/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 06:14:47,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 06:14:47,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 06:14:47,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 06:14:47,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 06:14:47,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 06:14:47,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 06:14:47,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 06:14:47,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 06:14:47,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 06:14:47,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 06:14:47,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-03-11 06:14:47,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 06:14:47,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 06:14:47,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 06:14:47,836 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-NoLbe.epf [2021-03-11 06:14:47,865 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 06:14:47,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 06:14:47,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 06:14:47,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 06:14:47,869 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 06:14:47,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 06:14:47,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 06:14:47,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 06:14:47,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 06:14:47,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 06:14:47,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 06:14:47,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 06:14:47,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 06:14:47,870 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 06:14:47,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 06:14:47,871 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 06:14:47,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 06:14:47,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 06:14:47,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 06:14:47,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 06:14:47,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 06:14:47,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 06:14:47,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 06:14:47,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 06:14:47,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 06:14:47,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 06:14:47,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 06:14:47,872 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 06:14:47,872 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 06:14:47,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 06:14:48,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 06:14:48,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 06:14:48,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 06:14:48,170 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 06:14:48,171 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 06:14:48,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-03-11 06:14:48,172 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-03-11 06:14:48,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 06:14:48,522 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 06:14:48,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 06:14:48,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 06:14:48,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 06:14:48,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:14:48" (1/1) ... [2021-03-11 06:14:48,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:14:48" (1/1) ... [2021-03-11 06:14:48,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 06:14:48,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 06:14:48,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 06:14:48,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 06:14:48,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:14:48" (1/1) ... [2021-03-11 06:14:48,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:14:48" (1/1) ... [2021-03-11 06:14:48,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:14:48" (1/1) ... [2021-03-11 06:14:48,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:14:48" (1/1) ... [2021-03-11 06:14:48,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:14:48" (1/1) ... [2021-03-11 06:14:48,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:14:48" (1/1) ... [2021-03-11 06:14:48,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:14:48" (1/1) ... [2021-03-11 06:14:48,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 06:14:48,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 06:14:48,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 06:14:48,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 06:14:48,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:14:48" (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 [2021-03-11 06:14:48,611 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 06:14:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 06:14:48,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 06:14:48,613 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 06:14:48,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 06:14:48,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 06:14:48,613 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 06:14:48,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 06:14:48,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 06:14:48,613 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 06:14:48,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 06:14:48,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 06:14:48,614 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-11 06:14:48,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-11 06:14:48,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-11 06:14:48,614 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-11 06:14:48,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-11 06:14:48,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-11 06:14:48,616 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-11 06:14:48,616 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-11 06:14:48,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-11 06:14:48,617 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 06:14:48,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 06:14:48,800 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 06:14:48,801 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:14:48 BoogieIcfgContainer [2021-03-11 06:14:48,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 06:14:48,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 06:14:48,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 06:14:48,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 06:14:48,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:14:48" (1/2) ... [2021-03-11 06:14:48,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b07e325 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 06:14:48, skipping insertion in model container [2021-03-11 06:14:48,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:14:48" (2/2) ... [2021-03-11 06:14:48,806 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-03-11 06:14:48,810 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 06:14:48,812 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 06:14:48,813 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 06:14:48,875 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-03-11 06:14:48,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-03-11 06:14:48,900 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 06:14:48,900 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 06:14:48,900 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 06:14:48,900 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 06:14:48,900 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 06:14:48,901 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 06:14:48,901 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 06:14:48,901 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 06:14:48,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 65 transitions, 202 flow [2021-03-11 06:14:48,944 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-03-11 06:14:48,944 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-11 06:14:48,948 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. [2021-03-11 06:14:48,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 65 transitions, 202 flow [2021-03-11 06:14:48,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 51 transitions, 150 flow [2021-03-11 06:14:48,986 INFO L129 PetriNetUnfolder]: 4/50 cut-off events. [2021-03-11 06:14:48,986 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-11 06:14:48,986 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:48,987 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:48,987 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]=== [2021-03-11 06:14:48,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:48,991 INFO L82 PathProgramCache]: Analyzing trace with hash -925790636, now seen corresponding path program 1 times [2021-03-11 06:14:48,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:48,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810012856] [2021-03-11 06:14:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:49,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:49,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 06:14:49,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:14:49,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810012856] [2021-03-11 06:14:49,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:49,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 06:14:49,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154219435] [2021-03-11 06:14:49,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 06:14:49,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:49,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 06:14:49,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 06:14:49,134 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 69 [2021-03-11 06:14:49,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:49,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 69 [2021-03-11 06:14:49,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:49,185 INFO L129 PetriNetUnfolder]: 6/58 cut-off events. [2021-03-11 06:14:49,185 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-11 06:14:49,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 58 events. 6/58 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 1 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 78. Up to 6 conditions per place. [2021-03-11 06:14:49,189 INFO L132 encePairwiseOnDemand]: 66/69 looper letters, 2 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2021-03-11 06:14:49,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 51 transitions, 158 flow [2021-03-11 06:14:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 06:14:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 06:14:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-03-11 06:14:49,200 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9516908212560387 [2021-03-11 06:14:49,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-03-11 06:14:49,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-03-11 06:14:49,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:49,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-03-11 06:14:49,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,216 INFO L185 Difference]: Start difference. First operand has 66 places, 51 transitions, 150 flow. Second operand 3 states and 197 transitions. [2021-03-11 06:14:49,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 51 transitions, 158 flow [2021-03-11 06:14:49,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 126 flow, removed 0 selfloop flow, removed 12 redundant places. [2021-03-11 06:14:49,226 INFO L241 Difference]: Finished difference. Result has 57 places, 51 transitions, 126 flow [2021-03-11 06:14:49,227 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2021-03-11 06:14:49,228 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2021-03-11 06:14:49,228 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 126 flow [2021-03-11 06:14:49,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,229 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:49,229 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:49,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 06:14:49,229 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]=== [2021-03-11 06:14:49,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:49,231 INFO L82 PathProgramCache]: Analyzing trace with hash -566835351, now seen corresponding path program 1 times [2021-03-11 06:14:49,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:49,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414769897] [2021-03-11 06:14:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:49,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:49,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 06:14:49,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:14:49,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414769897] [2021-03-11 06:14:49,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:49,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 06:14:49,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73628806] [2021-03-11 06:14:49,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 06:14:49,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:49,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 06:14:49,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 06:14:49,277 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 69 [2021-03-11 06:14:49,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:49,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 69 [2021-03-11 06:14:49,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:49,299 INFO L129 PetriNetUnfolder]: 6/58 cut-off events. [2021-03-11 06:14:49,300 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 06:14:49,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 58 events. 6/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 1 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 65. Up to 6 conditions per place. [2021-03-11 06:14:49,300 INFO L132 encePairwiseOnDemand]: 66/69 looper letters, 2 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2021-03-11 06:14:49,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 134 flow [2021-03-11 06:14:49,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 06:14:49,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 06:14:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-03-11 06:14:49,307 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9516908212560387 [2021-03-11 06:14:49,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-03-11 06:14:49,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-03-11 06:14:49,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:49,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-03-11 06:14:49,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,309 INFO L185 Difference]: Start difference. First operand has 57 places, 51 transitions, 126 flow. Second operand 3 states and 197 transitions. [2021-03-11 06:14:49,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 134 flow [2021-03-11 06:14:49,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 06:14:49,310 INFO L241 Difference]: Finished difference. Result has 58 places, 51 transitions, 130 flow [2021-03-11 06:14:49,310 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2021-03-11 06:14:49,311 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2021-03-11 06:14:49,318 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 130 flow [2021-03-11 06:14:49,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,319 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:49,319 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:49,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 06:14:49,319 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]=== [2021-03-11 06:14:49,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:49,320 INFO L82 PathProgramCache]: Analyzing trace with hash 297539339, now seen corresponding path program 1 times [2021-03-11 06:14:49,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:49,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171943993] [2021-03-11 06:14:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:49,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:49,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 06:14:49,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:14:49,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171943993] [2021-03-11 06:14:49,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:49,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 06:14:49,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102942999] [2021-03-11 06:14:49,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 06:14:49,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:49,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 06:14:49,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 06:14:49,341 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 69 [2021-03-11 06:14:49,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:49,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 69 [2021-03-11 06:14:49,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:49,362 INFO L129 PetriNetUnfolder]: 5/56 cut-off events. [2021-03-11 06:14:49,362 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 06:14:49,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 56 events. 5/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 1 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 66. Up to 6 conditions per place. [2021-03-11 06:14:49,364 INFO L132 encePairwiseOnDemand]: 66/69 looper letters, 2 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2021-03-11 06:14:49,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 138 flow [2021-03-11 06:14:49,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 06:14:49,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 06:14:49,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-03-11 06:14:49,367 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9516908212560387 [2021-03-11 06:14:49,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-03-11 06:14:49,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-03-11 06:14:49,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:49,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-03-11 06:14:49,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,371 INFO L185 Difference]: Start difference. First operand has 58 places, 51 transitions, 130 flow. Second operand 3 states and 197 transitions. [2021-03-11 06:14:49,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 138 flow [2021-03-11 06:14:49,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 131 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 06:14:49,374 INFO L241 Difference]: Finished difference. Result has 58 places, 51 transitions, 131 flow [2021-03-11 06:14:49,374 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2021-03-11 06:14:49,374 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2021-03-11 06:14:49,374 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 131 flow [2021-03-11 06:14:49,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,375 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:49,375 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:49,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 06:14:49,376 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]=== [2021-03-11 06:14:49,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:49,377 INFO L82 PathProgramCache]: Analyzing trace with hash -177396129, now seen corresponding path program 2 times [2021-03-11 06:14:49,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:49,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39081301] [2021-03-11 06:14:49,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:49,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:49,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 06:14:49,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:14:49,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39081301] [2021-03-11 06:14:49,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:49,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 06:14:49,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501258253] [2021-03-11 06:14:49,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 06:14:49,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:49,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 06:14:49,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 06:14:49,421 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 69 [2021-03-11 06:14:49,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:49,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 69 [2021-03-11 06:14:49,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:49,446 INFO L129 PetriNetUnfolder]: 6/58 cut-off events. [2021-03-11 06:14:49,447 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-11 06:14:49,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 58 events. 6/58 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 1 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2021-03-11 06:14:49,448 INFO L132 encePairwiseOnDemand]: 66/69 looper letters, 2 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2021-03-11 06:14:49,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 139 flow [2021-03-11 06:14:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 06:14:49,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 06:14:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-03-11 06:14:49,450 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9516908212560387 [2021-03-11 06:14:49,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-03-11 06:14:49,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-03-11 06:14:49,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:49,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-03-11 06:14:49,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,453 INFO L185 Difference]: Start difference. First operand has 58 places, 51 transitions, 131 flow. Second operand 3 states and 197 transitions. [2021-03-11 06:14:49,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 139 flow [2021-03-11 06:14:49,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 06:14:49,456 INFO L241 Difference]: Finished difference. Result has 58 places, 51 transitions, 132 flow [2021-03-11 06:14:49,456 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2021-03-11 06:14:49,456 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2021-03-11 06:14:49,456 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 132 flow [2021-03-11 06:14:49,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,457 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:49,457 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:49,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 06:14:49,457 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]=== [2021-03-11 06:14:49,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:49,458 INFO L82 PathProgramCache]: Analyzing trace with hash 510422679, now seen corresponding path program 3 times [2021-03-11 06:14:49,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:49,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924894369] [2021-03-11 06:14:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:49,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:49,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:49,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:49,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:49,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:49,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:49,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:49,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:49,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:49,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:49,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:49,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:49,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:49,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:49,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:49,925 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:14:49,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:14:49,931 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:14:49,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:14:49,959 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 06:14:49,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:49,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:49,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:14:49,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924894369] [2021-03-11 06:14:49,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:49,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 06:14:49,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735147091] [2021-03-11 06:14:49,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 06:14:49,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:49,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 06:14:49,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-03-11 06:14:49,965 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:14:49,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 132 flow. Second operand has 16 states, 16 states have (on average 49.25) internal successors, (788), 16 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:49,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:49,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:14:49,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:51,223 INFO L129 PetriNetUnfolder]: 825/1719 cut-off events. [2021-03-11 06:14:51,224 INFO L130 PetriNetUnfolder]: For 222/222 co-relation queries the response was YES. [2021-03-11 06:14:51,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3055 conditions, 1719 events. 825/1719 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10657 event pairs, 326 based on Foata normal form. 1/1587 useless extension candidates. Maximal degree in co-relation 3024. Up to 907 conditions per place. [2021-03-11 06:14:51,234 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 59 selfloop transitions, 74 changer transitions 0/164 dead transitions. [2021-03-11 06:14:51,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 164 transitions, 672 flow [2021-03-11 06:14:51,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-11 06:14:51,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-03-11 06:14:51,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1430 transitions. [2021-03-11 06:14:51,237 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7675791733762748 [2021-03-11 06:14:51,237 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1430 transitions. [2021-03-11 06:14:51,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1430 transitions. [2021-03-11 06:14:51,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:51,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1430 transitions. [2021-03-11 06:14:51,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 52.96296296296296) internal successors, (1430), 27 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:51,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 69.0) internal successors, (1932), 28 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:51,243 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 69.0) internal successors, (1932), 28 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:51,243 INFO L185 Difference]: Start difference. First operand has 58 places, 51 transitions, 132 flow. Second operand 27 states and 1430 transitions. [2021-03-11 06:14:51,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 164 transitions, 672 flow [2021-03-11 06:14:51,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 164 transitions, 646 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 06:14:51,247 INFO L241 Difference]: Finished difference. Result has 97 places, 124 transitions, 542 flow [2021-03-11 06:14:51,248 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=542, PETRI_PLACES=97, PETRI_TRANSITIONS=124} [2021-03-11 06:14:51,248 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 31 predicate places. [2021-03-11 06:14:51,248 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 124 transitions, 542 flow [2021-03-11 06:14:51,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 49.25) internal successors, (788), 16 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:51,248 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:51,248 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:51,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 06:14:51,249 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]=== [2021-03-11 06:14:51,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:51,249 INFO L82 PathProgramCache]: Analyzing trace with hash 959087391, now seen corresponding path program 4 times [2021-03-11 06:14:51,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:51,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517376422] [2021-03-11 06:14:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:51,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:51,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:51,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:51,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:51,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:51,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:51,306 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 06:14:51,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:51,312 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-11 06:14:51,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:51,319 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-03-11 06:14:51,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:51,329 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-03-11 06:14:51,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:51,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:51,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:51,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:51,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:51,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:51,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:51,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:51,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:51,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:51,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:51,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:51,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:51,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:51,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:51,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:51,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:51,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:51,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:51,518 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:14:51,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:14:51,546 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 06:14:51,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:51,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:51,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:14:51,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517376422] [2021-03-11 06:14:51,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:51,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 06:14:51,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385536734] [2021-03-11 06:14:51,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 06:14:51,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:51,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 06:14:51,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-11 06:14:51,555 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:14:51,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 124 transitions, 542 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) [2021-03-11 06:14:51,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:51,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:14:51,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:14:57,314 INFO L129 PetriNetUnfolder]: 1561/3227 cut-off events. [2021-03-11 06:14:57,314 INFO L130 PetriNetUnfolder]: For 2713/2743 co-relation queries the response was YES. [2021-03-11 06:14:57,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8403 conditions, 3227 events. 1561/3227 cut-off events. For 2713/2743 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 21847 event pairs, 294 based on Foata normal form. 2/2978 useless extension candidates. Maximal degree in co-relation 8352. Up to 1384 conditions per place. [2021-03-11 06:14:57,340 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 166 selfloop transitions, 559 changer transitions 2/758 dead transitions. [2021-03-11 06:14:57,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 758 transitions, 4788 flow [2021-03-11 06:14:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-03-11 06:14:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2021-03-11 06:14:57,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 6941 transitions. [2021-03-11 06:14:57,350 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.767894678614891 [2021-03-11 06:14:57,351 INFO L72 ComplementDD]: Start complementDD. Operand 131 states and 6941 transitions. [2021-03-11 06:14:57,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 6941 transitions. [2021-03-11 06:14:57,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:14:57,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 131 states and 6941 transitions. [2021-03-11 06:14:57,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 132 states, 131 states have (on average 52.98473282442748) internal successors, (6941), 131 states have internal predecessors, (6941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:57,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 132 states, 132 states have (on average 69.0) internal successors, (9108), 132 states have internal predecessors, (9108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:57,381 INFO L81 ComplementDD]: Finished complementDD. Result has 132 states, 132 states have (on average 69.0) internal successors, (9108), 132 states have internal predecessors, (9108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:14:57,381 INFO L185 Difference]: Start difference. First operand has 97 places, 124 transitions, 542 flow. Second operand 131 states and 6941 transitions. [2021-03-11 06:14:57,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 758 transitions, 4788 flow [2021-03-11 06:14:57,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 758 transitions, 4788 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 06:14:57,402 INFO L241 Difference]: Finished difference. Result has 245 places, 730 transitions, 4686 flow [2021-03-11 06:14:57,402 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=131, PETRI_FLOW=4686, PETRI_PLACES=245, PETRI_TRANSITIONS=730} [2021-03-11 06:14:57,403 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 179 predicate places. [2021-03-11 06:14:57,403 INFO L480 AbstractCegarLoop]: Abstraction has has 245 places, 730 transitions, 4686 flow [2021-03-11 06:14:57,403 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) [2021-03-11 06:14:57,403 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:14:57,403 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:14:57,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 06:14:57,403 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]=== [2021-03-11 06:14:57,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:14:57,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1599941973, now seen corresponding path program 5 times [2021-03-11 06:14:57,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:14:57,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317010741] [2021-03-11 06:14:57,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:14:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:14:57,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:57,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:14:57,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:57,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:57,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:57,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:57,491 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 06:14:57,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:57,498 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-11 06:14:57,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:57,506 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-11 06:14:57,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:14:57,514 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-03-11 06:14:57,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:57,528 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-11 06:14:57,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 06:14:57,540 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-11 06:14:57,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 06:14:57,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:57,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:57,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:57,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:57,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:57,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:57,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:57,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:57,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:57,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:14:57,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:57,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:57,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:57,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:14:57,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:14:57,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:14:57,697 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 06:14:57,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:14:57,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:14:57,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:14:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:14:57,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317010741] [2021-03-11 06:14:57,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:14:57,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 06:14:57,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452006791] [2021-03-11 06:14:57,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 06:14:57,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:14:57,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 06:14:57,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2021-03-11 06:14:57,702 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:14:57,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 730 transitions, 4686 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) [2021-03-11 06:14:57,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:14:57,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:14:57,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:15:03,980 INFO L129 PetriNetUnfolder]: 3260/6900 cut-off events. [2021-03-11 06:15:03,980 INFO L130 PetriNetUnfolder]: For 11501/11828 co-relation queries the response was YES. [2021-03-11 06:15:04,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22620 conditions, 6900 events. 3260/6900 cut-off events. For 11501/11828 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 54739 event pairs, 248 based on Foata normal form. 63/6400 useless extension candidates. Maximal degree in co-relation 22396. Up to 2602 conditions per place. [2021-03-11 06:15:04,054 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 818 selfloop transitions, 1527 changer transitions 4/2380 dead transitions. [2021-03-11 06:15:04,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 2380 transitions, 20419 flow [2021-03-11 06:15:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-03-11 06:15:04,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-03-11 06:15:04,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 7171 transitions. [2021-03-11 06:15:04,061 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7698336017176597 [2021-03-11 06:15:04,061 INFO L72 ComplementDD]: Start complementDD. Operand 135 states and 7171 transitions. [2021-03-11 06:15:04,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 7171 transitions. [2021-03-11 06:15:04,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:15:04,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 135 states and 7171 transitions. [2021-03-11 06:15:04,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 136 states, 135 states have (on average 53.11851851851852) internal successors, (7171), 135 states have internal predecessors, (7171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:15:04,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 136 states, 136 states have (on average 69.0) internal successors, (9384), 136 states have internal predecessors, (9384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:15:04,136 INFO L81 ComplementDD]: Finished complementDD. Result has 136 states, 136 states have (on average 69.0) internal successors, (9384), 136 states have internal predecessors, (9384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:15:04,137 INFO L185 Difference]: Start difference. First operand has 245 places, 730 transitions, 4686 flow. Second operand 135 states and 7171 transitions. [2021-03-11 06:15:04,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 2380 transitions, 20419 flow [2021-03-11 06:15:04,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 2380 transitions, 17015 flow, removed 1641 selfloop flow, removed 4 redundant places. [2021-03-11 06:15:04,317 INFO L241 Difference]: Finished difference. Result has 444 places, 2256 transitions, 17486 flow [2021-03-11 06:15:04,318 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=3405, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=17486, PETRI_PLACES=444, PETRI_TRANSITIONS=2256} [2021-03-11 06:15:04,318 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 378 predicate places. [2021-03-11 06:15:04,318 INFO L480 AbstractCegarLoop]: Abstraction has has 444 places, 2256 transitions, 17486 flow [2021-03-11 06:15:04,319 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) [2021-03-11 06:15:04,319 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:15:04,319 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:15:04,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 06:15:04,319 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]=== [2021-03-11 06:15:04,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:15:04,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1071384681, now seen corresponding path program 6 times [2021-03-11 06:15:04,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:15:04,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751189371] [2021-03-11 06:15:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:15:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:15:04,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:15:04,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:15:04,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:15:04,366 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 06:15:04,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:15:04,372 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-11 06:15:04,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:15:04,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:04,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:04,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:04,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:04,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:04,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:04,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:04,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:04,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:04,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:04,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:04,564 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:15:04,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:15:04,589 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 06:15:04,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:04,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:04,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:15:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:15:04,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751189371] [2021-03-11 06:15:04,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:15:04,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 06:15:04,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971021675] [2021-03-11 06:15:04,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 06:15:04,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:15:04,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 06:15:04,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-11 06:15:04,596 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:15:04,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 2256 transitions, 17486 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) [2021-03-11 06:15:04,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:15:04,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:15:04,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:15:10,025 INFO L129 PetriNetUnfolder]: 3766/7983 cut-off events. [2021-03-11 06:15:10,025 INFO L130 PetriNetUnfolder]: For 19509/20267 co-relation queries the response was YES. [2021-03-11 06:15:10,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30366 conditions, 7983 events. 3766/7983 cut-off events. For 19509/20267 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 65314 event pairs, 364 based on Foata normal form. 36/7384 useless extension candidates. Maximal degree in co-relation 30200. Up to 4464 conditions per place. [2021-03-11 06:15:10,126 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 2163 selfloop transitions, 557 changer transitions 0/2751 dead transitions. [2021-03-11 06:15:10,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 2751 transitions, 27323 flow [2021-03-11 06:15:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-03-11 06:15:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-03-11 06:15:10,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 4740 transitions. [2021-03-11 06:15:10,131 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7632850241545893 [2021-03-11 06:15:10,131 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 4740 transitions. [2021-03-11 06:15:10,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 4740 transitions. [2021-03-11 06:15:10,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:15:10,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 4740 transitions. [2021-03-11 06:15:10,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 52.666666666666664) internal successors, (4740), 90 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:15:10,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 69.0) internal successors, (6279), 91 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:15:10,145 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 69.0) internal successors, (6279), 91 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:15:10,145 INFO L185 Difference]: Start difference. First operand has 444 places, 2256 transitions, 17486 flow. Second operand 90 states and 4740 transitions. [2021-03-11 06:15:10,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 2751 transitions, 27323 flow [2021-03-11 06:15:10,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 2751 transitions, 25428 flow, removed 943 selfloop flow, removed 3 redundant places. [2021-03-11 06:15:10,629 INFO L241 Difference]: Finished difference. Result has 560 places, 2693 transitions, 21408 flow [2021-03-11 06:15:10,631 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=15875, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2026, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=21408, PETRI_PLACES=560, PETRI_TRANSITIONS=2693} [2021-03-11 06:15:10,631 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 494 predicate places. [2021-03-11 06:15:10,631 INFO L480 AbstractCegarLoop]: Abstraction has has 560 places, 2693 transitions, 21408 flow [2021-03-11 06:15:10,632 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) [2021-03-11 06:15:10,632 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:15:10,632 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:15:10,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 06:15:10,632 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]=== [2021-03-11 06:15:10,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:15:10,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1914708531, now seen corresponding path program 7 times [2021-03-11 06:15:10,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:15:10,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45078734] [2021-03-11 06:15:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:15:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:15:10,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:15:10,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:15:10,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:15:10,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:10,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:10,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:10,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:10,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:10,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:10,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:10,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:15:10,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:15:10,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:15:10,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:10,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:10,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:10,875 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:15:10,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:15:10,899 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 06:15:10,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:10,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:10,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:15:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:15:10,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45078734] [2021-03-11 06:15:10,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:15:10,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 06:15:10,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889222147] [2021-03-11 06:15:10,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 06:15:10,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:15:10,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 06:15:10,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-11 06:15:10,903 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:15:10,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 2693 transitions, 21408 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) [2021-03-11 06:15:10,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:15:10,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:15:10,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:15:16,289 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 06:15:19,407 INFO L129 PetriNetUnfolder]: 4569/9618 cut-off events. [2021-03-11 06:15:19,407 INFO L130 PetriNetUnfolder]: For 43242/44170 co-relation queries the response was YES. [2021-03-11 06:15:19,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40831 conditions, 9618 events. 4569/9618 cut-off events. For 43242/44170 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 81239 event pairs, 287 based on Foata normal form. 46/8925 useless extension candidates. Maximal degree in co-relation 40637. Up to 5223 conditions per place. [2021-03-11 06:15:19,751 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 2461 selfloop transitions, 986 changer transitions 14/3492 dead transitions. [2021-03-11 06:15:19,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 3492 transitions, 37706 flow [2021-03-11 06:15:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2021-03-11 06:15:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-03-11 06:15:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 7406 transitions. [2021-03-11 06:15:19,758 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7612293144208038 [2021-03-11 06:15:19,758 INFO L72 ComplementDD]: Start complementDD. Operand 141 states and 7406 transitions. [2021-03-11 06:15:19,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 7406 transitions. [2021-03-11 06:15:19,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:15:19,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 141 states and 7406 transitions. [2021-03-11 06:15:19,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 142 states, 141 states have (on average 52.52482269503546) internal successors, (7406), 141 states have internal predecessors, (7406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:15:19,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 142 states, 142 states have (on average 69.0) internal successors, (9798), 142 states have internal predecessors, (9798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:15:19,781 INFO L81 ComplementDD]: Finished complementDD. Result has 142 states, 142 states have (on average 69.0) internal successors, (9798), 142 states have internal predecessors, (9798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:15:19,781 INFO L185 Difference]: Start difference. First operand has 560 places, 2693 transitions, 21408 flow. Second operand 141 states and 7406 transitions. [2021-03-11 06:15:19,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 3492 transitions, 37706 flow [2021-03-11 06:15:20,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 3492 transitions, 36135 flow, removed 784 selfloop flow, removed 1 redundant places. [2021-03-11 06:15:20,843 INFO L241 Difference]: Finished difference. Result has 719 places, 3414 transitions, 31381 flow [2021-03-11 06:15:20,845 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=19971, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=141, PETRI_FLOW=31381, PETRI_PLACES=719, PETRI_TRANSITIONS=3414} [2021-03-11 06:15:20,845 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 653 predicate places. [2021-03-11 06:15:20,845 INFO L480 AbstractCegarLoop]: Abstraction has has 719 places, 3414 transitions, 31381 flow [2021-03-11 06:15:20,846 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) [2021-03-11 06:15:20,846 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:15:20,846 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:15:20,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 06:15:20,846 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]=== [2021-03-11 06:15:20,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:15:20,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1039123207, now seen corresponding path program 8 times [2021-03-11 06:15:20,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:15:20,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748709750] [2021-03-11 06:15:20,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:15:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:15:20,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:20,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:15:20,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:20,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:15:20,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:20,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:15:20,899 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 06:15:20,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:15:20,906 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-11 06:15:20,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:15:20,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:20,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:20,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:20,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:20,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:20,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:20,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:20,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:20,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:20,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:20,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:20,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:15:20,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:20,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:15:21,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:21,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:15:21,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:21,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:15:21,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:21,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:21,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:21,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:21,098 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:15:21,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:15:21,124 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 06:15:21,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:21,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:21,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:15:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:15:21,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748709750] [2021-03-11 06:15:21,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:15:21,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 06:15:21,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899078996] [2021-03-11 06:15:21,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 06:15:21,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:15:21,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 06:15:21,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-11 06:15:21,129 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:15:21,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 3414 transitions, 31381 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) [2021-03-11 06:15:21,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:15:21,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:15:21,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:15:29,862 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-03-11 06:15:34,961 INFO L129 PetriNetUnfolder]: 7980/16879 cut-off events. [2021-03-11 06:15:34,961 INFO L130 PetriNetUnfolder]: For 75128/76996 co-relation queries the response was YES. [2021-03-11 06:15:35,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73120 conditions, 16879 events. 7980/16879 cut-off events. For 75128/76996 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 157525 event pairs, 250 based on Foata normal form. 382/15930 useless extension candidates. Maximal degree in co-relation 72834. Up to 7091 conditions per place. [2021-03-11 06:15:35,468 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 3064 selfloop transitions, 4171 changer transitions 20/7286 dead transitions. [2021-03-11 06:15:35,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 890 places, 7286 transitions, 81449 flow [2021-03-11 06:15:35,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2021-03-11 06:15:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2021-03-11 06:15:35,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 9173 transitions. [2021-03-11 06:15:35,475 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7684510345983078 [2021-03-11 06:15:35,475 INFO L72 ComplementDD]: Start complementDD. Operand 173 states and 9173 transitions. [2021-03-11 06:15:35,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 9173 transitions. [2021-03-11 06:15:35,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:15:35,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 173 states and 9173 transitions. [2021-03-11 06:15:35,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 174 states, 173 states have (on average 53.02312138728324) internal successors, (9173), 173 states have internal predecessors, (9173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:15:35,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 174 states, 174 states have (on average 69.0) internal successors, (12006), 174 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:15:35,502 INFO L81 ComplementDD]: Finished complementDD. Result has 174 states, 174 states have (on average 69.0) internal successors, (12006), 174 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:15:35,502 INFO L185 Difference]: Start difference. First operand has 719 places, 3414 transitions, 31381 flow. Second operand 173 states and 9173 transitions. [2021-03-11 06:15:35,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 890 places, 7286 transitions, 81449 flow [2021-03-11 06:15:37,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 888 places, 7286 transitions, 75590 flow, removed 2922 selfloop flow, removed 2 redundant places. [2021-03-11 06:15:37,639 INFO L241 Difference]: Finished difference. Result has 982 places, 7039 transitions, 74899 flow [2021-03-11 06:15:37,642 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=26046, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=173, PETRI_FLOW=74899, PETRI_PLACES=982, PETRI_TRANSITIONS=7039} [2021-03-11 06:15:37,643 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 916 predicate places. [2021-03-11 06:15:37,643 INFO L480 AbstractCegarLoop]: Abstraction has has 982 places, 7039 transitions, 74899 flow [2021-03-11 06:15:37,643 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) [2021-03-11 06:15:37,643 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:15:37,643 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:15:37,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 06:15:37,643 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]=== [2021-03-11 06:15:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:15:37,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1295906601, now seen corresponding path program 9 times [2021-03-11 06:15:37,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:15:37,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861675605] [2021-03-11 06:15:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:15:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:15:37,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:15:37,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:15:37,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:15:37,702 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 06:15:37,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:15:37,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:37,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:37,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:37,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:37,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:37,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:37,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:37,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:15:37,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:15:37,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:37,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:37,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:15:37,896 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:15:37,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:15:37,918 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 06:15:37,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:15:37,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:15:37,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:15:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:15:37,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861675605] [2021-03-11 06:15:37,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:15:37,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 06:15:37,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752553709] [2021-03-11 06:15:37,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 06:15:37,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:15:37,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 06:15:37,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-03-11 06:15:37,923 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:15:37,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 982 places, 7039 transitions, 74899 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) [2021-03-11 06:15:37,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:15:37,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:15:37,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:15:44,281 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 21 [2021-03-11 06:15:56,563 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 06:16:02,292 INFO L129 PetriNetUnfolder]: 9249/19386 cut-off events. [2021-03-11 06:16:02,292 INFO L130 PetriNetUnfolder]: For 99827/102853 co-relation queries the response was YES. [2021-03-11 06:16:03,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96385 conditions, 19386 events. 9249/19386 cut-off events. For 99827/102853 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 183449 event pairs, 238 based on Foata normal form. 400/18304 useless extension candidates. Maximal degree in co-relation 95983. Up to 10893 conditions per place. [2021-03-11 06:16:03,656 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 6677 selfloop transitions, 1527 changer transitions 17/8252 dead transitions. [2021-03-11 06:16:03,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1131 places, 8252 transitions, 108661 flow [2021-03-11 06:16:03,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2021-03-11 06:16:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2021-03-11 06:16:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 7965 transitions. [2021-03-11 06:16:03,661 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7695652173913043 [2021-03-11 06:16:03,662 INFO L72 ComplementDD]: Start complementDD. Operand 150 states and 7965 transitions. [2021-03-11 06:16:03,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 7965 transitions. [2021-03-11 06:16:03,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:16:03,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 150 states and 7965 transitions. [2021-03-11 06:16:03,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 151 states, 150 states have (on average 53.1) internal successors, (7965), 150 states have internal predecessors, (7965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:16:03,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 151 states, 151 states have (on average 69.0) internal successors, (10419), 151 states have internal predecessors, (10419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:16:03,686 INFO L81 ComplementDD]: Finished complementDD. Result has 151 states, 151 states have (on average 69.0) internal successors, (10419), 151 states have internal predecessors, (10419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:16:03,687 INFO L185 Difference]: Start difference. First operand has 982 places, 7039 transitions, 74899 flow. Second operand 150 states and 7965 transitions. [2021-03-11 06:16:03,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1131 places, 8252 transitions, 108661 flow [2021-03-11 06:16:08,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1126 places, 8252 transitions, 101107 flow, removed 3636 selfloop flow, removed 5 redundant places. [2021-03-11 06:16:08,928 INFO L241 Difference]: Finished difference. Result has 1156 places, 8152 transitions, 88473 flow [2021-03-11 06:16:08,933 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=67948, PETRI_DIFFERENCE_MINUEND_PLACES=977, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=565, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=150, PETRI_FLOW=88473, PETRI_PLACES=1156, PETRI_TRANSITIONS=8152} [2021-03-11 06:16:08,933 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 1090 predicate places. [2021-03-11 06:16:08,934 INFO L480 AbstractCegarLoop]: Abstraction has has 1156 places, 8152 transitions, 88473 flow [2021-03-11 06:16:08,934 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) [2021-03-11 06:16:08,934 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:16:08,934 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:16:08,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 06:16:08,934 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]=== [2021-03-11 06:16:08,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:16:08,934 INFO L82 PathProgramCache]: Analyzing trace with hash 768714307, now seen corresponding path program 10 times [2021-03-11 06:16:08,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:16:08,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396831863] [2021-03-11 06:16:08,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:16:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:16:08,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:08,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:16:08,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:08,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:16:08,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:08,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:16:08,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:08,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:16:08,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:08,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:16:08,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:08,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:16:09,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:09,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:16:09,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:09,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:16:09,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:09,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:16:09,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:09,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:16:09,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:09,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:16:09,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:09,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:16:09,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:09,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:16:09,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:09,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:16:09,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:09,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:16:09,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:09,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:16:09,196 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:16:09,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:16:09,220 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 06:16:09,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:16:09,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:09,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:16:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:16:09,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396831863] [2021-03-11 06:16:09,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:16:09,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 06:16:09,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277548950] [2021-03-11 06:16:09,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 06:16:09,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:16:09,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 06:16:09,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-11 06:16:09,225 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:16:09,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1156 places, 8152 transitions, 88473 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) [2021-03-11 06:16:09,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:16:09,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:16:09,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:16:44,661 INFO L129 PetriNetUnfolder]: 11431/24022 cut-off events. [2021-03-11 06:16:44,661 INFO L130 PetriNetUnfolder]: For 142275/148588 co-relation queries the response was YES. [2021-03-11 06:16:45,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123488 conditions, 24022 events. 11431/24022 cut-off events. For 142275/148588 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 236225 event pairs, 237 based on Foata normal form. 910/23103 useless extension candidates. Maximal degree in co-relation 123065. Up to 12557 conditions per place. [2021-03-11 06:16:45,592 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 7370 selfloop transitions, 3153 changer transitions 6/10560 dead transitions. [2021-03-11 06:16:45,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1311 places, 10560 transitions, 144957 flow [2021-03-11 06:16:45,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-03-11 06:16:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2021-03-11 06:16:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 8197 transitions. [2021-03-11 06:16:45,598 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7615198810850985 [2021-03-11 06:16:45,598 INFO L72 ComplementDD]: Start complementDD. Operand 156 states and 8197 transitions. [2021-03-11 06:16:45,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 156 states and 8197 transitions. [2021-03-11 06:16:45,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:16:45,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 156 states and 8197 transitions. [2021-03-11 06:16:45,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 157 states, 156 states have (on average 52.544871794871796) internal successors, (8197), 156 states have internal predecessors, (8197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:16:45,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 157 states, 157 states have (on average 69.0) internal successors, (10833), 157 states have internal predecessors, (10833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:16:45,612 INFO L81 ComplementDD]: Finished complementDD. Result has 157 states, 157 states have (on average 69.0) internal successors, (10833), 157 states have internal predecessors, (10833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:16:45,613 INFO L185 Difference]: Start difference. First operand has 1156 places, 8152 transitions, 88473 flow. Second operand 156 states and 8197 transitions. [2021-03-11 06:16:45,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1311 places, 10560 transitions, 144957 flow [2021-03-11 06:16:53,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1311 places, 10560 transitions, 125051 flow, removed 9953 selfloop flow, removed 0 redundant places. [2021-03-11 06:16:53,280 INFO L241 Difference]: Finished difference. Result has 1393 places, 10362 transitions, 113489 flow [2021-03-11 06:16:53,287 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=79889, PETRI_DIFFERENCE_MINUEND_PLACES=1156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=156, PETRI_FLOW=113489, PETRI_PLACES=1393, PETRI_TRANSITIONS=10362} [2021-03-11 06:16:53,287 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 1327 predicate places. [2021-03-11 06:16:53,287 INFO L480 AbstractCegarLoop]: Abstraction has has 1393 places, 10362 transitions, 113489 flow [2021-03-11 06:16:53,287 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) [2021-03-11 06:16:53,287 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:16:53,287 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:16:53,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 06:16:53,287 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]=== [2021-03-11 06:16:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:16:53,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1366906875, now seen corresponding path program 11 times [2021-03-11 06:16:53,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:16:53,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139443464] [2021-03-11 06:16:53,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:16:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:16:53,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:53,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:16:53,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:53,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:16:53,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:53,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:16:53,357 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 06:16:53,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:16:53,365 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-11 06:16:53,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:16:53,375 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-11 06:16:53,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-11 06:16:53,390 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-11 06:16:53,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-11 06:16:53,407 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-11 06:16:53,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 06:16:53,426 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-11 06:16:53,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 06:16:53,443 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-11 06:16:53,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 06:16:53,462 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-11 06:16:53,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 06:16:53,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:53,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:16:53,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:53,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:16:53,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:53,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:16:53,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:53,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:16:53,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:53,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:16:53,606 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:16:53,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:16:53,634 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 06:16:53,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:16:53,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:16:53,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:16:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:16:53,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139443464] [2021-03-11 06:16:53,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:16:53,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 06:16:53,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155257880] [2021-03-11 06:16:53,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 06:16:53,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:16:53,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 06:16:53,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-11 06:16:53,639 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:16:53,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1393 places, 10362 transitions, 113489 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) [2021-03-11 06:16:53,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:16:53,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:16:53,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:17:34,431 INFO L129 PetriNetUnfolder]: 11850/24844 cut-off events. [2021-03-11 06:17:34,431 INFO L130 PetriNetUnfolder]: For 149644/154050 co-relation queries the response was YES. [2021-03-11 06:17:37,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126069 conditions, 24844 events. 11850/24844 cut-off events. For 149644/154050 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 245216 event pairs, 227 based on Foata normal form. 854/23819 useless extension candidates. Maximal degree in co-relation 125665. Up to 15016 conditions per place. [2021-03-11 06:17:37,692 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 9699 selfloop transitions, 1017 changer transitions 0/10747 dead transitions. [2021-03-11 06:17:37,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1456 places, 10747 transitions, 142124 flow [2021-03-11 06:17:37,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-11 06:17:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-03-11 06:17:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3422 transitions. [2021-03-11 06:17:37,696 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7749094202898551 [2021-03-11 06:17:37,696 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 3422 transitions. [2021-03-11 06:17:37,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 3422 transitions. [2021-03-11 06:17:37,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:17:37,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 3422 transitions. [2021-03-11 06:17:37,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 53.46875) internal successors, (3422), 64 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:17:37,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 69.0) internal successors, (4485), 65 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:17:37,704 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 69.0) internal successors, (4485), 65 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:17:37,704 INFO L185 Difference]: Start difference. First operand has 1393 places, 10362 transitions, 113489 flow. Second operand 64 states and 3422 transitions. [2021-03-11 06:17:37,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1456 places, 10747 transitions, 142124 flow [2021-03-11 06:17:45,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1453 places, 10747 transitions, 133780 flow, removed 4129 selfloop flow, removed 3 redundant places. [2021-03-11 06:17:45,540 INFO L241 Difference]: Finished difference. Result has 1478 places, 10663 transitions, 113784 flow [2021-03-11 06:17:45,547 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=105410, PETRI_DIFFERENCE_MINUEND_PLACES=1390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=751, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=113784, PETRI_PLACES=1478, PETRI_TRANSITIONS=10663} [2021-03-11 06:17:45,547 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 1412 predicate places. [2021-03-11 06:17:45,547 INFO L480 AbstractCegarLoop]: Abstraction has has 1478 places, 10663 transitions, 113784 flow [2021-03-11 06:17:45,547 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) [2021-03-11 06:17:45,547 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:17:45,547 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:17:45,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 06:17:45,547 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]=== [2021-03-11 06:17:45,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:17:45,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1383918993, now seen corresponding path program 12 times [2021-03-11 06:17:45,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:17:45,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622300142] [2021-03-11 06:17:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:17:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:17:45,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:17:45,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:17:45,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:17:45,602 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 06:17:45,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:17:45,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:17:45,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:17:45,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:17:45,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:17:45,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:17:45,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:17:45,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:17:45,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:17:45,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:17:45,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:17:45,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:17:45,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:17:45,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:17:45,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:17:45,849 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 06:17:45,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:17:45,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:17:45,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:17:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:17:45,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622300142] [2021-03-11 06:17:45,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:17:45,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 06:17:45,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111333508] [2021-03-11 06:17:45,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 06:17:45,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:17:45,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 06:17:45,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 06:17:45,855 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:17:45,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1478 places, 10663 transitions, 113784 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) [2021-03-11 06:17:45,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:17:45,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:17:45,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:18:12,196 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2021-03-11 06:18:44,224 INFO L129 PetriNetUnfolder]: 15458/32006 cut-off events. [2021-03-11 06:18:44,224 INFO L130 PetriNetUnfolder]: For 208151/214113 co-relation queries the response was YES. [2021-03-11 06:18:48,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162091 conditions, 32006 events. 15458/32006 cut-off events. For 208151/214113 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 325443 event pairs, 162 based on Foata normal form. 1582/31214 useless extension candidates. Maximal degree in co-relation 161649. Up to 16312 conditions per place. [2021-03-11 06:18:48,347 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 9358 selfloop transitions, 5512 changer transitions 19/14920 dead transitions. [2021-03-11 06:18:48,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1579 places, 14920 transitions, 191686 flow [2021-03-11 06:18:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-03-11 06:18:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-03-11 06:18:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 5492 transitions. [2021-03-11 06:18:48,436 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.780335322534811 [2021-03-11 06:18:48,436 INFO L72 ComplementDD]: Start complementDD. Operand 102 states and 5492 transitions. [2021-03-11 06:18:48,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 5492 transitions. [2021-03-11 06:18:48,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:18:48,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 102 states and 5492 transitions. [2021-03-11 06:18:48,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 103 states, 102 states have (on average 53.84313725490196) internal successors, (5492), 102 states have internal predecessors, (5492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:18:48,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 103 states, 103 states have (on average 69.0) internal successors, (7107), 103 states have internal predecessors, (7107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:18:48,444 INFO L81 ComplementDD]: Finished complementDD. Result has 103 states, 103 states have (on average 69.0) internal successors, (7107), 103 states have internal predecessors, (7107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:18:48,444 INFO L185 Difference]: Start difference. First operand has 1478 places, 10663 transitions, 113784 flow. Second operand 102 states and 5492 transitions. [2021-03-11 06:18:48,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1579 places, 14920 transitions, 191686 flow [2021-03-11 06:18:58,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1578 places, 14920 transitions, 189277 flow, removed 1203 selfloop flow, removed 1 redundant places. [2021-03-11 06:18:59,064 INFO L241 Difference]: Finished difference. Result has 1663 places, 14416 transitions, 176982 flow [2021-03-11 06:18:59,071 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=111381, PETRI_DIFFERENCE_MINUEND_PLACES=1477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2470, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6908, PETRI_DIFFERENCE_SUBTRAHEND_STATES=102, PETRI_FLOW=176982, PETRI_PLACES=1663, PETRI_TRANSITIONS=14416} [2021-03-11 06:18:59,072 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 1597 predicate places. [2021-03-11 06:18:59,072 INFO L480 AbstractCegarLoop]: Abstraction has has 1663 places, 14416 transitions, 176982 flow [2021-03-11 06:18:59,072 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) [2021-03-11 06:18:59,072 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:18:59,072 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:18:59,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 06:18:59,072 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]=== [2021-03-11 06:18:59,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:18:59,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1064809903, now seen corresponding path program 13 times [2021-03-11 06:18:59,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:18:59,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599717600] [2021-03-11 06:18:59,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:18:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:18:59,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:18:59,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:18:59,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:18:59,106 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 06:18:59,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:18:59,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:18:59,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:18:59,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:18:59,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:18:59,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:18:59,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:18:59,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:18:59,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:18:59,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:18:59,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:18:59,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:18:59,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:18:59,291 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:18:59,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:18:59,314 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 06:18:59,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:18:59,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:18:59,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:18:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:18:59,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599717600] [2021-03-11 06:18:59,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:18:59,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 06:18:59,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772482427] [2021-03-11 06:18:59,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 06:18:59,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:18:59,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 06:18:59,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-11 06:18:59,318 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:18:59,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1663 places, 14416 transitions, 176982 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) [2021-03-11 06:18:59,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:18:59,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:18:59,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:20:46,612 INFO L129 PetriNetUnfolder]: 17765/36581 cut-off events. [2021-03-11 06:20:46,612 INFO L130 PetriNetUnfolder]: For 368960/376850 co-relation queries the response was YES. [2021-03-11 06:20:52,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214566 conditions, 36581 events. 17765/36581 cut-off events. For 368960/376850 co-relation queries the response was YES. Maximal size of possible extension queue 1777. Compared 378680 event pairs, 198 based on Foata normal form. 1841/35769 useless extension candidates. Maximal degree in co-relation 214007. Up to 20050 conditions per place. [2021-03-11 06:20:52,726 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 12559 selfloop transitions, 4469 changer transitions 11/17070 dead transitions. [2021-03-11 06:20:52,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1749 places, 17070 transitions, 255726 flow [2021-03-11 06:20:52,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-03-11 06:20:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-03-11 06:20:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 4655 transitions. [2021-03-11 06:20:52,730 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7754456105280693 [2021-03-11 06:20:52,730 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 4655 transitions. [2021-03-11 06:20:52,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 4655 transitions. [2021-03-11 06:20:52,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:20:52,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 4655 transitions. [2021-03-11 06:20:52,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 53.50574712643678) internal successors, (4655), 87 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:20:52,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 69.0) internal successors, (6072), 88 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:20:52,739 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 69.0) internal successors, (6072), 88 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:20:52,739 INFO L185 Difference]: Start difference. First operand has 1663 places, 14416 transitions, 176982 flow. Second operand 87 states and 4655 transitions. [2021-03-11 06:20:52,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1749 places, 17070 transitions, 255726 flow [2021-03-11 06:21:15,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1743 places, 17070 transitions, 244192 flow, removed 5607 selfloop flow, removed 6 redundant places. [2021-03-11 06:21:15,953 INFO L241 Difference]: Finished difference. Result has 1797 places, 16613 transitions, 220353 flow [2021-03-11 06:21:15,962 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=170287, PETRI_DIFFERENCE_MINUEND_PLACES=1657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2632, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=220353, PETRI_PLACES=1797, PETRI_TRANSITIONS=16613} [2021-03-11 06:21:15,963 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 1731 predicate places. [2021-03-11 06:21:15,963 INFO L480 AbstractCegarLoop]: Abstraction has has 1797 places, 16613 transitions, 220353 flow [2021-03-11 06:21:15,963 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) [2021-03-11 06:21:15,963 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:21:15,963 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:21:15,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 06:21:15,963 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]=== [2021-03-11 06:21:15,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:21:15,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1938384471, now seen corresponding path program 14 times [2021-03-11 06:21:15,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:21:15,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824114139] [2021-03-11 06:21:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:21:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:21:15,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:15,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:21:15,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:15,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:21:16,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:21:16,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:21:16,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:21:16,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:21:16,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:21:16,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:21:16,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:21:16,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:21:16,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:21:16,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:21:16,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:21:16,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:21:16,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:21:16,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:21:16,263 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:21:16,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:21:16,291 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-11 06:21:16,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:21:16,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:21:16,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:21:16,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:21:16,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824114139] [2021-03-11 06:21:16,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:21:16,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 06:21:16,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416263659] [2021-03-11 06:21:16,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 06:21:16,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:21:16,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 06:21:16,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-11 06:21:16,296 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:21:16,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1797 places, 16613 transitions, 220353 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) [2021-03-11 06:21:16,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:21:16,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:21:16,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:23:38,341 INFO L129 PetriNetUnfolder]: 18373/37723 cut-off events. [2021-03-11 06:23:38,342 INFO L130 PetriNetUnfolder]: For 460949/469135 co-relation queries the response was YES. [2021-03-11 06:23:45,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235476 conditions, 37723 events. 18373/37723 cut-off events. For 460949/469135 co-relation queries the response was YES. Maximal size of possible extension queue 1825. Compared 391546 event pairs, 237 based on Foata normal form. 793/35780 useless extension candidates. Maximal degree in co-relation 234882. Up to 23564 conditions per place. [2021-03-11 06:23:45,769 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 16011 selfloop transitions, 1204 changer transitions 0/17246 dead transitions. [2021-03-11 06:23:45,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1883 places, 17246 transitions, 274148 flow [2021-03-11 06:23:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-03-11 06:23:45,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-03-11 06:23:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 4586 transitions. [2021-03-11 06:23:45,774 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7639513576545061 [2021-03-11 06:23:45,775 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 4586 transitions. [2021-03-11 06:23:45,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 4586 transitions. [2021-03-11 06:23:45,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:23:45,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 4586 transitions. [2021-03-11 06:23:45,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 52.71264367816092) internal successors, (4586), 87 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:23:45,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 69.0) internal successors, (6072), 88 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:23:45,802 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 69.0) internal successors, (6072), 88 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:23:45,803 INFO L185 Difference]: Start difference. First operand has 1797 places, 16613 transitions, 220353 flow. Second operand 87 states and 4586 transitions. [2021-03-11 06:23:45,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1883 places, 17246 transitions, 274148 flow [2021-03-11 06:24:16,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1877 places, 17246 transitions, 263700 flow, removed 5117 selfloop flow, removed 6 redundant places. [2021-03-11 06:24:16,570 INFO L241 Difference]: Finished difference. Result has 1893 places, 17184 transitions, 231837 flow [2021-03-11 06:24:16,583 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=213425, PETRI_DIFFERENCE_MINUEND_PLACES=1791, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=745, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15762, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=231837, PETRI_PLACES=1893, PETRI_TRANSITIONS=17184} [2021-03-11 06:24:16,583 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 1827 predicate places. [2021-03-11 06:24:16,583 INFO L480 AbstractCegarLoop]: Abstraction has has 1893 places, 17184 transitions, 231837 flow [2021-03-11 06:24:16,584 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) [2021-03-11 06:24:16,584 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:24:16,584 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:24:16,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 06:24:16,584 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]=== [2021-03-11 06:24:16,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:24:16,584 INFO L82 PathProgramCache]: Analyzing trace with hash -2056635881, now seen corresponding path program 15 times [2021-03-11 06:24:16,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:24:16,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989900393] [2021-03-11 06:24:16,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:24:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:24:16,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:24:16,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:24:16,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:24:16,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:24:16,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:24:16,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:24:16,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:24:16,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:24:16,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:24:16,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:24:16,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:24:16,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:24:16,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:24:16,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:24:16,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:24:16,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:24:16,838 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:24:16,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:24:16,861 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 06:24:16,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:24:16,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:24:16,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:24:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:24:16,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989900393] [2021-03-11 06:24:16,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:24:16,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 06:24:16,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362222657] [2021-03-11 06:24:16,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 06:24:16,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:24:16,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 06:24:16,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-11 06:24:16,866 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:24:16,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1893 places, 17184 transitions, 231837 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) [2021-03-11 06:24:16,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:24:16,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:24:16,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:26:27,268 INFO L129 PetriNetUnfolder]: 18451/37946 cut-off events. [2021-03-11 06:26:27,279 INFO L130 PetriNetUnfolder]: For 437303/446165 co-relation queries the response was YES. [2021-03-11 06:26:33,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 233754 conditions, 37946 events. 18451/37946 cut-off events. For 437303/446165 co-relation queries the response was YES. Maximal size of possible extension queue 1834. Compared 394881 event pairs, 218 based on Foata normal form. 794/36000 useless extension candidates. Maximal degree in co-relation 233161. Up to 23889 conditions per place. [2021-03-11 06:26:34,059 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 16287 selfloop transitions, 1003 changer transitions 0/17321 dead transitions. [2021-03-11 06:26:34,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1933 places, 17321 transitions, 269712 flow [2021-03-11 06:26:34,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 06:26:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-03-11 06:26:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2172 transitions. [2021-03-11 06:26:34,061 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.767762460233298 [2021-03-11 06:26:34,061 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2172 transitions. [2021-03-11 06:26:34,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2172 transitions. [2021-03-11 06:26:34,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:26:34,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2172 transitions. [2021-03-11 06:26:34,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.97560975609756) internal successors, (2172), 41 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:26:34,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 69.0) internal successors, (2898), 42 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:26:34,064 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 69.0) internal successors, (2898), 42 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:26:34,064 INFO L185 Difference]: Start difference. First operand has 1893 places, 17184 transitions, 231837 flow. Second operand 41 states and 2172 transitions. [2021-03-11 06:26:34,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1933 places, 17321 transitions, 269712 flow [2021-03-11 06:27:00,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1930 places, 17321 transitions, 260390 flow, removed 4564 selfloop flow, removed 3 redundant places. [2021-03-11 06:27:00,859 INFO L241 Difference]: Finished difference. Result has 1943 places, 17269 transitions, 227243 flow [2021-03-11 06:27:00,867 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=222623, PETRI_DIFFERENCE_MINUEND_PLACES=1890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=932, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=227243, PETRI_PLACES=1943, PETRI_TRANSITIONS=17269} [2021-03-11 06:27:00,867 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 1877 predicate places. [2021-03-11 06:27:00,867 INFO L480 AbstractCegarLoop]: Abstraction has has 1943 places, 17269 transitions, 227243 flow [2021-03-11 06:27:00,867 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) [2021-03-11 06:27:00,867 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:27:00,867 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:27:00,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 06:27:00,867 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]=== [2021-03-11 06:27:00,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:27:00,868 INFO L82 PathProgramCache]: Analyzing trace with hash -330087971, now seen corresponding path program 16 times [2021-03-11 06:27:00,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:27:00,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912824417] [2021-03-11 06:27:00,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:27:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:27:00,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:00,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:27:00,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:00,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:27:00,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:00,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:27:00,902 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 06:27:00,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:27:00,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:00,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:27:00,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:00,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:27:00,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:00,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:27:00,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:00,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:27:00,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:00,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:27:00,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:00,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:27:00,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:00,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:27:01,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:01,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:27:01,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:01,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:27:01,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:01,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:27:01,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:01,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:27:01,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:01,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 06:27:01,111 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 06:27:01,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 06:27:01,136 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-11 06:27:01,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 06:27:01,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:27:01,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:27:01,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:27:01,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912824417] [2021-03-11 06:27:01,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:27:01,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 06:27:01,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626083028] [2021-03-11 06:27:01,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 06:27:01,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:27:01,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 06:27:01,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-11 06:27:01,141 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-03-11 06:27:01,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1943 places, 17269 transitions, 227243 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) [2021-03-11 06:27:01,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:27:01,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-03-11 06:27:01,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:27:10,403 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 Received shutdown request... [2021-03-11 06:28:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-03-11 06:28:11,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 06:28:11,304 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-11 06:28:11,307 WARN L224 ceAbstractionStarter]: Timeout [2021-03-11 06:28:11,308 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 06:28:11 BasicIcfg [2021-03-11 06:28:11,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 06:28:11,308 INFO L168 Benchmark]: Toolchain (without parser) took 802788.03 ms. Allocated memory was 255.9 MB in the beginning and 6.5 GB in the end (delta: 6.3 GB). Free memory was 236.7 MB in the beginning and 1.0 GB in the end (delta: -766.1 MB). Peak memory consumption was 5.5 GB. Max. memory is 16.0 GB. [2021-03-11 06:28:11,308 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.6 MB in the end (delta: 181.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 06:28:11,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.96 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 06:28:11,308 INFO L168 Benchmark]: Boogie Preprocessor took 10.66 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 06:28:11,308 INFO L168 Benchmark]: RCFGBuilder took 247.01 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 235.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. [2021-03-11 06:28:11,308 INFO L168 Benchmark]: TraceAbstraction took 802505.42 ms. Allocated memory was 255.9 MB in the beginning and 6.5 GB in the end (delta: 6.3 GB). Free memory was 235.3 MB in the beginning and 1.0 GB in the end (delta: -767.5 MB). Peak memory consumption was 5.5 GB. Max. memory is 16.0 GB. [2021-03-11 06:28:11,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.6 MB in the end (delta: 181.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.96 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.66 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 247.01 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 235.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 802505.42 ms. Allocated memory was 255.9 MB in the beginning and 6.5 GB in the end (delta: 6.3 GB). Free memory was 235.3 MB in the beginning and 1.0 GB in the end (delta: -767.5 MB). Peak memory consumption was 5.5 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 95). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 48/69 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 174948 conditions, 22544 events (12379/22543 cut-off events. For 421517/431070 co-relation queries the response was YES. Maximal size of possible extension queue 1649. Compared 214338 event pairs, 169 based on Foata normal form. 1742/25338 useless extension candidates. Maximal degree in co-relation 174397. Up to 16025 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 26.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 802407.3ms, OverallIterations: 18, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 797748.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 58.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 791 SDtfs, 2851 SDslu, 1252 SDs, 0 SdLazy, 41037 SolverSat, 3784 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16027.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1538 GetRequests, 27 SyntacticMatches, 16 SemanticMatches, 1495 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66664 ImplicationChecksByTransitivity, 42677.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=231837occurred in iteration=16, InterpolantAutomatonStates: 1396, 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: 31.2ms SsaConstructionTime, 144.0ms SatisfiabilityAnalysisTime, 4237.3ms InterpolantComputationTime, 846 NumberOfCodeBlocks, 846 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 828 ConstructedInterpolants, 0 QuantifiedInterpolants, 8824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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