/usr/bin/java -Xmx8000000000 -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-OGIterative-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 12:51:33,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 12:51:33,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 12:51:33,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 12:51:33,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 12:51:33,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 12:51:33,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 12:51:33,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 12:51:33,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 12:51:33,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 12:51:33,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 12:51:33,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-08-13 12:51:33,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 12:51:33,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 12:51:33,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 12:51:33,847 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-OGIterative-Hitting.epf [2021-08-13 12:51:33,862 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 12:51:33,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 12:51:33,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 12:51:33,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 12:51:33,863 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 12:51:33,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 12:51:33,863 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 12:51:33,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 12:51:33,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 12:51:33,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 12:51:33,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 12:51:33,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 12:51:33,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 12:51:33,865 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 12:51:33,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 12:51:33,865 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 12:51:33,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 12:51:33,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 12:51:33,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 12:51:33,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 12:51:33,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 12:51:33,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 12:51:33,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 12:51:33,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 12:51:33,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 12:51:33,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 12:51:33,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 12:51:33,867 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 12:51:33,867 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 12:51:33,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 12:51:33,867 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 12:51:33,867 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 12:51:33,867 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 12:51:34,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 12:51:34,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 12:51:34,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 12:51:34,121 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 12:51:34,122 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 12:51:34,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2021-08-13 12:51:34,123 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2021-08-13 12:51:34,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 12:51:34,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 12:51:34,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 12:51:34,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 12:51:34,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 12:51:34,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:34" (1/1) ... [2021-08-13 12:51:34,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:34" (1/1) ... [2021-08-13 12:51:34,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 12:51:34,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 12:51:34,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 12:51:34,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 12:51:34,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:34" (1/1) ... [2021-08-13 12:51:34,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:34" (1/1) ... [2021-08-13 12:51:34,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:34" (1/1) ... [2021-08-13 12:51:34,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:34" (1/1) ... [2021-08-13 12:51:34,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:34" (1/1) ... [2021-08-13 12:51:34,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:34" (1/1) ... [2021-08-13 12:51:34,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:34" (1/1) ... [2021-08-13 12:51:34,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 12:51:34,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 12:51:34,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 12:51:34,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 12:51:34,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:34" (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 [2021-08-13 12:51:34,211 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-08-13 12:51:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-08-13 12:51:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-08-13 12:51:34,212 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-08-13 12:51:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-08-13 12:51:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-08-13 12:51:34,212 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-08-13 12:51:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-08-13 12:51:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-08-13 12:51:34,213 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-08-13 12:51:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-08-13 12:51:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-08-13 12:51:34,213 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-08-13 12:51:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-08-13 12:51:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-08-13 12:51:34,214 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 12:51:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 12:51:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 12:51:34,214 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-08-13 12:51:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-08-13 12:51:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-08-13 12:51:34,215 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 12:51:34,316 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 12:51:34,316 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 12:51:34,317 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:51:34 BoogieIcfgContainer [2021-08-13 12:51:34,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 12:51:34,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 12:51:34,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 12:51:34,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 12:51:34,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:34" (1/2) ... [2021-08-13 12:51:34,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10600f08 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:51:34, skipping insertion in model container [2021-08-13 12:51:34,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:51:34" (2/2) ... [2021-08-13 12:51:34,322 INFO L111 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2021-08-13 12:51:34,325 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 12:51:34,326 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 12:51:34,326 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 12:51:34,377 INFO L149 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2021-08-13 12:51:34,393 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-13 12:51:34,410 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 12:51:34,411 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 12:51:34,411 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 12:51:34,411 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 12:51:34,411 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 12:51:34,411 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 12:51:34,411 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 12:51:34,411 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 12:51:34,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 63 transitions, 264 flow [2021-08-13 12:51:34,495 INFO L129 PetriNetUnfolder]: 129/213 cut-off events. [2021-08-13 12:51:34,495 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-08-13 12:51:34,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 213 events. 129/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 763 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2021-08-13 12:51:34,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 63 transitions, 264 flow [2021-08-13 12:51:34,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 55 transitions, 236 flow [2021-08-13 12:51:34,593 INFO L129 PetriNetUnfolder]: 129/210 cut-off events. [2021-08-13 12:51:34,594 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-08-13 12:51:34,594 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:34,594 INFO L266 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] [2021-08-13 12:51:34,595 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:34,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:34,599 INFO L82 PathProgramCache]: Analyzing trace with hash 2015486039, now seen corresponding path program 1 times [2021-08-13 12:51:34,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:34,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839809501] [2021-08-13 12:51:34,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:34,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:51:34,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:34,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:34,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839809501] [2021-08-13 12:51:34,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839809501] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:34,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:34,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:51:34,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759882527] [2021-08-13 12:51:34,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:51:34,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:34,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:51:34,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:51:34,713 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2021-08-13 12:51:34,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:34,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2021-08-13 12:51:34,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:34,746 INFO L129 PetriNetUnfolder]: 49/100 cut-off events. [2021-08-13 12:51:34,746 INFO L130 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2021-08-13 12:51:34,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 100 events. 49/100 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 320 event pairs, 0 based on Foata normal form. 31/131 useless extension candidates. Maximal degree in co-relation 172. Up to 30 conditions per place. [2021-08-13 12:51:34,749 INFO L132 encePairwiseOnDemand]: 57/63 looper letters, 1 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2021-08-13 12:51:34,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 190 flow [2021-08-13 12:51:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:51:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:51:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2021-08-13 12:51:34,756 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-08-13 12:51:34,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2021-08-13 12:51:34,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2021-08-13 12:51:34,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:34,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2021-08-13 12:51:34,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,764 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2021-08-13 12:51:34,764 INFO L482 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 190 flow [2021-08-13 12:51:34,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,764 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:34,764 INFO L266 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] [2021-08-13 12:51:34,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 12:51:34,764 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:34,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:34,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1011323523, now seen corresponding path program 1 times [2021-08-13 12:51:34,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:34,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104509283] [2021-08-13 12:51:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:34,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:51:34,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:34,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:34,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104509283] [2021-08-13 12:51:34,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104509283] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:34,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:34,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:51:34,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332667973] [2021-08-13 12:51:34,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:51:34,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:34,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:51:34,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:51:34,789 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2021-08-13 12:51:34,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:34,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2021-08-13 12:51:34,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:34,802 INFO L129 PetriNetUnfolder]: 21/61 cut-off events. [2021-08-13 12:51:34,802 INFO L130 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2021-08-13 12:51:34,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 61 events. 21/61 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 145 event pairs, 0 based on Foata normal form. 11/72 useless extension candidates. Maximal degree in co-relation 99. Up to 12 conditions per place. [2021-08-13 12:51:34,803 INFO L132 encePairwiseOnDemand]: 59/63 looper letters, 2 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2021-08-13 12:51:34,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 181 flow [2021-08-13 12:51:34,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:51:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:51:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2021-08-13 12:51:34,804 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2021-08-13 12:51:34,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2021-08-13 12:51:34,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2021-08-13 12:51:34,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:34,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2021-08-13 12:51:34,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,807 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2021-08-13 12:51:34,808 INFO L482 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 181 flow [2021-08-13 12:51:34,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,808 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:34,808 INFO L266 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] [2021-08-13 12:51:34,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 12:51:34,808 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:34,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:34,809 INFO L82 PathProgramCache]: Analyzing trace with hash 614227573, now seen corresponding path program 1 times [2021-08-13 12:51:34,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:34,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997204359] [2021-08-13 12:51:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:34,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:51:34,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:34,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:34,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997204359] [2021-08-13 12:51:34,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997204359] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:34,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:34,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:51:34,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940306050] [2021-08-13 12:51:34,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:51:34,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:34,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:51:34,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:51:34,830 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2021-08-13 12:51:34,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:34,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2021-08-13 12:51:34,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:34,842 INFO L129 PetriNetUnfolder]: 12/48 cut-off events. [2021-08-13 12:51:34,842 INFO L130 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2021-08-13 12:51:34,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 48 events. 12/48 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 4/52 useless extension candidates. Maximal degree in co-relation 78. Up to 8 conditions per place. [2021-08-13 12:51:34,843 INFO L132 encePairwiseOnDemand]: 60/63 looper letters, 3 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2021-08-13 12:51:34,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 179 flow [2021-08-13 12:51:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:51:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:51:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2021-08-13 12:51:34,844 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2021-08-13 12:51:34,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2021-08-13 12:51:34,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2021-08-13 12:51:34,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:34,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2021-08-13 12:51:34,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,848 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2021-08-13 12:51:34,848 INFO L482 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 179 flow [2021-08-13 12:51:34,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,848 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:34,848 INFO L266 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] [2021-08-13 12:51:34,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 12:51:34,852 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:34,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:34,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1953879221, now seen corresponding path program 1 times [2021-08-13 12:51:34,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:34,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331002386] [2021-08-13 12:51:34,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:34,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:51:34,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:34,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:34,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331002386] [2021-08-13 12:51:34,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331002386] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:34,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:34,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:51:34,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979439454] [2021-08-13 12:51:34,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:51:34,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:34,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:51:34,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:51:34,874 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2021-08-13 12:51:34,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:34,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2021-08-13 12:51:34,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:34,883 INFO L129 PetriNetUnfolder]: 1/27 cut-off events. [2021-08-13 12:51:34,883 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2021-08-13 12:51:34,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 27 events. 1/27 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 5/32 useless extension candidates. Maximal degree in co-relation 32. Up to 3 conditions per place. [2021-08-13 12:51:34,883 INFO L132 encePairwiseOnDemand]: 58/63 looper letters, 1 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2021-08-13 12:51:34,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 27 transitions, 112 flow [2021-08-13 12:51:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:51:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:51:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2021-08-13 12:51:34,885 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2021-08-13 12:51:34,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2021-08-13 12:51:34,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2021-08-13 12:51:34,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:34,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2021-08-13 12:51:34,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,888 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2021-08-13 12:51:34,888 INFO L482 AbstractCegarLoop]: Abstraction has has 52 places, 27 transitions, 112 flow [2021-08-13 12:51:34,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,888 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:34,888 INFO L266 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] [2021-08-13 12:51:34,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 12:51:34,888 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:34,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:34,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1442332039, now seen corresponding path program 1 times [2021-08-13 12:51:34,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:34,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486378619] [2021-08-13 12:51:34,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:34,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:34,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:34,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:34,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:34,986 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:34,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:35,015 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:35,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:35,055 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:35,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:35,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:35,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486378619] [2021-08-13 12:51:35,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486378619] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:35,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:35,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:35,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532988628] [2021-08-13 12:51:35,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:35,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:35,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:35,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:35,118 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:35,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 27 transitions, 112 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:35,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:35,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:35,273 INFO L129 PetriNetUnfolder]: 167/469 cut-off events. [2021-08-13 12:51:35,273 INFO L130 PetriNetUnfolder]: For 221/221 co-relation queries the response was YES. [2021-08-13 12:51:35,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 469 events. 167/469 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3164 event pairs, 49 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 851. Up to 97 conditions per place. [2021-08-13 12:51:35,279 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 20 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2021-08-13 12:51:35,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 46 transitions, 202 flow [2021-08-13 12:51:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:35,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:35,285 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:35,285 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:35,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:35,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:35,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:35,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,290 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,290 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2021-08-13 12:51:35,290 INFO L482 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 202 flow [2021-08-13 12:51:35,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,291 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:35,291 INFO L266 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] [2021-08-13 12:51:35,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 12:51:35,291 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:35,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:35,292 INFO L82 PathProgramCache]: Analyzing trace with hash 2014025299, now seen corresponding path program 2 times [2021-08-13 12:51:35,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:35,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781785653] [2021-08-13 12:51:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:35,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:35,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:35,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:35,414 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:35,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:35,435 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:35,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:35,460 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:35,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:35,494 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:35,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:35,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:35,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781785653] [2021-08-13 12:51:35,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781785653] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:35,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:35,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:35,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255039764] [2021-08-13 12:51:35,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:35,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:35,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:35,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:35,517 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:35,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:35,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:35,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:35,649 INFO L129 PetriNetUnfolder]: 192/654 cut-off events. [2021-08-13 12:51:35,649 INFO L130 PetriNetUnfolder]: For 408/662 co-relation queries the response was YES. [2021-08-13 12:51:35,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1590 conditions, 654 events. 192/654 cut-off events. For 408/662 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4961 event pairs, 17 based on Foata normal form. 1/626 useless extension candidates. Maximal degree in co-relation 1459. Up to 129 conditions per place. [2021-08-13 12:51:35,655 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 55 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2021-08-13 12:51:35,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 93 transitions, 536 flow [2021-08-13 12:51:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:35,657 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:35,658 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:35,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:35,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:35,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:35,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,661 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,661 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2021-08-13 12:51:35,661 INFO L482 AbstractCegarLoop]: Abstraction has has 66 places, 93 transitions, 536 flow [2021-08-13 12:51:35,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,661 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:35,662 INFO L266 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] [2021-08-13 12:51:35,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 12:51:35,662 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:35,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:35,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1143783117, now seen corresponding path program 3 times [2021-08-13 12:51:35,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:35,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746406162] [2021-08-13 12:51:35,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:35,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:35,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:35,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:35,739 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:35,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:35,754 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:35,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:35,793 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:35,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:35,824 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:35,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:35,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:35,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746406162] [2021-08-13 12:51:35,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746406162] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:35,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:35,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:35,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531785189] [2021-08-13 12:51:35,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:35,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:35,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:35,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:35,857 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:35,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 93 transitions, 536 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:35,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:35,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:35,987 INFO L129 PetriNetUnfolder]: 213/903 cut-off events. [2021-08-13 12:51:35,987 INFO L130 PetriNetUnfolder]: For 809/1749 co-relation queries the response was YES. [2021-08-13 12:51:35,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 903 events. 213/903 cut-off events. For 809/1749 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7987 event pairs, 5 based on Foata normal form. 3/867 useless extension candidates. Maximal degree in co-relation 2336. Up to 179 conditions per place. [2021-08-13 12:51:35,994 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 124 selfloop transitions, 45 changer transitions 0/189 dead transitions. [2021-08-13 12:51:35,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 189 transitions, 1450 flow [2021-08-13 12:51:35,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:35,996 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:35,996 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:35,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:35,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:35,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:35,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,999 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,999 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2021-08-13 12:51:35,999 INFO L482 AbstractCegarLoop]: Abstraction has has 73 places, 189 transitions, 1450 flow [2021-08-13 12:51:35,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,999 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:35,999 INFO L266 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] [2021-08-13 12:51:36,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 12:51:36,000 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:36,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1567609223, now seen corresponding path program 4 times [2021-08-13 12:51:36,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:36,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512644778] [2021-08-13 12:51:36,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:36,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:36,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:36,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:36,057 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:36,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:36,069 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:36,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:36,086 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:36,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:36,109 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:36,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:36,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:36,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512644778] [2021-08-13 12:51:36,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512644778] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:36,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:36,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:36,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104137523] [2021-08-13 12:51:36,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:36,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:36,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:36,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:36,131 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:36,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 189 transitions, 1450 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:36,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:36,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:36,305 INFO L129 PetriNetUnfolder]: 246/1180 cut-off events. [2021-08-13 12:51:36,305 INFO L130 PetriNetUnfolder]: For 1431/3439 co-relation queries the response was YES. [2021-08-13 12:51:36,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3873 conditions, 1180 events. 246/1180 cut-off events. For 1431/3439 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11633 event pairs, 1 based on Foata normal form. 13/1153 useless extension candidates. Maximal degree in co-relation 3464. Up to 242 conditions per place. [2021-08-13 12:51:36,313 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 233 selfloop transitions, 89 changer transitions 0/342 dead transitions. [2021-08-13 12:51:36,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 342 transitions, 3318 flow [2021-08-13 12:51:36,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:36,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:36,315 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:36,315 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:36,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:36,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:36,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:36,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,317 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,317 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2021-08-13 12:51:36,317 INFO L482 AbstractCegarLoop]: Abstraction has has 80 places, 342 transitions, 3318 flow [2021-08-13 12:51:36,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,317 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:36,317 INFO L266 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] [2021-08-13 12:51:36,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 12:51:36,318 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:36,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:36,318 INFO L82 PathProgramCache]: Analyzing trace with hash 915183907, now seen corresponding path program 5 times [2021-08-13 12:51:36,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:36,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959549137] [2021-08-13 12:51:36,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:36,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:36,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:36,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:36,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:36,347 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:36,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:36,358 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:36,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:36,373 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:36,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:36,391 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:36,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:36,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:36,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959549137] [2021-08-13 12:51:36,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959549137] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:36,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:36,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:36,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291890940] [2021-08-13 12:51:36,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:36,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:36,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:36,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:36,410 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:36,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 342 transitions, 3318 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:36,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:36,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:36,581 INFO L129 PetriNetUnfolder]: 266/1338 cut-off events. [2021-08-13 12:51:36,581 INFO L130 PetriNetUnfolder]: For 2200/5875 co-relation queries the response was YES. [2021-08-13 12:51:36,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4910 conditions, 1338 events. 266/1338 cut-off events. For 2200/5875 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 13726 event pairs, 0 based on Foata normal form. 41/1337 useless extension candidates. Maximal degree in co-relation 4389. Up to 276 conditions per place. [2021-08-13 12:51:36,594 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 347 selfloop transitions, 118 changer transitions 0/485 dead transitions. [2021-08-13 12:51:36,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 485 transitions, 5678 flow [2021-08-13 12:51:36,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:36,596 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:36,596 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:36,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:36,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:36,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:36,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,598 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,598 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 43 predicate places. [2021-08-13 12:51:36,598 INFO L482 AbstractCegarLoop]: Abstraction has has 87 places, 485 transitions, 5678 flow [2021-08-13 12:51:36,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,600 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:36,600 INFO L266 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] [2021-08-13 12:51:36,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 12:51:36,600 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:36,601 INFO L82 PathProgramCache]: Analyzing trace with hash -405293647, now seen corresponding path program 6 times [2021-08-13 12:51:36,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:36,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305926152] [2021-08-13 12:51:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:36,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:36,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:36,641 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:36,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:36,649 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:36,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:36,663 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:36,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:36,687 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:36,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:36,710 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:36,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:36,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:36,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305926152] [2021-08-13 12:51:36,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305926152] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:36,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:36,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:36,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260240439] [2021-08-13 12:51:36,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:36,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:36,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:36,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:36,732 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:36,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 485 transitions, 5678 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:36,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:36,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:37,019 INFO L129 PetriNetUnfolder]: 267/1411 cut-off events. [2021-08-13 12:51:37,019 INFO L130 PetriNetUnfolder]: For 2923/7869 co-relation queries the response was YES. [2021-08-13 12:51:37,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5751 conditions, 1411 events. 267/1411 cut-off events. For 2923/7869 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 14904 event pairs, 0 based on Foata normal form. 78/1453 useless extension candidates. Maximal degree in co-relation 5114. Up to 304 conditions per place. [2021-08-13 12:51:37,031 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 450 selfloop transitions, 135 changer transitions 0/605 dead transitions. [2021-08-13 12:51:37,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 605 transitions, 8288 flow [2021-08-13 12:51:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:37,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:37,033 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:37,033 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:37,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:37,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:37,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:37,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,035 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,035 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2021-08-13 12:51:37,035 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 605 transitions, 8288 flow [2021-08-13 12:51:37,035 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,035 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:37,035 INFO L266 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] [2021-08-13 12:51:37,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 12:51:37,035 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:37,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:37,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1994425763, now seen corresponding path program 7 times [2021-08-13 12:51:37,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:37,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492205213] [2021-08-13 12:51:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:37,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:37,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:37,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:37,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:37,072 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:37,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:37,081 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:37,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:37,091 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:37,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:37,105 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:37,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:37,123 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:37,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:37,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:37,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492205213] [2021-08-13 12:51:37,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492205213] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:37,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:37,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:37,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536548855] [2021-08-13 12:51:37,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:37,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:37,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:37,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:37,143 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:37,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 605 transitions, 8288 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:37,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:37,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:37,498 INFO L129 PetriNetUnfolder]: 258/1446 cut-off events. [2021-08-13 12:51:37,498 INFO L130 PetriNetUnfolder]: For 4055/11761 co-relation queries the response was YES. [2021-08-13 12:51:37,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6489 conditions, 1446 events. 258/1446 cut-off events. For 4055/11761 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 15577 event pairs, 0 based on Foata normal form. 164/1565 useless extension candidates. Maximal degree in co-relation 5724. Up to 317 conditions per place. [2021-08-13 12:51:37,517 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 459 selfloop transitions, 139 changer transitions 0/618 dead transitions. [2021-08-13 12:51:37,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 618 transitions, 9666 flow [2021-08-13 12:51:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:37,519 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:37,519 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:37,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:37,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:37,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:37,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,522 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,522 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 57 predicate places. [2021-08-13 12:51:37,522 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 618 transitions, 9666 flow [2021-08-13 12:51:37,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,522 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:37,523 INFO L266 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] [2021-08-13 12:51:37,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 12:51:37,523 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:37,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:37,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1399393075, now seen corresponding path program 8 times [2021-08-13 12:51:37,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:37,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913587814] [2021-08-13 12:51:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:37,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:37,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:37,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:37,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:37,565 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:37,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:37,575 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:37,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:37,588 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:37,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:37,610 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:37,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:37,633 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:37,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:37,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:37,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:37,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913587814] [2021-08-13 12:51:37,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913587814] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:37,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:37,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:37,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427698936] [2021-08-13 12:51:37,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:37,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:37,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:37,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:37,657 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:37,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 618 transitions, 9666 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:37,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:37,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:38,035 INFO L129 PetriNetUnfolder]: 262/1488 cut-off events. [2021-08-13 12:51:38,035 INFO L130 PetriNetUnfolder]: For 7049/25736 co-relation queries the response was YES. [2021-08-13 12:51:38,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7204 conditions, 1488 events. 262/1488 cut-off events. For 7049/25736 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 16143 event pairs, 0 based on Foata normal form. 325/1772 useless extension candidates. Maximal degree in co-relation 6359. Up to 319 conditions per place. [2021-08-13 12:51:38,059 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 461 selfloop transitions, 139 changer transitions 0/620 dead transitions. [2021-08-13 12:51:38,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 620 transitions, 10898 flow [2021-08-13 12:51:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:38,061 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:38,062 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:38,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:38,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:38,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:38,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,064 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,065 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2021-08-13 12:51:38,065 INFO L482 AbstractCegarLoop]: Abstraction has has 108 places, 620 transitions, 10898 flow [2021-08-13 12:51:38,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,065 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:38,065 INFO L266 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] [2021-08-13 12:51:38,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 12:51:38,065 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:38,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:38,066 INFO L82 PathProgramCache]: Analyzing trace with hash -991865191, now seen corresponding path program 9 times [2021-08-13 12:51:38,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:38,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184658500] [2021-08-13 12:51:38,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:38,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:38,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:38,097 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:38,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:38,112 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:38,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:38,126 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:38,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:38,146 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:38,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:38,173 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:38,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:38,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:38,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184658500] [2021-08-13 12:51:38,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184658500] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:38,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:38,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:38,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213738293] [2021-08-13 12:51:38,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:38,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:38,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:38,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:38,199 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:38,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 620 transitions, 10898 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:38,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:38,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:38,456 INFO L129 PetriNetUnfolder]: 250/1448 cut-off events. [2021-08-13 12:51:38,456 INFO L130 PetriNetUnfolder]: For 7040/17286 co-relation queries the response was YES. [2021-08-13 12:51:38,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 1448 events. 250/1448 cut-off events. For 7040/17286 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 15675 event pairs, 0 based on Foata normal form. 162/1565 useless extension candidates. Maximal degree in co-relation 6811. Up to 318 conditions per place. [2021-08-13 12:51:38,472 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 460 selfloop transitions, 139 changer transitions 0/619 dead transitions. [2021-08-13 12:51:38,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 619 transitions, 12078 flow [2021-08-13 12:51:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:38,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:38,474 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:38,474 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:38,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:38,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:38,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:38,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,476 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,476 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 71 predicate places. [2021-08-13 12:51:38,476 INFO L482 AbstractCegarLoop]: Abstraction has has 115 places, 619 transitions, 12078 flow [2021-08-13 12:51:38,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,476 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:38,476 INFO L266 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] [2021-08-13 12:51:38,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 12:51:38,477 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:38,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:38,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1189859887, now seen corresponding path program 10 times [2021-08-13 12:51:38,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:38,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590353321] [2021-08-13 12:51:38,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:38,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:38,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:38,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:38,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:38,506 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:38,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:38,518 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:38,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:38,533 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:38,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:38,553 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:38,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:38,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:38,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590353321] [2021-08-13 12:51:38,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590353321] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:38,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:38,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:38,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496218038] [2021-08-13 12:51:38,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:38,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:38,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:38,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:38,573 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:38,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 619 transitions, 12078 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:38,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:38,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:38,922 INFO L129 PetriNetUnfolder]: 243/1512 cut-off events. [2021-08-13 12:51:38,922 INFO L130 PetriNetUnfolder]: For 9483/21005 co-relation queries the response was YES. [2021-08-13 12:51:38,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8600 conditions, 1512 events. 243/1512 cut-off events. For 9483/21005 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 16807 event pairs, 0 based on Foata normal form. 162/1623 useless extension candidates. Maximal degree in co-relation 7505. Up to 335 conditions per place. [2021-08-13 12:51:38,935 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 472 selfloop transitions, 144 changer transitions 0/636 dead transitions. [2021-08-13 12:51:38,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 636 transitions, 13650 flow [2021-08-13 12:51:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:38,936 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:38,936 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:38,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:38,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:38,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:38,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,938 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,938 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 78 predicate places. [2021-08-13 12:51:38,938 INFO L482 AbstractCegarLoop]: Abstraction has has 122 places, 636 transitions, 13650 flow [2021-08-13 12:51:38,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,938 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:38,938 INFO L266 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] [2021-08-13 12:51:38,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 12:51:38,939 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:38,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:38,939 INFO L82 PathProgramCache]: Analyzing trace with hash -918113627, now seen corresponding path program 11 times [2021-08-13 12:51:38,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:38,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466508143] [2021-08-13 12:51:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:38,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:38,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:38,958 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:38,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:38,964 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:38,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:38,974 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:38,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:38,987 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:38,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:39,005 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:39,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:39,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:39,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466508143] [2021-08-13 12:51:39,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466508143] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:39,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:39,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:39,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698478817] [2021-08-13 12:51:39,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:39,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:39,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:39,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:39,023 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:39,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 636 transitions, 13650 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:39,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:39,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:39,255 INFO L129 PetriNetUnfolder]: 240/1491 cut-off events. [2021-08-13 12:51:39,255 INFO L130 PetriNetUnfolder]: For 17135/44396 co-relation queries the response was YES. [2021-08-13 12:51:39,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9156 conditions, 1491 events. 240/1491 cut-off events. For 17135/44396 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 16536 event pairs, 0 based on Foata normal form. 325/1760 useless extension candidates. Maximal degree in co-relation 7999. Up to 334 conditions per place. [2021-08-13 12:51:39,268 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 471 selfloop transitions, 144 changer transitions 0/635 dead transitions. [2021-08-13 12:51:39,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 635 transitions, 14858 flow [2021-08-13 12:51:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:39,270 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:39,270 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:39,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:39,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:39,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:39,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,272 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,272 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 85 predicate places. [2021-08-13 12:51:39,272 INFO L482 AbstractCegarLoop]: Abstraction has has 129 places, 635 transitions, 14858 flow [2021-08-13 12:51:39,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,273 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:39,273 INFO L266 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] [2021-08-13 12:51:39,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 12:51:39,273 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:39,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:39,273 INFO L82 PathProgramCache]: Analyzing trace with hash 927987865, now seen corresponding path program 12 times [2021-08-13 12:51:39,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:39,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730685144] [2021-08-13 12:51:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:39,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:39,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:39,292 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:39,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:39,298 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:39,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:39,308 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:39,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:39,320 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:39,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:39,338 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:39,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:39,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:39,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730685144] [2021-08-13 12:51:39,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730685144] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:39,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:39,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:39,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978422065] [2021-08-13 12:51:39,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:39,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:39,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:39,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:39,357 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:39,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 635 transitions, 14858 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:39,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:39,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:39,711 INFO L129 PetriNetUnfolder]: 241/1586 cut-off events. [2021-08-13 12:51:39,711 INFO L130 PetriNetUnfolder]: For 15118/29204 co-relation queries the response was YES. [2021-08-13 12:51:39,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10143 conditions, 1586 events. 241/1586 cut-off events. For 15118/29204 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 18043 event pairs, 0 based on Foata normal form. 133/1667 useless extension candidates. Maximal degree in co-relation 8798. Up to 343 conditions per place. [2021-08-13 12:51:39,724 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 468 selfloop transitions, 161 changer transitions 0/649 dead transitions. [2021-08-13 12:51:39,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 649 transitions, 16452 flow [2021-08-13 12:51:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:39,726 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:39,726 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:39,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:39,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:39,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:39,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,729 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,729 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 92 predicate places. [2021-08-13 12:51:39,729 INFO L482 AbstractCegarLoop]: Abstraction has has 136 places, 649 transitions, 16452 flow [2021-08-13 12:51:39,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,729 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:39,729 INFO L266 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] [2021-08-13 12:51:39,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 12:51:39,729 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:39,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:39,730 INFO L82 PathProgramCache]: Analyzing trace with hash 2076828333, now seen corresponding path program 13 times [2021-08-13 12:51:39,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:39,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103231106] [2021-08-13 12:51:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:39,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:39,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:39,747 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:39,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:39,754 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:39,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:39,766 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:39,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:39,779 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:39,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:39,796 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:39,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:39,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:39,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:39,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103231106] [2021-08-13 12:51:39,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103231106] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:39,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:39,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:39,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377291632] [2021-08-13 12:51:39,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:39,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:39,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:39,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:39,815 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:39,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 649 transitions, 16452 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:39,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:39,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:40,060 INFO L129 PetriNetUnfolder]: 246/1591 cut-off events. [2021-08-13 12:51:40,061 INFO L130 PetriNetUnfolder]: For 17769/32945 co-relation queries the response was YES. [2021-08-13 12:51:40,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10763 conditions, 1591 events. 246/1591 cut-off events. For 17769/32945 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 17996 event pairs, 0 based on Foata normal form. 118/1661 useless extension candidates. Maximal degree in co-relation 9352. Up to 342 conditions per place. [2021-08-13 12:51:40,076 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 473 selfloop transitions, 155 changer transitions 0/648 dead transitions. [2021-08-13 12:51:40,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 648 transitions, 17682 flow [2021-08-13 12:51:40,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:40,077 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:40,077 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:40,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:40,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:40,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:40,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,079 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,079 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 99 predicate places. [2021-08-13 12:51:40,079 INFO L482 AbstractCegarLoop]: Abstraction has has 143 places, 648 transitions, 17682 flow [2021-08-13 12:51:40,079 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,079 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:40,079 INFO L266 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] [2021-08-13 12:51:40,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 12:51:40,079 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:40,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:40,080 INFO L82 PathProgramCache]: Analyzing trace with hash -859726089, now seen corresponding path program 14 times [2021-08-13 12:51:40,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:40,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142453317] [2021-08-13 12:51:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:40,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:40,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:40,098 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:40,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:40,104 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:40,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:40,113 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:40,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:40,125 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:40,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:40,141 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:40,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:40,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:40,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142453317] [2021-08-13 12:51:40,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142453317] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:40,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:40,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:40,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153141588] [2021-08-13 12:51:40,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:40,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:40,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:40,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:40,160 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:40,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 648 transitions, 17682 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:40,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:40,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:40,517 INFO L129 PetriNetUnfolder]: 242/1605 cut-off events. [2021-08-13 12:51:40,517 INFO L130 PetriNetUnfolder]: For 23512/42477 co-relation queries the response was YES. [2021-08-13 12:51:40,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11459 conditions, 1605 events. 242/1605 cut-off events. For 23512/42477 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 18219 event pairs, 0 based on Foata normal form. 146/1698 useless extension candidates. Maximal degree in co-relation 9948. Up to 344 conditions per place. [2021-08-13 12:51:40,531 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 466 selfloop transitions, 164 changer transitions 0/650 dead transitions. [2021-08-13 12:51:40,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 650 transitions, 18998 flow [2021-08-13 12:51:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:40,532 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:40,532 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:40,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:40,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:40,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:40,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,534 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,534 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 106 predicate places. [2021-08-13 12:51:40,534 INFO L482 AbstractCegarLoop]: Abstraction has has 150 places, 650 transitions, 18998 flow [2021-08-13 12:51:40,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,534 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:40,535 INFO L266 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] [2021-08-13 12:51:40,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 12:51:40,535 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:40,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:40,535 INFO L82 PathProgramCache]: Analyzing trace with hash 856854033, now seen corresponding path program 15 times [2021-08-13 12:51:40,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:40,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061288062] [2021-08-13 12:51:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:40,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:40,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:40,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:40,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:40,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:40,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:40,568 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:40,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:40,581 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:40,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:40,599 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:40,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:40,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:40,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061288062] [2021-08-13 12:51:40,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061288062] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:40,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:40,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:40,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917411147] [2021-08-13 12:51:40,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:40,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:40,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:40,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:40,618 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:40,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 650 transitions, 18998 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:40,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:40,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:40,854 INFO L129 PetriNetUnfolder]: 234/1568 cut-off events. [2021-08-13 12:51:40,854 INFO L130 PetriNetUnfolder]: For 34945/69894 co-relation queries the response was YES. [2021-08-13 12:51:40,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11990 conditions, 1568 events. 234/1568 cut-off events. For 34945/69894 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 17826 event pairs, 0 based on Foata normal form. 199/1711 useless extension candidates. Maximal degree in co-relation 10415. Up to 343 conditions per place. [2021-08-13 12:51:40,868 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 472 selfloop transitions, 157 changer transitions 0/649 dead transitions. [2021-08-13 12:51:40,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 649 transitions, 20226 flow [2021-08-13 12:51:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:40,869 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:40,869 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:40,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:40,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:40,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:40,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,871 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,872 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 113 predicate places. [2021-08-13 12:51:40,872 INFO L482 AbstractCegarLoop]: Abstraction has has 157 places, 649 transitions, 20226 flow [2021-08-13 12:51:40,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,872 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:40,872 INFO L266 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] [2021-08-13 12:51:40,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 12:51:40,872 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:40,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:40,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1519549749, now seen corresponding path program 16 times [2021-08-13 12:51:40,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:40,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14735587] [2021-08-13 12:51:40,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:40,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:40,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:40,891 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:40,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:40,898 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:40,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:40,907 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:51:40,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:51:40,929 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:40,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:40,948 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:40,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:40,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:40,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14735587] [2021-08-13 12:51:40,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14735587] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:40,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:40,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:40,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928403150] [2021-08-13 12:51:40,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:40,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:40,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:40,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:40,967 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:40,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 649 transitions, 20226 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:40,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:40,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:41,322 INFO L129 PetriNetUnfolder]: 230/1624 cut-off events. [2021-08-13 12:51:41,323 INFO L130 PetriNetUnfolder]: For 37321/67386 co-relation queries the response was YES. [2021-08-13 12:51:41,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12938 conditions, 1624 events. 230/1624 cut-off events. For 37321/67386 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 18755 event pairs, 0 based on Foata normal form. 171/1738 useless extension candidates. Maximal degree in co-relation 11161. Up to 355 conditions per place. [2021-08-13 12:51:41,341 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 476 selfloop transitions, 166 changer transitions 0/662 dead transitions. [2021-08-13 12:51:41,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 662 transitions, 21926 flow [2021-08-13 12:51:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:41,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:41,342 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:41,342 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:41,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:41,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:41,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:41,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,344 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,344 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 120 predicate places. [2021-08-13 12:51:41,344 INFO L482 AbstractCegarLoop]: Abstraction has has 164 places, 662 transitions, 21926 flow [2021-08-13 12:51:41,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,344 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:41,345 INFO L266 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] [2021-08-13 12:51:41,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 12:51:41,345 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:41,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:41,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1087943799, now seen corresponding path program 17 times [2021-08-13 12:51:41,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:41,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550906453] [2021-08-13 12:51:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:41,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:41,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:41,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:41,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:41,369 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:41,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:41,376 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:41,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:41,387 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:51:41,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:51:41,412 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:41,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:41,432 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:41,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:41,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:41,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550906453] [2021-08-13 12:51:41,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550906453] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:41,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:41,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:41,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928982065] [2021-08-13 12:51:41,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:41,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:41,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:41,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:41,453 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:41,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 662 transitions, 21926 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:41,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:41,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:41,768 INFO L129 PetriNetUnfolder]: 228/1613 cut-off events. [2021-08-13 12:51:41,768 INFO L130 PetriNetUnfolder]: For 33927/54303 co-relation queries the response was YES. [2021-08-13 12:51:41,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13539 conditions, 1613 events. 228/1613 cut-off events. For 33927/54303 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 18618 event pairs, 0 based on Foata normal form. 118/1675 useless extension candidates. Maximal degree in co-relation 11695. Up to 354 conditions per place. [2021-08-13 12:51:41,786 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 474 selfloop transitions, 167 changer transitions 0/661 dead transitions. [2021-08-13 12:51:41,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 661 transitions, 23174 flow [2021-08-13 12:51:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:41,788 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:41,788 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:41,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:41,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:41,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:41,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,789 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,789 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 127 predicate places. [2021-08-13 12:51:41,789 INFO L482 AbstractCegarLoop]: Abstraction has has 171 places, 661 transitions, 23174 flow [2021-08-13 12:51:41,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,790 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:41,790 INFO L266 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] [2021-08-13 12:51:41,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 12:51:41,790 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:41,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:41,790 INFO L82 PathProgramCache]: Analyzing trace with hash -806932297, now seen corresponding path program 18 times [2021-08-13 12:51:41,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:41,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883083983] [2021-08-13 12:51:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:41,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:41,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:41,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:41,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:41,809 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:41,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:41,815 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:41,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:41,825 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:51:41,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:51:41,850 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:41,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:41,868 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:41,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:41,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:41,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883083983] [2021-08-13 12:51:41,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883083983] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:41,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:41,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:41,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625534648] [2021-08-13 12:51:41,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:41,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:41,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:41,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:41,887 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:41,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 661 transitions, 23174 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:41,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:41,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:42,345 INFO L129 PetriNetUnfolder]: 226/1822 cut-off events. [2021-08-13 12:51:42,345 INFO L130 PetriNetUnfolder]: For 64767/112225 co-relation queries the response was YES. [2021-08-13 12:51:42,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15578 conditions, 1822 events. 226/1822 cut-off events. For 64767/112225 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 21996 event pairs, 0 based on Foata normal form. 235/1988 useless extension candidates. Maximal degree in co-relation 13207. Up to 404 conditions per place. [2021-08-13 12:51:42,361 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 530 selfloop transitions, 167 changer transitions 0/717 dead transitions. [2021-08-13 12:51:42,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 717 transitions, 26584 flow [2021-08-13 12:51:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:42,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:42,362 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:42,363 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:42,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:42,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:42,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:42,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,364 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,364 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 134 predicate places. [2021-08-13 12:51:42,364 INFO L482 AbstractCegarLoop]: Abstraction has has 178 places, 717 transitions, 26584 flow [2021-08-13 12:51:42,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,364 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:42,364 INFO L266 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] [2021-08-13 12:51:42,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 12:51:42,365 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:42,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:42,365 INFO L82 PathProgramCache]: Analyzing trace with hash 669164169, now seen corresponding path program 19 times [2021-08-13 12:51:42,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:42,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155650008] [2021-08-13 12:51:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:42,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:42,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:42,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:42,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:42,383 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:42,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:42,389 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:42,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:42,399 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:42,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:42,411 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:42,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:42,429 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:42,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:42,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:42,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155650008] [2021-08-13 12:51:42,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155650008] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:42,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:42,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:42,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607731835] [2021-08-13 12:51:42,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:42,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:42,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:42,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:42,448 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:42,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 717 transitions, 26584 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:42,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:42,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:42,788 INFO L129 PetriNetUnfolder]: 228/1908 cut-off events. [2021-08-13 12:51:42,789 INFO L130 PetriNetUnfolder]: For 48469/71433 co-relation queries the response was YES. [2021-08-13 12:51:42,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16703 conditions, 1908 events. 228/1908 cut-off events. For 48469/71433 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 23437 event pairs, 0 based on Foata normal form. 116/1963 useless extension candidates. Maximal degree in co-relation 14087. Up to 417 conditions per place. [2021-08-13 12:51:42,806 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 539 selfloop transitions, 171 changer transitions 0/730 dead transitions. [2021-08-13 12:51:42,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 730 transitions, 28498 flow [2021-08-13 12:51:42,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:42,807 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:42,807 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:42,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:42,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:42,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:42,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,808 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,808 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 141 predicate places. [2021-08-13 12:51:42,808 INFO L482 AbstractCegarLoop]: Abstraction has has 185 places, 730 transitions, 28498 flow [2021-08-13 12:51:42,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,808 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:42,809 INFO L266 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] [2021-08-13 12:51:42,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 12:51:42,809 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:42,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:42,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1081081535, now seen corresponding path program 20 times [2021-08-13 12:51:42,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:42,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767418860] [2021-08-13 12:51:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:42,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:42,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:42,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:42,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:42,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:42,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:42,831 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:42,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:42,839 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:42,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:42,852 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:42,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:42,869 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:42,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:42,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:42,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767418860] [2021-08-13 12:51:42,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767418860] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:42,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:42,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:42,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117299317] [2021-08-13 12:51:42,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:42,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:42,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:42,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:42,887 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:42,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 730 transitions, 28498 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:42,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:42,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:43,262 INFO L129 PetriNetUnfolder]: 228/1905 cut-off events. [2021-08-13 12:51:43,262 INFO L130 PetriNetUnfolder]: For 60392/88201 co-relation queries the response was YES. [2021-08-13 12:51:43,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17389 conditions, 1905 events. 228/1905 cut-off events. For 60392/88201 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 23398 event pairs, 0 based on Foata normal form. 146/1989 useless extension candidates. Maximal degree in co-relation 14684. Up to 416 conditions per place. [2021-08-13 12:51:43,284 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 539 selfloop transitions, 170 changer transitions 0/729 dead transitions. [2021-08-13 12:51:43,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 729 transitions, 29876 flow [2021-08-13 12:51:43,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:43,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:43,285 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:43,285 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:43,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:43,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:43,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:43,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,287 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,287 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 148 predicate places. [2021-08-13 12:51:43,287 INFO L482 AbstractCegarLoop]: Abstraction has has 192 places, 729 transitions, 29876 flow [2021-08-13 12:51:43,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,287 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:43,287 INFO L266 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] [2021-08-13 12:51:43,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 12:51:43,287 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:43,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:43,288 INFO L82 PathProgramCache]: Analyzing trace with hash -53028929, now seen corresponding path program 21 times [2021-08-13 12:51:43,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:43,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585312307] [2021-08-13 12:51:43,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:43,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:43,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:43,306 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:43,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:43,313 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:43,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:43,324 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:51:43,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:51:43,352 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:43,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:43,374 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:43,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:43,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:43,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585312307] [2021-08-13 12:51:43,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585312307] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:43,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:43,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:43,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343362607] [2021-08-13 12:51:43,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:43,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:43,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:43,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:43,394 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:43,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 729 transitions, 29876 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:43,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:43,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:43,793 INFO L129 PetriNetUnfolder]: 220/1868 cut-off events. [2021-08-13 12:51:43,793 INFO L130 PetriNetUnfolder]: For 60192/85756 co-relation queries the response was YES. [2021-08-13 12:51:43,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17993 conditions, 1868 events. 220/1868 cut-off events. For 60192/85756 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 22882 event pairs, 0 based on Foata normal form. 116/1911 useless extension candidates. Maximal degree in co-relation 15201. Up to 415 conditions per place. [2021-08-13 12:51:43,810 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 538 selfloop transitions, 170 changer transitions 0/728 dead transitions. [2021-08-13 12:51:43,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 728 transitions, 31250 flow [2021-08-13 12:51:43,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:43,811 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:43,811 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:43,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:43,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:43,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:43,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,813 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,813 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 155 predicate places. [2021-08-13 12:51:43,813 INFO L482 AbstractCegarLoop]: Abstraction has has 199 places, 728 transitions, 31250 flow [2021-08-13 12:51:43,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,813 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:43,813 INFO L266 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] [2021-08-13 12:51:43,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 12:51:43,813 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:43,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:43,813 INFO L82 PathProgramCache]: Analyzing trace with hash 521468273, now seen corresponding path program 22 times [2021-08-13 12:51:43,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:43,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087924292] [2021-08-13 12:51:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:43,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:43,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:43,829 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:43,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:43,834 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:43,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:43,843 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:43,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:43,856 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:43,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:43,873 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:43,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:43,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:43,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087924292] [2021-08-13 12:51:43,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087924292] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:43,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:43,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:43,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983160392] [2021-08-13 12:51:43,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:43,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:43,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:43,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:43,930 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:43,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 728 transitions, 31250 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:43,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:43,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:44,290 INFO L129 PetriNetUnfolder]: 229/1907 cut-off events. [2021-08-13 12:51:44,290 INFO L130 PetriNetUnfolder]: For 74536/105293 co-relation queries the response was YES. [2021-08-13 12:51:44,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18772 conditions, 1907 events. 229/1907 cut-off events. For 74536/105293 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 23410 event pairs, 0 based on Foata normal form. 146/1990 useless extension candidates. Maximal degree in co-relation 15895. Up to 414 conditions per place. [2021-08-13 12:51:44,308 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 541 selfloop transitions, 166 changer transitions 0/727 dead transitions. [2021-08-13 12:51:44,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 727 transitions, 32620 flow [2021-08-13 12:51:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:44,309 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:44,309 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:44,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:44,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:44,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:44,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,310 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,310 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 162 predicate places. [2021-08-13 12:51:44,310 INFO L482 AbstractCegarLoop]: Abstraction has has 206 places, 727 transitions, 32620 flow [2021-08-13 12:51:44,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,311 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:44,311 INFO L266 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] [2021-08-13 12:51:44,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 12:51:44,311 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:44,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:44,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1352820231, now seen corresponding path program 23 times [2021-08-13 12:51:44,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:44,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150916992] [2021-08-13 12:51:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:44,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:44,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:44,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:44,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:44,326 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:44,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:44,332 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:44,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:44,341 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:44,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:44,354 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:44,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:44,371 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:44,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:44,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:44,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150916992] [2021-08-13 12:51:44,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150916992] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:44,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:44,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:44,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284476055] [2021-08-13 12:51:44,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:44,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:44,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:44,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:44,390 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:44,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 727 transitions, 32620 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:44,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:44,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:44,823 INFO L129 PetriNetUnfolder]: 229/1907 cut-off events. [2021-08-13 12:51:44,823 INFO L130 PetriNetUnfolder]: For 116981/179209 co-relation queries the response was YES. [2021-08-13 12:51:44,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19459 conditions, 1907 events. 229/1907 cut-off events. For 116981/179209 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 23400 event pairs, 0 based on Foata normal form. 235/2079 useless extension candidates. Maximal degree in co-relation 16499. Up to 413 conditions per place. [2021-08-13 12:51:44,840 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 540 selfloop transitions, 166 changer transitions 0/726 dead transitions. [2021-08-13 12:51:44,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 726 transitions, 33986 flow [2021-08-13 12:51:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:44,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:44,841 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:44,841 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:44,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:44,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:44,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:44,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,842 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,843 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 169 predicate places. [2021-08-13 12:51:44,843 INFO L482 AbstractCegarLoop]: Abstraction has has 213 places, 726 transitions, 33986 flow [2021-08-13 12:51:44,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,843 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:44,843 INFO L266 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] [2021-08-13 12:51:44,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-13 12:51:44,843 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:44,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:44,843 INFO L82 PathProgramCache]: Analyzing trace with hash 104422249, now seen corresponding path program 24 times [2021-08-13 12:51:44,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:44,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254762178] [2021-08-13 12:51:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:44,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:44,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:44,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:44,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:44,865 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:44,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:44,873 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:44,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:44,883 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:44,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:44,898 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:44,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:44,918 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:44,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:44,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:44,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254762178] [2021-08-13 12:51:44,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254762178] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:44,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:44,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:44,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341554866] [2021-08-13 12:51:44,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:44,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:44,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:44,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:44,936 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:44,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 726 transitions, 33986 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:44,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:44,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:45,524 INFO L129 PetriNetUnfolder]: 214/2136 cut-off events. [2021-08-13 12:51:45,524 INFO L130 PetriNetUnfolder]: For 125139/184580 co-relation queries the response was YES. [2021-08-13 12:51:45,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22261 conditions, 2136 events. 214/2136 cut-off events. For 125139/184580 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 27513 event pairs, 0 based on Foata normal form. 201/2259 useless extension candidates. Maximal degree in co-relation 18436. Up to 483 conditions per place. [2021-08-13 12:51:45,543 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 587 selfloop transitions, 189 changer transitions 0/796 dead transitions. [2021-08-13 12:51:45,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 796 transitions, 38898 flow [2021-08-13 12:51:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:45,544 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:45,544 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:45,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:45,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:45,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:45,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,546 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,546 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 176 predicate places. [2021-08-13 12:51:45,546 INFO L482 AbstractCegarLoop]: Abstraction has has 220 places, 796 transitions, 38898 flow [2021-08-13 12:51:45,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,546 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:45,546 INFO L266 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] [2021-08-13 12:51:45,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-13 12:51:45,546 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:45,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:45,547 INFO L82 PathProgramCache]: Analyzing trace with hash -580118471, now seen corresponding path program 25 times [2021-08-13 12:51:45,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:45,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802525843] [2021-08-13 12:51:45,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:45,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:45,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:45,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:45,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:45,566 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:45,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:45,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:45,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:45,580 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:45,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:45,592 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:45,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:45,609 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:45,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:45,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:45,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802525843] [2021-08-13 12:51:45,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802525843] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:45,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:45,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:45,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146482004] [2021-08-13 12:51:45,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:45,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:45,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:45,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:45,627 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:45,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 796 transitions, 38898 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:45,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:45,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:46,081 INFO L129 PetriNetUnfolder]: 215/2137 cut-off events. [2021-08-13 12:51:46,081 INFO L130 PetriNetUnfolder]: For 124094/173636 co-relation queries the response was YES. [2021-08-13 12:51:46,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23016 conditions, 2137 events. 215/2137 cut-off events. For 124094/173636 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 27529 event pairs, 0 based on Foata normal form. 174/2232 useless extension candidates. Maximal degree in co-relation 19084. Up to 482 conditions per place. [2021-08-13 12:51:46,101 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 586 selfloop transitions, 189 changer transitions 0/795 dead transitions. [2021-08-13 12:51:46,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 795 transitions, 40398 flow [2021-08-13 12:51:46,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:46,102 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:46,102 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:46,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:46,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:46,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:46,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,103 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,103 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 183 predicate places. [2021-08-13 12:51:46,103 INFO L482 AbstractCegarLoop]: Abstraction has has 227 places, 795 transitions, 40398 flow [2021-08-13 12:51:46,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,103 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:46,104 INFO L266 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] [2021-08-13 12:51:46,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-13 12:51:46,104 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:46,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:46,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1416147205, now seen corresponding path program 26 times [2021-08-13 12:51:46,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:46,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498609404] [2021-08-13 12:51:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:46,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:46,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:46,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:46,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:46,119 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:46,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:46,125 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:46,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:46,133 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:46,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:46,146 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:46,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:46,163 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:46,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:46,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:46,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498609404] [2021-08-13 12:51:46,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498609404] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:46,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:46,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:46,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001588231] [2021-08-13 12:51:46,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:46,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:46,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:46,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:46,181 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:46,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 795 transitions, 40398 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:46,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:46,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:46,694 INFO L129 PetriNetUnfolder]: 215/2126 cut-off events. [2021-08-13 12:51:46,694 INFO L130 PetriNetUnfolder]: For 135253/186937 co-relation queries the response was YES. [2021-08-13 12:51:46,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23735 conditions, 2126 events. 215/2126 cut-off events. For 135253/186937 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 27385 event pairs, 0 based on Foata normal form. 174/2223 useless extension candidates. Maximal degree in co-relation 19698. Up to 481 conditions per place. [2021-08-13 12:51:46,716 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 590 selfloop transitions, 184 changer transitions 0/794 dead transitions. [2021-08-13 12:51:46,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 794 transitions, 41894 flow [2021-08-13 12:51:46,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:46,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:46,717 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:46,717 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:46,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:46,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:46,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:46,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,718 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,718 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places. [2021-08-13 12:51:46,719 INFO L482 AbstractCegarLoop]: Abstraction has has 234 places, 794 transitions, 41894 flow [2021-08-13 12:51:46,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,719 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:46,719 INFO L266 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] [2021-08-13 12:51:46,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-13 12:51:46,719 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:46,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:46,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1216394373, now seen corresponding path program 27 times [2021-08-13 12:51:46,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:46,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205599146] [2021-08-13 12:51:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:46,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:46,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:46,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:46,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:46,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:46,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:46,741 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:46,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:46,750 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:46,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:46,762 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:46,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:46,780 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:46,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:46,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:46,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205599146] [2021-08-13 12:51:46,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205599146] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:46,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:46,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:46,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876547697] [2021-08-13 12:51:46,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:46,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:46,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:46,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:46,798 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:46,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 794 transitions, 41894 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:46,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:46,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:47,390 INFO L129 PetriNetUnfolder]: 214/2136 cut-off events. [2021-08-13 12:51:47,390 INFO L130 PetriNetUnfolder]: For 113649/147025 co-relation queries the response was YES. [2021-08-13 12:51:47,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24517 conditions, 2136 events. 214/2136 cut-off events. For 113649/147025 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 27536 event pairs, 0 based on Foata normal form. 118/2176 useless extension candidates. Maximal degree in co-relation 20377. Up to 480 conditions per place. [2021-08-13 12:51:47,416 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 589 selfloop transitions, 184 changer transitions 0/793 dead transitions. [2021-08-13 12:51:47,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 793 transitions, 43386 flow [2021-08-13 12:51:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:47,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:47,417 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:47,417 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:47,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:47,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:47,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:47,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,418 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,419 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 197 predicate places. [2021-08-13 12:51:47,419 INFO L482 AbstractCegarLoop]: Abstraction has has 241 places, 793 transitions, 43386 flow [2021-08-13 12:51:47,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,419 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:47,419 INFO L266 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] [2021-08-13 12:51:47,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-13 12:51:47,419 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:47,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1772785765, now seen corresponding path program 28 times [2021-08-13 12:51:47,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:47,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044784873] [2021-08-13 12:51:47,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:47,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:47,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:47,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:47,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:47,436 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:47,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:47,442 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:47,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:47,452 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:47,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:47,466 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:47,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:47,485 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:47,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:47,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:47,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044784873] [2021-08-13 12:51:47,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044784873] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:47,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:47,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:47,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568692074] [2021-08-13 12:51:47,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:47,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:47,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:47,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:47,503 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:47,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 793 transitions, 43386 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:47,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:47,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:48,077 INFO L129 PetriNetUnfolder]: 215/2133 cut-off events. [2021-08-13 12:51:48,077 INFO L130 PetriNetUnfolder]: For 136559/176160 co-relation queries the response was YES. [2021-08-13 12:51:48,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25254 conditions, 2133 events. 215/2133 cut-off events. For 136559/176160 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 27463 event pairs, 0 based on Foata normal form. 146/2198 useless extension candidates. Maximal degree in co-relation 21013. Up to 479 conditions per place. [2021-08-13 12:51:48,102 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 589 selfloop transitions, 183 changer transitions 0/792 dead transitions. [2021-08-13 12:51:48,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 792 transitions, 44874 flow [2021-08-13 12:51:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:48,103 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:48,103 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:48,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:48,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:48,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:48,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,104 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,105 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 204 predicate places. [2021-08-13 12:51:48,105 INFO L482 AbstractCegarLoop]: Abstraction has has 248 places, 792 transitions, 44874 flow [2021-08-13 12:51:48,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,105 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:48,105 INFO L266 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] [2021-08-13 12:51:48,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-13 12:51:48,105 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:48,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:48,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1218730893, now seen corresponding path program 29 times [2021-08-13 12:51:48,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:48,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453754460] [2021-08-13 12:51:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:48,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:48,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:48,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:48,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:48,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:48,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:48,130 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:48,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:48,140 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:48,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:48,153 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:48,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:48,172 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:48,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:48,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:48,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453754460] [2021-08-13 12:51:48,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453754460] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:48,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:48,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:48,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226054387] [2021-08-13 12:51:48,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:48,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:48,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:48,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:48,190 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:48,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 792 transitions, 44874 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:48,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:48,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:48,797 INFO L129 PetriNetUnfolder]: 215/2134 cut-off events. [2021-08-13 12:51:48,798 INFO L130 PetriNetUnfolder]: For 208997/288949 co-relation queries the response was YES. [2021-08-13 12:51:48,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26003 conditions, 2134 events. 215/2134 cut-off events. For 208997/288949 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 27510 event pairs, 0 based on Foata normal form. 235/2289 useless extension candidates. Maximal degree in co-relation 21663. Up to 478 conditions per place. [2021-08-13 12:51:48,823 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 556 selfloop transitions, 150 changer transitions 65/791 dead transitions. [2021-08-13 12:51:48,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 791 transitions, 46358 flow [2021-08-13 12:51:48,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:48,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:48,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:48,824 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:48,824 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:48,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:48,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:48,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:48,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,826 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,826 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 211 predicate places. [2021-08-13 12:51:48,826 INFO L482 AbstractCegarLoop]: Abstraction has has 255 places, 791 transitions, 46358 flow [2021-08-13 12:51:48,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,826 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:48,826 INFO L266 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] [2021-08-13 12:51:48,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-13 12:51:48,826 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:48,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:48,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2136725427, now seen corresponding path program 30 times [2021-08-13 12:51:48,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:48,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93209119] [2021-08-13 12:51:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:48,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:48,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:48,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:48,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:48,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:48,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:48,853 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:48,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:48,870 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 12:51:48,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:48,893 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:48,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:48,912 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:48,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:48,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:48,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93209119] [2021-08-13 12:51:48,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93209119] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:48,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:48,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:48,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529799589] [2021-08-13 12:51:48,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:48,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:48,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:48,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:48,930 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:48,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 791 transitions, 46358 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:48,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:48,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:49,603 INFO L129 PetriNetUnfolder]: 219/2306 cut-off events. [2021-08-13 12:51:49,603 INFO L130 PetriNetUnfolder]: For 211525/287274 co-relation queries the response was YES. [2021-08-13 12:51:49,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28413 conditions, 2306 events. 219/2306 cut-off events. For 211525/287274 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 30404 event pairs, 0 based on Foata normal form. 195/2419 useless extension candidates. Maximal degree in co-relation 23432. Up to 511 conditions per place. [2021-08-13 12:51:49,630 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 547 selfloop transitions, 201 changer transitions 67/835 dead transitions. [2021-08-13 12:51:49,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 835 transitions, 50628 flow [2021-08-13 12:51:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:49,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:49,631 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:49,631 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:49,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:49,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:49,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:49,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,632 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,633 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 218 predicate places. [2021-08-13 12:51:49,633 INFO L482 AbstractCegarLoop]: Abstraction has has 262 places, 835 transitions, 50628 flow [2021-08-13 12:51:49,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,633 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:49,633 INFO L266 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] [2021-08-13 12:51:49,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-13 12:51:49,633 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:49,633 INFO L82 PathProgramCache]: Analyzing trace with hash -639423453, now seen corresponding path program 31 times [2021-08-13 12:51:49,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:49,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388374691] [2021-08-13 12:51:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:49,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:49,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:49,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:49,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:49,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:49,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:49,656 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:49,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:49,667 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:49,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:49,681 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:49,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:49,700 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:49,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:49,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:49,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388374691] [2021-08-13 12:51:49,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388374691] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:49,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:49,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:49,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790964901] [2021-08-13 12:51:49,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:49,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:49,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:49,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:49,718 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:49,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 835 transitions, 50628 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:49,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:49,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:50,373 INFO L129 PetriNetUnfolder]: 218/2298 cut-off events. [2021-08-13 12:51:50,373 INFO L130 PetriNetUnfolder]: For 211021/283290 co-relation queries the response was YES. [2021-08-13 12:51:50,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29179 conditions, 2298 events. 218/2298 cut-off events. For 211021/283290 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 30288 event pairs, 0 based on Foata normal form. 282/2500 useless extension candidates. Maximal degree in co-relation 24087. Up to 510 conditions per place. [2021-08-13 12:51:50,572 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 565 selfloop transitions, 182 changer transitions 67/834 dead transitions. [2021-08-13 12:51:50,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 834 transitions, 52194 flow [2021-08-13 12:51:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:50,577 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:50,577 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:50,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:50,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:50,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:50,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,579 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,579 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 225 predicate places. [2021-08-13 12:51:50,579 INFO L482 AbstractCegarLoop]: Abstraction has has 269 places, 834 transitions, 52194 flow [2021-08-13 12:51:50,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,579 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:50,579 INFO L266 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] [2021-08-13 12:51:50,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-13 12:51:50,579 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:50,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:50,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1545052105, now seen corresponding path program 32 times [2021-08-13 12:51:50,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:50,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164419031] [2021-08-13 12:51:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:50,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:50,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:50,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:50,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:50,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:50,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:50,616 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:50,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:50,631 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:51:50,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:51:50,650 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:50,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:50,669 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:50,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:50,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:50,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164419031] [2021-08-13 12:51:50,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164419031] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:50,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:50,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:50,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183380480] [2021-08-13 12:51:50,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:50,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:50,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:50,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:50,690 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:50,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 834 transitions, 52194 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:50,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:50,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:51,306 INFO L129 PetriNetUnfolder]: 219/2355 cut-off events. [2021-08-13 12:51:51,306 INFO L130 PetriNetUnfolder]: For 152815/185880 co-relation queries the response was YES. [2021-08-13 12:51:51,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30456 conditions, 2355 events. 219/2355 cut-off events. For 152815/185880 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 31263 event pairs, 0 based on Foata normal form. 109/2383 useless extension candidates. Maximal degree in co-relation 25075. Up to 520 conditions per place. [2021-08-13 12:51:51,332 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 552 selfloop transitions, 204 changer transitions 69/845 dead transitions. [2021-08-13 12:51:51,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 845 transitions, 54548 flow [2021-08-13 12:51:51,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:51,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:51,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:51,333 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:51,333 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:51,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:51,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:51,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:51,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,334 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,335 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 232 predicate places. [2021-08-13 12:51:51,335 INFO L482 AbstractCegarLoop]: Abstraction has has 276 places, 845 transitions, 54548 flow [2021-08-13 12:51:51,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,335 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:51,335 INFO L266 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] [2021-08-13 12:51:51,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-13 12:51:51,335 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:51,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:51,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1535132151, now seen corresponding path program 33 times [2021-08-13 12:51:51,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:51,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672911550] [2021-08-13 12:51:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:51,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:51,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:51,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:51,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:51,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:51,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:51,356 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:51,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:51,372 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:51,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:51,385 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:51,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:51,404 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:51,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:51,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:51,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672911550] [2021-08-13 12:51:51,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672911550] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:51,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:51,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:51,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722288389] [2021-08-13 12:51:51,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:51,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:51,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:51,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:51,423 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:51,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 845 transitions, 54548 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:51,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:51,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:52,099 INFO L129 PetriNetUnfolder]: 220/2352 cut-off events. [2021-08-13 12:51:52,100 INFO L130 PetriNetUnfolder]: For 177775/217057 co-relation queries the response was YES. [2021-08-13 12:51:52,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31241 conditions, 2352 events. 220/2352 cut-off events. For 177775/217057 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 31200 event pairs, 0 based on Foata normal form. 130/2401 useless extension candidates. Maximal degree in co-relation 25748. Up to 519 conditions per place. [2021-08-13 12:51:52,125 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 554 selfloop transitions, 201 changer transitions 69/844 dead transitions. [2021-08-13 12:51:52,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 844 transitions, 56130 flow [2021-08-13 12:51:52,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:52,126 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:52,126 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:52,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:52,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:52,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:52,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,128 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,128 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 239 predicate places. [2021-08-13 12:51:52,128 INFO L482 AbstractCegarLoop]: Abstraction has has 283 places, 844 transitions, 56130 flow [2021-08-13 12:51:52,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,128 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:52,128 INFO L266 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] [2021-08-13 12:51:52,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-13 12:51:52,128 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:52,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:52,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1761190887, now seen corresponding path program 34 times [2021-08-13 12:51:52,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:52,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929628699] [2021-08-13 12:51:52,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:52,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:52,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:52,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:52,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:52,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:52,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:52,148 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:52,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:52,164 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 12:51:52,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:52,186 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:52,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:52,204 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:52,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:52,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:52,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929628699] [2021-08-13 12:51:52,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929628699] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:52,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:52,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:52,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817315891] [2021-08-13 12:51:52,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:52,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:52,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:52,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:52,224 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:52,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 844 transitions, 56130 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:52,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:52,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:53,149 INFO L129 PetriNetUnfolder]: 219/2358 cut-off events. [2021-08-13 12:51:53,150 INFO L130 PetriNetUnfolder]: For 239994/313168 co-relation queries the response was YES. [2021-08-13 12:51:53,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32055 conditions, 2358 events. 219/2358 cut-off events. For 239994/313168 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 31280 event pairs, 0 based on Foata normal form. 194/2472 useless extension candidates. Maximal degree in co-relation 26452. Up to 518 conditions per place. [2021-08-13 12:51:53,185 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 549 selfloop transitions, 202 changer transitions 72/843 dead transitions. [2021-08-13 12:51:53,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 843 transitions, 57708 flow [2021-08-13 12:51:53,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:53,187 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:53,187 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:53,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:53,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:53,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:53,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,188 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,189 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 246 predicate places. [2021-08-13 12:51:53,189 INFO L482 AbstractCegarLoop]: Abstraction has has 290 places, 843 transitions, 57708 flow [2021-08-13 12:51:53,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,189 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:53,189 INFO L266 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] [2021-08-13 12:51:53,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-13 12:51:53,189 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:53,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:53,190 INFO L82 PathProgramCache]: Analyzing trace with hash -993837255, now seen corresponding path program 35 times [2021-08-13 12:51:53,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:53,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062018594] [2021-08-13 12:51:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:53,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:53,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:53,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:53,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:53,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:53,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:53,218 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:53,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:53,237 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:51:53,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:51:53,260 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:53,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:53,284 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:53,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:53,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:53,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:53,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062018594] [2021-08-13 12:51:53,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062018594] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:53,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:53,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:53,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552959164] [2021-08-13 12:51:53,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:53,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:53,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:53,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:53,307 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:53,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 843 transitions, 57708 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:53,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:53,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:53,911 INFO L129 PetriNetUnfolder]: 220/2350 cut-off events. [2021-08-13 12:51:53,911 INFO L130 PetriNetUnfolder]: For 197860/239711 co-relation queries the response was YES. [2021-08-13 12:51:53,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32819 conditions, 2350 events. 220/2350 cut-off events. For 197860/239711 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 31230 event pairs, 0 based on Foata normal form. 128/2397 useless extension candidates. Maximal degree in co-relation 27108. Up to 517 conditions per place. [2021-08-13 12:51:53,936 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 547 selfloop transitions, 200 changer transitions 75/842 dead transitions. [2021-08-13 12:51:53,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 842 transitions, 59282 flow [2021-08-13 12:51:53,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:53,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:53,938 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:53,938 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:53,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:53,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:53,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:53,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,939 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,939 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 253 predicate places. [2021-08-13 12:51:53,939 INFO L482 AbstractCegarLoop]: Abstraction has has 297 places, 842 transitions, 59282 flow [2021-08-13 12:51:53,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,939 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:53,939 INFO L266 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] [2021-08-13 12:51:53,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-13 12:51:53,939 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:53,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:53,940 INFO L82 PathProgramCache]: Analyzing trace with hash -424435181, now seen corresponding path program 36 times [2021-08-13 12:51:53,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:53,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109147521] [2021-08-13 12:51:53,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:53,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:53,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:53,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:53,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:53,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:53,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:53,960 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:53,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:53,969 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:53,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:53,982 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:53,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:53,999 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:53,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:54,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:54,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109147521] [2021-08-13 12:51:54,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109147521] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:54,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:54,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:54,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554521984] [2021-08-13 12:51:54,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:54,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:54,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:54,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:54,018 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:54,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 842 transitions, 59282 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:54,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:54,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:54,800 INFO L129 PetriNetUnfolder]: 220/2349 cut-off events. [2021-08-13 12:51:54,800 INFO L130 PetriNetUnfolder]: For 194785/232646 co-relation queries the response was YES. [2021-08-13 12:51:54,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33605 conditions, 2349 events. 220/2349 cut-off events. For 194785/232646 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 31154 event pairs, 0 based on Foata normal form. 139/2407 useless extension candidates. Maximal degree in co-relation 27788. Up to 516 conditions per place. [2021-08-13 12:51:54,827 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 562 selfloop transitions, 184 changer transitions 75/841 dead transitions. [2021-08-13 12:51:54,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 841 transitions, 60852 flow [2021-08-13 12:51:54,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:54,828 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:54,828 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:54,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:54,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:54,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:54,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,830 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,830 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 260 predicate places. [2021-08-13 12:51:54,830 INFO L482 AbstractCegarLoop]: Abstraction has has 304 places, 841 transitions, 60852 flow [2021-08-13 12:51:54,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,830 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:54,830 INFO L266 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] [2021-08-13 12:51:54,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-13 12:51:54,830 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:54,830 INFO L82 PathProgramCache]: Analyzing trace with hash 2102673325, now seen corresponding path program 37 times [2021-08-13 12:51:54,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:54,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966919581] [2021-08-13 12:51:54,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:54,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:54,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:54,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:54,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:54,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:54,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:54,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:54,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:54,866 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:54,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:54,879 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:54,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:54,897 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:54,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:54,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:54,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966919581] [2021-08-13 12:51:54,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966919581] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:54,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:54,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:54,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440849093] [2021-08-13 12:51:54,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:54,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:54,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:54,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:54,916 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:54,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 841 transitions, 60852 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:54,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:54,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:55,572 INFO L129 PetriNetUnfolder]: 219/2355 cut-off events. [2021-08-13 12:51:55,573 INFO L130 PetriNetUnfolder]: For 225215/270009 co-relation queries the response was YES. [2021-08-13 12:51:55,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34413 conditions, 2355 events. 219/2355 cut-off events. For 225215/270009 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 31283 event pairs, 0 based on Foata normal form. 130/2405 useless extension candidates. Maximal degree in co-relation 28492. Up to 515 conditions per place. [2021-08-13 12:51:55,598 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 545 selfloop transitions, 194 changer transitions 81/840 dead transitions. [2021-08-13 12:51:55,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 840 transitions, 62418 flow [2021-08-13 12:51:55,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:55,599 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:55,599 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:55,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:55,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:55,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:55,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,600 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,600 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 267 predicate places. [2021-08-13 12:51:55,600 INFO L482 AbstractCegarLoop]: Abstraction has has 311 places, 840 transitions, 62418 flow [2021-08-13 12:51:55,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,601 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:55,601 INFO L266 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] [2021-08-13 12:51:55,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-13 12:51:55,601 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:55,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:55,601 INFO L82 PathProgramCache]: Analyzing trace with hash -190290661, now seen corresponding path program 38 times [2021-08-13 12:51:55,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:55,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782376185] [2021-08-13 12:51:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:55,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:55,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:55,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:55,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:55,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:55,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:55,621 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:55,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:55,630 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:55,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:55,642 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:55,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:55,660 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:55,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:55,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:55,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782376185] [2021-08-13 12:51:55,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782376185] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:55,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:55,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:55,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447361803] [2021-08-13 12:51:55,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:55,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:55,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:55,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:55,678 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:55,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 840 transitions, 62418 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:55,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:55,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:56,363 INFO L129 PetriNetUnfolder]: 219/2345 cut-off events. [2021-08-13 12:51:56,363 INFO L130 PetriNetUnfolder]: For 217173/257138 co-relation queries the response was YES. [2021-08-13 12:51:56,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35167 conditions, 2345 events. 219/2345 cut-off events. For 217173/257138 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 31073 event pairs, 0 based on Foata normal form. 139/2404 useless extension candidates. Maximal degree in co-relation 29144. Up to 514 conditions per place. [2021-08-13 12:51:56,390 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 555 selfloop transitions, 183 changer transitions 81/839 dead transitions. [2021-08-13 12:51:56,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 839 transitions, 63980 flow [2021-08-13 12:51:56,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:56,392 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:56,392 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:56,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:56,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:56,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:56,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,393 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,394 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 274 predicate places. [2021-08-13 12:51:56,394 INFO L482 AbstractCegarLoop]: Abstraction has has 318 places, 839 transitions, 63980 flow [2021-08-13 12:51:56,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,394 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:56,394 INFO L266 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] [2021-08-13 12:51:56,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-13 12:51:56,394 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:56,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:56,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1516740207, now seen corresponding path program 39 times [2021-08-13 12:51:56,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:56,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460406314] [2021-08-13 12:51:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:56,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:56,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:56,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:56,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:56,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:56,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:56,415 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:56,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:56,424 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:56,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:56,436 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:51:56,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:51:56,454 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:56,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:56,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:56,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460406314] [2021-08-13 12:51:56,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460406314] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:56,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:56,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:56,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100358904] [2021-08-13 12:51:56,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:56,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:56,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:56,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:56,472 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:56,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 839 transitions, 63980 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:56,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:56,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:57,151 INFO L129 PetriNetUnfolder]: 219/2347 cut-off events. [2021-08-13 12:51:57,151 INFO L130 PetriNetUnfolder]: For 228860/269715 co-relation queries the response was YES. [2021-08-13 12:51:57,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35955 conditions, 2347 events. 219/2347 cut-off events. For 228860/269715 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 31115 event pairs, 0 based on Foata normal form. 139/2406 useless extension candidates. Maximal degree in co-relation 29832. Up to 513 conditions per place. [2021-08-13 12:51:57,178 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 556 selfloop transitions, 181 changer transitions 81/838 dead transitions. [2021-08-13 12:51:57,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 838 transitions, 65538 flow [2021-08-13 12:51:57,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:57,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:57,180 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:57,180 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:57,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:57,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:57,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:57,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:57,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:57,181 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:57,181 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 281 predicate places. [2021-08-13 12:51:57,181 INFO L482 AbstractCegarLoop]: Abstraction has has 325 places, 838 transitions, 65538 flow [2021-08-13 12:51:57,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:57,181 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:57,181 INFO L266 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] [2021-08-13 12:51:57,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-13 12:51:57,181 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:57,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:57,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1406620425, now seen corresponding path program 40 times [2021-08-13 12:51:57,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:57,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059797549] [2021-08-13 12:51:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:57,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:57,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:57,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:57,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:57,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:57,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:57,203 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:57,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:57,212 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:57,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:57,224 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:57,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:57,242 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:57,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:57,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:57,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059797549] [2021-08-13 12:51:57,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059797549] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:57,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:57,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:57,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309646569] [2021-08-13 12:51:57,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:57,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:57,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:57,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:57,260 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:57,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 838 transitions, 65538 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:57,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:57,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:57,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:58,120 INFO L129 PetriNetUnfolder]: 220/2348 cut-off events. [2021-08-13 12:51:58,121 INFO L130 PetriNetUnfolder]: For 264537/313597 co-relation queries the response was YES. [2021-08-13 12:51:58,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36738 conditions, 2348 events. 220/2348 cut-off events. For 264537/313597 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 31125 event pairs, 0 based on Foata normal form. 160/2429 useless extension candidates. Maximal degree in co-relation 30517. Up to 512 conditions per place. [2021-08-13 12:51:58,155 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 556 selfloop transitions, 180 changer transitions 81/837 dead transitions. [2021-08-13 12:51:58,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 837 transitions, 67092 flow [2021-08-13 12:51:58,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:58,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:58,156 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:58,156 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:58,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:58,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:58,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:58,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,158 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,158 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 288 predicate places. [2021-08-13 12:51:58,158 INFO L482 AbstractCegarLoop]: Abstraction has has 332 places, 837 transitions, 67092 flow [2021-08-13 12:51:58,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,158 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:58,158 INFO L266 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] [2021-08-13 12:51:58,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-13 12:51:58,158 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:58,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1946340419, now seen corresponding path program 41 times [2021-08-13 12:51:58,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:58,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582829769] [2021-08-13 12:51:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:58,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:58,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:58,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:58,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:58,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:58,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:58,181 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:58,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:58,191 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:58,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:58,205 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:58,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:58,223 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:58,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:58,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:58,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582829769] [2021-08-13 12:51:58,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582829769] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:58,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:58,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:58,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897417942] [2021-08-13 12:51:58,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:58,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:58,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:58,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:58,242 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:58,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 837 transitions, 67092 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:58,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:58,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:59,012 INFO L129 PetriNetUnfolder]: 219/2351 cut-off events. [2021-08-13 12:51:59,012 INFO L130 PetriNetUnfolder]: For 252316/295347 co-relation queries the response was YES. [2021-08-13 12:51:59,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37527 conditions, 2351 events. 219/2351 cut-off events. For 252316/295347 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 31215 event pairs, 0 based on Foata normal form. 137/2408 useless extension candidates. Maximal degree in co-relation 31210. Up to 511 conditions per place. [2021-08-13 12:51:59,044 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 548 selfloop transitions, 171 changer transitions 97/836 dead transitions. [2021-08-13 12:51:59,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 836 transitions, 68642 flow [2021-08-13 12:51:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:59,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:59,045 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:59,045 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:59,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:59,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:59,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:59,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,046 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,046 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 295 predicate places. [2021-08-13 12:51:59,047 INFO L482 AbstractCegarLoop]: Abstraction has has 339 places, 836 transitions, 68642 flow [2021-08-13 12:51:59,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,047 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:59,047 INFO L266 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] [2021-08-13 12:51:59,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-13 12:51:59,047 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:59,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:59,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1035894327, now seen corresponding path program 42 times [2021-08-13 12:51:59,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:59,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493499746] [2021-08-13 12:51:59,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:59,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:59,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:59,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:59,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:59,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:59,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:59,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:59,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:51:59,167 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:59,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:59,179 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:51:59,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:51:59,196 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:51:59,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:51:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:59,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:59,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493499746] [2021-08-13 12:51:59,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493499746] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:59,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:59,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:51:59,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131855972] [2021-08-13 12:51:59,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:51:59,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:59,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:51:59,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:51:59,215 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:51:59,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 836 transitions, 68642 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:59,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:51:59,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:59,931 INFO L129 PetriNetUnfolder]: 220/2576 cut-off events. [2021-08-13 12:51:59,931 INFO L130 PetriNetUnfolder]: For 283197/327322 co-relation queries the response was YES. [2021-08-13 12:51:59,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41124 conditions, 2576 events. 220/2576 cut-off events. For 283197/327322 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 35136 event pairs, 0 based on Foata normal form. 109/2599 useless extension candidates. Maximal degree in co-relation 33747. Up to 546 conditions per place. [2021-08-13 12:51:59,959 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 584 selfloop transitions, 189 changer transitions 99/892 dead transitions. [2021-08-13 12:51:59,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 892 transitions, 75090 flow [2021-08-13 12:51:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:51:59,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:51:59,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:51:59,960 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:51:59,960 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:51:59,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:51:59,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:59,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:51:59,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,961 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,962 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 302 predicate places. [2021-08-13 12:51:59,962 INFO L482 AbstractCegarLoop]: Abstraction has has 346 places, 892 transitions, 75090 flow [2021-08-13 12:51:59,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,962 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:59,962 INFO L266 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] [2021-08-13 12:51:59,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-13 12:51:59,962 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:59,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:59,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1329069149, now seen corresponding path program 43 times [2021-08-13 12:51:59,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:59,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339688967] [2021-08-13 12:51:59,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:59,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:59,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:59,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:59,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:59,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:59,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:59,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:59,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:51:59,988 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:59,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:00,000 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:00,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:00,018 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:00,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:00,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:00,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:00,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339688967] [2021-08-13 12:52:00,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339688967] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:00,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:00,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:00,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048827498] [2021-08-13 12:52:00,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:00,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:00,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:00,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:00,036 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:00,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 892 transitions, 75090 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:00,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:00,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:00,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:00,940 INFO L129 PetriNetUnfolder]: 221/2574 cut-off events. [2021-08-13 12:52:00,940 INFO L130 PetriNetUnfolder]: For 326279/379821 co-relation queries the response was YES. [2021-08-13 12:52:00,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41949 conditions, 2574 events. 221/2574 cut-off events. For 326279/379821 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 35098 event pairs, 0 based on Foata normal form. 130/2614 useless extension candidates. Maximal degree in co-relation 34459. Up to 545 conditions per place. [2021-08-13 12:52:00,974 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 581 selfloop transitions, 191 changer transitions 99/891 dead transitions. [2021-08-13 12:52:00,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 891 transitions, 76746 flow [2021-08-13 12:52:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:00,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:00,975 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:00,975 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:00,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:00,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:00,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:00,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:00,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:00,976 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:00,976 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 309 predicate places. [2021-08-13 12:52:00,977 INFO L482 AbstractCegarLoop]: Abstraction has has 353 places, 891 transitions, 76746 flow [2021-08-13 12:52:00,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:00,977 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:00,977 INFO L266 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] [2021-08-13 12:52:00,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-13 12:52:00,977 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:00,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:00,977 INFO L82 PathProgramCache]: Analyzing trace with hash 206153001, now seen corresponding path program 44 times [2021-08-13 12:52:00,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:00,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050167635] [2021-08-13 12:52:00,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:00,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:00,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:00,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:00,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:00,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:00,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:00,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:00,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:01,006 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:01,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:01,019 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:01,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:01,037 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:01,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:01,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:01,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050167635] [2021-08-13 12:52:01,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050167635] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:01,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:01,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:01,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475932224] [2021-08-13 12:52:01,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:01,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:01,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:01,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:01,055 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:01,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 891 transitions, 76746 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:01,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:01,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:01,933 INFO L129 PetriNetUnfolder]: 220/2572 cut-off events. [2021-08-13 12:52:01,934 INFO L130 PetriNetUnfolder]: For 311842/358455 co-relation queries the response was YES. [2021-08-13 12:52:01,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42774 conditions, 2572 events. 220/2572 cut-off events. For 311842/358455 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 35031 event pairs, 0 based on Foata normal form. 111/2598 useless extension candidates. Maximal degree in co-relation 35173. Up to 544 conditions per place. [2021-08-13 12:52:01,965 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 581 selfloop transitions, 187 changer transitions 102/890 dead transitions. [2021-08-13 12:52:01,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 890 transitions, 78398 flow [2021-08-13 12:52:01,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:01,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:01,966 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:01,966 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:01,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:01,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:01,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:01,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,967 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,967 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 316 predicate places. [2021-08-13 12:52:01,967 INFO L482 AbstractCegarLoop]: Abstraction has has 360 places, 890 transitions, 78398 flow [2021-08-13 12:52:01,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,967 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:01,967 INFO L266 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] [2021-08-13 12:52:01,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-13 12:52:01,967 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:01,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:01,968 INFO L82 PathProgramCache]: Analyzing trace with hash -397625373, now seen corresponding path program 45 times [2021-08-13 12:52:01,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:01,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195829473] [2021-08-13 12:52:01,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:01,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:01,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:01,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:01,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:01,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:01,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:01,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:01,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:01,994 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:52:01,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:52:02,016 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:52:02,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:52:02,034 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:02,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:02,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:02,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195829473] [2021-08-13 12:52:02,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195829473] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:02,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:02,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:02,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54179257] [2021-08-13 12:52:02,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:02,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:02,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:02,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:02,057 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:02,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 890 transitions, 78398 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:02,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:02,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:02,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:02,906 INFO L129 PetriNetUnfolder]: 220/2559 cut-off events. [2021-08-13 12:52:02,906 INFO L130 PetriNetUnfolder]: For 326169/373936 co-relation queries the response was YES. [2021-08-13 12:52:02,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43564 conditions, 2559 events. 220/2559 cut-off events. For 326169/373936 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 34857 event pairs, 0 based on Foata normal form. 111/2586 useless extension candidates. Maximal degree in co-relation 35854. Up to 543 conditions per place. [2021-08-13 12:52:02,938 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 575 selfloop transitions, 190 changer transitions 104/889 dead transitions. [2021-08-13 12:52:02,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 889 transitions, 80046 flow [2021-08-13 12:52:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:02,939 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:02,939 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:02,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:02,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:02,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:02,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:02,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:02,940 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:02,940 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 323 predicate places. [2021-08-13 12:52:02,940 INFO L482 AbstractCegarLoop]: Abstraction has has 367 places, 889 transitions, 80046 flow [2021-08-13 12:52:02,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:02,940 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:02,940 INFO L266 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] [2021-08-13 12:52:02,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-13 12:52:02,940 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:02,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:02,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1218972797, now seen corresponding path program 46 times [2021-08-13 12:52:02,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:02,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763316355] [2021-08-13 12:52:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:02,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:02,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:02,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:02,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:02,968 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:52:02,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:52:02,989 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:02,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:03,007 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:03,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:03,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:03,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763316355] [2021-08-13 12:52:03,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763316355] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:03,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:03,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:03,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133591311] [2021-08-13 12:52:03,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:03,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:03,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:03,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:03,027 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:03,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 889 transitions, 80046 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:03,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:03,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:03,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:03,887 INFO L129 PetriNetUnfolder]: 220/2565 cut-off events. [2021-08-13 12:52:03,888 INFO L130 PetriNetUnfolder]: For 374691/432655 co-relation queries the response was YES. [2021-08-13 12:52:03,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44409 conditions, 2565 events. 220/2565 cut-off events. For 374691/432655 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 34920 event pairs, 0 based on Foata normal form. 130/2609 useless extension candidates. Maximal degree in co-relation 36592. Up to 542 conditions per place. [2021-08-13 12:52:03,919 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 573 selfloop transitions, 188 changer transitions 107/888 dead transitions. [2021-08-13 12:52:03,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 888 transitions, 81690 flow [2021-08-13 12:52:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:03,920 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:03,920 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:03,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:03,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:03,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:03,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:03,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:03,922 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:03,922 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 330 predicate places. [2021-08-13 12:52:03,922 INFO L482 AbstractCegarLoop]: Abstraction has has 374 places, 888 transitions, 81690 flow [2021-08-13 12:52:03,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:03,922 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:03,922 INFO L266 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] [2021-08-13 12:52:03,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-13 12:52:03,922 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:03,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:03,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1134436223, now seen corresponding path program 47 times [2021-08-13 12:52:03,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:03,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131399561] [2021-08-13 12:52:03,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:03,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:03,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:03,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:03,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:03,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:03,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:03,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:03,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:03,953 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:03,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:03,966 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:52:03,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:52:03,984 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:03,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:04,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:04,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131399561] [2021-08-13 12:52:04,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131399561] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:04,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:04,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:04,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454270876] [2021-08-13 12:52:04,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:04,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:04,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:04,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:04,002 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:04,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 888 transitions, 81690 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:04,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:04,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:04,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:05,112 INFO L129 PetriNetUnfolder]: 221/2573 cut-off events. [2021-08-13 12:52:05,112 INFO L130 PetriNetUnfolder]: For 354766/404829 co-relation queries the response was YES. [2021-08-13 12:52:05,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45254 conditions, 2573 events. 221/2573 cut-off events. For 354766/404829 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 35055 event pairs, 0 based on Foata normal form. 109/2594 useless extension candidates. Maximal degree in co-relation 37332. Up to 541 conditions per place. [2021-08-13 12:52:05,143 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 571 selfloop transitions, 183 changer transitions 113/887 dead transitions. [2021-08-13 12:52:05,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 887 transitions, 83330 flow [2021-08-13 12:52:05,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:05,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:05,145 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:05,146 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:05,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:05,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:05,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:05,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:05,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:05,147 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:05,147 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 337 predicate places. [2021-08-13 12:52:05,147 INFO L482 AbstractCegarLoop]: Abstraction has has 381 places, 887 transitions, 83330 flow [2021-08-13 12:52:05,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:05,147 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:05,147 INFO L266 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] [2021-08-13 12:52:05,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-13 12:52:05,147 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:05,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:05,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1035835787, now seen corresponding path program 48 times [2021-08-13 12:52:05,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:05,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220075826] [2021-08-13 12:52:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:05,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:05,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:05,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:05,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:05,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:05,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:05,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:05,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:05,173 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 12:52:05,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:05,201 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:05,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:05,217 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:05,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:05,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:05,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:05,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220075826] [2021-08-13 12:52:05,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220075826] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:05,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:05,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:05,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308016131] [2021-08-13 12:52:05,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:05,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:05,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:05,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:05,234 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:05,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 887 transitions, 83330 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:05,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:05,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:05,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:06,228 INFO L129 PetriNetUnfolder]: 219/2798 cut-off events. [2021-08-13 12:52:06,228 INFO L130 PetriNetUnfolder]: For 429936/490235 co-relation queries the response was YES. [2021-08-13 12:52:06,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49414 conditions, 2798 events. 219/2798 cut-off events. For 429936/490235 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 39053 event pairs, 0 based on Foata normal form. 128/2833 useless extension candidates. Maximal degree in co-relation 40141. Up to 598 conditions per place. [2021-08-13 12:52:06,263 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 613 selfloop transitions, 199 changer transitions 115/947 dead transitions. [2021-08-13 12:52:06,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 947 transitions, 90944 flow [2021-08-13 12:52:06,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:06,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:06,264 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:06,264 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:06,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:06,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:06,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:06,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:06,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:06,265 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:06,265 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 344 predicate places. [2021-08-13 12:52:06,265 INFO L482 AbstractCegarLoop]: Abstraction has has 388 places, 947 transitions, 90944 flow [2021-08-13 12:52:06,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:06,265 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:06,265 INFO L266 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] [2021-08-13 12:52:06,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-13 12:52:06,265 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:06,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:06,266 INFO L82 PathProgramCache]: Analyzing trace with hash 979094025, now seen corresponding path program 49 times [2021-08-13 12:52:06,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:06,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128480046] [2021-08-13 12:52:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:06,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:06,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:06,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:06,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:06,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:06,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:06,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:06,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:06,304 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 12:52:06,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:06,324 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:06,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:06,354 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:06,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:06,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:06,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128480046] [2021-08-13 12:52:06,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128480046] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:06,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:06,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:06,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937793089] [2021-08-13 12:52:06,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:06,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:06,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:06,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:06,371 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:06,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 947 transitions, 90944 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:06,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:06,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:06,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:07,402 INFO L129 PetriNetUnfolder]: 218/2794 cut-off events. [2021-08-13 12:52:07,402 INFO L130 PetriNetUnfolder]: For 571775/680439 co-relation queries the response was YES. [2021-08-13 12:52:07,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50286 conditions, 2794 events. 218/2794 cut-off events. For 571775/680439 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 38898 event pairs, 0 based on Foata normal form. 194/2895 useless extension candidates. Maximal degree in co-relation 40888. Up to 597 conditions per place. [2021-08-13 12:52:07,435 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 610 selfloop transitions, 198 changer transitions 118/946 dead transitions. [2021-08-13 12:52:07,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 946 transitions, 92698 flow [2021-08-13 12:52:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:07,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:07,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:07,436 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:07,436 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:07,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:07,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:07,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:07,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:07,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:07,437 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:07,437 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 351 predicate places. [2021-08-13 12:52:07,437 INFO L482 AbstractCegarLoop]: Abstraction has has 395 places, 946 transitions, 92698 flow [2021-08-13 12:52:07,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:07,437 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:07,437 INFO L266 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] [2021-08-13 12:52:07,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-13 12:52:07,438 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:07,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:07,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1351968765, now seen corresponding path program 50 times [2021-08-13 12:52:07,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:07,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158457075] [2021-08-13 12:52:07,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:07,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:07,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:07,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:07,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:07,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:07,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:07,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:07,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:07,469 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:07,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:07,492 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:07,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:07,515 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:07,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:07,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:07,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158457075] [2021-08-13 12:52:07,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158457075] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:07,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:07,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:07,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142057807] [2021-08-13 12:52:07,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:07,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:07,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:07,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:07,542 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:07,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 946 transitions, 92698 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:07,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:07,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:07,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:08,833 INFO L129 PetriNetUnfolder]: 219/2798 cut-off events. [2021-08-13 12:52:08,833 INFO L130 PetriNetUnfolder]: For 474015/537875 co-relation queries the response was YES. [2021-08-13 12:52:08,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51174 conditions, 2798 events. 219/2798 cut-off events. For 474015/537875 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 39039 event pairs, 0 based on Foata normal form. 130/2833 useless extension candidates. Maximal degree in co-relation 41653. Up to 596 conditions per place. [2021-08-13 12:52:08,868 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 609 selfloop transitions, 198 changer transitions 118/945 dead transitions. [2021-08-13 12:52:08,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 945 transitions, 94448 flow [2021-08-13 12:52:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:08,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:08,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:08,869 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:08,869 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:08,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:08,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:08,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:08,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,870 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,870 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 358 predicate places. [2021-08-13 12:52:08,870 INFO L482 AbstractCegarLoop]: Abstraction has has 402 places, 945 transitions, 94448 flow [2021-08-13 12:52:08,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,871 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:08,871 INFO L266 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] [2021-08-13 12:52:08,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-13 12:52:08,871 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:08,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1832296861, now seen corresponding path program 51 times [2021-08-13 12:52:08,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:08,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937584250] [2021-08-13 12:52:08,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:08,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:08,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:08,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:08,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:08,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:08,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:08,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:08,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:08,898 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:08,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:08,910 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:08,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:08,928 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:08,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:08,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:08,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937584250] [2021-08-13 12:52:08,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937584250] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:08,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:08,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:08,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558368603] [2021-08-13 12:52:08,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:08,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:08,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:08,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:08,946 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:08,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 945 transitions, 94448 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:08,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:08,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:10,251 INFO L129 PetriNetUnfolder]: 218/2794 cut-off events. [2021-08-13 12:52:10,251 INFO L130 PetriNetUnfolder]: For 455446/510771 co-relation queries the response was YES. [2021-08-13 12:52:10,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52040 conditions, 2794 events. 218/2794 cut-off events. For 455446/510771 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 38930 event pairs, 0 based on Foata normal form. 111/2813 useless extension candidates. Maximal degree in co-relation 42398. Up to 595 conditions per place. [2021-08-13 12:52:10,285 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 609 selfloop transitions, 192 changer transitions 123/944 dead transitions. [2021-08-13 12:52:10,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 944 transitions, 96194 flow [2021-08-13 12:52:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:10,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:10,286 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:10,286 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:10,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:10,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:10,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:10,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:10,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:10,287 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:10,287 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 365 predicate places. [2021-08-13 12:52:10,287 INFO L482 AbstractCegarLoop]: Abstraction has has 409 places, 944 transitions, 96194 flow [2021-08-13 12:52:10,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:10,287 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:10,287 INFO L266 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] [2021-08-13 12:52:10,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-13 12:52:10,287 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:10,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:10,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2006396723, now seen corresponding path program 52 times [2021-08-13 12:52:10,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:10,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140984002] [2021-08-13 12:52:10,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:10,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:10,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:10,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:10,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:10,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:10,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:10,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:10,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:10,313 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:10,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:10,325 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:10,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:10,341 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:10,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:10,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:10,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:10,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140984002] [2021-08-13 12:52:10,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140984002] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:10,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:10,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:10,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114602034] [2021-08-13 12:52:10,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:10,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:10,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:10,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:10,360 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:10,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 944 transitions, 96194 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:10,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:10,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:10,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:11,438 INFO L129 PetriNetUnfolder]: 218/2791 cut-off events. [2021-08-13 12:52:11,438 INFO L130 PetriNetUnfolder]: For 704533/837186 co-relation queries the response was YES. [2021-08-13 12:52:11,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52908 conditions, 2791 events. 218/2791 cut-off events. For 704533/837186 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 38936 event pairs, 0 based on Foata normal form. 219/2917 useless extension candidates. Maximal degree in co-relation 43147. Up to 594 conditions per place. [2021-08-13 12:52:11,472 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 608 selfloop transitions, 190 changer transitions 125/943 dead transitions. [2021-08-13 12:52:11,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 943 transitions, 97936 flow [2021-08-13 12:52:11,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:11,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:11,473 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:11,473 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:11,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:11,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:11,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:11,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:11,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:11,474 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:11,474 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 372 predicate places. [2021-08-13 12:52:11,474 INFO L482 AbstractCegarLoop]: Abstraction has has 416 places, 943 transitions, 97936 flow [2021-08-13 12:52:11,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:11,475 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:11,475 INFO L266 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] [2021-08-13 12:52:11,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-13 12:52:11,475 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:11,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:11,475 INFO L82 PathProgramCache]: Analyzing trace with hash 185333151, now seen corresponding path program 53 times [2021-08-13 12:52:11,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:11,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362893877] [2021-08-13 12:52:11,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:11,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:11,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:11,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:11,500 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:11,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:11,512 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:11,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:11,529 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:11,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:11,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:11,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362893877] [2021-08-13 12:52:11,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362893877] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:11,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:11,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:11,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853538406] [2021-08-13 12:52:11,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:11,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:11,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:11,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:11,547 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:11,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 943 transitions, 97936 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:11,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:11,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:11,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:12,641 INFO L129 PetriNetUnfolder]: 219/2795 cut-off events. [2021-08-13 12:52:12,642 INFO L130 PetriNetUnfolder]: For 671681/790053 co-relation queries the response was YES. [2021-08-13 12:52:12,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53790 conditions, 2795 events. 219/2795 cut-off events. For 671681/790053 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 39007 event pairs, 0 based on Foata normal form. 192/2892 useless extension candidates. Maximal degree in co-relation 43912. Up to 593 conditions per place. [2021-08-13 12:52:12,676 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 606 selfloop transitions, 186 changer transitions 130/942 dead transitions. [2021-08-13 12:52:12,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 942 transitions, 99674 flow [2021-08-13 12:52:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:12,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:12,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:12,677 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:12,677 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:12,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:12,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:12,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:12,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:12,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:12,678 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:12,678 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 379 predicate places. [2021-08-13 12:52:12,679 INFO L482 AbstractCegarLoop]: Abstraction has has 423 places, 942 transitions, 99674 flow [2021-08-13 12:52:12,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:12,679 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:12,679 INFO L266 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] [2021-08-13 12:52:12,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-13 12:52:12,679 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:12,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:12,679 INFO L82 PathProgramCache]: Analyzing trace with hash 28103605, now seen corresponding path program 54 times [2021-08-13 12:52:12,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:12,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330342858] [2021-08-13 12:52:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:12,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:12,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:12,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:12,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:12,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:12,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:12,940 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:12,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:12,954 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:52:12,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:52:12,976 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:12,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:12,994 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:12,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:13,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:13,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330342858] [2021-08-13 12:52:13,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330342858] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:13,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:13,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:13,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028286852] [2021-08-13 12:52:13,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:13,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:13,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:13,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:13,013 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:13,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 942 transitions, 99674 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:13,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:13,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:13,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:14,681 INFO L129 PetriNetUnfolder]: 245/3676 cut-off events. [2021-08-13 12:52:14,682 INFO L130 PetriNetUnfolder]: For 895032/1047808 co-relation queries the response was YES. [2021-08-13 12:52:14,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69876 conditions, 3676 events. 245/3676 cut-off events. For 895032/1047808 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 54642 event pairs, 0 based on Foata normal form. 199/3757 useless extension candidates. Maximal degree in co-relation 55475. Up to 755 conditions per place. [2021-08-13 12:52:14,728 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 794 selfloop transitions, 249 changer transitions 130/1193 dead transitions. [2021-08-13 12:52:14,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 1193 transitions, 129128 flow [2021-08-13 12:52:14,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:14,729 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:14,729 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:14,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:14,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:14,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:14,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:14,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:14,732 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:14,732 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 386 predicate places. [2021-08-13 12:52:14,732 INFO L482 AbstractCegarLoop]: Abstraction has has 430 places, 1193 transitions, 129128 flow [2021-08-13 12:52:14,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:14,733 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:14,733 INFO L266 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] [2021-08-13 12:52:14,733 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-13 12:52:14,733 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:14,733 INFO L82 PathProgramCache]: Analyzing trace with hash 358661199, now seen corresponding path program 55 times [2021-08-13 12:52:14,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:14,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8325771] [2021-08-13 12:52:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:14,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:14,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:14,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:14,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:14,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:14,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:14,782 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:14,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:14,790 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:52:14,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:52:14,803 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:52:14,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:52:14,832 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:14,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:14,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:14,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8325771] [2021-08-13 12:52:14,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8325771] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:14,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:14,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:14,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610934836] [2021-08-13 12:52:14,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:14,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:14,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:14,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:14,851 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:14,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1193 transitions, 129128 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:14,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:14,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:14,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:17,173 INFO L129 PetriNetUnfolder]: 245/3673 cut-off events. [2021-08-13 12:52:17,173 INFO L130 PetriNetUnfolder]: For 695051/774602 co-relation queries the response was YES. [2021-08-13 12:52:17,292 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70988 conditions, 3673 events. 245/3673 cut-off events. For 695051/774602 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 54585 event pairs, 0 based on Foata normal form. 140/3697 useless extension candidates. Maximal degree in co-relation 56398. Up to 754 conditions per place. [2021-08-13 12:52:17,306 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 788 selfloop transitions, 254 changer transitions 130/1192 dead transitions. [2021-08-13 12:52:17,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 1192 transitions, 131362 flow [2021-08-13 12:52:17,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:17,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:17,307 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:17,307 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:17,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:17,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:17,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:17,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:17,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:17,308 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:17,308 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 393 predicate places. [2021-08-13 12:52:17,308 INFO L482 AbstractCegarLoop]: Abstraction has has 437 places, 1192 transitions, 131362 flow [2021-08-13 12:52:17,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:17,308 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:17,308 INFO L266 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] [2021-08-13 12:52:17,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-13 12:52:17,308 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:17,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:17,309 INFO L82 PathProgramCache]: Analyzing trace with hash -289771861, now seen corresponding path program 56 times [2021-08-13 12:52:17,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:17,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832344502] [2021-08-13 12:52:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:17,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:17,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:17,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:17,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:17,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:17,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:17,362 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:17,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:17,370 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:52:17,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:52:17,383 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:17,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:17,416 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:17,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:17,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:17,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832344502] [2021-08-13 12:52:17,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832344502] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:17,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:17,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:17,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714723420] [2021-08-13 12:52:17,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:17,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:17,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:17,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:17,435 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:17,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 1192 transitions, 131362 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:17,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:17,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:17,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:19,461 INFO L129 PetriNetUnfolder]: 245/3676 cut-off events. [2021-08-13 12:52:19,461 INFO L130 PetriNetUnfolder]: For 664762/733060 co-relation queries the response was YES. [2021-08-13 12:52:19,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72115 conditions, 3676 events. 245/3676 cut-off events. For 664762/733060 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 54598 event pairs, 0 based on Foata normal form. 113/3671 useless extension candidates. Maximal degree in co-relation 57338. Up to 753 conditions per place. [2021-08-13 12:52:19,511 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 786 selfloop transitions, 255 changer transitions 130/1191 dead transitions. [2021-08-13 12:52:19,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 1191 transitions, 133592 flow [2021-08-13 12:52:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:19,512 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:19,512 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:19,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:19,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:19,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:19,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:19,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:19,513 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:19,513 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 400 predicate places. [2021-08-13 12:52:19,513 INFO L482 AbstractCegarLoop]: Abstraction has has 444 places, 1191 transitions, 133592 flow [2021-08-13 12:52:19,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:19,513 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:19,513 INFO L266 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] [2021-08-13 12:52:19,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-13 12:52:19,514 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:19,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:19,514 INFO L82 PathProgramCache]: Analyzing trace with hash 575310327, now seen corresponding path program 57 times [2021-08-13 12:52:19,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:19,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182723919] [2021-08-13 12:52:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:19,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:19,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:19,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:19,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:19,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:19,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:19,567 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:19,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:19,576 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:52:19,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:52:19,599 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:19,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:19,617 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:19,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:19,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:19,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182723919] [2021-08-13 12:52:19,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182723919] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:19,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:19,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:19,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900178664] [2021-08-13 12:52:19,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:19,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:19,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:19,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:19,636 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:19,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1191 transitions, 133592 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:19,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:19,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:19,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:21,993 INFO L129 PetriNetUnfolder]: 245/3671 cut-off events. [2021-08-13 12:52:21,993 INFO L130 PetriNetUnfolder]: For 814073/920486 co-relation queries the response was YES. [2021-08-13 12:52:22,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73218 conditions, 3671 events. 245/3671 cut-off events. For 814073/920486 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 54462 event pairs, 0 based on Foata normal form. 184/3739 useless extension candidates. Maximal degree in co-relation 58256. Up to 752 conditions per place. [2021-08-13 12:52:22,055 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 787 selfloop transitions, 253 changer transitions 130/1190 dead transitions. [2021-08-13 12:52:22,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 1190 transitions, 135818 flow [2021-08-13 12:52:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:22,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:22,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:22,057 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:22,057 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:22,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:22,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:22,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:22,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:22,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:22,058 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:22,058 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 407 predicate places. [2021-08-13 12:52:22,058 INFO L482 AbstractCegarLoop]: Abstraction has has 451 places, 1190 transitions, 135818 flow [2021-08-13 12:52:22,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:22,058 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:22,058 INFO L266 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] [2021-08-13 12:52:22,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-13 12:52:22,059 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:22,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:22,059 INFO L82 PathProgramCache]: Analyzing trace with hash 171400321, now seen corresponding path program 58 times [2021-08-13 12:52:22,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:22,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049763452] [2021-08-13 12:52:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:22,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:22,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:22,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:22,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:22,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:22,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:22,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:22,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:22,140 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:22,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:22,153 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:22,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:22,185 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:22,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:22,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:22,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049763452] [2021-08-13 12:52:22,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049763452] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:22,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:22,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:22,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063598586] [2021-08-13 12:52:22,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:22,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:22,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:22,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:22,208 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:22,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 1190 transitions, 135818 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:22,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:22,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:22,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:24,634 INFO L129 PetriNetUnfolder]: 244/3716 cut-off events. [2021-08-13 12:52:24,634 INFO L130 PetriNetUnfolder]: For 852484/962887 co-relation queries the response was YES. [2021-08-13 12:52:24,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75055 conditions, 3716 events. 244/3716 cut-off events. For 852484/962887 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55403 event pairs, 0 based on Foata normal form. 184/3784 useless extension candidates. Maximal degree in co-relation 59600. Up to 758 conditions per place. [2021-08-13 12:52:24,811 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 798 selfloop transitions, 250 changer transitions 132/1200 dead transitions. [2021-08-13 12:52:24,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1200 transitions, 139338 flow [2021-08-13 12:52:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:24,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:24,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:24,812 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:24,812 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:24,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:24,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:24,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:24,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:24,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:24,813 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:24,814 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 414 predicate places. [2021-08-13 12:52:24,814 INFO L482 AbstractCegarLoop]: Abstraction has has 458 places, 1200 transitions, 139338 flow [2021-08-13 12:52:24,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:24,814 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:24,818 INFO L266 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] [2021-08-13 12:52:24,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-13 12:52:24,818 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:24,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:24,818 INFO L82 PathProgramCache]: Analyzing trace with hash 2104679181, now seen corresponding path program 59 times [2021-08-13 12:52:24,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:24,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949091540] [2021-08-13 12:52:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:24,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:24,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:24,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:24,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:24,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:24,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:24,877 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:24,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:24,892 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:52:24,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:52:24,913 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:52:24,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:52:24,946 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:24,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:24,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:24,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:24,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949091540] [2021-08-13 12:52:24,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949091540] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:24,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:24,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:24,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668577092] [2021-08-13 12:52:24,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:24,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:24,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:24,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:24,974 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:24,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 1200 transitions, 139338 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:24,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:24,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:24,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:27,090 INFO L129 PetriNetUnfolder]: 244/3718 cut-off events. [2021-08-13 12:52:27,090 INFO L130 PetriNetUnfolder]: For 994348/1150427 co-relation queries the response was YES. [2021-08-13 12:52:27,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76184 conditions, 3718 events. 244/3718 cut-off events. For 994348/1150427 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55410 event pairs, 0 based on Foata normal form. 214/3816 useless extension candidates. Maximal degree in co-relation 60543. Up to 757 conditions per place. [2021-08-13 12:52:27,140 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 796 selfloop transitions, 246 changer transitions 137/1199 dead transitions. [2021-08-13 12:52:27,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 1199 transitions, 141578 flow [2021-08-13 12:52:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:27,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:27,141 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:27,141 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:27,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:27,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:27,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:27,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:27,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:27,155 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:27,155 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 421 predicate places. [2021-08-13 12:52:27,155 INFO L482 AbstractCegarLoop]: Abstraction has has 465 places, 1199 transitions, 141578 flow [2021-08-13 12:52:27,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:27,155 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:27,155 INFO L266 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] [2021-08-13 12:52:27,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-13 12:52:27,155 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:27,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:27,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1475531183, now seen corresponding path program 60 times [2021-08-13 12:52:27,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:27,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219965162] [2021-08-13 12:52:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:27,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:27,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:27,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:27,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:27,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:27,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:27,180 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:27,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:27,193 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:52:27,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:52:27,212 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:27,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:27,231 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:27,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:27,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:27,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219965162] [2021-08-13 12:52:27,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219965162] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:27,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:27,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:27,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103457972] [2021-08-13 12:52:27,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:27,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:27,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:27,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:27,252 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:27,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 1199 transitions, 141578 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:27,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:27,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:27,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:29,447 INFO L129 PetriNetUnfolder]: 244/3718 cut-off events. [2021-08-13 12:52:29,448 INFO L130 PetriNetUnfolder]: For 1114649/1303207 co-relation queries the response was YES. [2021-08-13 12:52:29,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77307 conditions, 3718 events. 244/3718 cut-off events. For 1114649/1303207 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55367 event pairs, 0 based on Foata normal form. 235/3834 useless extension candidates. Maximal degree in co-relation 61482. Up to 756 conditions per place. [2021-08-13 12:52:29,506 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 793 selfloop transitions, 246 changer transitions 139/1198 dead transitions. [2021-08-13 12:52:29,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 1198 transitions, 143814 flow [2021-08-13 12:52:29,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:29,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:29,507 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:29,507 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:29,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:29,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:29,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:29,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:29,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:29,510 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:29,510 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 428 predicate places. [2021-08-13 12:52:29,510 INFO L482 AbstractCegarLoop]: Abstraction has has 472 places, 1198 transitions, 143814 flow [2021-08-13 12:52:29,510 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:29,510 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:29,510 INFO L266 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] [2021-08-13 12:52:29,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-13 12:52:29,511 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:29,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:29,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1649531573, now seen corresponding path program 61 times [2021-08-13 12:52:29,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:29,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922261601] [2021-08-13 12:52:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:29,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:29,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:29,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:29,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:29,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:29,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:29,565 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:29,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:29,582 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:29,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:29,610 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:29,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:29,628 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:29,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:29,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:29,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922261601] [2021-08-13 12:52:29,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922261601] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:29,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:29,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:29,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889704529] [2021-08-13 12:52:29,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:29,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:29,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:29,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:29,647 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:29,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 1198 transitions, 143814 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:29,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:29,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:29,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:31,737 INFO L129 PetriNetUnfolder]: 244/3717 cut-off events. [2021-08-13 12:52:31,737 INFO L130 PetriNetUnfolder]: For 867760/965999 co-relation queries the response was YES. [2021-08-13 12:52:31,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78424 conditions, 3717 events. 244/3717 cut-off events. For 867760/965999 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55391 event pairs, 0 based on Foata normal form. 128/3726 useless extension candidates. Maximal degree in co-relation 62417. Up to 755 conditions per place. [2021-08-13 12:52:31,788 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 783 selfloop transitions, 255 changer transitions 139/1197 dead transitions. [2021-08-13 12:52:31,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 1197 transitions, 146046 flow [2021-08-13 12:52:31,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:31,789 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:31,789 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:31,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:31,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:31,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:31,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:31,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:31,790 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:31,790 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 435 predicate places. [2021-08-13 12:52:31,791 INFO L482 AbstractCegarLoop]: Abstraction has has 479 places, 1197 transitions, 146046 flow [2021-08-13 12:52:31,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:31,791 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:31,791 INFO L266 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] [2021-08-13 12:52:31,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-08-13 12:52:31,791 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:31,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:31,792 INFO L82 PathProgramCache]: Analyzing trace with hash 468627889, now seen corresponding path program 62 times [2021-08-13 12:52:31,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:31,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996916444] [2021-08-13 12:52:31,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:31,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:31,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:31,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:31,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:31,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:31,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:31,813 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:31,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:31,821 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:31,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:31,832 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:31,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:31,851 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:31,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:31,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:31,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996916444] [2021-08-13 12:52:31,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996916444] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:31,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:31,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:31,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611807784] [2021-08-13 12:52:31,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:31,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:31,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:31,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:31,885 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:31,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 1197 transitions, 146046 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:31,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:31,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:31,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:33,895 INFO L129 PetriNetUnfolder]: 244/3716 cut-off events. [2021-08-13 12:52:33,895 INFO L130 PetriNetUnfolder]: For 823219/906097 co-relation queries the response was YES. [2021-08-13 12:52:33,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79539 conditions, 3716 events. 244/3716 cut-off events. For 823219/906097 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55325 event pairs, 0 based on Foata normal form. 111/3708 useless extension candidates. Maximal degree in co-relation 63352. Up to 754 conditions per place. [2021-08-13 12:52:33,947 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 782 selfloop transitions, 255 changer transitions 139/1196 dead transitions. [2021-08-13 12:52:33,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 1196 transitions, 148274 flow [2021-08-13 12:52:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:33,948 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:33,948 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:33,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:33,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:33,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:33,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:33,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:33,949 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:33,949 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 442 predicate places. [2021-08-13 12:52:33,949 INFO L482 AbstractCegarLoop]: Abstraction has has 486 places, 1196 transitions, 148274 flow [2021-08-13 12:52:33,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:33,949 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:33,949 INFO L266 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] [2021-08-13 12:52:33,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-08-13 12:52:33,949 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:33,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:33,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1756983537, now seen corresponding path program 63 times [2021-08-13 12:52:33,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:33,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424981951] [2021-08-13 12:52:33,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:33,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:33,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:33,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:33,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:33,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:33,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:33,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:33,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:33,985 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:52:33,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:52:34,004 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:52:34,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:52:34,031 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:34,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:34,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:34,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424981951] [2021-08-13 12:52:34,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424981951] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:34,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:34,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:34,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900608758] [2021-08-13 12:52:34,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:34,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:34,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:34,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:34,047 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:34,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1196 transitions, 148274 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:34,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:34,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:34,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:36,191 INFO L129 PetriNetUnfolder]: 244/3713 cut-off events. [2021-08-13 12:52:36,191 INFO L130 PetriNetUnfolder]: For 927486/1032097 co-relation queries the response was YES. [2021-08-13 12:52:36,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80646 conditions, 3713 events. 244/3713 cut-off events. For 927486/1032097 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55312 event pairs, 0 based on Foata normal form. 128/3724 useless extension candidates. Maximal degree in co-relation 64281. Up to 753 conditions per place. [2021-08-13 12:52:36,242 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 777 selfloop transitions, 243 changer transitions 155/1195 dead transitions. [2021-08-13 12:52:36,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1195 transitions, 150498 flow [2021-08-13 12:52:36,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:36,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:36,243 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:36,243 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:36,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:36,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:36,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:36,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:36,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:36,245 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:36,245 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 449 predicate places. [2021-08-13 12:52:36,245 INFO L482 AbstractCegarLoop]: Abstraction has has 493 places, 1195 transitions, 150498 flow [2021-08-13 12:52:36,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:36,245 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:36,245 INFO L266 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] [2021-08-13 12:52:36,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-08-13 12:52:36,245 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:36,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:36,245 INFO L82 PathProgramCache]: Analyzing trace with hash -937552063, now seen corresponding path program 64 times [2021-08-13 12:52:36,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:36,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440617729] [2021-08-13 12:52:36,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:36,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:36,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:36,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:36,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:36,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:36,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:36,267 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:36,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:36,294 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:52:36,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:52:36,324 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:36,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:36,340 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:36,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:36,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:36,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440617729] [2021-08-13 12:52:36,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440617729] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:36,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:36,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:36,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251223459] [2021-08-13 12:52:36,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:36,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:36,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:36,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:36,362 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:36,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1195 transitions, 150498 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:36,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:36,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:36,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:38,467 INFO L129 PetriNetUnfolder]: 244/3716 cut-off events. [2021-08-13 12:52:38,468 INFO L130 PetriNetUnfolder]: For 889785/978407 co-relation queries the response was YES. [2021-08-13 12:52:38,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81767 conditions, 3716 events. 244/3716 cut-off events. For 889785/978407 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55403 event pairs, 0 based on Foata normal form. 113/3711 useless extension candidates. Maximal degree in co-relation 65226. Up to 752 conditions per place. [2021-08-13 12:52:38,522 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 775 selfloop transitions, 242 changer transitions 157/1194 dead transitions. [2021-08-13 12:52:38,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1194 transitions, 152718 flow [2021-08-13 12:52:38,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:38,523 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:38,523 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:38,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:38,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:38,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:38,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:38,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:38,524 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:38,524 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 456 predicate places. [2021-08-13 12:52:38,524 INFO L482 AbstractCegarLoop]: Abstraction has has 500 places, 1194 transitions, 152718 flow [2021-08-13 12:52:38,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:38,525 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:38,525 INFO L266 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] [2021-08-13 12:52:38,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-08-13 12:52:38,525 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:38,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:38,525 INFO L82 PathProgramCache]: Analyzing trace with hash 631145331, now seen corresponding path program 65 times [2021-08-13 12:52:38,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:38,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115951382] [2021-08-13 12:52:38,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:38,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:38,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:38,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:38,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:38,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:38,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:38,553 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:38,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:38,580 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:52:38,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:52:38,595 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:38,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:38,614 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:38,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:38,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:38,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115951382] [2021-08-13 12:52:38,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115951382] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:38,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:38,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:38,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067168014] [2021-08-13 12:52:38,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:38,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:38,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:38,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:38,633 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:38,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1194 transitions, 152718 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:38,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:38,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:38,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:40,725 INFO L129 PetriNetUnfolder]: 244/3710 cut-off events. [2021-08-13 12:52:40,725 INFO L130 PetriNetUnfolder]: For 1325777/1545569 co-relation queries the response was YES. [2021-08-13 12:52:40,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82863 conditions, 3710 events. 244/3710 cut-off events. For 1325777/1545569 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55258 event pairs, 0 based on Foata normal form. 223/3816 useless extension candidates. Maximal degree in co-relation 66148. Up to 751 conditions per place. [2021-08-13 12:52:40,781 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 767 selfloop transitions, 249 changer transitions 157/1193 dead transitions. [2021-08-13 12:52:40,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1193 transitions, 154934 flow [2021-08-13 12:52:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:40,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:40,782 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:40,782 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:40,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:40,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:40,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:40,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:40,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:40,783 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:40,783 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 463 predicate places. [2021-08-13 12:52:40,783 INFO L482 AbstractCegarLoop]: Abstraction has has 507 places, 1193 transitions, 154934 flow [2021-08-13 12:52:40,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:40,783 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:40,783 INFO L266 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] [2021-08-13 12:52:40,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-08-13 12:52:40,784 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:40,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:40,784 INFO L82 PathProgramCache]: Analyzing trace with hash -91405923, now seen corresponding path program 66 times [2021-08-13 12:52:40,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:40,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169884524] [2021-08-13 12:52:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:40,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:40,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:40,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:40,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:40,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:40,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:40,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:40,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:40,816 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:52:40,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:52:40,829 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:52:40,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:52:40,848 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:40,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:40,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:40,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169884524] [2021-08-13 12:52:40,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169884524] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:40,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:40,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:40,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963521308] [2021-08-13 12:52:40,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:40,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:40,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:40,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:40,867 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:40,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 1193 transitions, 154934 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:40,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:40,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:40,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:43,242 INFO L129 PetriNetUnfolder]: 244/3710 cut-off events. [2021-08-13 12:52:43,242 INFO L130 PetriNetUnfolder]: For 936036/1028610 co-relation queries the response was YES. [2021-08-13 12:52:43,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83973 conditions, 3710 events. 244/3710 cut-off events. For 936036/1028610 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55270 event pairs, 0 based on Foata normal form. 107/3700 useless extension candidates. Maximal degree in co-relation 67086. Up to 750 conditions per place. [2021-08-13 12:52:43,296 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 766 selfloop transitions, 244 changer transitions 162/1192 dead transitions. [2021-08-13 12:52:43,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 1192 transitions, 157146 flow [2021-08-13 12:52:43,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:43,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:43,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:43,297 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:43,298 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:43,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:43,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:43,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:43,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:43,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:43,299 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:43,299 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 470 predicate places. [2021-08-13 12:52:43,299 INFO L482 AbstractCegarLoop]: Abstraction has has 514 places, 1192 transitions, 157146 flow [2021-08-13 12:52:43,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:43,299 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:43,299 INFO L266 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] [2021-08-13 12:52:43,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-08-13 12:52:43,299 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:43,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:43,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1405503585, now seen corresponding path program 67 times [2021-08-13 12:52:43,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:43,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559348974] [2021-08-13 12:52:43,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:43,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:43,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:43,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:43,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:43,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:43,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:43,317 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:43,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:43,332 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:52:43,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:52:43,352 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:52:43,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:52:43,371 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:43,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:43,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:43,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559348974] [2021-08-13 12:52:43,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559348974] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:43,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:43,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:43,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169191809] [2021-08-13 12:52:43,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:43,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:43,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:43,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:43,391 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:43,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 1192 transitions, 157146 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:43,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:43,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:43,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:45,821 INFO L129 PetriNetUnfolder]: 244/3706 cut-off events. [2021-08-13 12:52:45,821 INFO L130 PetriNetUnfolder]: For 1141664/1286934 co-relation queries the response was YES. [2021-08-13 12:52:45,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85069 conditions, 3706 events. 244/3706 cut-off events. For 1141664/1286934 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55170 event pairs, 0 based on Foata normal form. 170/3760 useless extension candidates. Maximal degree in co-relation 68012. Up to 749 conditions per place. [2021-08-13 12:52:45,886 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 767 selfloop transitions, 239 changer transitions 165/1191 dead transitions. [2021-08-13 12:52:45,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 1191 transitions, 159354 flow [2021-08-13 12:52:45,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:45,887 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:45,887 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:45,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:45,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:45,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:45,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:45,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:45,888 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:45,888 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 477 predicate places. [2021-08-13 12:52:45,888 INFO L482 AbstractCegarLoop]: Abstraction has has 521 places, 1191 transitions, 159354 flow [2021-08-13 12:52:45,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:45,889 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:45,889 INFO L266 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] [2021-08-13 12:52:45,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-08-13 12:52:45,889 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:45,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:45,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1200613371, now seen corresponding path program 68 times [2021-08-13 12:52:45,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:45,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500651532] [2021-08-13 12:52:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:45,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:45,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:45,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:45,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:45,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:45,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:45,909 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:45,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:45,925 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 12:52:45,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:45,948 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:45,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:45,966 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:45,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:45,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:45,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500651532] [2021-08-13 12:52:45,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500651532] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:45,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:45,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:45,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833233678] [2021-08-13 12:52:45,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:45,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:45,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:45,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:45,984 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:45,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 1191 transitions, 159354 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:45,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:45,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:45,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:48,288 INFO L129 PetriNetUnfolder]: 244/3705 cut-off events. [2021-08-13 12:52:48,288 INFO L130 PetriNetUnfolder]: For 1343792/1544167 co-relation queries the response was YES. [2021-08-13 12:52:48,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86172 conditions, 3705 events. 244/3705 cut-off events. For 1343792/1544167 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55141 event pairs, 0 based on Foata normal form. 202/3791 useless extension candidates. Maximal degree in co-relation 68947. Up to 748 conditions per place. [2021-08-13 12:52:48,340 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 764 selfloop transitions, 239 changer transitions 167/1190 dead transitions. [2021-08-13 12:52:48,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 1190 transitions, 161558 flow [2021-08-13 12:52:48,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:48,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:48,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:48,341 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:48,341 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:48,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:48,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:48,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:48,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:48,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:48,342 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:48,343 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 484 predicate places. [2021-08-13 12:52:48,343 INFO L482 AbstractCegarLoop]: Abstraction has has 528 places, 1190 transitions, 161558 flow [2021-08-13 12:52:48,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:48,343 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:48,343 INFO L266 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] [2021-08-13 12:52:48,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-08-13 12:52:48,343 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:48,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:48,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1778700025, now seen corresponding path program 69 times [2021-08-13 12:52:48,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:48,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802310901] [2021-08-13 12:52:48,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:48,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:48,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:48,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:48,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:48,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:48,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:48,360 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:48,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:48,375 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 12:52:48,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:48,473 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:48,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:48,491 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:48,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:48,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:48,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802310901] [2021-08-13 12:52:48,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802310901] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:48,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:48,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:48,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157174698] [2021-08-13 12:52:48,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:48,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:48,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:48,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:48,508 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:48,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 1190 transitions, 161558 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:48,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:48,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:48,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:50,839 INFO L129 PetriNetUnfolder]: 244/3707 cut-off events. [2021-08-13 12:52:50,839 INFO L130 PetriNetUnfolder]: For 1119420/1243101 co-relation queries the response was YES. [2021-08-13 12:52:50,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87282 conditions, 3707 events. 244/3707 cut-off events. For 1119420/1243101 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55226 event pairs, 0 based on Foata normal form. 122/3712 useless extension candidates. Maximal degree in co-relation 69891. Up to 747 conditions per place. [2021-08-13 12:52:50,906 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 761 selfloop transitions, 237 changer transitions 171/1189 dead transitions. [2021-08-13 12:52:50,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 1189 transitions, 163758 flow [2021-08-13 12:52:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:50,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:50,907 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:50,908 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:50,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:50,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:50,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:50,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:50,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:50,909 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:50,909 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 491 predicate places. [2021-08-13 12:52:50,909 INFO L482 AbstractCegarLoop]: Abstraction has has 535 places, 1189 transitions, 163758 flow [2021-08-13 12:52:50,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:50,909 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:50,909 INFO L266 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] [2021-08-13 12:52:50,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-08-13 12:52:50,909 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:50,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:50,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1220282421, now seen corresponding path program 70 times [2021-08-13 12:52:50,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:50,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840813568] [2021-08-13 12:52:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:50,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:50,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:50,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:50,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:50,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:50,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:50,929 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:50,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:50,944 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:50,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:50,957 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:50,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:50,975 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:50,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:50,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:50,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840813568] [2021-08-13 12:52:50,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840813568] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:50,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:50,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:50,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955799078] [2021-08-13 12:52:50,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:50,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:50,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:50,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:50,993 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:50,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 1189 transitions, 163758 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:50,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:50,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:50,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:53,473 INFO L129 PetriNetUnfolder]: 244/3706 cut-off events. [2021-08-13 12:52:53,473 INFO L130 PetriNetUnfolder]: For 1054267/1156569 co-relation queries the response was YES. [2021-08-13 12:52:53,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88380 conditions, 3706 events. 244/3706 cut-off events. For 1054267/1156569 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55226 event pairs, 0 based on Foata normal form. 107/3697 useless extension candidates. Maximal degree in co-relation 70825. Up to 746 conditions per place. [2021-08-13 12:52:53,529 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 767 selfloop transitions, 227 changer transitions 174/1188 dead transitions. [2021-08-13 12:52:53,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 1188 transitions, 165954 flow [2021-08-13 12:52:53,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:53,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:53,530 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:53,530 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:53,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:53,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:53,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:53,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:53,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:53,531 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:53,532 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 498 predicate places. [2021-08-13 12:52:53,532 INFO L482 AbstractCegarLoop]: Abstraction has has 542 places, 1188 transitions, 165954 flow [2021-08-13 12:52:53,532 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:53,532 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:53,532 INFO L266 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] [2021-08-13 12:52:53,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-08-13 12:52:53,532 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:53,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:53,532 INFO L82 PathProgramCache]: Analyzing trace with hash 154264053, now seen corresponding path program 71 times [2021-08-13 12:52:53,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:53,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866587212] [2021-08-13 12:52:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:53,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:53,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:53,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:53,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:53,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:53,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:53,550 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:53,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:53,564 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:52:53,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:52:53,583 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:52:53,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:52:53,602 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:53,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:53,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:53,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866587212] [2021-08-13 12:52:53,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866587212] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:53,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:53,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:53,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079867201] [2021-08-13 12:52:53,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:53,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:53,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:53,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:53,623 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:53,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 1188 transitions, 165954 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:53,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:53,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:53,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:56,317 INFO L129 PetriNetUnfolder]: 244/3709 cut-off events. [2021-08-13 12:52:56,317 INFO L130 PetriNetUnfolder]: For 1084942/1189676 co-relation queries the response was YES. [2021-08-13 12:52:56,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89488 conditions, 3709 events. 244/3709 cut-off events. For 1084942/1189676 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 55279 event pairs, 0 based on Foata normal form. 107/3698 useless extension candidates. Maximal degree in co-relation 71771. Up to 745 conditions per place. [2021-08-13 12:52:56,376 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 760 selfloop transitions, 229 changer transitions 178/1187 dead transitions. [2021-08-13 12:52:56,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 1187 transitions, 168146 flow [2021-08-13 12:52:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:56,377 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:56,377 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:56,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:56,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:56,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:56,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:56,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:56,378 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:56,378 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 505 predicate places. [2021-08-13 12:52:56,378 INFO L482 AbstractCegarLoop]: Abstraction has has 549 places, 1187 transitions, 168146 flow [2021-08-13 12:52:56,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:56,378 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:56,379 INFO L266 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] [2021-08-13 12:52:56,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-08-13 12:52:56,379 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:56,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:56,379 INFO L82 PathProgramCache]: Analyzing trace with hash -909918889, now seen corresponding path program 72 times [2021-08-13 12:52:56,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:56,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12761459] [2021-08-13 12:52:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:56,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:56,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:56,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:56,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:56,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:56,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:56,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:56,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:56,406 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:56,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:56,418 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:56,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:56,438 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:56,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:56,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:56,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12761459] [2021-08-13 12:52:56,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12761459] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:56,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:56,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:56,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81428152] [2021-08-13 12:52:56,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:56,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:56,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:56,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:56,458 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:56,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 1187 transitions, 168146 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:56,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:56,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:56,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:59,016 INFO L129 PetriNetUnfolder]: 245/3925 cut-off events. [2021-08-13 12:52:59,016 INFO L130 PetriNetUnfolder]: For 1711512/1975166 co-relation queries the response was YES. [2021-08-13 12:52:59,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95091 conditions, 3925 events. 245/3925 cut-off events. For 1711512/1975166 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 59349 event pairs, 0 based on Foata normal form. 223/4029 useless extension candidates. Maximal degree in co-relation 75618. Up to 780 conditions per place. [2021-08-13 12:52:59,071 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 800 selfloop transitions, 245 changer transitions 178/1243 dead transitions. [2021-08-13 12:52:59,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 1243 transitions, 178656 flow [2021-08-13 12:52:59,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:52:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:52:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:52:59,072 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:52:59,072 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:52:59,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:52:59,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:59,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:52:59,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:59,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:59,073 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:59,073 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 512 predicate places. [2021-08-13 12:52:59,073 INFO L482 AbstractCegarLoop]: Abstraction has has 556 places, 1243 transitions, 178656 flow [2021-08-13 12:52:59,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:59,073 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:59,073 INFO L266 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] [2021-08-13 12:52:59,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-08-13 12:52:59,073 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:59,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:59,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1105884209, now seen corresponding path program 73 times [2021-08-13 12:52:59,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:59,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091391949] [2021-08-13 12:52:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:59,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:59,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:59,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:59,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:59,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:59,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:59,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:59,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:59,098 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:59,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:59,110 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:52:59,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:52:59,127 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:52:59,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:52:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:59,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:59,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091391949] [2021-08-13 12:52:59,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091391949] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:59,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:59,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:52:59,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554313090] [2021-08-13 12:52:59,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:52:59,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:59,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:52:59,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:52:59,146 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:52:59,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 1243 transitions, 178656 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:59,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:59,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:52:59,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:02,026 INFO L129 PetriNetUnfolder]: 245/3928 cut-off events. [2021-08-13 12:53:02,026 INFO L130 PetriNetUnfolder]: For 1200411/1309997 co-relation queries the response was YES. [2021-08-13 12:53:02,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96251 conditions, 3928 events. 245/3928 cut-off events. For 1200411/1309997 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 59441 event pairs, 0 based on Foata normal form. 105/3913 useless extension candidates. Maximal degree in co-relation 76599. Up to 779 conditions per place. [2021-08-13 12:53:02,085 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 804 selfloop transitions, 238 changer transitions 180/1242 dead transitions. [2021-08-13 12:53:02,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 1242 transitions, 180954 flow [2021-08-13 12:53:02,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:02,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:02,086 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:02,086 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:02,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:02,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:02,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:02,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:02,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:02,087 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:02,087 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 519 predicate places. [2021-08-13 12:53:02,087 INFO L482 AbstractCegarLoop]: Abstraction has has 563 places, 1242 transitions, 180954 flow [2021-08-13 12:53:02,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:02,088 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:02,088 INFO L266 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] [2021-08-13 12:53:02,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-08-13 12:53:02,088 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:02,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:02,088 INFO L82 PathProgramCache]: Analyzing trace with hash -535699647, now seen corresponding path program 74 times [2021-08-13 12:53:02,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:02,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361580813] [2021-08-13 12:53:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:02,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:02,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:02,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:02,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:02,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:02,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:02,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:02,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:53:02,112 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:53:02,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:53:02,123 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:02,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:02,141 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:02,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:02,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:02,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361580813] [2021-08-13 12:53:02,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361580813] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:02,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:02,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:02,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827336182] [2021-08-13 12:53:02,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:02,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:02,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:02,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:02,159 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:02,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 1242 transitions, 180954 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:02,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:02,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:02,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:03,103 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-08-13 12:53:04,909 INFO L129 PetriNetUnfolder]: 245/3927 cut-off events. [2021-08-13 12:53:04,909 INFO L130 PetriNetUnfolder]: For 1233839/1345857 co-relation queries the response was YES. [2021-08-13 12:53:04,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97399 conditions, 3927 events. 245/3927 cut-off events. For 1233839/1345857 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 59395 event pairs, 0 based on Foata normal form. 105/3912 useless extension candidates. Maximal degree in co-relation 77570. Up to 778 conditions per place. [2021-08-13 12:53:04,965 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 797 selfloop transitions, 239 changer transitions 185/1241 dead transitions. [2021-08-13 12:53:04,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 1241 transitions, 183248 flow [2021-08-13 12:53:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:04,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:04,966 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:04,966 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:04,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:04,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:04,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:04,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:04,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:04,967 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:04,967 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 526 predicate places. [2021-08-13 12:53:04,968 INFO L482 AbstractCegarLoop]: Abstraction has has 570 places, 1241 transitions, 183248 flow [2021-08-13 12:53:04,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:04,968 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:04,968 INFO L266 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] [2021-08-13 12:53:04,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-08-13 12:53:04,968 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:04,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:04,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1358796725, now seen corresponding path program 75 times [2021-08-13 12:53:04,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:04,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479160490] [2021-08-13 12:53:04,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:04,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:04,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:04,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:04,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:04,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:04,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:04,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:04,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:53:04,992 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 12:53:04,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:53:05,013 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:05,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:05,030 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:05,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:05,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:05,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479160490] [2021-08-13 12:53:05,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479160490] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:05,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:05,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:05,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405932553] [2021-08-13 12:53:05,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:05,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:05,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:05,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:05,049 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:05,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 1241 transitions, 183248 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:05,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:05,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:05,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:07,872 INFO L129 PetriNetUnfolder]: 245/3924 cut-off events. [2021-08-13 12:53:07,872 INFO L130 PetriNetUnfolder]: For 1870969/2153421 co-relation queries the response was YES. [2021-08-13 12:53:07,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98541 conditions, 3924 events. 245/3924 cut-off events. For 1870969/2153421 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 59377 event pairs, 0 based on Foata normal form. 223/4026 useless extension candidates. Maximal degree in co-relation 78537. Up to 777 conditions per place. [2021-08-13 12:53:07,936 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 793 selfloop transitions, 240 changer transitions 187/1240 dead transitions. [2021-08-13 12:53:07,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1240 transitions, 185538 flow [2021-08-13 12:53:07,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:07,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:07,937 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:07,937 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:07,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:07,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:07,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:07,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:07,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:07,938 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:07,938 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 533 predicate places. [2021-08-13 12:53:07,938 INFO L482 AbstractCegarLoop]: Abstraction has has 577 places, 1240 transitions, 185538 flow [2021-08-13 12:53:07,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:07,938 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:07,938 INFO L266 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] [2021-08-13 12:53:07,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-08-13 12:53:07,938 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:07,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:07,938 INFO L82 PathProgramCache]: Analyzing trace with hash -510631087, now seen corresponding path program 76 times [2021-08-13 12:53:07,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:07,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815988191] [2021-08-13 12:53:07,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:07,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:07,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:07,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:07,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:07,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:07,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:07,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:07,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:53:07,969 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 12:53:07,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:53:07,995 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:07,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:08,015 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:08,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:08,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:08,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815988191] [2021-08-13 12:53:08,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815988191] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:08,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:08,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:08,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106350851] [2021-08-13 12:53:08,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:08,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:08,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:08,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:08,034 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:08,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 1240 transitions, 185538 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:08,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:08,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:08,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:11,017 INFO L129 PetriNetUnfolder]: 245/3923 cut-off events. [2021-08-13 12:53:11,019 INFO L130 PetriNetUnfolder]: For 1304882/1421776 co-relation queries the response was YES. [2021-08-13 12:53:11,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99683 conditions, 3923 events. 245/3923 cut-off events. For 1304882/1421776 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 59327 event pairs, 0 based on Foata normal form. 107/3912 useless extension candidates. Maximal degree in co-relation 79506. Up to 776 conditions per place. [2021-08-13 12:53:11,079 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 793 selfloop transitions, 236 changer transitions 190/1239 dead transitions. [2021-08-13 12:53:11,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 1239 transitions, 187824 flow [2021-08-13 12:53:11,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:11,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:11,080 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:11,080 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:11,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:11,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:11,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:11,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:11,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:11,081 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:11,081 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 540 predicate places. [2021-08-13 12:53:11,081 INFO L482 AbstractCegarLoop]: Abstraction has has 584 places, 1239 transitions, 187824 flow [2021-08-13 12:53:11,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:11,081 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:11,082 INFO L266 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] [2021-08-13 12:53:11,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-08-13 12:53:11,082 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:11,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:11,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1105644287, now seen corresponding path program 77 times [2021-08-13 12:53:11,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:11,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630109248] [2021-08-13 12:53:11,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:11,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:11,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:11,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:11,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:11,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:11,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:11,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:11,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:53:11,117 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:53:11,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:53:11,129 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:11,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:11,147 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:11,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:11,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:11,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630109248] [2021-08-13 12:53:11,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630109248] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:11,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:11,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:11,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693663891] [2021-08-13 12:53:11,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:11,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:11,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:11,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:11,166 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:11,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 1239 transitions, 187824 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:11,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:11,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:11,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:13,973 INFO L129 PetriNetUnfolder]: 245/3921 cut-off events. [2021-08-13 12:53:13,973 INFO L130 PetriNetUnfolder]: For 1339720/1459046 co-relation queries the response was YES. [2021-08-13 12:53:14,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100823 conditions, 3921 events. 245/3921 cut-off events. For 1339720/1459046 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 59240 event pairs, 0 based on Foata normal form. 107/3910 useless extension candidates. Maximal degree in co-relation 80475. Up to 775 conditions per place. [2021-08-13 12:53:14,030 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 794 selfloop transitions, 229 changer transitions 195/1238 dead transitions. [2021-08-13 12:53:14,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 1238 transitions, 190106 flow [2021-08-13 12:53:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:14,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:14,031 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:14,031 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:14,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:14,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:14,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:14,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:14,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:14,032 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:14,033 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 547 predicate places. [2021-08-13 12:53:14,033 INFO L482 AbstractCegarLoop]: Abstraction has has 591 places, 1238 transitions, 190106 flow [2021-08-13 12:53:14,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:14,033 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:14,033 INFO L266 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] [2021-08-13 12:53:14,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-08-13 12:53:14,033 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:14,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:14,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1684125983, now seen corresponding path program 78 times [2021-08-13 12:53:14,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:14,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050157555] [2021-08-13 12:53:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:14,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:14,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:14,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:14,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:14,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:14,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:14,071 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:53:14,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:53:14,079 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:53:14,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:53:14,091 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:14,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:14,108 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:14,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:14,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:14,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050157555] [2021-08-13 12:53:14,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050157555] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:14,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:14,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:14,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883380062] [2021-08-13 12:53:14,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:14,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:14,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:14,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:14,126 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:14,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 1238 transitions, 190106 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:14,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:14,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:14,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:17,015 INFO L129 PetriNetUnfolder]: 245/4106 cut-off events. [2021-08-13 12:53:17,015 INFO L130 PetriNetUnfolder]: For 1560305/1712660 co-relation queries the response was YES. [2021-08-13 12:53:17,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106134 conditions, 4106 events. 245/4106 cut-off events. For 1560305/1712660 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62829 event pairs, 0 based on Foata normal form. 88/4071 useless extension candidates. Maximal degree in co-relation 84141. Up to 805 conditions per place. [2021-08-13 12:53:17,074 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 812 selfloop transitions, 257 changer transitions 197/1286 dead transitions. [2021-08-13 12:53:17,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 1286 transitions, 200126 flow [2021-08-13 12:53:17,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:17,075 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:17,075 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:17,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:17,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:17,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:17,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:17,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:17,076 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:17,076 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 554 predicate places. [2021-08-13 12:53:17,076 INFO L482 AbstractCegarLoop]: Abstraction has has 598 places, 1286 transitions, 200126 flow [2021-08-13 12:53:17,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:17,077 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:17,077 INFO L266 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] [2021-08-13 12:53:17,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-08-13 12:53:17,077 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:17,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:17,077 INFO L82 PathProgramCache]: Analyzing trace with hash 211070585, now seen corresponding path program 79 times [2021-08-13 12:53:17,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:17,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637699792] [2021-08-13 12:53:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:17,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:17,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:17,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:17,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:17,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:17,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:17,093 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:53:17,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:53:17,101 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:53:17,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:53:17,113 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:17,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:17,130 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:17,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:17,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:17,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:17,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637699792] [2021-08-13 12:53:17,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637699792] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:17,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:17,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:17,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359291216] [2021-08-13 12:53:17,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:17,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:17,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:17,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:17,149 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:17,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 1286 transitions, 200126 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:17,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:17,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:17,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:20,163 INFO L129 PetriNetUnfolder]: 245/4105 cut-off events. [2021-08-13 12:53:20,163 INFO L130 PetriNetUnfolder]: For 1739213/1931681 co-relation queries the response was YES. [2021-08-13 12:53:20,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107321 conditions, 4105 events. 245/4105 cut-off events. For 1739213/1931681 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62722 event pairs, 0 based on Foata normal form. 92/4074 useless extension candidates. Maximal degree in co-relation 85143. Up to 804 conditions per place. [2021-08-13 12:53:20,329 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 810 selfloop transitions, 255 changer transitions 200/1285 dead transitions. [2021-08-13 12:53:20,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 1285 transitions, 202498 flow [2021-08-13 12:53:20,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:20,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:20,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:20,330 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:20,330 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:20,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:20,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:20,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:20,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:20,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:20,331 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:20,331 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 561 predicate places. [2021-08-13 12:53:20,331 INFO L482 AbstractCegarLoop]: Abstraction has has 605 places, 1285 transitions, 202498 flow [2021-08-13 12:53:20,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:20,331 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:20,331 INFO L266 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] [2021-08-13 12:53:20,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-08-13 12:53:20,332 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:20,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:20,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1833330625, now seen corresponding path program 80 times [2021-08-13 12:53:20,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:20,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208404440] [2021-08-13 12:53:20,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:20,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:20,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:20,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:20,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:20,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:20,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:20,349 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:53:20,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:53:20,365 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:53:20,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:53:20,378 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:20,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:20,395 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:20,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:20,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:20,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208404440] [2021-08-13 12:53:20,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208404440] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:20,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:20,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:20,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800468588] [2021-08-13 12:53:20,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:20,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:20,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:20,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:20,415 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:20,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 1285 transitions, 202498 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:20,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:20,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:20,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:23,759 INFO L129 PetriNetUnfolder]: 245/4104 cut-off events. [2021-08-13 12:53:23,760 INFO L130 PetriNetUnfolder]: For 1907356/2135464 co-relation queries the response was YES. [2021-08-13 12:53:23,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108506 conditions, 4104 events. 245/4104 cut-off events. For 1907356/2135464 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62706 event pairs, 0 based on Foata normal form. 105/4086 useless extension candidates. Maximal degree in co-relation 86145. Up to 803 conditions per place. [2021-08-13 12:53:23,826 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 799 selfloop transitions, 263 changer transitions 202/1284 dead transitions. [2021-08-13 12:53:23,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 1284 transitions, 204866 flow [2021-08-13 12:53:23,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:23,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:23,827 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:23,827 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:23,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:23,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:23,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:23,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:23,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:23,828 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:23,828 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 568 predicate places. [2021-08-13 12:53:23,828 INFO L482 AbstractCegarLoop]: Abstraction has has 612 places, 1284 transitions, 204866 flow [2021-08-13 12:53:23,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:23,828 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:23,829 INFO L266 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] [2021-08-13 12:53:23,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-08-13 12:53:23,829 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:23,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:23,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1464184719, now seen corresponding path program 81 times [2021-08-13 12:53:23,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:23,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88483599] [2021-08-13 12:53:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:23,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:23,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:23,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:23,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:23,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:23,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:23,847 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:53:23,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:53:23,855 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:53:23,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:53:23,868 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:23,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:23,886 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:23,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:23,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:23,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88483599] [2021-08-13 12:53:23,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88483599] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:23,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:23,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:23,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909933385] [2021-08-13 12:53:23,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:23,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:23,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:23,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:23,905 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:23,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 1284 transitions, 204866 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:23,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:23,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:23,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:26,923 INFO L129 PetriNetUnfolder]: 245/4103 cut-off events. [2021-08-13 12:53:26,923 INFO L130 PetriNetUnfolder]: For 1542341/1674259 co-relation queries the response was YES. [2021-08-13 12:53:26,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109689 conditions, 4103 events. 245/4103 cut-off events. For 1542341/1674259 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62709 event pairs, 0 based on Foata normal form. 75/4055 useless extension candidates. Maximal degree in co-relation 87147. Up to 802 conditions per place. [2021-08-13 12:53:26,986 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 805 selfloop transitions, 256 changer transitions 202/1283 dead transitions. [2021-08-13 12:53:26,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 1283 transitions, 207230 flow [2021-08-13 12:53:26,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:26,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:26,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:26,987 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:26,987 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:26,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:26,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:26,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:26,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:26,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:26,988 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:26,988 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 575 predicate places. [2021-08-13 12:53:26,988 INFO L482 AbstractCegarLoop]: Abstraction has has 619 places, 1283 transitions, 207230 flow [2021-08-13 12:53:26,988 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:26,988 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:26,988 INFO L266 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] [2021-08-13 12:53:26,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-08-13 12:53:26,988 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:26,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:26,989 INFO L82 PathProgramCache]: Analyzing trace with hash -2110886207, now seen corresponding path program 82 times [2021-08-13 12:53:26,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:26,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466799584] [2021-08-13 12:53:26,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:27,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:27,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:27,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:27,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:27,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:27,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:27,020 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:53:27,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:53:27,029 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:53:27,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:53:27,042 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:27,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:27,058 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:27,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:27,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:27,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466799584] [2021-08-13 12:53:27,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466799584] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:27,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:27,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:27,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600035312] [2021-08-13 12:53:27,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:27,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:27,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:27,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:27,075 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:27,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 1283 transitions, 207230 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:27,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:27,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:27,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:30,254 INFO L129 PetriNetUnfolder]: 245/4102 cut-off events. [2021-08-13 12:53:30,255 INFO L130 PetriNetUnfolder]: For 2028668/2268033 co-relation queries the response was YES. [2021-08-13 12:53:30,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110870 conditions, 4102 events. 245/4102 cut-off events. For 2028668/2268033 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62773 event pairs, 0 based on Foata normal form. 107/4086 useless extension candidates. Maximal degree in co-relation 88149. Up to 801 conditions per place. [2021-08-13 12:53:30,321 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 805 selfloop transitions, 250 changer transitions 207/1282 dead transitions. [2021-08-13 12:53:30,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 1282 transitions, 209590 flow [2021-08-13 12:53:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:30,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:30,322 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:30,322 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:30,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:30,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:30,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:30,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:30,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:30,323 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:30,323 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 582 predicate places. [2021-08-13 12:53:30,323 INFO L482 AbstractCegarLoop]: Abstraction has has 626 places, 1282 transitions, 209590 flow [2021-08-13 12:53:30,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:30,323 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:30,323 INFO L266 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] [2021-08-13 12:53:30,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-08-13 12:53:30,324 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:30,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:30,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1125458977, now seen corresponding path program 83 times [2021-08-13 12:53:30,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:30,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403873888] [2021-08-13 12:53:30,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:30,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:30,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:30,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:30,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:30,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:30,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:30,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:53:30,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:53:30,356 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:53:30,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:53:30,368 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:30,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:30,386 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:30,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:30,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:30,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403873888] [2021-08-13 12:53:30,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403873888] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:30,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:30,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:30,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275189107] [2021-08-13 12:53:30,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:30,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:30,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:30,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:30,405 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:30,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 1282 transitions, 209590 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:30,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:30,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:30,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:33,528 INFO L129 PetriNetUnfolder]: 245/4103 cut-off events. [2021-08-13 12:53:33,528 INFO L130 PetriNetUnfolder]: For 1616839/1755209 co-relation queries the response was YES. [2021-08-13 12:53:33,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112053 conditions, 4103 events. 245/4103 cut-off events. For 1616839/1755209 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62716 event pairs, 0 based on Foata normal form. 73/4054 useless extension candidates. Maximal degree in co-relation 89155. Up to 800 conditions per place. [2021-08-13 12:53:33,764 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 792 selfloop transitions, 259 changer transitions 210/1281 dead transitions. [2021-08-13 12:53:33,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 1281 transitions, 211946 flow [2021-08-13 12:53:33,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:33,766 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:33,766 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:33,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:33,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:33,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:33,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:33,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:33,767 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:33,767 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 589 predicate places. [2021-08-13 12:53:33,767 INFO L482 AbstractCegarLoop]: Abstraction has has 633 places, 1281 transitions, 211946 flow [2021-08-13 12:53:33,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:33,767 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:33,768 INFO L266 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] [2021-08-13 12:53:33,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-08-13 12:53:33,768 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:33,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:33,768 INFO L82 PathProgramCache]: Analyzing trace with hash 988450507, now seen corresponding path program 84 times [2021-08-13 12:53:33,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:33,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719078249] [2021-08-13 12:53:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:33,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:33,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:33,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:33,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:33,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:33,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:33,791 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:53:33,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:53:33,802 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:53:33,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:53:33,816 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:33,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:33,849 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:33,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:33,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:33,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:33,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719078249] [2021-08-13 12:53:33,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719078249] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:33,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:33,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:33,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107725871] [2021-08-13 12:53:33,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:33,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:33,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:33,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:33,880 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:33,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 1281 transitions, 211946 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:33,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:33,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:33,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:37,100 INFO L129 PetriNetUnfolder]: 245/4100 cut-off events. [2021-08-13 12:53:37,101 INFO L130 PetriNetUnfolder]: For 1818545/1996336 co-relation queries the response was YES. [2021-08-13 12:53:37,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113226 conditions, 4100 events. 245/4100 cut-off events. For 1818545/1996336 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62618 event pairs, 0 based on Foata normal form. 88/4065 useless extension candidates. Maximal degree in co-relation 90153. Up to 799 conditions per place. [2021-08-13 12:53:37,195 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 798 selfloop transitions, 250 changer transitions 212/1280 dead transitions. [2021-08-13 12:53:37,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 1280 transitions, 214298 flow [2021-08-13 12:53:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:37,196 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:37,196 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:37,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:37,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:37,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:37,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:37,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:37,197 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:37,197 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 596 predicate places. [2021-08-13 12:53:37,197 INFO L482 AbstractCegarLoop]: Abstraction has has 640 places, 1280 transitions, 214298 flow [2021-08-13 12:53:37,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:37,198 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:37,198 INFO L266 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] [2021-08-13 12:53:37,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-08-13 12:53:37,198 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:37,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:37,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1696568995, now seen corresponding path program 85 times [2021-08-13 12:53:37,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:37,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43222683] [2021-08-13 12:53:37,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:37,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:37,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:37,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:37,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:37,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:37,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:37,222 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:53:37,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:53:37,232 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:53:37,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:53:37,246 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:37,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:37,265 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:37,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:37,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:37,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43222683] [2021-08-13 12:53:37,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43222683] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:37,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:37,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:37,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527438276] [2021-08-13 12:53:37,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:37,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:37,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:37,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:37,283 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:37,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 1280 transitions, 214298 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:37,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:37,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:37,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:40,520 INFO L129 PetriNetUnfolder]: 245/4099 cut-off events. [2021-08-13 12:53:40,520 INFO L130 PetriNetUnfolder]: For 1696561/1841395 co-relation queries the response was YES. [2021-08-13 12:53:40,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114401 conditions, 4099 events. 245/4099 cut-off events. For 1696561/1841395 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62620 event pairs, 0 based on Foata normal form. 73/4049 useless extension candidates. Maximal degree in co-relation 91155. Up to 798 conditions per place. [2021-08-13 12:53:40,586 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 797 selfloop transitions, 246 changer transitions 216/1279 dead transitions. [2021-08-13 12:53:40,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 647 places, 1279 transitions, 216646 flow [2021-08-13 12:53:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:40,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:40,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:40,587 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:40,587 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:40,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:40,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:40,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:40,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:40,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:40,588 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:40,588 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 603 predicate places. [2021-08-13 12:53:40,588 INFO L482 AbstractCegarLoop]: Abstraction has has 647 places, 1279 transitions, 216646 flow [2021-08-13 12:53:40,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:40,588 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:40,588 INFO L266 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] [2021-08-13 12:53:40,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-08-13 12:53:40,589 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:40,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:40,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1505858515, now seen corresponding path program 86 times [2021-08-13 12:53:40,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:40,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143454565] [2021-08-13 12:53:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:40,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:40,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:40,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:40,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:40,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:40,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:40,605 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:53:40,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:53:40,809 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-08-13 12:53:40,810 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:53:40,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:53:40,838 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:53:40,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:53:40,855 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:40,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:40,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:40,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:40,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143454565] [2021-08-13 12:53:40,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143454565] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:40,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:40,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:40,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742459474] [2021-08-13 12:53:40,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:40,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:40,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:40,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:40,871 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:40,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 1279 transitions, 216646 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:40,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:40,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:40,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:44,109 INFO L129 PetriNetUnfolder]: 245/4098 cut-off events. [2021-08-13 12:53:44,110 INFO L130 PetriNetUnfolder]: For 1909321/2095420 co-relation queries the response was YES. [2021-08-13 12:53:44,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115574 conditions, 4098 events. 245/4098 cut-off events. For 1909321/2095420 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62654 event pairs, 0 based on Foata normal form. 88/4063 useless extension candidates. Maximal degree in co-relation 92157. Up to 797 conditions per place. [2021-08-13 12:53:44,176 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 783 selfloop transitions, 259 changer transitions 216/1278 dead transitions. [2021-08-13 12:53:44,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 1278 transitions, 218990 flow [2021-08-13 12:53:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:44,177 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:44,177 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:44,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:44,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:44,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:44,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:44,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:44,178 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:44,178 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 610 predicate places. [2021-08-13 12:53:44,179 INFO L482 AbstractCegarLoop]: Abstraction has has 654 places, 1278 transitions, 218990 flow [2021-08-13 12:53:44,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:44,179 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:44,179 INFO L266 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] [2021-08-13 12:53:44,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-08-13 12:53:44,179 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:44,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:44,179 INFO L82 PathProgramCache]: Analyzing trace with hash -311706487, now seen corresponding path program 87 times [2021-08-13 12:53:44,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:44,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159967388] [2021-08-13 12:53:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:44,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:44,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:44,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:44,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:44,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:44,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:44,213 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:53:44,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:53:44,231 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:53:44,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:53:44,254 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:44,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:44,271 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:44,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:44,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:44,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159967388] [2021-08-13 12:53:44,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159967388] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:44,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:44,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:44,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208275174] [2021-08-13 12:53:44,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:44,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:44,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:44,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:44,289 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:44,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 1278 transitions, 218990 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:44,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:44,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:44,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:47,478 INFO L129 PetriNetUnfolder]: 245/4097 cut-off events. [2021-08-13 12:53:47,478 INFO L130 PetriNetUnfolder]: For 2294028/2558563 co-relation queries the response was YES. [2021-08-13 12:53:47,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116745 conditions, 4097 events. 245/4097 cut-off events. For 2294028/2558563 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62668 event pairs, 0 based on Foata normal form. 107/4081 useless extension candidates. Maximal degree in co-relation 93159. Up to 796 conditions per place. [2021-08-13 12:53:47,735 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 780 selfloop transitions, 256 changer transitions 221/1277 dead transitions. [2021-08-13 12:53:47,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 1277 transitions, 221330 flow [2021-08-13 12:53:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:47,736 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:47,736 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:47,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:47,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:47,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:47,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:47,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:47,756 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:47,756 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 617 predicate places. [2021-08-13 12:53:47,756 INFO L482 AbstractCegarLoop]: Abstraction has has 661 places, 1277 transitions, 221330 flow [2021-08-13 12:53:47,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:47,756 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:47,756 INFO L266 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] [2021-08-13 12:53:47,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-08-13 12:53:47,756 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:47,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:47,756 INFO L82 PathProgramCache]: Analyzing trace with hash -2063263389, now seen corresponding path program 88 times [2021-08-13 12:53:47,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:47,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466831509] [2021-08-13 12:53:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:47,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:47,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:47,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:47,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:47,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:47,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:47,790 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:53:47,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:53:47,818 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:53:47,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:53:47,846 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:47,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:47,861 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:47,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:47,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:47,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466831509] [2021-08-13 12:53:47,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466831509] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:47,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:47,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:47,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597390400] [2021-08-13 12:53:47,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:47,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:47,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:47,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:47,876 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:47,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 1277 transitions, 221330 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:47,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:47,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:47,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:51,112 INFO L129 PetriNetUnfolder]: 245/4097 cut-off events. [2021-08-13 12:53:51,112 INFO L130 PetriNetUnfolder]: For 2170380/2399868 co-relation queries the response was YES. [2021-08-13 12:53:51,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117916 conditions, 4097 events. 245/4097 cut-off events. For 2170380/2399868 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62663 event pairs, 0 based on Foata normal form. 94/4069 useless extension candidates. Maximal degree in co-relation 94163. Up to 795 conditions per place. [2021-08-13 12:53:51,186 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 778 selfloop transitions, 255 changer transitions 223/1276 dead transitions. [2021-08-13 12:53:51,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 1276 transitions, 223666 flow [2021-08-13 12:53:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:51,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:51,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:51,187 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:51,187 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:51,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:51,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:51,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:51,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:51,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:51,188 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:51,188 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 624 predicate places. [2021-08-13 12:53:51,188 INFO L482 AbstractCegarLoop]: Abstraction has has 668 places, 1276 transitions, 223666 flow [2021-08-13 12:53:51,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:51,189 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:51,189 INFO L266 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] [2021-08-13 12:53:51,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-08-13 12:53:51,189 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:51,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:51,189 INFO L82 PathProgramCache]: Analyzing trace with hash 938578967, now seen corresponding path program 89 times [2021-08-13 12:53:51,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:51,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598262129] [2021-08-13 12:53:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:51,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:51,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:51,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:51,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:51,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:51,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:51,218 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:53:51,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:53:51,237 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:53:51,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:53:51,263 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:53:51,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:53:51,284 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:51,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:51,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:51,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598262129] [2021-08-13 12:53:51,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598262129] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:51,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:51,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:51,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595163275] [2021-08-13 12:53:51,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:51,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:51,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:51,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:51,303 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:51,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 1276 transitions, 223666 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:51,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:51,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:51,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:54,830 INFO L129 PetriNetUnfolder]: 245/4095 cut-off events. [2021-08-13 12:53:54,830 INFO L130 PetriNetUnfolder]: For 1975371/2147969 co-relation queries the response was YES. [2021-08-13 12:53:54,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119081 conditions, 4095 events. 245/4095 cut-off events. For 1975371/2147969 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62648 event pairs, 0 based on Foata normal form. 76/4048 useless extension candidates. Maximal degree in co-relation 95163. Up to 794 conditions per place. [2021-08-13 12:53:54,899 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 776 selfloop transitions, 252 changer transitions 227/1275 dead transitions. [2021-08-13 12:53:54,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 1275 transitions, 225998 flow [2021-08-13 12:53:54,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:54,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:54,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:54,900 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:54,900 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:54,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:54,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:54,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:54,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:54,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:54,901 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:54,901 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 631 predicate places. [2021-08-13 12:53:54,901 INFO L482 AbstractCegarLoop]: Abstraction has has 675 places, 1275 transitions, 225998 flow [2021-08-13 12:53:54,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:54,901 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:54,901 INFO L266 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] [2021-08-13 12:53:54,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-08-13 12:53:54,901 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:54,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:54,901 INFO L82 PathProgramCache]: Analyzing trace with hash -520565829, now seen corresponding path program 90 times [2021-08-13 12:53:54,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:54,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513789832] [2021-08-13 12:53:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:54,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:54,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:54,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:54,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:54,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:54,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:54,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:53:54,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:53:54,928 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:53:54,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:53:54,940 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:54,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:54,958 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:54,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:54,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:54,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513789832] [2021-08-13 12:53:54,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513789832] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:54,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:54,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:54,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126716469] [2021-08-13 12:53:54,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:54,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:54,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:54,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:54,977 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:54,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 1275 transitions, 225998 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:54,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:54,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:54,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:53:58,791 INFO L129 PetriNetUnfolder]: 245/4094 cut-off events. [2021-08-13 12:53:58,791 INFO L130 PetriNetUnfolder]: For 2020372/2196280 co-relation queries the response was YES. [2021-08-13 12:53:58,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120246 conditions, 4094 events. 245/4094 cut-off events. For 2020372/2196280 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62628 event pairs, 0 based on Foata normal form. 76/4047 useless extension candidates. Maximal degree in co-relation 96165. Up to 793 conditions per place. [2021-08-13 12:53:58,863 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 774 selfloop transitions, 253 changer transitions 227/1274 dead transitions. [2021-08-13 12:53:58,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 1274 transitions, 228326 flow [2021-08-13 12:53:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:53:58,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:53:58,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:53:58,864 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:53:58,864 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:53:58,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:53:58,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:53:58,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:53:58,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:58,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:58,865 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:58,865 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 638 predicate places. [2021-08-13 12:53:58,865 INFO L482 AbstractCegarLoop]: Abstraction has has 682 places, 1274 transitions, 228326 flow [2021-08-13 12:53:58,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:58,865 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:53:58,865 INFO L266 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] [2021-08-13 12:53:58,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-08-13 12:53:58,866 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:53:58,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:53:58,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1057808117, now seen corresponding path program 91 times [2021-08-13 12:53:58,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:53:58,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572298423] [2021-08-13 12:53:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:53:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:53:58,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:58,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:53:58,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:58,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:53:58,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:53:58,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:53:58,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:53:58,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:53:58,898 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:53:58,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:53:58,917 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:53:58,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:53:58,935 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:53:58,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:53:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:53:58,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:53:58,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572298423] [2021-08-13 12:53:58,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572298423] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:53:58,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:53:58,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:53:58,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000960546] [2021-08-13 12:53:58,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:53:58,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:53:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:53:58,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:53:58,953 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:53:58,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 1274 transitions, 228326 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:53:58,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:53:58,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:53:58,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:02,227 INFO L129 PetriNetUnfolder]: 245/4094 cut-off events. [2021-08-13 12:54:02,227 INFO L130 PetriNetUnfolder]: For 1951517/2115755 co-relation queries the response was YES. [2021-08-13 12:54:02,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121411 conditions, 4094 events. 245/4094 cut-off events. For 1951517/2115755 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62553 event pairs, 0 based on Foata normal form. 75/4047 useless extension candidates. Maximal degree in co-relation 97169. Up to 792 conditions per place. [2021-08-13 12:54:02,297 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 773 selfloop transitions, 253 changer transitions 227/1273 dead transitions. [2021-08-13 12:54:02,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 1273 transitions, 230650 flow [2021-08-13 12:54:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:54:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:54:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:54:02,298 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:54:02,298 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:54:02,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:54:02,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:02,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:54:02,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:02,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:02,299 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:02,299 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 645 predicate places. [2021-08-13 12:54:02,299 INFO L482 AbstractCegarLoop]: Abstraction has has 689 places, 1273 transitions, 230650 flow [2021-08-13 12:54:02,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:02,299 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:02,299 INFO L266 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] [2021-08-13 12:54:02,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-08-13 12:54:02,299 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:02,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:02,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1790357819, now seen corresponding path program 92 times [2021-08-13 12:54:02,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:02,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369484910] [2021-08-13 12:54:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:02,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:02,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:02,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:02,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:02,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:02,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:02,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:54:02,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:54:02,631 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:54:02,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:54:02,645 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:54:02,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:54:02,664 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:54:02,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:54:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:54:02,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:02,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369484910] [2021-08-13 12:54:02,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369484910] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:02,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:02,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:02,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641481824] [2021-08-13 12:54:02,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:54:02,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:02,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:54:02,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:54:02,684 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:54:02,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 689 places, 1273 transitions, 230650 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:02,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:02,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:54:02,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:06,273 INFO L129 PetriNetUnfolder]: 245/4092 cut-off events. [2021-08-13 12:54:06,273 INFO L130 PetriNetUnfolder]: For 2195401/2406424 co-relation queries the response was YES. [2021-08-13 12:54:06,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122570 conditions, 4092 events. 245/4092 cut-off events. For 2195401/2406424 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62556 event pairs, 0 based on Foata normal form. 88/4057 useless extension candidates. Maximal degree in co-relation 98169. Up to 791 conditions per place. [2021-08-13 12:54:06,367 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 771 selfloop transitions, 254 changer transitions 227/1272 dead transitions. [2021-08-13 12:54:06,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 1272 transitions, 232970 flow [2021-08-13 12:54:06,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:54:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:54:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:54:06,368 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:54:06,368 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:54:06,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:54:06,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:06,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:54:06,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:06,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:06,369 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:06,369 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 652 predicate places. [2021-08-13 12:54:06,370 INFO L482 AbstractCegarLoop]: Abstraction has has 696 places, 1272 transitions, 232970 flow [2021-08-13 12:54:06,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:06,370 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:06,370 INFO L266 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] [2021-08-13 12:54:06,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-08-13 12:54:06,370 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:06,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1635735199, now seen corresponding path program 93 times [2021-08-13 12:54:06,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:06,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679869268] [2021-08-13 12:54:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:06,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:06,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:06,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:06,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:06,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:06,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:06,388 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:54:06,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:54:06,396 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:54:06,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:54:06,408 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:54:06,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:54:06,424 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:54:06,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:54:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:54:06,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:06,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679869268] [2021-08-13 12:54:06,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679869268] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:06,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:06,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:06,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624329426] [2021-08-13 12:54:06,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:54:06,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:06,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:54:06,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:54:06,443 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:54:06,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 1272 transitions, 232970 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:06,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:06,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:54:06,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:10,625 INFO L129 PetriNetUnfolder]: 245/4091 cut-off events. [2021-08-13 12:54:10,625 INFO L130 PetriNetUnfolder]: For 2634669/2929408 co-relation queries the response was YES. [2021-08-13 12:54:10,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123729 conditions, 4091 events. 245/4091 cut-off events. For 2634669/2929408 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62528 event pairs, 0 based on Foata normal form. 107/4075 useless extension candidates. Maximal degree in co-relation 99171. Up to 790 conditions per place. [2021-08-13 12:54:10,694 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 772 selfloop transitions, 252 changer transitions 227/1271 dead transitions. [2021-08-13 12:54:10,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 703 places, 1271 transitions, 235286 flow [2021-08-13 12:54:10,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:54:10,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:54:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:54:10,695 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:54:10,695 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:54:10,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:54:10,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:10,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:54:10,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:10,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:10,696 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:10,696 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 659 predicate places. [2021-08-13 12:54:10,696 INFO L482 AbstractCegarLoop]: Abstraction has has 703 places, 1271 transitions, 235286 flow [2021-08-13 12:54:10,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:10,697 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:10,697 INFO L266 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] [2021-08-13 12:54:10,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-08-13 12:54:10,697 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:10,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:10,697 INFO L82 PathProgramCache]: Analyzing trace with hash 684472733, now seen corresponding path program 94 times [2021-08-13 12:54:10,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:10,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708342593] [2021-08-13 12:54:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:10,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:10,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:10,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:10,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:10,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:10,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:10,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:54:10,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:54:10,726 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:54:10,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:54:10,748 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:54:10,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:54:10,765 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:54:10,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:54:10,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:54:10,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:10,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708342593] [2021-08-13 12:54:10,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708342593] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:10,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:10,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:10,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86719950] [2021-08-13 12:54:10,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:54:10,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:10,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:54:10,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:54:10,784 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:54:10,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 1271 transitions, 235286 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:10,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:10,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:54:10,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:14,173 INFO L129 PetriNetUnfolder]: 245/4090 cut-off events. [2021-08-13 12:54:14,174 INFO L130 PetriNetUnfolder]: For 2477768/2731916 co-relation queries the response was YES. [2021-08-13 12:54:14,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124886 conditions, 4090 events. 245/4090 cut-off events. For 2477768/2731916 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62426 event pairs, 0 based on Foata normal form. 92/4059 useless extension candidates. Maximal degree in co-relation 100173. Up to 789 conditions per place. [2021-08-13 12:54:14,243 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 766 selfloop transitions, 257 changer transitions 227/1270 dead transitions. [2021-08-13 12:54:14,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 1270 transitions, 237598 flow [2021-08-13 12:54:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:54:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:54:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:54:14,244 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:54:14,244 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:54:14,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:54:14,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:14,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:54:14,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:14,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:14,245 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:14,245 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 666 predicate places. [2021-08-13 12:54:14,245 INFO L482 AbstractCegarLoop]: Abstraction has has 710 places, 1270 transitions, 237598 flow [2021-08-13 12:54:14,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:14,245 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:14,245 INFO L266 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] [2021-08-13 12:54:14,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-08-13 12:54:14,245 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:14,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:14,246 INFO L82 PathProgramCache]: Analyzing trace with hash 762445537, now seen corresponding path program 95 times [2021-08-13 12:54:14,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:14,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170476119] [2021-08-13 12:54:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:14,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:14,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:14,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:14,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:14,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:14,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:14,264 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:54:14,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:54:14,272 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:54:14,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:54:14,294 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:54:14,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:54:14,313 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:54:14,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:54:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:54:14,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:14,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170476119] [2021-08-13 12:54:14,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170476119] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:14,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:14,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:14,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662102668] [2021-08-13 12:54:14,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:54:14,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:14,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:54:14,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:54:14,334 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:54:14,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 1270 transitions, 237598 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:14,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:14,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:54:14,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:17,891 INFO L129 PetriNetUnfolder]: 245/4089 cut-off events. [2021-08-13 12:54:17,891 INFO L130 PetriNetUnfolder]: For 2753496/3058303 co-relation queries the response was YES. [2021-08-13 12:54:17,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126041 conditions, 4089 events. 245/4089 cut-off events. For 2753496/3058303 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62507 event pairs, 0 based on Foata normal form. 107/4073 useless extension candidates. Maximal degree in co-relation 101175. Up to 788 conditions per place. [2021-08-13 12:54:17,962 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 759 selfloop transitions, 247 changer transitions 243/1269 dead transitions. [2021-08-13 12:54:17,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 1269 transitions, 239906 flow [2021-08-13 12:54:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:54:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:54:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:54:17,977 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:54:17,977 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:54:17,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:54:17,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:17,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:54:17,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:17,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:17,978 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:17,978 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 673 predicate places. [2021-08-13 12:54:17,978 INFO L482 AbstractCegarLoop]: Abstraction has has 717 places, 1269 transitions, 239906 flow [2021-08-13 12:54:17,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:17,978 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:17,978 INFO L266 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] [2021-08-13 12:54:17,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-08-13 12:54:17,978 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:17,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:17,978 INFO L82 PathProgramCache]: Analyzing trace with hash 2009123215, now seen corresponding path program 96 times [2021-08-13 12:54:17,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:17,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596237403] [2021-08-13 12:54:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:17,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:17,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:17,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:17,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:17,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:17,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:18,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:18,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:54:18,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:54:18,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:54:18,023 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:54:18,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:54:18,039 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:54:18,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:54:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:54:18,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:18,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596237403] [2021-08-13 12:54:18,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596237403] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:18,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:18,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:18,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348922569] [2021-08-13 12:54:18,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:54:18,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:18,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:54:18,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:54:18,057 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:54:18,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 1269 transitions, 239906 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:18,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:18,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:54:18,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:21,818 INFO L129 PetriNetUnfolder]: 245/4090 cut-off events. [2021-08-13 12:54:21,819 INFO L130 PetriNetUnfolder]: For 2169508/2349894 co-relation queries the response was YES. [2021-08-13 12:54:21,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127198 conditions, 4090 events. 245/4090 cut-off events. For 2169508/2349894 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62542 event pairs, 0 based on Foata normal form. 73/4041 useless extension candidates. Maximal degree in co-relation 102181. Up to 787 conditions per place. [2021-08-13 12:54:21,895 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 756 selfloop transitions, 247 changer transitions 245/1268 dead transitions. [2021-08-13 12:54:21,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 1268 transitions, 242210 flow [2021-08-13 12:54:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:54:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:54:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:54:21,897 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:54:21,897 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:54:21,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:54:21,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:21,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:54:21,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:21,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:21,902 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:21,902 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 680 predicate places. [2021-08-13 12:54:21,902 INFO L482 AbstractCegarLoop]: Abstraction has has 724 places, 1268 transitions, 242210 flow [2021-08-13 12:54:21,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:21,902 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:21,902 INFO L266 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] [2021-08-13 12:54:21,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-08-13 12:54:21,902 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:21,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:21,902 INFO L82 PathProgramCache]: Analyzing trace with hash -94696627, now seen corresponding path program 97 times [2021-08-13 12:54:21,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:21,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979531562] [2021-08-13 12:54:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:21,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:21,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:21,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:21,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:21,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:21,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:21,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:21,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:54:21,935 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:54:21,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:54:21,949 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:54:21,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:54:21,969 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:54:21,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:54:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:54:22,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:22,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979531562] [2021-08-13 12:54:22,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979531562] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:22,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:22,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:22,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848563808] [2021-08-13 12:54:22,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:54:22,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:22,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:54:22,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:54:22,007 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:54:22,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 1268 transitions, 242210 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:22,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:22,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:54:22,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:26,139 INFO L129 PetriNetUnfolder]: 245/4087 cut-off events. [2021-08-13 12:54:26,139 INFO L130 PetriNetUnfolder]: For 2449201/2680994 co-relation queries the response was YES. [2021-08-13 12:54:26,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128345 conditions, 4087 events. 245/4087 cut-off events. For 2449201/2680994 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62527 event pairs, 0 based on Foata normal form. 88/4052 useless extension candidates. Maximal degree in co-relation 103179. Up to 786 conditions per place. [2021-08-13 12:54:26,227 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 754 selfloop transitions, 245 changer transitions 248/1267 dead transitions. [2021-08-13 12:54:26,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 1267 transitions, 244510 flow [2021-08-13 12:54:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:54:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:54:26,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:54:26,228 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:54:26,228 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:54:26,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:54:26,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:26,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:54:26,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:26,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:26,229 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:26,229 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 687 predicate places. [2021-08-13 12:54:26,229 INFO L482 AbstractCegarLoop]: Abstraction has has 731 places, 1267 transitions, 244510 flow [2021-08-13 12:54:26,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:26,229 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:26,229 INFO L266 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] [2021-08-13 12:54:26,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-08-13 12:54:26,229 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:26,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:26,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1414260673, now seen corresponding path program 98 times [2021-08-13 12:54:26,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:26,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752614963] [2021-08-13 12:54:26,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:26,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:26,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:26,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:26,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:26,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:26,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:26,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:26,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:54:26,283 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:54:26,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:54:26,304 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:54:26,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:54:26,325 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:54:26,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:54:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:54:26,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:26,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752614963] [2021-08-13 12:54:26,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752614963] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:26,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:26,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:26,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573161392] [2021-08-13 12:54:26,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:54:26,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:26,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:54:26,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:54:26,346 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:54:26,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 1267 transitions, 244510 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:26,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:26,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:54:26,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:30,269 INFO L129 PetriNetUnfolder]: 245/4086 cut-off events. [2021-08-13 12:54:30,269 INFO L130 PetriNetUnfolder]: For 2701319/2971927 co-relation queries the response was YES. [2021-08-13 12:54:30,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129494 conditions, 4086 events. 245/4086 cut-off events. For 2701319/2971927 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62429 event pairs, 0 based on Foata normal form. 94/4057 useless extension candidates. Maximal degree in co-relation 104181. Up to 785 conditions per place. [2021-08-13 12:54:30,344 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 748 selfloop transitions, 248 changer transitions 250/1266 dead transitions. [2021-08-13 12:54:30,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 1266 transitions, 246806 flow [2021-08-13 12:54:30,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:54:30,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:54:30,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:54:30,345 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:54:30,345 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:54:30,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:54:30,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:30,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:54:30,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:30,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:30,524 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:30,524 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 694 predicate places. [2021-08-13 12:54:30,525 INFO L482 AbstractCegarLoop]: Abstraction has has 738 places, 1266 transitions, 246806 flow [2021-08-13 12:54:30,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:30,525 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:30,525 INFO L266 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] [2021-08-13 12:54:30,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-08-13 12:54:30,525 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:30,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:30,525 INFO L82 PathProgramCache]: Analyzing trace with hash -660149955, now seen corresponding path program 99 times [2021-08-13 12:54:30,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:30,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172129847] [2021-08-13 12:54:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:30,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:30,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:30,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:30,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:30,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:30,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:30,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:30,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:54:30,582 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 12:54:30,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 12:54:30,619 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:54:30,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:54:30,649 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:54:30,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:54:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:54:30,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:30,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172129847] [2021-08-13 12:54:30,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172129847] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:30,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:30,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:30,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116237050] [2021-08-13 12:54:30,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:54:30,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:30,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:54:30,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:54:30,669 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:54:30,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 1266 transitions, 246806 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:30,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:30,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:54:30,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:34,712 INFO L129 PetriNetUnfolder]: 245/4085 cut-off events. [2021-08-13 12:54:34,713 INFO L130 PetriNetUnfolder]: For 2522534/2761104 co-relation queries the response was YES. [2021-08-13 12:54:34,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130641 conditions, 4085 events. 245/4085 cut-off events. For 2522534/2761104 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62370 event pairs, 0 based on Foata normal form. 86/4048 useless extension candidates. Maximal degree in co-relation 105183. Up to 784 conditions per place. [2021-08-13 12:54:34,792 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 746 selfloop transitions, 246 changer transitions 253/1265 dead transitions. [2021-08-13 12:54:34,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 745 places, 1265 transitions, 249098 flow [2021-08-13 12:54:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:54:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:54:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:54:34,793 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:54:34,793 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:54:34,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:54:34,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:34,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:54:34,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:34,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:34,809 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:34,809 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 701 predicate places. [2021-08-13 12:54:34,809 INFO L482 AbstractCegarLoop]: Abstraction has has 745 places, 1265 transitions, 249098 flow [2021-08-13 12:54:34,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:34,809 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:34,809 INFO L266 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] [2021-08-13 12:54:34,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-08-13 12:54:34,809 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:34,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:34,809 INFO L82 PathProgramCache]: Analyzing trace with hash 631074171, now seen corresponding path program 100 times [2021-08-13 12:54:34,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:34,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756658128] [2021-08-13 12:54:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:34,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:34,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:34,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:34,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:34,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:34,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:34,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:34,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:54:34,846 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:54:34,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:54:34,858 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:54:34,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:54:34,878 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:54:34,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:54:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:54:34,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:34,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756658128] [2021-08-13 12:54:34,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756658128] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:34,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:34,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:34,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494289504] [2021-08-13 12:54:34,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:54:34,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:34,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:54:34,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:54:34,912 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:54:34,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 745 places, 1265 transitions, 249098 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:34,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:34,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:54:34,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:39,099 INFO L129 PetriNetUnfolder]: 245/4084 cut-off events. [2021-08-13 12:54:39,099 INFO L130 PetriNetUnfolder]: For 2360386/2553712 co-relation queries the response was YES. [2021-08-13 12:54:39,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131786 conditions, 4084 events. 245/4084 cut-off events. For 2360386/2553712 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62328 event pairs, 0 based on Foata normal form. 75/4036 useless extension candidates. Maximal degree in co-relation 106185. Up to 783 conditions per place. [2021-08-13 12:54:39,172 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 744 selfloop transitions, 247 changer transitions 253/1264 dead transitions. [2021-08-13 12:54:39,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 1264 transitions, 251386 flow [2021-08-13 12:54:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:54:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:54:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:54:39,173 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:54:39,173 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:54:39,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:54:39,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:39,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:54:39,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:39,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:39,180 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:39,181 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 708 predicate places. [2021-08-13 12:54:39,181 INFO L482 AbstractCegarLoop]: Abstraction has has 752 places, 1264 transitions, 251386 flow [2021-08-13 12:54:39,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:39,181 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:39,181 INFO L266 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] [2021-08-13 12:54:39,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-08-13 12:54:39,181 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:39,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:39,181 INFO L82 PathProgramCache]: Analyzing trace with hash -753197339, now seen corresponding path program 101 times [2021-08-13 12:54:39,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:39,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407307806] [2021-08-13 12:54:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:39,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:39,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:39,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:39,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:39,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:39,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:39,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:39,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:54:39,209 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:54:39,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:54:39,237 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 12:54:39,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 12:54:39,254 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:54:39,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:54:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:54:39,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:39,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407307806] [2021-08-13 12:54:39,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407307806] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:39,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:39,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:39,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958555177] [2021-08-13 12:54:39,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:54:39,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:39,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:54:39,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:54:39,272 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:54:39,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 1264 transitions, 251386 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:39,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:39,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:54:39,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:43,900 INFO L129 PetriNetUnfolder]: 245/4083 cut-off events. [2021-08-13 12:54:43,901 INFO L130 PetriNetUnfolder]: For 2662051/2910460 co-relation queries the response was YES. [2021-08-13 12:54:43,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132929 conditions, 4083 events. 245/4083 cut-off events. For 2662051/2910460 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62417 event pairs, 0 based on Foata normal form. 88/4048 useless extension candidates. Maximal degree in co-relation 107187. Up to 782 conditions per place. [2021-08-13 12:54:44,002 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 741 selfloop transitions, 242 changer transitions 260/1263 dead transitions. [2021-08-13 12:54:44,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 1263 transitions, 253670 flow [2021-08-13 12:54:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:54:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:54:44,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:54:44,003 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:54:44,003 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:54:44,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:54:44,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:44,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:54:44,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:44,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:44,004 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:44,004 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 715 predicate places. [2021-08-13 12:54:44,004 INFO L482 AbstractCegarLoop]: Abstraction has has 759 places, 1263 transitions, 253670 flow [2021-08-13 12:54:44,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:44,005 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:44,005 INFO L266 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] [2021-08-13 12:54:44,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-08-13 12:54:44,005 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:44,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:44,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1528265887, now seen corresponding path program 102 times [2021-08-13 12:54:44,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:44,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919346132] [2021-08-13 12:54:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:44,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:44,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:44,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:44,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:44,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:44,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:44,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:44,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:54:44,028 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:54:44,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:54:44,040 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:54:44,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:54:44,059 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:54:44,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:54:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:54:44,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:44,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919346132] [2021-08-13 12:54:44,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919346132] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:44,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:44,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:44,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430974446] [2021-08-13 12:54:44,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:54:44,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:44,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:54:44,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:54:44,077 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:54:44,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 759 places, 1263 transitions, 253670 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:44,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:44,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:54:44,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:49,693 INFO L129 PetriNetUnfolder]: 245/4083 cut-off events. [2021-08-13 12:54:49,694 INFO L130 PetriNetUnfolder]: For 2456241/2656031 co-relation queries the response was YES. [2021-08-13 12:54:49,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134072 conditions, 4083 events. 245/4083 cut-off events. For 2456241/2656031 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62405 event pairs, 0 based on Foata normal form. 75/4036 useless extension candidates. Maximal degree in co-relation 108191. Up to 781 conditions per place. [2021-08-13 12:54:49,774 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 743 selfloop transitions, 239 changer transitions 260/1262 dead transitions. [2021-08-13 12:54:49,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 766 places, 1262 transitions, 255950 flow [2021-08-13 12:54:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:54:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:54:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:54:49,774 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:54:49,775 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:54:49,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:54:49,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:49,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:54:49,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:49,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:49,775 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:49,775 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 722 predicate places. [2021-08-13 12:54:49,775 INFO L482 AbstractCegarLoop]: Abstraction has has 766 places, 1262 transitions, 255950 flow [2021-08-13 12:54:49,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:49,776 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:49,776 INFO L266 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] [2021-08-13 12:54:49,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-08-13 12:54:49,776 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:49,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:49,776 INFO L82 PathProgramCache]: Analyzing trace with hash 658202147, now seen corresponding path program 103 times [2021-08-13 12:54:49,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:49,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909555222] [2021-08-13 12:54:49,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:49,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:49,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:49,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:49,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:50,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:50,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:50,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:54:50,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:54:50,109 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:54:50,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:54:50,123 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:54:50,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:54:50,143 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:54:50,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:54:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:54:50,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:50,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909555222] [2021-08-13 12:54:50,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909555222] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:50,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:50,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:50,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630385233] [2021-08-13 12:54:50,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:54:50,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:50,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:54:50,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:54:50,163 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:54:50,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 766 places, 1262 transitions, 255950 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:50,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:50,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:54:50,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:54:55,612 INFO L129 PetriNetUnfolder]: 245/4083 cut-off events. [2021-08-13 12:54:55,612 INFO L130 PetriNetUnfolder]: For 2504832/2707854 co-relation queries the response was YES. [2021-08-13 12:54:55,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135213 conditions, 4083 events. 245/4083 cut-off events. For 2504832/2707854 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62379 event pairs, 0 based on Foata normal form. 75/4036 useless extension candidates. Maximal degree in co-relation 109195. Up to 780 conditions per place. [2021-08-13 12:54:55,689 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 738 selfloop transitions, 241 changer transitions 262/1261 dead transitions. [2021-08-13 12:54:55,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 773 places, 1261 transitions, 258226 flow [2021-08-13 12:54:55,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:54:55,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:54:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:54:55,690 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:54:55,690 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:54:55,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:54:55,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:54:55,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:54:55,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:55,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:55,691 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:55,691 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 729 predicate places. [2021-08-13 12:54:55,691 INFO L482 AbstractCegarLoop]: Abstraction has has 773 places, 1261 transitions, 258226 flow [2021-08-13 12:54:55,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:55,691 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:54:55,691 INFO L266 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] [2021-08-13 12:54:55,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-08-13 12:54:55,692 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:54:55,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:54:55,692 INFO L82 PathProgramCache]: Analyzing trace with hash 953923129, now seen corresponding path program 104 times [2021-08-13 12:54:55,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:54:55,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334966279] [2021-08-13 12:54:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:54:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:54:55,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:55,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:54:55,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:55,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:54:55,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:54:55,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:54:55,711 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:54:55,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:54:55,720 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:54:55,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:54:55,732 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:54:55,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:54:55,748 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:54:55,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:54:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:54:55,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:54:55,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334966279] [2021-08-13 12:54:55,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334966279] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:54:55,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:54:55,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:54:55,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523383058] [2021-08-13 12:54:55,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:54:55,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:54:55,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:54:55,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:54:55,767 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:54:55,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 1261 transitions, 258226 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:54:55,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:54:55,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:54:55,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:55:01,256 INFO L129 PetriNetUnfolder]: 245/4080 cut-off events. [2021-08-13 12:55:01,257 INFO L130 PetriNetUnfolder]: For 2827285/3088156 co-relation queries the response was YES. [2021-08-13 12:55:01,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136346 conditions, 4080 events. 245/4080 cut-off events. For 2827285/3088156 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62361 event pairs, 0 based on Foata normal form. 88/4045 useless extension candidates. Maximal degree in co-relation 110193. Up to 779 conditions per place. [2021-08-13 12:55:01,378 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 736 selfloop transitions, 239 changer transitions 265/1260 dead transitions. [2021-08-13 12:55:01,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 1260 transitions, 260498 flow [2021-08-13 12:55:01,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:55:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:55:01,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:55:01,390 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:55:01,390 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:55:01,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:55:01,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:55:01,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:55:01,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:01,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:01,391 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:01,392 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 736 predicate places. [2021-08-13 12:55:01,392 INFO L482 AbstractCegarLoop]: Abstraction has has 780 places, 1260 transitions, 260498 flow [2021-08-13 12:55:01,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:01,392 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:55:01,392 INFO L266 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] [2021-08-13 12:55:01,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-08-13 12:55:01,392 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:55:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:55:01,392 INFO L82 PathProgramCache]: Analyzing trace with hash -750195291, now seen corresponding path program 105 times [2021-08-13 12:55:01,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:55:01,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276135725] [2021-08-13 12:55:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:55:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:55:01,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:01,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:55:01,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:01,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:55:01,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:01,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:55:01,432 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:55:01,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:55:01,442 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:55:01,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:55:01,473 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:55:01,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:55:01,492 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:55:01,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:55:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:55:01,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:55:01,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276135725] [2021-08-13 12:55:01,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276135725] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:55:01,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:55:01,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:55:01,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496774343] [2021-08-13 12:55:01,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:55:01,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:55:01,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:55:01,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:55:01,522 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:55:01,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 1260 transitions, 260498 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:01,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:55:01,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:55:01,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:55:07,654 INFO L129 PetriNetUnfolder]: 245/4081 cut-off events. [2021-08-13 12:55:07,654 INFO L130 PetriNetUnfolder]: For 2597863/2807337 co-relation queries the response was YES. [2021-08-13 12:55:07,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137485 conditions, 4081 events. 245/4081 cut-off events. For 2597863/2807337 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62337 event pairs, 0 based on Foata normal form. 73/4032 useless extension candidates. Maximal degree in co-relation 111199. Up to 778 conditions per place. [2021-08-13 12:55:07,771 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 733 selfloop transitions, 241 changer transitions 265/1259 dead transitions. [2021-08-13 12:55:07,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 787 places, 1259 transitions, 262766 flow [2021-08-13 12:55:07,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:55:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:55:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:55:07,772 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:55:07,772 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:55:07,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:55:07,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:55:07,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:55:07,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:07,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:07,774 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:07,774 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 743 predicate places. [2021-08-13 12:55:07,774 INFO L482 AbstractCegarLoop]: Abstraction has has 787 places, 1259 transitions, 262766 flow [2021-08-13 12:55:07,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:07,774 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:55:07,774 INFO L266 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] [2021-08-13 12:55:07,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-08-13 12:55:07,774 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:55:07,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:55:07,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1349013381, now seen corresponding path program 106 times [2021-08-13 12:55:07,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:55:07,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582831075] [2021-08-13 12:55:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:55:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:55:07,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:07,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:55:07,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:07,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:55:07,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:07,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:55:07,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:55:07,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:55:07,843 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:55:07,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:55:07,858 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:55:07,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:55:07,893 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:55:07,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:55:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:55:07,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:55:07,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582831075] [2021-08-13 12:55:07,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582831075] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:55:07,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:55:07,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:55:07,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082117937] [2021-08-13 12:55:07,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:55:07,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:55:07,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:55:07,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:55:07,927 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:55:07,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 787 places, 1259 transitions, 262766 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:07,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:55:07,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:55:07,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:55:13,683 INFO L129 PetriNetUnfolder]: 245/4080 cut-off events. [2021-08-13 12:55:13,683 INFO L130 PetriNetUnfolder]: For 2647653/2860359 co-relation queries the response was YES. [2021-08-13 12:55:13,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138618 conditions, 4080 events. 245/4080 cut-off events. For 2647653/2860359 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62282 event pairs, 0 based on Foata normal form. 73/4031 useless extension candidates. Maximal degree in co-relation 112201. Up to 777 conditions per place. [2021-08-13 12:55:13,767 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 736 selfloop transitions, 237 changer transitions 265/1258 dead transitions. [2021-08-13 12:55:13,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 794 places, 1258 transitions, 265030 flow [2021-08-13 12:55:13,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:55:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:55:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:55:13,768 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:55:13,768 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:55:13,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:55:13,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:55:13,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:55:13,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:13,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:13,769 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:13,769 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 750 predicate places. [2021-08-13 12:55:13,769 INFO L482 AbstractCegarLoop]: Abstraction has has 794 places, 1258 transitions, 265030 flow [2021-08-13 12:55:13,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:13,769 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:55:13,769 INFO L266 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] [2021-08-13 12:55:13,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-08-13 12:55:13,770 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:55:13,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:55:13,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1390549345, now seen corresponding path program 107 times [2021-08-13 12:55:13,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:55:13,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706518541] [2021-08-13 12:55:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:55:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:55:13,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:13,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:55:13,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:13,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:55:13,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:13,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:55:13,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:13,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:55:13,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:55:13,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:55:13,816 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:55:13,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:55:13,836 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:55:13,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:55:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:55:13,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:55:13,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706518541] [2021-08-13 12:55:13,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706518541] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:55:13,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:55:13,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:55:13,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603488819] [2021-08-13 12:55:13,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:55:13,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:55:13,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:55:13,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:55:13,855 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:55:13,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 794 places, 1258 transitions, 265030 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:13,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:55:13,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:55:13,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:55:19,295 INFO L129 PetriNetUnfolder]: 245/4077 cut-off events. [2021-08-13 12:55:19,295 INFO L130 PetriNetUnfolder]: For 2997226/3270559 co-relation queries the response was YES. [2021-08-13 12:55:19,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139745 conditions, 4077 events. 245/4077 cut-off events. For 2997226/3270559 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62364 event pairs, 0 based on Foata normal form. 88/4042 useless extension candidates. Maximal degree in co-relation 113199. Up to 776 conditions per place. [2021-08-13 12:55:19,379 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 735 selfloop transitions, 232 changer transitions 270/1257 dead transitions. [2021-08-13 12:55:19,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 801 places, 1257 transitions, 267290 flow [2021-08-13 12:55:19,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:55:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:55:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:55:19,380 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:55:19,380 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:55:19,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:55:19,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:55:19,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:55:19,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:19,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:19,381 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:19,381 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 757 predicate places. [2021-08-13 12:55:19,381 INFO L482 AbstractCegarLoop]: Abstraction has has 801 places, 1257 transitions, 267290 flow [2021-08-13 12:55:19,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:19,381 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:55:19,381 INFO L266 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] [2021-08-13 12:55:19,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-08-13 12:55:19,382 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:55:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:55:19,382 INFO L82 PathProgramCache]: Analyzing trace with hash -964170957, now seen corresponding path program 108 times [2021-08-13 12:55:19,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:55:19,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810039240] [2021-08-13 12:55:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:55:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:55:19,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:19,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:55:19,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:19,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:55:19,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:19,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:55:19,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:19,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:55:19,408 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 12:55:19,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:55:19,430 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:55:19,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:55:19,448 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:55:19,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:55:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:55:19,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:55:19,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810039240] [2021-08-13 12:55:19,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810039240] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:55:19,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:55:19,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:55:19,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655307764] [2021-08-13 12:55:19,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:55:19,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:55:19,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:55:19,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:55:19,468 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:55:19,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 1257 transitions, 267290 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:19,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:55:19,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:55:19,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:55:24,876 INFO L129 PetriNetUnfolder]: 245/4078 cut-off events. [2021-08-13 12:55:24,876 INFO L130 PetriNetUnfolder]: For 2754292/2973474 co-relation queries the response was YES. [2021-08-13 12:55:24,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140878 conditions, 4078 events. 245/4078 cut-off events. For 2754292/2973474 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62310 event pairs, 0 based on Foata normal form. 75/4031 useless extension candidates. Maximal degree in co-relation 114205. Up to 775 conditions per place. [2021-08-13 12:55:24,968 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 733 selfloop transitions, 231 changer transitions 272/1256 dead transitions. [2021-08-13 12:55:24,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 1256 transitions, 269546 flow [2021-08-13 12:55:24,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:55:24,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:55:24,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:55:24,969 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:55:24,969 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:55:24,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:55:24,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:55:24,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:55:24,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:24,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:24,970 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:24,970 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 764 predicate places. [2021-08-13 12:55:24,970 INFO L482 AbstractCegarLoop]: Abstraction has has 808 places, 1256 transitions, 269546 flow [2021-08-13 12:55:24,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:24,970 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:55:24,970 INFO L266 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] [2021-08-13 12:55:24,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-08-13 12:55:24,970 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:55:24,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:55:24,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1933658721, now seen corresponding path program 109 times [2021-08-13 12:55:24,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:55:24,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661426335] [2021-08-13 12:55:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:55:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:55:24,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:24,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:55:24,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:24,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:55:25,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:25,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:55:25,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:55:25,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:55:25,015 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:55:25,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:55:25,026 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:55:25,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:55:25,043 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:55:25,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:55:25,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:55:25,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:55:25,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661426335] [2021-08-13 12:55:25,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661426335] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:55:25,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:55:25,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:55:25,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459236187] [2021-08-13 12:55:25,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:55:25,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:55:25,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:55:25,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:55:25,066 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:55:25,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 1256 transitions, 269546 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:25,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:55:25,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:55:25,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:55:30,332 INFO L129 PetriNetUnfolder]: 245/4076 cut-off events. [2021-08-13 12:55:30,332 INFO L130 PetriNetUnfolder]: For 2805464/3027878 co-relation queries the response was YES. [2021-08-13 12:55:30,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142003 conditions, 4076 events. 245/4076 cut-off events. For 2805464/3027878 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62278 event pairs, 0 based on Foata normal form. 75/4029 useless extension candidates. Maximal degree in co-relation 115205. Up to 774 conditions per place. [2021-08-13 12:55:30,430 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 725 selfloop transitions, 236 changer transitions 274/1255 dead transitions. [2021-08-13 12:55:30,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 815 places, 1255 transitions, 271798 flow [2021-08-13 12:55:30,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:55:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:55:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:55:30,431 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:55:30,431 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:55:30,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:55:30,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:55:30,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:55:30,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:30,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:30,432 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:30,432 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 771 predicate places. [2021-08-13 12:55:30,432 INFO L482 AbstractCegarLoop]: Abstraction has has 815 places, 1255 transitions, 271798 flow [2021-08-13 12:55:30,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:30,432 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:55:30,433 INFO L266 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] [2021-08-13 12:55:30,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-08-13 12:55:30,433 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:55:30,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:55:30,433 INFO L82 PathProgramCache]: Analyzing trace with hash 116405423, now seen corresponding path program 110 times [2021-08-13 12:55:30,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:55:30,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068721105] [2021-08-13 12:55:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:55:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:55:30,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:30,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:55:30,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:30,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:55:30,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:30,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:55:30,495 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:55:30,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:55:30,504 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:55:30,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:55:30,516 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:55:30,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:55:30,533 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:55:30,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:55:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:55:30,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:55:30,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068721105] [2021-08-13 12:55:30,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068721105] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:55:30,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:55:30,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:55:30,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976496520] [2021-08-13 12:55:30,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:55:30,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:55:30,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:55:30,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:55:30,553 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:55:30,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 815 places, 1255 transitions, 271798 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:30,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:55:30,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:55:30,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:55:35,546 INFO L129 PetriNetUnfolder]: 245/4074 cut-off events. [2021-08-13 12:55:35,547 INFO L130 PetriNetUnfolder]: For 3131483/3415549 co-relation queries the response was YES. [2021-08-13 12:55:35,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143126 conditions, 4074 events. 245/4074 cut-off events. For 3131483/3415549 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62191 event pairs, 0 based on Foata normal form. 86/4037 useless extension candidates. Maximal degree in co-relation 116205. Up to 773 conditions per place. [2021-08-13 12:55:35,654 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 728 selfloop transitions, 232 changer transitions 274/1254 dead transitions. [2021-08-13 12:55:35,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1254 transitions, 274046 flow [2021-08-13 12:55:35,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:55:35,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:55:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:55:35,655 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:55:35,655 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:55:35,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:55:35,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:55:35,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:55:35,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:35,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:35,657 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:35,657 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 778 predicate places. [2021-08-13 12:55:35,657 INFO L482 AbstractCegarLoop]: Abstraction has has 822 places, 1254 transitions, 274046 flow [2021-08-13 12:55:35,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:35,657 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:55:35,657 INFO L266 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] [2021-08-13 12:55:35,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-08-13 12:55:35,657 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:55:35,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:55:35,658 INFO L82 PathProgramCache]: Analyzing trace with hash -396891409, now seen corresponding path program 111 times [2021-08-13 12:55:35,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:55:35,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482146795] [2021-08-13 12:55:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:55:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:55:35,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:35,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:55:35,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:35,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:55:35,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:35,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:55:35,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:35,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:55:35,690 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 12:55:35,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:55:35,717 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:55:35,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:55:35,740 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:55:35,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:55:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:55:35,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:55:35,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482146795] [2021-08-13 12:55:35,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482146795] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:55:35,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:55:35,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:55:35,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608549167] [2021-08-13 12:55:35,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:55:35,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:55:35,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:55:35,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:55:35,763 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:55:35,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 822 places, 1254 transitions, 274046 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:35,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:55:35,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:55:35,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:55:40,863 INFO L129 PetriNetUnfolder]: 245/4073 cut-off events. [2021-08-13 12:55:40,863 INFO L130 PetriNetUnfolder]: For 2902961/3131827 co-relation queries the response was YES. [2021-08-13 12:55:40,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144249 conditions, 4073 events. 245/4073 cut-off events. For 2902961/3131827 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 62170 event pairs, 0 based on Foata normal form. 73/4023 useless extension candidates. Maximal degree in co-relation 117207. Up to 772 conditions per place. [2021-08-13 12:55:40,948 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 721 selfloop transitions, 236 changer transitions 276/1253 dead transitions. [2021-08-13 12:55:40,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 829 places, 1253 transitions, 276290 flow [2021-08-13 12:55:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 12:55:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 12:55:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-08-13 12:55:40,949 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-08-13 12:55:40,949 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-08-13 12:55:40,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-08-13 12:55:40,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:55:40,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-08-13 12:55:40,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:40,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:40,950 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:40,950 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 785 predicate places. [2021-08-13 12:55:40,950 INFO L482 AbstractCegarLoop]: Abstraction has has 829 places, 1253 transitions, 276290 flow [2021-08-13 12:55:40,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:40,950 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:55:40,950 INFO L266 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] [2021-08-13 12:55:40,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-08-13 12:55:40,951 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:55:40,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:55:40,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1856890861, now seen corresponding path program 112 times [2021-08-13 12:55:40,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:55:40,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560852452] [2021-08-13 12:55:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:55:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:55:40,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:40,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:55:40,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:40,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:55:40,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:40,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:55:40,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:55:40,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:55:40,976 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-08-13 12:55:40,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:55:40,998 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 12:55:40,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 12:55:41,017 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-08-13 12:55:41,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 12:55:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:55:41,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:55:41,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560852452] [2021-08-13 12:55:41,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560852452] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:55:41,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:55:41,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 12:55:41,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399177330] [2021-08-13 12:55:41,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 12:55:41,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:55:41,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 12:55:41,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-13 12:55:41,036 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-08-13 12:55:41,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 829 places, 1253 transitions, 276290 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:55:41,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:55:41,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-08-13 12:55:41,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand