495 flow [2021-03-25 00:04:02,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:04:02,351 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:02,351 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:04:02,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 00:04:02,351 INFO L428 AbstractCegarLoop]: === Iteration 9 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:04:02,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:02,351 INFO L82 PathProgramCache]: Analyzing trace with hash -25157131, now seen corresponding path program 7 times [2021-03-25 00:04:02,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:02,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521267918] [2021-03-25 00:04:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:02,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:02,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:02,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:02,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:02,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:02,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:02,412 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:04:02,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:02,421 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 00:04:02,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:02,430 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-25 00:04:02,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:02,441 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-03-25 00:04:02,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:02,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:02,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:02,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:02,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:02,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:02,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:02,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:02,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:02,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:02,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:02,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:02,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:02,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:02,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:02,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:02,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:02,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:02,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:02,620 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:04:02,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:02,652 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:04:02,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:02,655 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 00:04:02,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521267918] [2021-03-25 00:04:02,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:02,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-25 00:04:02,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477443825] [2021-03-25 00:04:02,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-25 00:04:02,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:02,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-25 00:04:02,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-25 00:04:02,657 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:04:02,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 1256 transitions, 13495 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:04:02,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:02,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:04:02,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:02,991 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2021-03-25 00:04:07,169 INFO L129 PetriNetUnfolder]: 3104/5238 cut-off events. [2021-03-25 00:04:07,169 INFO L130 PetriNetUnfolder]: For 85640/85675 co-relation queries the response was YES. [2021-03-25 00:04:07,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34624 conditions, 5238 events. 3104/5238 cut-off events. For 85640/85675 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 31083 event pairs, 287 based on Foata normal form. 16/4828 useless extension candidates. Maximal degree in co-relation 34383. Up to 3532 conditions per place. [2021-03-25 00:04:07,246 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 1172 selfloop transitions, 537 changer transitions 0/1727 dead transitions. [2021-03-25 00:04:07,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 1727 transitions, 23785 flow [2021-03-25 00:04:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-03-25 00:04:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-03-25 00:04:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 4450 transitions. [2021-03-25 00:04:07,252 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6460511033681765 [2021-03-25 00:04:07,252 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 4450 transitions. [2021-03-25 00:04:07,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 4450 transitions. [2021-03-25 00:04:07,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:07,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 4450 transitions. [2021-03-25 00:04:07,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 52.976190476190474) internal successors, (4450), 84 states have internal predecessors, (4450), 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 00:04:07,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 82.0) internal successors, (6970), 85 states have internal predecessors, (6970), 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 00:04:07,430 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 82.0) internal successors, (6970), 85 states have internal predecessors, (6970), 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 00:04:07,430 INFO L185 Difference]: Start difference. First operand has 397 places, 1256 transitions, 13495 flow. Second operand 84 states and 4450 transitions. [2021-03-25 00:04:07,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 1727 transitions, 23785 flow [2021-03-25 00:04:08,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 1727 transitions, 19081 flow, removed 2349 selfloop flow, removed 1 redundant places. [2021-03-25 00:04:08,066 INFO L241 Difference]: Finished difference. Result has 493 places, 1699 transitions, 17040 flow [2021-03-25 00:04:08,067 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=8839, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1066, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=17040, PETRI_PLACES=493, PETRI_TRANSITIONS=1699} [2021-03-25 00:04:08,067 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 440 predicate places. [2021-03-25 00:04:08,067 INFO L480 AbstractCegarLoop]: Abstraction has has 493 places, 1699 transitions, 17040 flow [2021-03-25 00:04:08,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:04:08,068 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:08,068 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:04:08,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 00:04:08,068 INFO L428 AbstractCegarLoop]: === Iteration 10 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:04:08,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:08,069 INFO L82 PathProgramCache]: Analyzing trace with hash 736257217, now seen corresponding path program 8 times [2021-03-25 00:04:08,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:08,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302142574] [2021-03-25 00:04:08,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:08,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:08,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:08,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:08,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:08,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:08,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:08,129 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:04:08,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:08,137 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 00:04:08,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:08,145 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-25 00:04:08,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 00:04:08,158 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-25 00:04:08,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 00:04:08,173 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-25 00:04:08,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:04:08,188 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-25 00:04:08,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:04:08,204 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-25 00:04:08,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:04:08,221 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-25 00:04:08,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:04:08,240 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-25 00:04:08,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:04:08,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:08,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:08,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:08,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:08,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:08,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:08,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:08,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:08,365 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:04:08,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:08,388 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:04:08,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:08,390 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 00:04:08,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302142574] [2021-03-25 00:04:08,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:08,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-25 00:04:08,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591091282] [2021-03-25 00:04:08,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-25 00:04:08,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:08,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-25 00:04:08,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-03-25 00:04:08,393 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:04:08,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1699 transitions, 17040 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:04:08,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:08,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:04:08,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:11,302 INFO L129 PetriNetUnfolder]: 3479/5837 cut-off events. [2021-03-25 00:04:11,302 INFO L130 PetriNetUnfolder]: For 89728/89766 co-relation queries the response was YES. [2021-03-25 00:04:11,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38216 conditions, 5837 events. 3479/5837 cut-off events. For 89728/89766 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35132 event pairs, 376 based on Foata normal form. 18/5403 useless extension candidates. Maximal degree in co-relation 37926. Up to 4181 conditions per place. [2021-03-25 00:04:11,385 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 1588 selfloop transitions, 437 changer transitions 0/2043 dead transitions. [2021-03-25 00:04:11,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 2043 transitions, 26907 flow [2021-03-25 00:04:11,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-25 00:04:11,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-03-25 00:04:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2208 transitions. [2021-03-25 00:04:11,388 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6567519333729923 [2021-03-25 00:04:11,388 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2208 transitions. [2021-03-25 00:04:11,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2208 transitions. [2021-03-25 00:04:11,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:11,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2208 transitions. [2021-03-25 00:04:11,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 53.853658536585364) internal successors, (2208), 41 states have internal predecessors, (2208), 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 00:04:11,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 82.0) internal successors, (3444), 42 states have internal predecessors, (3444), 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 00:04:11,395 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 82.0) internal successors, (3444), 42 states have internal predecessors, (3444), 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 00:04:11,395 INFO L185 Difference]: Start difference. First operand has 493 places, 1699 transitions, 17040 flow. Second operand 41 states and 2208 transitions. [2021-03-25 00:04:11,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 2043 transitions, 26907 flow [2021-03-25 00:04:12,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 2043 transitions, 22018 flow, removed 2443 selfloop flow, removed 1 redundant places. [2021-03-25 00:04:12,244 INFO L241 Difference]: Finished difference. Result has 550 places, 1958 transitions, 18373 flow [2021-03-25 00:04:12,246 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=12679, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=18373, PETRI_PLACES=550, PETRI_TRANSITIONS=1958} [2021-03-25 00:04:12,246 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 497 predicate places. [2021-03-25 00:04:12,246 INFO L480 AbstractCegarLoop]: Abstraction has has 550 places, 1958 transitions, 18373 flow [2021-03-25 00:04:12,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:04:12,247 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:12,247 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:04:12,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 00:04:12,247 INFO L428 AbstractCegarLoop]: === Iteration 11 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:04:12,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:12,248 INFO L82 PathProgramCache]: Analyzing trace with hash -814640639, now seen corresponding path program 9 times [2021-03-25 00:04:12,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:12,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349151531] [2021-03-25 00:04:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:12,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:12,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:12,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:12,296 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:04:12,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:12,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:12,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:12,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:12,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:12,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:12,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:12,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:12,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:12,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:12,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:12,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:12,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:12,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:12,508 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:04:12,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:12,530 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:04:12,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:12,536 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 00:04:12,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349151531] [2021-03-25 00:04:12,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:12,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:04:12,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978825223] [2021-03-25 00:04:12,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:04:12,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:12,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:04:12,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:04:12,538 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:04:12,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 1958 transitions, 18373 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:04:12,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:12,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:04:12,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:16,159 INFO L129 PetriNetUnfolder]: 3807/6389 cut-off events. [2021-03-25 00:04:16,159 INFO L130 PetriNetUnfolder]: For 108712/108751 co-relation queries the response was YES. [2021-03-25 00:04:16,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42832 conditions, 6389 events. 3807/6389 cut-off events. For 108712/108751 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 39444 event pairs, 259 based on Foata normal form. 24/5939 useless extension candidates. Maximal degree in co-relation 42484. Up to 4607 conditions per place. [2021-03-25 00:04:16,286 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 1756 selfloop transitions, 493 changer transitions 0/2267 dead transitions. [2021-03-25 00:04:16,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 2267 transitions, 28200 flow [2021-03-25 00:04:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-03-25 00:04:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-03-25 00:04:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 3206 transitions. [2021-03-25 00:04:16,290 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6409436225509796 [2021-03-25 00:04:16,290 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 3206 transitions. [2021-03-25 00:04:16,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 3206 transitions. [2021-03-25 00:04:16,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:16,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 3206 transitions. [2021-03-25 00:04:16,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 52.557377049180324) internal successors, (3206), 61 states have internal predecessors, (3206), 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 00:04:16,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 82.0) internal successors, (5084), 62 states have internal predecessors, (5084), 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 00:04:16,300 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 82.0) internal successors, (5084), 62 states have internal predecessors, (5084), 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 00:04:16,300 INFO L185 Difference]: Start difference. First operand has 550 places, 1958 transitions, 18373 flow. Second operand 61 states and 3206 transitions. [2021-03-25 00:04:16,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 2267 transitions, 28200 flow [2021-03-25 00:04:17,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 2267 transitions, 26351 flow, removed 923 selfloop flow, removed 1 redundant places. [2021-03-25 00:04:17,602 INFO L241 Difference]: Finished difference. Result has 626 places, 2215 transitions, 22578 flow [2021-03-25 00:04:17,604 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=16556, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1958, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=22578, PETRI_PLACES=626, PETRI_TRANSITIONS=2215} [2021-03-25 00:04:17,604 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 573 predicate places. [2021-03-25 00:04:17,604 INFO L480 AbstractCegarLoop]: Abstraction has has 626 places, 2215 transitions, 22578 flow [2021-03-25 00:04:17,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:04:17,604 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:17,605 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:04:17,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 00:04:17,605 INFO L428 AbstractCegarLoop]: === Iteration 12 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:04:17,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:17,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1865859479, now seen corresponding path program 10 times [2021-03-25 00:04:17,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:17,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444329149] [2021-03-25 00:04:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:17,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:17,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:17,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:17,653 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:04:17,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:17,660 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 00:04:17,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:17,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:17,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:17,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:17,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:17,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:17,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:17,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:17,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:17,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:17,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:17,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:17,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:17,861 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:04:17,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:17,905 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:04:17,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:17,908 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 00:04:17,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444329149] [2021-03-25 00:04:17,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:17,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-25 00:04:17,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728098784] [2021-03-25 00:04:17,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-25 00:04:17,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:17,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-25 00:04:17,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-25 00:04:17,911 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:04:17,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 2215 transitions, 22578 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:04:17,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:17,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:04:17,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:22,293 INFO L129 PetriNetUnfolder]: 4265/7115 cut-off events. [2021-03-25 00:04:22,293 INFO L130 PetriNetUnfolder]: For 133645/133686 co-relation queries the response was YES. [2021-03-25 00:04:22,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51822 conditions, 7115 events. 4265/7115 cut-off events. For 133645/133686 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 44384 event pairs, 252 based on Foata normal form. 26/6633 useless extension candidates. Maximal degree in co-relation 51424. Up to 5229 conditions per place. [2021-03-25 00:04:22,410 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 2036 selfloop transitions, 590 changer transitions 0/2644 dead transitions. [2021-03-25 00:04:22,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 2644 transitions, 36720 flow [2021-03-25 00:04:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-03-25 00:04:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-03-25 00:04:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 3037 transitions. [2021-03-25 00:04:22,414 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6497646555412923 [2021-03-25 00:04:22,414 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 3037 transitions. [2021-03-25 00:04:22,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 3037 transitions. [2021-03-25 00:04:22,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:22,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 3037 transitions. [2021-03-25 00:04:22,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 53.280701754385966) internal successors, (3037), 57 states have internal predecessors, (3037), 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 00:04:22,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 82.0) internal successors, (4756), 58 states have internal predecessors, (4756), 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 00:04:22,423 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 82.0) internal successors, (4756), 58 states have internal predecessors, (4756), 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 00:04:22,423 INFO L185 Difference]: Start difference. First operand has 626 places, 2215 transitions, 22578 flow. Second operand 57 states and 3037 transitions. [2021-03-25 00:04:22,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 2644 transitions, 36720 flow [2021-03-25 00:04:23,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 2644 transitions, 33125 flow, removed 1777 selfloop flow, removed 2 redundant places. [2021-03-25 00:04:23,690 INFO L241 Difference]: Finished difference. Result has 707 places, 2570 transitions, 28508 flow [2021-03-25 00:04:23,692 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=19193, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1882, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=28508, PETRI_PLACES=707, PETRI_TRANSITIONS=2570} [2021-03-25 00:04:23,692 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 654 predicate places. [2021-03-25 00:04:23,692 INFO L480 AbstractCegarLoop]: Abstraction has has 707 places, 2570 transitions, 28508 flow [2021-03-25 00:04:23,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:04:23,693 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:23,693 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:04:23,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 00:04:23,693 INFO L428 AbstractCegarLoop]: === Iteration 13 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:04:23,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:23,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1146365083, now seen corresponding path program 11 times [2021-03-25 00:04:23,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:23,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50841090] [2021-03-25 00:04:23,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:23,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:23,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:23,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:23,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:23,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:23,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:23,772 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:04:23,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:23,781 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 00:04:23,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:23,791 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-25 00:04:23,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:23,803 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-03-25 00:04:23,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:23,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:23,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:23,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:23,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:23,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:23,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:23,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:23,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:23,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:23,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:23,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:23,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:23,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:23,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:23,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:23,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:23,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:23,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:23,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:04:23,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:24,017 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:04:24,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:24,020 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 00:04:24,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50841090] [2021-03-25 00:04:24,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:24,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-25 00:04:24,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753194146] [2021-03-25 00:04:24,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-25 00:04:24,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:24,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-25 00:04:24,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-25 00:04:24,022 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:04:24,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 2570 transitions, 28508 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:04:24,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:24,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:04:24,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:30,676 INFO L129 PetriNetUnfolder]: 4888/8170 cut-off events. [2021-03-25 00:04:30,676 INFO L130 PetriNetUnfolder]: For 190944/190985 co-relation queries the response was YES. [2021-03-25 00:04:30,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64303 conditions, 8170 events. 4888/8170 cut-off events. For 190944/190985 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 52199 event pairs, 299 based on Foata normal form. 27/7616 useless extension candidates. Maximal degree in co-relation 63795. Up to 5804 conditions per place. [2021-03-25 00:04:30,959 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 2225 selfloop transitions, 865 changer transitions 0/3108 dead transitions. [2021-03-25 00:04:30,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 794 places, 3108 transitions, 47822 flow [2021-03-25 00:04:30,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-03-25 00:04:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-03-25 00:04:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 4731 transitions. [2021-03-25 00:04:30,963 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6556263858093127 [2021-03-25 00:04:30,963 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 4731 transitions. [2021-03-25 00:04:30,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 4731 transitions. [2021-03-25 00:04:30,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:30,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 4731 transitions. [2021-03-25 00:04:30,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 53.76136363636363) internal successors, (4731), 88 states have internal predecessors, (4731), 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 00:04:30,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 82.0) internal successors, (7298), 89 states have internal predecessors, (7298), 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 00:04:30,977 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 82.0) internal successors, (7298), 89 states have internal predecessors, (7298), 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 00:04:30,977 INFO L185 Difference]: Start difference. First operand has 707 places, 2570 transitions, 28508 flow. Second operand 88 states and 4731 transitions. [2021-03-25 00:04:30,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 794 places, 3108 transitions, 47822 flow [2021-03-25 00:04:33,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 3108 transitions, 44385 flow, removed 1698 selfloop flow, removed 2 redundant places. [2021-03-25 00:04:33,232 INFO L241 Difference]: Finished difference. Result has 815 places, 3066 transitions, 40206 flow [2021-03-25 00:04:33,235 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=25287, PETRI_DIFFERENCE_MINUEND_PLACES=705, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2078, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=40206, PETRI_PLACES=815, PETRI_TRANSITIONS=3066} [2021-03-25 00:04:33,235 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 762 predicate places. [2021-03-25 00:04:33,235 INFO L480 AbstractCegarLoop]: Abstraction has has 815 places, 3066 transitions, 40206 flow [2021-03-25 00:04:33,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:04:33,236 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:33,236 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:04:33,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 00:04:33,236 INFO L428 AbstractCegarLoop]: === Iteration 14 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:04:33,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:33,236 INFO L82 PathProgramCache]: Analyzing trace with hash 757610911, now seen corresponding path program 12 times [2021-03-25 00:04:33,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:33,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545409904] [2021-03-25 00:04:33,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:33,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:33,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:33,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:33,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:33,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:33,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:33,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:33,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:33,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:33,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:33,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:33,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:33,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:33,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:33,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:33,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:33,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:33,493 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:04:33,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:33,524 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:04:33,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:33,531 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 00:04:33,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545409904] [2021-03-25 00:04:33,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:33,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:04:33,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454951076] [2021-03-25 00:04:33,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:04:33,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:33,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:04:33,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:04:33,532 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:04:33,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 815 places, 3066 transitions, 40206 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:04:33,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:33,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:04:33,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:39,154 INFO L129 PetriNetUnfolder]: 5294/8835 cut-off events. [2021-03-25 00:04:39,155 INFO L130 PetriNetUnfolder]: For 221515/221554 co-relation queries the response was YES. [2021-03-25 00:04:39,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71700 conditions, 8835 events. 5294/8835 cut-off events. For 221515/221554 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 57069 event pairs, 287 based on Foata normal form. 24/8241 useless extension candidates. Maximal degree in co-relation 71207. Up to 6639 conditions per place. [2021-03-25 00:04:39,313 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 2765 selfloop transitions, 639 changer transitions 0/3422 dead transitions. [2021-03-25 00:04:39,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 858 places, 3422 transitions, 53961 flow [2021-03-25 00:04:39,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-25 00:04:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-03-25 00:04:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2301 transitions. [2021-03-25 00:04:39,315 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6377494456762749 [2021-03-25 00:04:39,315 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2301 transitions. [2021-03-25 00:04:39,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2301 transitions. [2021-03-25 00:04:39,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:39,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2301 transitions. [2021-03-25 00:04:39,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.29545454545455) internal successors, (2301), 44 states have internal predecessors, (2301), 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 00:04:39,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 82.0) internal successors, (3690), 45 states have internal predecessors, (3690), 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 00:04:39,322 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 82.0) internal successors, (3690), 45 states have internal predecessors, (3690), 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 00:04:39,322 INFO L185 Difference]: Start difference. First operand has 815 places, 3066 transitions, 40206 flow. Second operand 44 states and 2301 transitions. [2021-03-25 00:04:39,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 858 places, 3422 transitions, 53961 flow [2021-03-25 00:04:42,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 858 places, 3422 transitions, 44417 flow, removed 4772 selfloop flow, removed 0 redundant places. [2021-03-25 00:04:42,493 INFO L241 Difference]: Finished difference. Result has 871 places, 3342 transitions, 37811 flow [2021-03-25 00:04:42,495 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=31276, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=406, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=37811, PETRI_PLACES=871, PETRI_TRANSITIONS=3342} [2021-03-25 00:04:42,496 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 818 predicate places. [2021-03-25 00:04:42,496 INFO L480 AbstractCegarLoop]: Abstraction has has 871 places, 3342 transitions, 37811 flow [2021-03-25 00:04:42,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:04:42,496 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:42,496 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:04:42,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 00:04:42,496 INFO L428 AbstractCegarLoop]: === Iteration 15 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:04:42,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:42,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1285726095, now seen corresponding path program 13 times [2021-03-25 00:04:42,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:42,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451816166] [2021-03-25 00:04:42,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:42,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:42,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:42,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:42,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:42,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:42,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:42,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:42,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:42,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:42,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:42,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:42,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:42,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:42,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:42,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:42,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:42,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:42,745 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:04:42,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:42,771 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:04:42,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:42,774 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 00:04:42,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451816166] [2021-03-25 00:04:42,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:42,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 00:04:42,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816499199] [2021-03-25 00:04:42,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 00:04:42,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:42,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 00:04:42,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-25 00:04:42,775 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:04:42,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 871 places, 3342 transitions, 37811 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:04:42,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:42,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:04:42,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:49,599 INFO L129 PetriNetUnfolder]: 5550/9303 cut-off events. [2021-03-25 00:04:49,600 INFO L130 PetriNetUnfolder]: For 231176/231217 co-relation queries the response was YES. [2021-03-25 00:04:49,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71972 conditions, 9303 events. 5550/9303 cut-off events. For 231176/231217 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 61467 event pairs, 320 based on Foata normal form. 26/8662 useless extension candidates. Maximal degree in co-relation 71421. Up to 6879 conditions per place. [2021-03-25 00:04:49,784 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 2822 selfloop transitions, 796 changer transitions 0/3636 dead transitions. [2021-03-25 00:04:49,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 3636 transitions, 52725 flow [2021-03-25 00:04:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-25 00:04:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-03-25 00:04:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 3496 transitions. [2021-03-25 00:04:49,787 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6459719142645972 [2021-03-25 00:04:49,787 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 3496 transitions. [2021-03-25 00:04:49,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 3496 transitions. [2021-03-25 00:04:49,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:49,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 3496 transitions. [2021-03-25 00:04:49,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 52.96969696969697) internal successors, (3496), 66 states have internal predecessors, (3496), 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 00:04:49,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 82.0) internal successors, (5494), 67 states have internal predecessors, (5494), 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 00:04:49,796 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 82.0) internal successors, (5494), 67 states have internal predecessors, (5494), 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 00:04:49,797 INFO L185 Difference]: Start difference. First operand has 871 places, 3342 transitions, 37811 flow. Second operand 66 states and 3496 transitions. [2021-03-25 00:04:49,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 3636 transitions, 52725 flow [2021-03-25 00:04:52,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 933 places, 3636 transitions, 50099 flow, removed 1213 selfloop flow, removed 3 redundant places. [2021-03-25 00:04:52,584 INFO L241 Difference]: Finished difference. Result has 956 places, 3576 transitions, 43192 flow [2021-03-25 00:04:52,587 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=35771, PETRI_DIFFERENCE_MINUEND_PLACES=868, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=595, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=43192, PETRI_PLACES=956, PETRI_TRANSITIONS=3576} [2021-03-25 00:04:52,587 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 903 predicate places. [2021-03-25 00:04:52,587 INFO L480 AbstractCegarLoop]: Abstraction has has 956 places, 3576 transitions, 43192 flow [2021-03-25 00:04:52,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:04:52,587 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:52,587 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:04:52,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 00:04:52,587 INFO L428 AbstractCegarLoop]: === Iteration 16 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:04:52,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:52,588 INFO L82 PathProgramCache]: Analyzing trace with hash -594897881, now seen corresponding path program 14 times [2021-03-25 00:04:52,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:52,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524633324] [2021-03-25 00:04:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:52,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:52,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:52,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:52,631 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:04:52,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:52,640 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 00:04:52,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:04:52,650 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-25 00:04:52,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 00:04:52,663 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-25 00:04:52,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 00:04:52,676 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-25 00:04:52,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:04:52,691 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-25 00:04:52,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:04:52,706 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-25 00:04:52,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:04:52,724 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-25 00:04:52,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:04:52,742 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-25 00:04:52,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 00:04:52,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:52,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:52,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:52,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:04:52,826 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:04:52,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:52,848 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:04:52,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:04:52,872 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:04:52,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:04:52,875 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 00:04:52,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524633324] [2021-03-25 00:04:52,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:52,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-25 00:04:52,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730273644] [2021-03-25 00:04:52,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-25 00:04:52,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:52,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-25 00:04:52,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-25 00:04:52,877 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:04:52,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 956 places, 3576 transitions, 43192 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:04:52,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:52,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:04:52,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:59,393 INFO L129 PetriNetUnfolder]: 5861/9791 cut-off events. [2021-03-25 00:04:59,393 INFO L130 PetriNetUnfolder]: For 294748/294789 co-relation queries the response was YES. [2021-03-25 00:04:59,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81255 conditions, 9791 events. 5861/9791 cut-off events. For 294748/294789 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 65004 event pairs, 413 based on Foata normal form. 26/9124 useless extension candidates. Maximal degree in co-relation 80906. Up to 7357 conditions per place. [2021-03-25 00:04:59,619 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3036 selfloop transitions, 814 changer transitions 0/3868 dead transitions. [2021-03-25 00:04:59,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 991 places, 3868 transitions, 58525 flow [2021-03-25 00:04:59,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-25 00:04:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-03-25 00:04:59,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1956 transitions. [2021-03-25 00:04:59,621 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6626016260162602 [2021-03-25 00:04:59,621 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1956 transitions. [2021-03-25 00:04:59,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1956 transitions. [2021-03-25 00:04:59,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:59,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1956 transitions. [2021-03-25 00:04:59,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 54.333333333333336) internal successors, (1956), 36 states have internal predecessors, (1956), 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 00:04:59,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 82.0) internal successors, (3034), 37 states have internal predecessors, (3034), 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 00:04:59,765 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 82.0) internal successors, (3034), 37 states have internal predecessors, (3034), 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 00:04:59,765 INFO L185 Difference]: Start difference. First operand has 956 places, 3576 transitions, 43192 flow. Second operand 36 states and 1956 transitions. [2021-03-25 00:04:59,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 991 places, 3868 transitions, 58525 flow [2021-03-25 00:05:03,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 979 places, 3868 transitions, 54307 flow, removed 1788 selfloop flow, removed 12 redundant places. [2021-03-25 00:05:03,669 INFO L241 Difference]: Finished difference. Result has 994 places, 3796 transitions, 47120 flow [2021-03-25 00:05:03,671 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=39084, PETRI_DIFFERENCE_MINUEND_PLACES=944, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=613, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2914, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=47120, PETRI_PLACES=994, PETRI_TRANSITIONS=3796} [2021-03-25 00:05:03,672 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 941 predicate places. [2021-03-25 00:05:03,672 INFO L480 AbstractCegarLoop]: Abstraction has has 994 places, 3796 transitions, 47120 flow [2021-03-25 00:05:03,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 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 00:05:03,672 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:05:03,672 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:05:03,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 00:05:03,672 INFO L428 AbstractCegarLoop]: === Iteration 17 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:05:03,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:05:03,672 INFO L82 PathProgramCache]: Analyzing trace with hash -7107125, now seen corresponding path program 15 times [2021-03-25 00:05:03,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:05:03,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995183788] [2021-03-25 00:05:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:05:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:05:03,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:05:03,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:05:03,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:05:03,718 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:05:03,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:05:03,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:03,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:03,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:03,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:03,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:03,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:03,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:03,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:03,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:03,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:03,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:03,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:03,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:03,920 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:05:03,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:05:03,944 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:05:03,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:03,946 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 00:05:03,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995183788] [2021-03-25 00:05:03,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:05:03,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:05:03,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625854008] [2021-03-25 00:05:03,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:05:03,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:05:03,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:05:03,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:05:03,950 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:05:03,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 994 places, 3796 transitions, 47120 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:05:03,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:05:03,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:05:03,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:05:12,269 INFO L129 PetriNetUnfolder]: 6209/10341 cut-off events. [2021-03-25 00:05:12,269 INFO L130 PetriNetUnfolder]: For 364587/364626 co-relation queries the response was YES. [2021-03-25 00:05:12,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90251 conditions, 10341 events. 6209/10341 cut-off events. For 364587/364626 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 69093 event pairs, 359 based on Foata normal form. 24/9645 useless extension candidates. Maximal degree in co-relation 89664. Up to 7714 conditions per place. [2021-03-25 00:05:12,604 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3183 selfloop transitions, 951 changer transitions 0/4152 dead transitions. [2021-03-25 00:05:12,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1052 places, 4152 transitions, 64354 flow [2021-03-25 00:05:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-03-25 00:05:12,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-03-25 00:05:12,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 3136 transitions. [2021-03-25 00:05:12,607 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6482017362546507 [2021-03-25 00:05:12,607 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 3136 transitions. [2021-03-25 00:05:12,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 3136 transitions. [2021-03-25 00:05:12,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:05:12,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 3136 transitions. [2021-03-25 00:05:12,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 53.152542372881356) internal successors, (3136), 59 states have internal predecessors, (3136), 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 00:05:12,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 82.0) internal successors, (4920), 60 states have internal predecessors, (4920), 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 00:05:12,614 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 82.0) internal successors, (4920), 60 states have internal predecessors, (4920), 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 00:05:12,614 INFO L185 Difference]: Start difference. First operand has 994 places, 3796 transitions, 47120 flow. Second operand 59 states and 3136 transitions. [2021-03-25 00:05:12,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1052 places, 4152 transitions, 64354 flow [2021-03-25 00:05:17,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1050 places, 4152 transitions, 61489 flow, removed 1412 selfloop flow, removed 2 redundant places. [2021-03-25 00:05:17,822 INFO L241 Difference]: Finished difference. Result has 1068 places, 4067 transitions, 53666 flow [2021-03-25 00:05:17,825 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=44409, PETRI_DIFFERENCE_MINUEND_PLACES=992, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=721, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3032, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=53666, PETRI_PLACES=1068, PETRI_TRANSITIONS=4067} [2021-03-25 00:05:17,825 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1015 predicate places. [2021-03-25 00:05:17,826 INFO L480 AbstractCegarLoop]: Abstraction has has 1068 places, 4067 transitions, 53666 flow [2021-03-25 00:05:17,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:05:17,826 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:05:17,826 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:05:17,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 00:05:17,826 INFO L428 AbstractCegarLoop]: === Iteration 18 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:05:17,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:05:17,826 INFO L82 PathProgramCache]: Analyzing trace with hash -920096161, now seen corresponding path program 16 times [2021-03-25 00:05:17,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:05:17,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843103223] [2021-03-25 00:05:17,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:05:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:05:17,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:17,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:05:17,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:17,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:05:17,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:17,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:05:17,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:17,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:17,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:17,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:17,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:17,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:17,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:17,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:17,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:17,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:17,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:17,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:17,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:17,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:17,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:17,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:18,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:18,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:18,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:18,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:18,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:18,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:18,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:18,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:18,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:18,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:18,096 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:05:18,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:05:18,120 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:05:18,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:18,122 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 00:05:18,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843103223] [2021-03-25 00:05:18,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:05:18,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:05:18,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877593613] [2021-03-25 00:05:18,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:05:18,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:05:18,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:05:18,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:05:18,124 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:05:18,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1068 places, 4067 transitions, 53666 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:05:18,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:05:18,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:05:18,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:05:26,954 INFO L129 PetriNetUnfolder]: 6413/10748 cut-off events. [2021-03-25 00:05:26,955 INFO L130 PetriNetUnfolder]: For 386395/386436 co-relation queries the response was YES. [2021-03-25 00:05:27,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94593 conditions, 10748 events. 6413/10748 cut-off events. For 386395/386436 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 73207 event pairs, 350 based on Foata normal form. 26/10005 useless extension candidates. Maximal degree in co-relation 94207. Up to 8064 conditions per place. [2021-03-25 00:05:27,280 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3423 selfloop transitions, 834 changer transitions 0/4275 dead transitions. [2021-03-25 00:05:27,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1120 places, 4275 transitions, 67329 flow [2021-03-25 00:05:27,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-25 00:05:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-03-25 00:05:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2754 transitions. [2021-03-25 00:05:27,282 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6336861481822366 [2021-03-25 00:05:27,282 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2754 transitions. [2021-03-25 00:05:27,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2754 transitions. [2021-03-25 00:05:27,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:05:27,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2754 transitions. [2021-03-25 00:05:27,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 51.9622641509434) internal successors, (2754), 53 states have internal predecessors, (2754), 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 00:05:27,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 82.0) internal successors, (4428), 54 states have internal predecessors, (4428), 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 00:05:27,288 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 82.0) internal successors, (4428), 54 states have internal predecessors, (4428), 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 00:05:27,288 INFO L185 Difference]: Start difference. First operand has 1068 places, 4067 transitions, 53666 flow. Second operand 53 states and 2754 transitions. [2021-03-25 00:05:27,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1120 places, 4275 transitions, 67329 flow [2021-03-25 00:05:32,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1106 places, 4275 transitions, 60988 flow, removed 2645 selfloop flow, removed 14 redundant places. [2021-03-25 00:05:32,405 INFO L241 Difference]: Finished difference. Result has 1120 places, 4236 transitions, 53293 flow [2021-03-25 00:05:32,409 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=47394, PETRI_DIFFERENCE_MINUEND_PLACES=1054, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=678, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=53293, PETRI_PLACES=1120, PETRI_TRANSITIONS=4236} [2021-03-25 00:05:32,409 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1067 predicate places. [2021-03-25 00:05:32,409 INFO L480 AbstractCegarLoop]: Abstraction has has 1120 places, 4236 transitions, 53293 flow [2021-03-25 00:05:32,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:05:32,409 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:05:32,409 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:05:32,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 00:05:32,410 INFO L428 AbstractCegarLoop]: === Iteration 19 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:05:32,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:05:32,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1830179307, now seen corresponding path program 17 times [2021-03-25 00:05:32,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:05:32,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548419543] [2021-03-25 00:05:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:05:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:05:32,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:05:32,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:05:32,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:05:32,449 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:05:32,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:05:32,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:32,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:32,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:32,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:32,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:32,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:32,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:32,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:32,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:32,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:32,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:32,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:32,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:32,654 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:05:32,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:05:32,680 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:05:32,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:32,683 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 00:05:32,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548419543] [2021-03-25 00:05:32,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:05:32,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 00:05:32,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625085547] [2021-03-25 00:05:32,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 00:05:32,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:05:32,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 00:05:32,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-25 00:05:32,685 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:05:32,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1120 places, 4236 transitions, 53293 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:05:32,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:05:32,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:05:32,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:05:35,820 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-03-25 00:05:41,285 INFO L129 PetriNetUnfolder]: 6594/11020 cut-off events. [2021-03-25 00:05:41,286 INFO L130 PetriNetUnfolder]: For 414813/414854 co-relation queries the response was YES. [2021-03-25 00:05:41,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97016 conditions, 11020 events. 6594/11020 cut-off events. For 414813/414854 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 75041 event pairs, 341 based on Foata normal form. 26/10298 useless extension candidates. Maximal degree in co-relation 96394. Up to 8310 conditions per place. [2021-03-25 00:05:41,569 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3468 selfloop transitions, 985 changer transitions 0/4471 dead transitions. [2021-03-25 00:05:41,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1162 places, 4471 transitions, 67796 flow [2021-03-25 00:05:41,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-25 00:05:41,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-03-25 00:05:41,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2305 transitions. [2021-03-25 00:05:41,572 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6537152580828134 [2021-03-25 00:05:41,572 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2305 transitions. [2021-03-25 00:05:41,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2305 transitions. [2021-03-25 00:05:41,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:05:41,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2305 transitions. [2021-03-25 00:05:41,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 53.604651162790695) internal successors, (2305), 43 states have internal predecessors, (2305), 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 00:05:41,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 82.0) internal successors, (3608), 44 states have internal predecessors, (3608), 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 00:05:41,577 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 82.0) internal successors, (3608), 44 states have internal predecessors, (3608), 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 00:05:41,577 INFO L185 Difference]: Start difference. First operand has 1120 places, 4236 transitions, 53293 flow. Second operand 43 states and 2305 transitions. [2021-03-25 00:05:41,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1162 places, 4471 transitions, 67796 flow [2021-03-25 00:05:47,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1149 places, 4471 transitions, 64064 flow, removed 1451 selfloop flow, removed 13 redundant places. [2021-03-25 00:05:47,486 INFO L241 Difference]: Finished difference. Result has 1162 places, 4398 transitions, 55779 flow [2021-03-25 00:05:47,490 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=49689, PETRI_DIFFERENCE_MINUEND_PLACES=1107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=843, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=55779, PETRI_PLACES=1162, PETRI_TRANSITIONS=4398} [2021-03-25 00:05:47,490 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1109 predicate places. [2021-03-25 00:05:47,490 INFO L480 AbstractCegarLoop]: Abstraction has has 1162 places, 4398 transitions, 55779 flow [2021-03-25 00:05:47,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:05:47,491 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:05:47,491 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:05:47,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 00:05:47,491 INFO L428 AbstractCegarLoop]: === Iteration 20 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:05:47,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:05:47,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2111146965, now seen corresponding path program 18 times [2021-03-25 00:05:47,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:05:47,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055144847] [2021-03-25 00:05:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:05:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:05:47,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:05:47,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:05:47,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:05:47,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:47,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:47,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:47,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:47,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:47,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:47,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:47,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:47,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:47,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:47,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:47,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:47,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:05:47,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:05:47,727 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:05:47,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:05:47,748 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:05:47,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:05:47,750 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 00:05:47,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055144847] [2021-03-25 00:05:47,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:05:47,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 00:05:47,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286476206] [2021-03-25 00:05:47,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 00:05:47,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:05:47,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 00:05:47,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-25 00:05:47,752 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:05:47,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1162 places, 4398 transitions, 55779 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:05:47,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:05:47,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:05:47,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:05:56,467 INFO L129 PetriNetUnfolder]: 6677/11184 cut-off events. [2021-03-25 00:05:56,468 INFO L130 PetriNetUnfolder]: For 401059/401100 co-relation queries the response was YES. [2021-03-25 00:05:56,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97888 conditions, 11184 events. 6677/11184 cut-off events. For 401059/401100 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 76597 event pairs, 362 based on Foata normal form. 26/10433 useless extension candidates. Maximal degree in co-relation 97481. Up to 8546 conditions per place. [2021-03-25 00:05:56,799 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3665 selfloop transitions, 835 changer transitions 0/4518 dead transitions. [2021-03-25 00:05:56,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1205 places, 4518 transitions, 68058 flow [2021-03-25 00:05:56,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-25 00:05:56,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-03-25 00:05:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2317 transitions. [2021-03-25 00:05:56,801 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6421840354767184 [2021-03-25 00:05:56,801 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2317 transitions. [2021-03-25 00:05:56,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2317 transitions. [2021-03-25 00:05:56,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:05:56,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2317 transitions. [2021-03-25 00:05:56,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.65909090909091) internal successors, (2317), 44 states have internal predecessors, (2317), 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 00:05:56,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 82.0) internal successors, (3690), 45 states have internal predecessors, (3690), 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 00:05:56,805 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 82.0) internal successors, (3690), 45 states have internal predecessors, (3690), 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 00:05:56,805 INFO L185 Difference]: Start difference. First operand has 1162 places, 4398 transitions, 55779 flow. Second operand 44 states and 2317 transitions. [2021-03-25 00:05:56,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1205 places, 4518 transitions, 68058 flow [2021-03-25 00:06:02,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1199 places, 4518 transitions, 65647 flow, removed 988 selfloop flow, removed 6 redundant places. [2021-03-25 00:06:02,747 INFO L241 Difference]: Finished difference. Result has 1206 places, 4483 transitions, 57768 flow [2021-03-25 00:06:02,750 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=53368, PETRI_DIFFERENCE_MINUEND_PLACES=1156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=763, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=57768, PETRI_PLACES=1206, PETRI_TRANSITIONS=4483} [2021-03-25 00:06:02,750 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1153 predicate places. [2021-03-25 00:06:02,750 INFO L480 AbstractCegarLoop]: Abstraction has has 1206 places, 4483 transitions, 57768 flow [2021-03-25 00:06:02,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:06:02,751 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:06:02,751 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:06:02,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-25 00:06:02,751 INFO L428 AbstractCegarLoop]: === Iteration 21 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:06:02,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:06:02,751 INFO L82 PathProgramCache]: Analyzing trace with hash -39401661, now seen corresponding path program 19 times [2021-03-25 00:06:02,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:06:02,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326942188] [2021-03-25 00:06:02,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:06:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:06:02,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:06:02,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:06:02,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:06:02,788 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:06:02,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:06:02,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:06:02,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:02,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:02,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:02,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:02,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:02,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:02,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:02,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:02,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:02,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:02,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:02,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:02,981 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:06:02,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:06:03,002 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:06:03,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:06:03,004 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 00:06:03,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326942188] [2021-03-25 00:06:03,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:06:03,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:06:03,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543834390] [2021-03-25 00:06:03,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:06:03,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:06:03,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:06:03,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:06:03,006 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:06:03,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1206 places, 4483 transitions, 57768 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:06:03,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:06:03,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:06:03,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:06:12,395 INFO L129 PetriNetUnfolder]: 7061/11839 cut-off events. [2021-03-25 00:06:12,396 INFO L130 PetriNetUnfolder]: For 461450/461491 co-relation queries the response was YES. [2021-03-25 00:06:12,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105660 conditions, 11839 events. 7061/11839 cut-off events. For 461450/461491 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 82181 event pairs, 358 based on Foata normal form. 26/11028 useless extension candidates. Maximal degree in co-relation 105244. Up to 8689 conditions per place. [2021-03-25 00:06:12,765 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3681 selfloop transitions, 1114 changer transitions 0/4813 dead transitions. [2021-03-25 00:06:12,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1256 places, 4813 transitions, 74779 flow [2021-03-25 00:06:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-25 00:06:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-03-25 00:06:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2705 transitions. [2021-03-25 00:06:12,768 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6468197034911526 [2021-03-25 00:06:12,768 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2705 transitions. [2021-03-25 00:06:12,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2705 transitions. [2021-03-25 00:06:12,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:06:12,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2705 transitions. [2021-03-25 00:06:12,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 53.03921568627451) internal successors, (2705), 51 states have internal predecessors, (2705), 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 00:06:12,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 82.0) internal successors, (4264), 52 states have internal predecessors, (4264), 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 00:06:12,772 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 82.0) internal successors, (4264), 52 states have internal predecessors, (4264), 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 00:06:12,773 INFO L185 Difference]: Start difference. First operand has 1206 places, 4483 transitions, 57768 flow. Second operand 51 states and 2705 transitions. [2021-03-25 00:06:12,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1256 places, 4813 transitions, 74779 flow [2021-03-25 00:06:19,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1236 places, 4813 transitions, 71907 flow, removed 934 selfloop flow, removed 20 redundant places. [2021-03-25 00:06:19,627 INFO L241 Difference]: Finished difference. Result has 1255 places, 4724 transitions, 62753 flow [2021-03-25 00:06:19,630 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=54950, PETRI_DIFFERENCE_MINUEND_PLACES=1186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=895, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=62753, PETRI_PLACES=1255, PETRI_TRANSITIONS=4724} [2021-03-25 00:06:19,630 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1202 predicate places. [2021-03-25 00:06:19,630 INFO L480 AbstractCegarLoop]: Abstraction has has 1255 places, 4724 transitions, 62753 flow [2021-03-25 00:06:19,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:06:19,630 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:06:19,630 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:06:19,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-25 00:06:19,630 INFO L428 AbstractCegarLoop]: === Iteration 22 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:06:19,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:06:19,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1027263643, now seen corresponding path program 20 times [2021-03-25 00:06:19,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:06:19,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505856790] [2021-03-25 00:06:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:06:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:06:19,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:06:19,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:06:19,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:06:19,667 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:06:19,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:06:19,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:06:19,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:19,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:19,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:19,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:19,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:06:19,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:06:19,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:06:19,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:19,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:19,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:19,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:19,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:19,859 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-25 00:06:19,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:06:19,881 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:06:19,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:06:19,883 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 00:06:19,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505856790] [2021-03-25 00:06:19,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:06:19,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:06:19,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997272790] [2021-03-25 00:06:19,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:06:19,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:06:19,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:06:19,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:06:19,885 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:06:19,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1255 places, 4724 transitions, 62753 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:06:19,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:06:19,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:06:19,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:06:32,895 INFO L129 PetriNetUnfolder]: 7528/12710 cut-off events. [2021-03-25 00:06:32,895 INFO L130 PetriNetUnfolder]: For 563407/563448 co-relation queries the response was YES. [2021-03-25 00:06:33,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120193 conditions, 12710 events. 7528/12710 cut-off events. For 563407/563448 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 90275 event pairs, 365 based on Foata normal form. 26/11827 useless extension candidates. Maximal degree in co-relation 119759. Up to 9009 conditions per place. [2021-03-25 00:06:33,378 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3788 selfloop transitions, 1389 changer transitions 0/5195 dead transitions. [2021-03-25 00:06:33,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1355 places, 5195 transitions, 88063 flow [2021-03-25 00:06:33,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-03-25 00:06:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-03-25 00:06:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 5284 transitions. [2021-03-25 00:06:33,381 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6380101424776624 [2021-03-25 00:06:33,381 INFO L72 ComplementDD]: Start complementDD. Operand 101 states and 5284 transitions. [2021-03-25 00:06:33,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 5284 transitions. [2021-03-25 00:06:33,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:06:33,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 101 states and 5284 transitions. [2021-03-25 00:06:33,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 102 states, 101 states have (on average 52.31683168316832) internal successors, (5284), 101 states have internal predecessors, (5284), 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 00:06:33,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 102 states, 102 states have (on average 82.0) internal successors, (8364), 102 states have internal predecessors, (8364), 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 00:06:33,391 INFO L81 ComplementDD]: Finished complementDD. Result has 102 states, 102 states have (on average 82.0) internal successors, (8364), 102 states have internal predecessors, (8364), 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 00:06:33,391 INFO L185 Difference]: Start difference. First operand has 1255 places, 4724 transitions, 62753 flow. Second operand 101 states and 5284 transitions. [2021-03-25 00:06:33,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1355 places, 5195 transitions, 88063 flow [2021-03-25 00:06:43,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1347 places, 5195 transitions, 82856 flow, removed 2161 selfloop flow, removed 8 redundant places. [2021-03-25 00:06:43,375 INFO L241 Difference]: Finished difference. Result has 1368 places, 5114 transitions, 73657 flow [2021-03-25 00:06:43,379 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=58778, PETRI_DIFFERENCE_MINUEND_PLACES=1247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=73657, PETRI_PLACES=1368, PETRI_TRANSITIONS=5114} [2021-03-25 00:06:43,379 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1315 predicate places. [2021-03-25 00:06:43,379 INFO L480 AbstractCegarLoop]: Abstraction has has 1368 places, 5114 transitions, 73657 flow [2021-03-25 00:06:43,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:06:43,379 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:06:43,380 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:06:43,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-25 00:06:43,380 INFO L428 AbstractCegarLoop]: === Iteration 23 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:06:43,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:06:43,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1237737417, now seen corresponding path program 21 times [2021-03-25 00:06:43,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:06:43,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620587879] [2021-03-25 00:06:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:06:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:06:43,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:06:43,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:06:43,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:06:43,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:06:43,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:06:43,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:43,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:43,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:43,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:43,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:06:43,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:06:43,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:06:43,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:06:43,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:43,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:43,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:06:43,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:06:43,653 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:06:43,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:06:43,681 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:06:43,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:06:43,684 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 00:06:43,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620587879] [2021-03-25 00:06:43,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:06:43,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:06:43,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140517678] [2021-03-25 00:06:43,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:06:43,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:06:43,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:06:43,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:06:43,686 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:06:43,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1368 places, 5114 transitions, 73657 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:06:43,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:06:43,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:06:43,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:06:47,525 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-03-25 00:06:59,246 INFO L129 PetriNetUnfolder]: 8414/14118 cut-off events. [2021-03-25 00:06:59,247 INFO L130 PetriNetUnfolder]: For 703862/703903 co-relation queries the response was YES. [2021-03-25 00:06:59,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140803 conditions, 14118 events. 8414/14118 cut-off events. For 703862/703903 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 101473 event pairs, 360 based on Foata normal form. 26/13171 useless extension candidates. Maximal degree in co-relation 140302. Up to 9694 conditions per place. [2021-03-25 00:06:59,699 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3945 selfloop transitions, 2064 changer transitions 0/6027 dead transitions. [2021-03-25 00:06:59,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1467 places, 6027 transitions, 108383 flow [2021-03-25 00:06:59,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-03-25 00:06:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-03-25 00:06:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 5287 transitions. [2021-03-25 00:06:59,702 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6447560975609756 [2021-03-25 00:06:59,702 INFO L72 ComplementDD]: Start complementDD. Operand 100 states and 5287 transitions. [2021-03-25 00:06:59,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 100 states and 5287 transitions. [2021-03-25 00:06:59,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:06:59,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 100 states and 5287 transitions. [2021-03-25 00:06:59,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 101 states, 100 states have (on average 52.87) internal successors, (5287), 100 states have internal predecessors, (5287), 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 00:06:59,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 101 states, 101 states have (on average 82.0) internal successors, (8282), 101 states have internal predecessors, (8282), 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 00:06:59,712 INFO L81 ComplementDD]: Finished complementDD. Result has 101 states, 101 states have (on average 82.0) internal successors, (8282), 101 states have internal predecessors, (8282), 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 00:06:59,712 INFO L185 Difference]: Start difference. First operand has 1368 places, 5114 transitions, 73657 flow. Second operand 100 states and 5287 transitions. [2021-03-25 00:06:59,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1467 places, 6027 transitions, 108383 flow [2021-03-25 00:07:13,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1461 places, 6027 transitions, 99821 flow, removed 4161 selfloop flow, removed 6 redundant places. [2021-03-25 00:07:13,974 INFO L241 Difference]: Finished difference. Result has 1485 places, 5898 transitions, 90311 flow [2021-03-25 00:07:13,978 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=65099, PETRI_DIFFERENCE_MINUEND_PLACES=1362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=90311, PETRI_PLACES=1485, PETRI_TRANSITIONS=5898} [2021-03-25 00:07:13,979 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1432 predicate places. [2021-03-25 00:07:13,979 INFO L480 AbstractCegarLoop]: Abstraction has has 1485 places, 5898 transitions, 90311 flow [2021-03-25 00:07:13,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:07:13,979 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:07:13,979 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:07:13,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-25 00:07:13,979 INFO L428 AbstractCegarLoop]: === Iteration 24 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:07:13,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:07:13,980 INFO L82 PathProgramCache]: Analyzing trace with hash -2116533617, now seen corresponding path program 22 times [2021-03-25 00:07:13,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:07:13,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349131007] [2021-03-25 00:07:13,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:07:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:07:14,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:07:14,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:07:14,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:07:14,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:07:14,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:07:14,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:14,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:14,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:14,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:14,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:07:14,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:07:14,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:07:14,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:07:14,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:14,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:14,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:14,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:14,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:07:14,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:07:14,267 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:07:14,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:07:14,270 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 00:07:14,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349131007] [2021-03-25 00:07:14,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:07:14,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 00:07:14,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090066385] [2021-03-25 00:07:14,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 00:07:14,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:07:14,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 00:07:14,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-25 00:07:14,271 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:07:14,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1485 places, 5898 transitions, 90311 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:07:14,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:07:14,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:07:14,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:07:29,694 INFO L129 PetriNetUnfolder]: 8526/14325 cut-off events. [2021-03-25 00:07:29,695 INFO L130 PetriNetUnfolder]: For 716707/716746 co-relation queries the response was YES. [2021-03-25 00:07:30,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142596 conditions, 14325 events. 8526/14325 cut-off events. For 716707/716746 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 103291 event pairs, 397 based on Foata normal form. 24/13366 useless extension candidates. Maximal degree in co-relation 142127. Up to 10878 conditions per place. [2021-03-25 00:07:30,149 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 4791 selfloop transitions, 1255 changer transitions 0/6064 dead transitions. [2021-03-25 00:07:30,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1522 places, 6064 transitions, 107467 flow [2021-03-25 00:07:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-25 00:07:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-03-25 00:07:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1998 transitions. [2021-03-25 00:07:30,151 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.641206675224647 [2021-03-25 00:07:30,151 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1998 transitions. [2021-03-25 00:07:30,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1998 transitions. [2021-03-25 00:07:30,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:07:30,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1998 transitions. [2021-03-25 00:07:30,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.578947368421055) internal successors, (1998), 38 states have internal predecessors, (1998), 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 00:07:30,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 82.0) internal successors, (3198), 39 states have internal predecessors, (3198), 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 00:07:30,155 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 82.0) internal successors, (3198), 39 states have internal predecessors, (3198), 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 00:07:30,155 INFO L185 Difference]: Start difference. First operand has 1485 places, 5898 transitions, 90311 flow. Second operand 38 states and 1998 transitions. [2021-03-25 00:07:30,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1522 places, 6064 transitions, 107467 flow [2021-03-25 00:07:44,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1512 places, 6064 transitions, 94830 flow, removed 5985 selfloop flow, removed 10 redundant places. [2021-03-25 00:07:44,600 INFO L241 Difference]: Finished difference. Result has 1520 places, 6029 transitions, 84891 flow [2021-03-25 00:07:44,605 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=78236, PETRI_DIFFERENCE_MINUEND_PLACES=1475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=84891, PETRI_PLACES=1520, PETRI_TRANSITIONS=6029} [2021-03-25 00:07:44,605 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1467 predicate places. [2021-03-25 00:07:44,605 INFO L480 AbstractCegarLoop]: Abstraction has has 1520 places, 6029 transitions, 84891 flow [2021-03-25 00:07:44,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:07:44,605 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:07:44,605 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:07:44,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-25 00:07:44,606 INFO L428 AbstractCegarLoop]: === Iteration 25 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:07:44,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:07:44,606 INFO L82 PathProgramCache]: Analyzing trace with hash 551854925, now seen corresponding path program 23 times [2021-03-25 00:07:44,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:07:44,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297861921] [2021-03-25 00:07:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:07:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:07:44,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:07:44,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:07:44,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:07:44,675 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:07:44,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:07:44,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:07:44,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:44,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:44,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:44,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:44,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:07:44,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:07:44,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:44,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:44,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:44,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:44,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:07:44,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:07:44,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:07:44,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:07:44,891 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:07:44,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:07:44,893 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 00:07:44,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297861921] [2021-03-25 00:07:44,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:07:44,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:07:44,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355145302] [2021-03-25 00:07:44,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:07:44,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:07:44,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:07:44,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:07:44,895 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:07:44,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1520 places, 6029 transitions, 84891 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:07:44,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:07:44,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:07:44,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:07:54,263 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-03-25 00:08:02,980 INFO L129 PetriNetUnfolder]: 9013/15299 cut-off events. [2021-03-25 00:08:02,981 INFO L130 PetriNetUnfolder]: For 669641/669682 co-relation queries the response was YES. [2021-03-25 00:08:03,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143518 conditions, 15299 events. 9013/15299 cut-off events. For 669641/669682 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 113208 event pairs, 379 based on Foata normal form. 26/14232 useless extension candidates. Maximal degree in co-relation 143024. Up to 10833 conditions per place. [2021-03-25 00:08:03,596 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 4888 selfloop transitions, 1678 changer transitions 0/6584 dead transitions. [2021-03-25 00:08:03,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1604 places, 6584 transitions, 111367 flow [2021-03-25 00:08:03,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-03-25 00:08:03,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-03-25 00:08:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 4516 transitions. [2021-03-25 00:08:03,599 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6479196556671449 [2021-03-25 00:08:03,599 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 4516 transitions. [2021-03-25 00:08:03,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 4516 transitions. [2021-03-25 00:08:03,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:08:03,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 4516 transitions. [2021-03-25 00:08:03,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 53.129411764705885) internal successors, (4516), 85 states have internal predecessors, (4516), 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 00:08:03,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 82.0) internal successors, (7052), 86 states have internal predecessors, (7052), 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 00:08:03,606 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 82.0) internal successors, (7052), 86 states have internal predecessors, (7052), 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 00:08:03,606 INFO L185 Difference]: Start difference. First operand has 1520 places, 6029 transitions, 84891 flow. Second operand 85 states and 4516 transitions. [2021-03-25 00:08:03,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1604 places, 6584 transitions, 111367 flow [2021-03-25 00:08:15,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1592 places, 6584 transitions, 107077 flow, removed 1659 selfloop flow, removed 12 redundant places. [2021-03-25 00:08:15,605 INFO L241 Difference]: Finished difference. Result has 1641 places, 6446 transitions, 95291 flow [2021-03-25 00:08:15,609 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=80675, PETRI_DIFFERENCE_MINUEND_PLACES=1508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6029, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=95291, PETRI_PLACES=1641, PETRI_TRANSITIONS=6446} [2021-03-25 00:08:15,610 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1588 predicate places. [2021-03-25 00:08:15,610 INFO L480 AbstractCegarLoop]: Abstraction has has 1641 places, 6446 transitions, 95291 flow [2021-03-25 00:08:15,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:08:15,610 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:08:15,610 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:08:15,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-25 00:08:15,610 INFO L428 AbstractCegarLoop]: === Iteration 26 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:08:15,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:08:15,610 INFO L82 PathProgramCache]: Analyzing trace with hash 737261555, now seen corresponding path program 24 times [2021-03-25 00:08:15,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:08:15,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803968864] [2021-03-25 00:08:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:08:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:08:15,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:08:15,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:08:15,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:08:15,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:08:15,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:08:15,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:15,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:15,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:15,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:15,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:08:15,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:08:15,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:08:15,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:08:15,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:15,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:15,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:15,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:15,867 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:08:15,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:08:15,898 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:08:15,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:08:15,901 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 00:08:15,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803968864] [2021-03-25 00:08:15,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:08:15,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:08:15,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463695296] [2021-03-25 00:08:15,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:08:15,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:08:15,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:08:15,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:08:15,902 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:08:15,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1641 places, 6446 transitions, 95291 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:08:15,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:08:15,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:08:15,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:08:22,693 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2021-03-25 00:08:37,176 INFO L129 PetriNetUnfolder]: 9624/16465 cut-off events. [2021-03-25 00:08:37,176 INFO L130 PetriNetUnfolder]: For 814262/814303 co-relation queries the response was YES. [2021-03-25 00:08:37,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164897 conditions, 16465 events. 9624/16465 cut-off events. For 814262/814303 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 125233 event pairs, 370 based on Foata normal form. 27/15303 useless extension candidates. Maximal degree in co-relation 164398. Up to 10363 conditions per place. [2021-03-25 00:08:37,901 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 4285 selfloop transitions, 2841 changer transitions 0/7144 dead transitions. [2021-03-25 00:08:37,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1734 places, 7144 transitions, 132517 flow [2021-03-25 00:08:37,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-03-25 00:08:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-03-25 00:08:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 4964 transitions. [2021-03-25 00:08:37,904 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6440062272963155 [2021-03-25 00:08:37,904 INFO L72 ComplementDD]: Start complementDD. Operand 94 states and 4964 transitions. [2021-03-25 00:08:37,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 4964 transitions. [2021-03-25 00:08:37,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:08:37,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 94 states and 4964 transitions. [2021-03-25 00:08:37,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 95 states, 94 states have (on average 52.808510638297875) internal successors, (4964), 94 states have internal predecessors, (4964), 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 00:08:37,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 95 states, 95 states have (on average 82.0) internal successors, (7790), 95 states have internal predecessors, (7790), 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 00:08:37,910 INFO L81 ComplementDD]: Finished complementDD. Result has 95 states, 95 states have (on average 82.0) internal successors, (7790), 95 states have internal predecessors, (7790), 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 00:08:37,910 INFO L185 Difference]: Start difference. First operand has 1641 places, 6446 transitions, 95291 flow. Second operand 94 states and 4964 transitions. [2021-03-25 00:08:37,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1734 places, 7144 transitions, 132517 flow [2021-03-25 00:08:56,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1723 places, 7144 transitions, 125525 flow, removed 3095 selfloop flow, removed 11 redundant places. [2021-03-25 00:08:56,267 INFO L241 Difference]: Finished difference. Result has 1751 places, 6997 transitions, 115294 flow [2021-03-25 00:08:56,272 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=90498, PETRI_DIFFERENCE_MINUEND_PLACES=1630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3932, PETRI_DIFFERENCE_SUBTRAHEND_STATES=94, PETRI_FLOW=115294, PETRI_PLACES=1751, PETRI_TRANSITIONS=6997} [2021-03-25 00:08:56,272 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1698 predicate places. [2021-03-25 00:08:56,272 INFO L480 AbstractCegarLoop]: Abstraction has has 1751 places, 6997 transitions, 115294 flow [2021-03-25 00:08:56,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:08:56,272 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:08:56,272 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:08:56,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-25 00:08:56,273 INFO L428 AbstractCegarLoop]: === Iteration 27 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:08:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:08:56,273 INFO L82 PathProgramCache]: Analyzing trace with hash -2125702871, now seen corresponding path program 25 times [2021-03-25 00:08:56,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:08:56,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730905504] [2021-03-25 00:08:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:08:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:08:56,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:08:56,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:08:56,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:08:56,325 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:08:56,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:08:56,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:08:56,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:56,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:56,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:56,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:56,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:08:56,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:08:56,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:08:56,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:56,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:56,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:56,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:08:56,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:08:56,558 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:08:56,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:08:56,588 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:08:56,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:08:56,591 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 00:08:56,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730905504] [2021-03-25 00:08:56,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:08:56,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:08:56,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915693592] [2021-03-25 00:08:56,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:08:56,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:08:56,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:08:56,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:08:56,593 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:08:56,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1751 places, 6997 transitions, 115294 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:08:56,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:08:56,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:08:56,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:09:19,865 INFO L129 PetriNetUnfolder]: 9718/16632 cut-off events. [2021-03-25 00:09:19,865 INFO L130 PetriNetUnfolder]: For 866395/866436 co-relation queries the response was YES. [2021-03-25 00:09:20,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170845 conditions, 16632 events. 9718/16632 cut-off events. For 866395/866436 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 126664 event pairs, 402 based on Foata normal form. 26/15467 useless extension candidates. Maximal degree in co-relation 170338. Up to 12422 conditions per place. [2021-03-25 00:09:20,991 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 5902 selfloop transitions, 1270 changer transitions 0/7190 dead transitions. [2021-03-25 00:09:20,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1797 places, 7190 transitions, 135513 flow [2021-03-25 00:09:20,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-25 00:09:20,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-03-25 00:09:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2505 transitions. [2021-03-25 00:09:21,000 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6499740529320187 [2021-03-25 00:09:21,000 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2505 transitions. [2021-03-25 00:09:21,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2505 transitions. [2021-03-25 00:09:21,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:09:21,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2505 transitions. [2021-03-25 00:09:21,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 53.297872340425535) internal successors, (2505), 47 states have internal predecessors, (2505), 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 00:09:21,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 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 00:09:21,004 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 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 00:09:21,004 INFO L185 Difference]: Start difference. First operand has 1751 places, 6997 transitions, 115294 flow. Second operand 47 states and 2505 transitions. [2021-03-25 00:09:21,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1797 places, 7190 transitions, 135513 flow [2021-03-25 00:09:41,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1773 places, 7190 transitions, 125690 flow, removed 4535 selfloop flow, removed 24 redundant places. [2021-03-25 00:09:41,796 INFO L241 Difference]: Finished difference. Result has 1787 places, 7113 transitions, 112156 flow [2021-03-25 00:09:41,800 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=105487, PETRI_DIFFERENCE_MINUEND_PLACES=1727, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6997, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=112156, PETRI_PLACES=1787, PETRI_TRANSITIONS=7113} [2021-03-25 00:09:41,801 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1734 predicate places. [2021-03-25 00:09:41,801 INFO L480 AbstractCegarLoop]: Abstraction has has 1787 places, 7113 transitions, 112156 flow [2021-03-25 00:09:41,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:09:41,801 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:09:41,801 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:09:41,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-25 00:09:41,801 INFO L428 AbstractCegarLoop]: === Iteration 28 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:09:41,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:09:41,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1220000841, now seen corresponding path program 26 times [2021-03-25 00:09:41,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:09:41,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092880924] [2021-03-25 00:09:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:09:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:09:41,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:41,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:09:41,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:41,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:09:41,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:41,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:09:41,845 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:09:41,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:09:41,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:41,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:09:41,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:41,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:09:41,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:41,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:09:41,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:41,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:09:41,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:41,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:09:41,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:41,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:09:41,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:41,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:09:41,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:41,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:09:41,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:41,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:09:42,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:42,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:09:42,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:42,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:09:42,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:42,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:09:42,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:09:42,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:09:42,064 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:09:42,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:09:42,066 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 00:09:42,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092880924] [2021-03-25 00:09:42,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:09:42,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:09:42,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045907200] [2021-03-25 00:09:42,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:09:42,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:09:42,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:09:42,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:09:42,068 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:09:42,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1787 places, 7113 transitions, 112156 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:09:42,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:09:42,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:09:42,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:10:08,405 INFO L129 PetriNetUnfolder]: 10140/17478 cut-off events. [2021-03-25 00:10:08,406 INFO L130 PetriNetUnfolder]: For 948738/948779 co-relation queries the response was YES. [2021-03-25 00:10:09,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178770 conditions, 17478 events. 10140/17478 cut-off events. For 948738/948779 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 135640 event pairs, 410 based on Foata normal form. 26/16224 useless extension candidates. Maximal degree in co-relation 178251. Up to 12284 conditions per place. [2021-03-25 00:10:09,250 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 5749 selfloop transitions, 1882 changer transitions 0/7649 dead transitions. [2021-03-25 00:10:09,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1863 places, 7649 transitions, 144111 flow [2021-03-25 00:10:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-03-25 00:10:09,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-03-25 00:10:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 4081 transitions. [2021-03-25 00:10:09,252 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2021-03-25 00:10:09,252 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 4081 transitions. [2021-03-25 00:10:09,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 4081 transitions. [2021-03-25 00:10:09,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:10:09,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 4081 transitions. [2021-03-25 00:10:09,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 53.0) internal successors, (4081), 77 states have internal predecessors, (4081), 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 00:10:09,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 82.0) internal successors, (6396), 78 states have internal predecessors, (6396), 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 00:10:09,258 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 82.0) internal successors, (6396), 78 states have internal predecessors, (6396), 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 00:10:09,258 INFO L185 Difference]: Start difference. First operand has 1787 places, 7113 transitions, 112156 flow. Second operand 77 states and 4081 transitions. [2021-03-25 00:10:09,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1863 places, 7649 transitions, 144111 flow [2021-03-25 00:10:32,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1847 places, 7649 transitions, 139047 flow, removed 2037 selfloop flow, removed 16 redundant places. [2021-03-25 00:10:33,030 INFO L241 Difference]: Finished difference. Result has 1881 places, 7518 transitions, 126537 flow [2021-03-25 00:10:33,035 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=108338, PETRI_DIFFERENCE_MINUEND_PLACES=1771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1550, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=126537, PETRI_PLACES=1881, PETRI_TRANSITIONS=7518} [2021-03-25 00:10:33,035 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1828 predicate places. [2021-03-25 00:10:33,035 INFO L480 AbstractCegarLoop]: Abstraction has has 1881 places, 7518 transitions, 126537 flow [2021-03-25 00:10:33,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:10:33,035 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:10:33,036 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:10:33,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-25 00:10:33,036 INFO L428 AbstractCegarLoop]: === Iteration 29 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:10:33,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:10:33,036 INFO L82 PathProgramCache]: Analyzing trace with hash 748164273, now seen corresponding path program 27 times [2021-03-25 00:10:33,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:10:33,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513581133] [2021-03-25 00:10:33,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:10:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:10:33,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:10:33,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:10:33,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:10:33,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:10:33,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:10:33,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:10:33,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:10:33,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:10:33,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:10:33,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:10:33,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:10:33,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:10:33,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:10:33,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:10:33,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:10:33,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:10:33,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:10:33,270 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:10:33,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:10:33,292 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:10:33,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:10:33,294 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 00:10:33,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513581133] [2021-03-25 00:10:33,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:10:33,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 00:10:33,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296059464] [2021-03-25 00:10:33,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 00:10:33,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:10:33,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 00:10:33,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-25 00:10:33,296 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:10:33,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1881 places, 7518 transitions, 126537 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:10:33,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:10:33,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:10:33,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:11:03,803 INFO L129 PetriNetUnfolder]: 10157/17548 cut-off events. [2021-03-25 00:11:03,803 INFO L130 PetriNetUnfolder]: For 929999/930038 co-relation queries the response was YES. [2021-03-25 00:11:05,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180736 conditions, 17548 events. 10157/17548 cut-off events. For 929999/930038 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 136687 event pairs, 422 based on Foata normal form. 24/16278 useless extension candidates. Maximal degree in co-relation 180197. Up to 13162 conditions per place. [2021-03-25 00:11:05,485 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6456 selfloop transitions, 1109 changer transitions 0/7583 dead transitions. [2021-03-25 00:11:05,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1914 places, 7583 transitions, 143782 flow [2021-03-25 00:11:05,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-25 00:11:05,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-03-25 00:11:05,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1789 transitions. [2021-03-25 00:11:05,487 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6416786226685797 [2021-03-25 00:11:05,488 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1789 transitions. [2021-03-25 00:11:05,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1789 transitions. [2021-03-25 00:11:05,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:11:05,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1789 transitions. [2021-03-25 00:11:05,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.61764705882353) internal successors, (1789), 34 states have internal predecessors, (1789), 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 00:11:05,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 82.0) internal successors, (2870), 35 states have internal predecessors, (2870), 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 00:11:05,490 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 82.0) internal successors, (2870), 35 states have internal predecessors, (2870), 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 00:11:05,490 INFO L185 Difference]: Start difference. First operand has 1881 places, 7518 transitions, 126537 flow. Second operand 34 states and 1789 transitions. [2021-03-25 00:11:05,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1914 places, 7583 transitions, 143782 flow [2021-03-25 00:11:30,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1902 places, 7583 transitions, 135135 flow, removed 4003 selfloop flow, removed 12 redundant places. [2021-03-25 00:11:30,247 INFO L241 Difference]: Finished difference. Result has 1905 places, 7542 transitions, 121352 flow [2021-03-25 00:11:30,251 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=117894, PETRI_DIFFERENCE_MINUEND_PLACES=1869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=121352, PETRI_PLACES=1905, PETRI_TRANSITIONS=7542} [2021-03-25 00:11:30,251 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1852 predicate places. [2021-03-25 00:11:30,251 INFO L480 AbstractCegarLoop]: Abstraction has has 1905 places, 7542 transitions, 121352 flow [2021-03-25 00:11:30,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:11:30,251 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:11:30,252 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:11:30,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-25 00:11:30,252 INFO L428 AbstractCegarLoop]: === Iteration 30 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:11:30,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:11:30,252 INFO L82 PathProgramCache]: Analyzing trace with hash -480576767, now seen corresponding path program 28 times [2021-03-25 00:11:30,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:11:30,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089412362] [2021-03-25 00:11:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:11:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:11:30,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:11:30,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:11:30,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:11:30,292 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:11:30,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:11:30,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:11:30,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:11:30,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:11:30,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:11:30,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:11:30,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:11:30,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:11:30,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:11:30,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:11:30,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:11:30,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:11:30,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:11:30,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:11:30,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:11:30,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:11:30,550 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:11:30,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:11:30,553 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 00:11:30,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089412362] [2021-03-25 00:11:30,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:11:30,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:11:30,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680784089] [2021-03-25 00:11:30,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:11:30,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:11:30,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:11:30,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:11:30,555 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:11:30,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1905 places, 7542 transitions, 121352 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:11:30,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:11:30,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:11:30,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:11:42,405 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2021-03-25 00:12:00,015 INFO L129 PetriNetUnfolder]: 10619/18290 cut-off events. [2021-03-25 00:12:00,015 INFO L130 PetriNetUnfolder]: For 991881/991920 co-relation queries the response was YES. [2021-03-25 00:12:01,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192120 conditions, 18290 events. 10619/18290 cut-off events. For 991881/991920 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 142680 event pairs, 429 based on Foata normal form. 25/16976 useless extension candidates. Maximal degree in co-relation 191578. Up to 13251 conditions per place. [2021-03-25 00:12:01,595 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6301 selfloop transitions, 1699 changer transitions 0/8018 dead transitions. [2021-03-25 00:12:01,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1978 places, 8018 transitions, 157052 flow [2021-03-25 00:12:01,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-25 00:12:01,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-03-25 00:12:01,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 3970 transitions. [2021-03-25 00:12:01,598 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6542518127883982 [2021-03-25 00:12:01,598 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 3970 transitions. [2021-03-25 00:12:01,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 3970 transitions. [2021-03-25 00:12:01,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:12:01,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 3970 transitions. [2021-03-25 00:12:01,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 53.648648648648646) internal successors, (3970), 74 states have internal predecessors, (3970), 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 00:12:01,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 82.0) internal successors, (6150), 75 states have internal predecessors, (6150), 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 00:12:01,605 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 82.0) internal successors, (6150), 75 states have internal predecessors, (6150), 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 00:12:01,605 INFO L185 Difference]: Start difference. First operand has 1905 places, 7542 transitions, 121352 flow. Second operand 74 states and 3970 transitions. [2021-03-25 00:12:01,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1978 places, 8018 transitions, 157052 flow [2021-03-25 00:12:27,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1961 places, 8018 transitions, 154665 flow, removed 501 selfloop flow, removed 17 redundant places. [2021-03-25 00:12:27,173 INFO L241 Difference]: Finished difference. Result has 1982 places, 7963 transitions, 140907 flow [2021-03-25 00:12:27,177 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=118965, PETRI_DIFFERENCE_MINUEND_PLACES=1888, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=140907, PETRI_PLACES=1982, PETRI_TRANSITIONS=7963} [2021-03-25 00:12:27,178 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1929 predicate places. [2021-03-25 00:12:27,178 INFO L480 AbstractCegarLoop]: Abstraction has has 1982 places, 7963 transitions, 140907 flow [2021-03-25 00:12:27,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:12:27,178 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:12:27,178 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:12:27,178 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-25 00:12:27,178 INFO L428 AbstractCegarLoop]: === Iteration 31 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:12:27,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:12:27,179 INFO L82 PathProgramCache]: Analyzing trace with hash 962542149, now seen corresponding path program 29 times [2021-03-25 00:12:27,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:12:27,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699833038] [2021-03-25 00:12:27,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:12:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:12:27,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:12:27,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:12:27,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:12:27,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:12:27,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:12:27,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:12:27,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:12:27,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:12:27,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:12:27,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:12:27,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:12:27,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:12:27,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:12:27,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:12:27,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:12:27,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:12:27,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:12:27,465 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:12:27,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:12:27,495 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:12:27,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:12:27,498 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 00:12:27,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699833038] [2021-03-25 00:12:27,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:12:27,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:12:27,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682901794] [2021-03-25 00:12:27,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:12:27,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:12:27,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:12:27,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:12:27,500 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:12:27,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1982 places, 7963 transitions, 140907 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:12:27,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:12:27,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:12:27,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:12:59,301 INFO L129 PetriNetUnfolder]: 10662/18404 cut-off events. [2021-03-25 00:12:59,302 INFO L130 PetriNetUnfolder]: For 1049191/1049230 co-relation queries the response was YES. [2021-03-25 00:13:00,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197350 conditions, 18404 events. 10662/18404 cut-off events. For 1049191/1049230 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 144251 event pairs, 426 based on Foata normal form. 24/17069 useless extension candidates. Maximal degree in co-relation 196786. Up to 13857 conditions per place. [2021-03-25 00:13:00,509 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6955 selfloop transitions, 1080 changer transitions 0/8053 dead transitions. [2021-03-25 00:13:00,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2021 places, 8053 transitions, 159528 flow [2021-03-25 00:13:00,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-25 00:13:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-03-25 00:13:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2119 transitions. [2021-03-25 00:13:00,511 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6460365853658536 [2021-03-25 00:13:00,511 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2119 transitions. [2021-03-25 00:13:00,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2119 transitions. [2021-03-25 00:13:00,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:13:00,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2119 transitions. [2021-03-25 00:13:00,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 52.975) internal successors, (2119), 40 states have internal predecessors, (2119), 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 00:13:00,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 82.0) internal successors, (3362), 41 states have internal predecessors, (3362), 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 00:13:00,515 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 82.0) internal successors, (3362), 41 states have internal predecessors, (3362), 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 00:13:00,515 INFO L185 Difference]: Start difference. First operand has 1982 places, 7963 transitions, 140907 flow. Second operand 40 states and 2119 transitions. [2021-03-25 00:13:00,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2021 places, 8053 transitions, 159528 flow [2021-03-25 00:13:31,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2019 places, 8053 transitions, 147619 flow, removed 5883 selfloop flow, removed 2 redundant places. [2021-03-25 00:13:31,323 INFO L241 Difference]: Finished difference. Result has 2025 places, 8002 transitions, 132994 flow [2021-03-25 00:13:31,328 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=128998, PETRI_DIFFERENCE_MINUEND_PLACES=1980, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6903, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=132994, PETRI_PLACES=2025, PETRI_TRANSITIONS=8002} [2021-03-25 00:13:31,328 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1972 predicate places. [2021-03-25 00:13:31,328 INFO L480 AbstractCegarLoop]: Abstraction has has 2025 places, 8002 transitions, 132994 flow [2021-03-25 00:13:31,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:13:31,328 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:13:31,328 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:13:31,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-25 00:13:31,329 INFO L428 AbstractCegarLoop]: === Iteration 32 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:13:31,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:13:31,329 INFO L82 PathProgramCache]: Analyzing trace with hash -181623729, now seen corresponding path program 30 times [2021-03-25 00:13:31,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:13:31,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98614646] [2021-03-25 00:13:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:13:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:13:31,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:13:31,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:13:31,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:13:31,366 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:13:31,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:13:31,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:13:31,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:13:31,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:13:31,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:13:31,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:13:31,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:13:31,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:13:31,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:13:31,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:13:31,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:13:31,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:13:31,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:13:31,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:13:31,556 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:13:31,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:13:31,578 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:13:31,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:13:31,581 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 00:13:31,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98614646] [2021-03-25 00:13:31,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:13:31,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 00:13:31,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117011176] [2021-03-25 00:13:31,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 00:13:31,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:13:31,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 00:13:31,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-25 00:13:31,582 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:13:31,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2025 places, 8002 transitions, 132994 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:13:31,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:13:31,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:13:31,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:14:02,120 INFO L129 PetriNetUnfolder]: 10897/18826 cut-off events. [2021-03-25 00:14:02,121 INFO L130 PetriNetUnfolder]: For 1072829/1072870 co-relation queries the response was YES. [2021-03-25 00:14:03,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197718 conditions, 18826 events. 10897/18826 cut-off events. For 1072829/1072870 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 148359 event pairs, 414 based on Foata normal form. 26/17469 useless extension candidates. Maximal degree in co-relation 197147. Up to 13838 conditions per place. [2021-03-25 00:14:03,280 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6612 selfloop transitions, 1692 changer transitions 0/8322 dead transitions. [2021-03-25 00:14:03,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2079 places, 8322 transitions, 159670 flow [2021-03-25 00:14:03,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-03-25 00:14:03,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-03-25 00:14:03,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 2936 transitions. [2021-03-25 00:14:03,283 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6509977827050998 [2021-03-25 00:14:03,283 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 2936 transitions. [2021-03-25 00:14:03,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 2936 transitions. [2021-03-25 00:14:03,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:14:03,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 2936 transitions. [2021-03-25 00:14:03,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 53.38181818181818) internal successors, (2936), 55 states have internal predecessors, (2936), 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 00:14:03,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 82.0) internal successors, (4592), 56 states have internal predecessors, (4592), 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 00:14:03,287 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 82.0) internal successors, (4592), 56 states have internal predecessors, (4592), 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 00:14:03,287 INFO L185 Difference]: Start difference. First operand has 2025 places, 8002 transitions, 132994 flow. Second operand 55 states and 2936 transitions. [2021-03-25 00:14:03,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2079 places, 8322 transitions, 159670 flow [2021-03-25 00:14:30,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2064 places, 8322 transitions, 157668 flow, removed 561 selfloop flow, removed 15 redundant places. [2021-03-25 00:14:30,773 INFO L241 Difference]: Finished difference. Result has 2078 places, 8241 transitions, 143079 flow [2021-03-25 00:14:30,778 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=130992, PETRI_DIFFERENCE_MINUEND_PLACES=2010, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=143079, PETRI_PLACES=2078, PETRI_TRANSITIONS=8241} [2021-03-25 00:14:30,778 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 2025 predicate places. [2021-03-25 00:14:30,778 INFO L480 AbstractCegarLoop]: Abstraction has has 2078 places, 8241 transitions, 143079 flow [2021-03-25 00:14:30,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:14:30,778 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:14:30,778 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:14:30,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-25 00:14:30,779 INFO L428 AbstractCegarLoop]: === Iteration 33 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:14:30,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:14:30,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1645604727, now seen corresponding path program 31 times [2021-03-25 00:14:30,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:14:30,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133013125] [2021-03-25 00:14:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:14:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:14:30,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:14:30,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:14:30,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:14:30,815 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:14:30,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:14:30,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:14:30,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:14:30,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:14:30,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:14:30,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:14:30,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:14:30,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:14:30,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:14:30,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:14:30,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:14:30,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:14:30,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:14:30,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:14:31,025 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:14:31,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:14:31,054 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-25 00:14:31,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:14:31,057 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 00:14:31,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133013125] [2021-03-25 00:14:31,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:14:31,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 00:14:31,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559498992] [2021-03-25 00:14:31,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 00:14:31,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:14:31,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 00:14:31,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-25 00:14:31,059 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:14:31,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2078 places, 8241 transitions, 143079 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:14:31,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:14:31,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:14:31,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:15:02,861 INFO L129 PetriNetUnfolder]: 10935/18920 cut-off events. [2021-03-25 00:15:02,861 INFO L130 PetriNetUnfolder]: For 1123789/1123828 co-relation queries the response was YES. [2021-03-25 00:15:05,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202863 conditions, 18920 events. 10935/18920 cut-off events. For 1123789/1123828 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 149497 event pairs, 419 based on Foata normal form. 24/17549 useless extension candidates. Maximal degree in co-relation 202267. Up to 14053 conditions per place. [2021-03-25 00:15:05,666 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6972 selfloop transitions, 1371 changer transitions 0/8361 dead transitions. [2021-03-25 00:15:05,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2117 places, 8361 transitions, 163949 flow [2021-03-25 00:15:05,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-25 00:15:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-03-25 00:15:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2140 transitions. [2021-03-25 00:15:05,668 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6524390243902439 [2021-03-25 00:15:05,668 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2140 transitions. [2021-03-25 00:15:05,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2140 transitions. [2021-03-25 00:15:05,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:15:05,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2140 transitions. [2021-03-25 00:15:05,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.5) internal successors, (2140), 40 states have internal predecessors, (2140), 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 00:15:05,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 82.0) internal successors, (3362), 41 states have internal predecessors, (3362), 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 00:15:05,670 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 82.0) internal successors, (3362), 41 states have internal predecessors, (3362), 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 00:15:05,670 INFO L185 Difference]: Start difference. First operand has 2078 places, 8241 transitions, 143079 flow. Second operand 40 states and 2140 transitions. [2021-03-25 00:15:05,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2117 places, 8361 transitions, 163949 flow [2021-03-25 00:15:38,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2099 places, 8361 transitions, 159403 flow, removed 1730 selfloop flow, removed 18 redundant places. [2021-03-25 00:15:38,660 INFO L241 Difference]: Finished difference. Result has 2108 places, 8292 transitions, 143647 flow [2021-03-25 00:15:38,663 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138533, PETRI_DIFFERENCE_MINUEND_PLACES=2060, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6908, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=143647, PETRI_PLACES=2108, PETRI_TRANSITIONS=8292} [2021-03-25 00:15:38,663 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 2055 predicate places. [2021-03-25 00:15:38,663 INFO L480 AbstractCegarLoop]: Abstraction has has 2108 places, 8292 transitions, 143647 flow [2021-03-25 00:15:38,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:15:38,663 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:15:38,663 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:15:38,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-25 00:15:38,664 INFO L428 AbstractCegarLoop]: === Iteration 34 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:15:38,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:15:38,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1257673225, now seen corresponding path program 32 times [2021-03-25 00:15:38,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:15:38,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293894385] [2021-03-25 00:15:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:15:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:15:38,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:15:38,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:15:38,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:15:38,702 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 00:15:38,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:15:38,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:15:38,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:15:38,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:15:38,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:15:38,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:15:38,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:15:38,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:15:38,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:15:38,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:15:38,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:15:38,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:15:38,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:15:38,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:15:38,901 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:15:38,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:15:38,925 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:15:38,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:15:38,927 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 00:15:38,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293894385] [2021-03-25 00:15:38,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:15:38,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 00:15:38,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372154982] [2021-03-25 00:15:38,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-25 00:15:38,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:15:38,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-25 00:15:38,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-25 00:15:38,929 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:15:38,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2108 places, 8292 transitions, 143647 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:15:38,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:15:38,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:15:38,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:16:15,470 INFO L129 PetriNetUnfolder]: 11081/19182 cut-off events. [2021-03-25 00:16:15,470 INFO L130 PetriNetUnfolder]: For 1177344/1177385 co-relation queries the response was YES. [2021-03-25 00:16:16,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207943 conditions, 19182 events. 11081/19182 cut-off events. For 1177344/1177385 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 151957 event pairs, 448 based on Foata normal form. 26/17804 useless extension candidates. Maximal degree in co-relation 207337. Up to 14222 conditions per place. [2021-03-25 00:16:16,726 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 7033 selfloop transitions, 1488 changer transitions 0/8539 dead transitions. [2021-03-25 00:16:16,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2154 places, 8539 transitions, 168514 flow [2021-03-25 00:16:16,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-25 00:16:16,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-03-25 00:16:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2502 transitions. [2021-03-25 00:16:16,728 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6491956408925791 [2021-03-25 00:16:16,728 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2502 transitions. [2021-03-25 00:16:16,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2502 transitions. [2021-03-25 00:16:16,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:16:16,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2502 transitions. [2021-03-25 00:16:16,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 53.234042553191486) internal successors, (2502), 47 states have internal predecessors, (2502), 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 00:16:16,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 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 00:16:16,732 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 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 00:16:16,732 INFO L185 Difference]: Start difference. First operand has 2108 places, 8292 transitions, 143647 flow. Second operand 47 states and 2502 transitions. [2021-03-25 00:16:16,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2154 places, 8539 transitions, 168514 flow [2021-03-25 00:16:46,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2135 places, 8539 transitions, 165553 flow, removed 794 selfloop flow, removed 19 redundant places. [2021-03-25 00:16:46,367 INFO L241 Difference]: Finished difference. Result has 2150 places, 8440 transitions, 149216 flow [2021-03-25 00:16:46,371 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=140703, PETRI_DIFFERENCE_MINUEND_PLACES=2089, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6892, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=149216, PETRI_PLACES=2150, PETRI_TRANSITIONS=8440} [2021-03-25 00:16:46,371 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 2097 predicate places. [2021-03-25 00:16:46,371 INFO L480 AbstractCegarLoop]: Abstraction has has 2150 places, 8440 transitions, 149216 flow [2021-03-25 00:16:46,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 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 00:16:46,371 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:16:46,371 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:16:46,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-25 00:16:46,372 INFO L428 AbstractCegarLoop]: === Iteration 35 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 00:16:46,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:16:46,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1827037189, now seen corresponding path program 33 times [2021-03-25 00:16:46,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:16:46,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250312015] [2021-03-25 00:16:46,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:16:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:16:46,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:16:46,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:16:46,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 00:16:46,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:16:46,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:16:46,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:16:46,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:16:46,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:16:46,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:16:46,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:16:46,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:16:46,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:16:46,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:16:46,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:16:46,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:16:46,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:16:46,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 00:16:46,637 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-25 00:16:46,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 00:16:46,666 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-25 00:16:46,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 00:16:46,670 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 00:16:46,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250312015] [2021-03-25 00:16:46,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:16:46,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-25 00:16:46,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014179735] [2021-03-25 00:16:46,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 00:16:46,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:16:46,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 00:16:46,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-25 00:16:46,672 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-03-25 00:16:46,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2150 places, 8440 transitions, 149216 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 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 00:16:46,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:16:46,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-03-25 00:16:46,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-03-25 00:16:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-25 00:16:59,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-25 00:16:59,548 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-25 00:16:59,551 WARN L224 ceAbstractionStarter]: Timeout [2021-03-25 00:16:59,552 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 12:16:59 BasicIcfg [2021-03-25 00:16:59,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 00:16:59,552 INFO L168 Benchmark]: Toolchain (without parser) took 795456.74 ms. Allocated memory was 400.6 MB in the beginning and 12.3 GB in the end (delta: 11.9 GB). Free memory was 380.7 MB in the beginning and 3.7 GB in the end (delta: -3.3 GB). Peak memory consumption was 8.6 GB. Max. memory is 16.0 GB. [2021-03-25 00:16:59,552 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 400.6 MB. Free memory was 381.9 MB in the beginning and 381.9 MB in the end (delta: 79.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:16:59,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.62 ms. Allocated memory is still 400.6 MB. Free memory was 380.7 MB in the beginning and 379.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 00:16:59,553 INFO L168 Benchmark]: Boogie Preprocessor took 22.35 ms. Allocated memory is still 400.6 MB. Free memory was 379.2 MB in the beginning and 378.2 MB in the end (delta: 961.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:16:59,553 INFO L168 Benchmark]: RCFGBuilder took 213.45 ms. Allocated memory is still 400.6 MB. Free memory was 378.1 MB in the beginning and 364.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-25 00:16:59,553 INFO L168 Benchmark]: TraceAbstraction took 795192.05 ms. Allocated memory was 400.6 MB in the beginning and 12.3 GB in the end (delta: 11.9 GB). Free memory was 364.1 MB in the beginning and 3.7 GB in the end (delta: -3.4 GB). Peak memory consumption was 8.6 GB. Max. memory is 16.0 GB. [2021-03-25 00:16:59,553 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 400.6 MB. Free memory was 381.9 MB in the beginning and 381.9 MB in the end (delta: 79.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.62 ms. Allocated memory is still 400.6 MB. Free memory was 380.7 MB in the beginning and 379.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 22.35 ms. Allocated memory is still 400.6 MB. Free memory was 379.2 MB in the beginning and 378.2 MB in the end (delta: 961.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 213.45 ms. Allocated memory is still 400.6 MB. Free memory was 378.1 MB in the beginning and 364.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 795192.05 ms. Allocated memory was 400.6 MB in the beginning and 12.3 GB in the end (delta: 11.9 GB). Free memory was 364.1 MB in the beginning and 3.7 GB in the end (delta: -3.4 GB). Peak memory consumption was 8.6 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 418.6ms, 66 PlacesBefore, 53 PlacesAfterwards, 51 TransitionsBefore, 38 TransitionsAfterwards, 1336 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 1358 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 710, positive: 672, positive conditional: 0, positive unconditional: 672, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 631, positive: 604, positive conditional: 0, positive unconditional: 604, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 631, positive: 604, positive conditional: 0, positive unconditional: 604, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 631, positive: 600, positive conditional: 0, positive unconditional: 600, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 111, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 710, positive: 68, positive conditional: 0, positive unconditional: 68, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 631, unknown conditional: 0, unknown unconditional: 631] , Statistics on independence cache: Total cache size (in pairs): 213, Positive cache size: 198, Positive conditional cache size: 0, Positive unconditional cache size: 198, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 95). Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 42 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 26.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 795029.0ms, OverallIterations: 35, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 784760.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 505.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1706 SDtfs, 4177 SDslu, 2244 SDs, 0 SdLazy, 70932 SolverSat, 2968 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26625.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2061 GetRequests, 40 SyntacticMatches, 32 SemanticMatches, 1988 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41303 ImplicationChecksByTransitivity, 48269.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=149216occurred in iteration=34, InterpolantAutomatonStates: 1848, 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: 50.1ms SsaConstructionTime, 248.5ms SatisfiabilityAnalysisTime, 9175.1ms InterpolantComputationTime, 1190 NumberOfCodeBlocks, 1190 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1155 ConstructedInterpolants, 0 QuantifiedInterpolants, 14543 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 35 InterpolantComputations, 35 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown