/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-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 07:55:33,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 07:55:33,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 07:55:33,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 07:55:33,639 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-CovSimpl.epf [2021-08-13 07:55:33,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 07:55:33,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 07:55:33,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 07:55:33,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 07:55:33,664 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 07:55:33,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 07:55:33,665 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 07:55:33,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 07:55:33,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 07:55:33,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 07:55:33,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 07:55:33,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 07:55:33,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 07:55:33,666 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 07:55:33,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 07:55:33,666 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 07:55:33,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 07:55:33,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 07:55:33,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 07:55:33,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 07:55:33,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 07:55:33,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 07:55:33,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 07:55:33,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 07:55:33,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 07:55:33,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 07:55:33,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 07:55:33,667 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 07:55:33,667 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 07:55:33,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 07:55:33,668 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 07:55:33,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 07:55:33,668 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 07:55:33,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 07:55:33,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 07:55:33,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 07:55:33,949 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 07:55:33,950 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 07:55:33,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl [2021-08-13 07:55:33,960 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl' [2021-08-13 07:55:33,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 07:55:33,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 07:55:33,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 07:55:33,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 07:55:33,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 07:55:33,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:55:33" (1/1) ... [2021-08-13 07:55:33,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:55:33" (1/1) ... [2021-08-13 07:55:33,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 07:55:33,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 07:55:33,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 07:55:33,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 07:55:34,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:55:33" (1/1) ... [2021-08-13 07:55:34,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:55:33" (1/1) ... [2021-08-13 07:55:34,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:55:33" (1/1) ... [2021-08-13 07:55:34,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:55:33" (1/1) ... [2021-08-13 07:55:34,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:55:33" (1/1) ... [2021-08-13 07:55:34,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:55:33" (1/1) ... [2021-08-13 07:55:34,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:55:33" (1/1) ... [2021-08-13 07:55:34,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 07:55:34,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 07:55:34,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 07:55:34,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 07:55:34,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:55:33" (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 07:55:34,052 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 07:55:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 07:55:34,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 07:55:34,053 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 07:55:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 07:55:34,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 07:55:34,053 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 07:55:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 07:55:34,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 07:55:34,054 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 07:55:34,175 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 07:55:34,175 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 07:55:34,176 INFO L202 PluginConnector]: Adding new model security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:55:34 BoogieIcfgContainer [2021-08-13 07:55:34,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 07:55:34,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 07:55:34,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 07:55:34,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 07:55:34,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:55:33" (1/2) ... [2021-08-13 07:55:34,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d56c9e and model type security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 07:55:34, skipping insertion in model container [2021-08-13 07:55:34,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:55:34" (2/2) ... [2021-08-13 07:55:34,181 INFO L111 eAbstractionObserver]: Analyzing ICFG security.wvr.bpl [2021-08-13 07:55:34,194 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 07:55:34,194 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 07:55:34,195 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 07:55:34,237 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-13 07:55:34,257 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-13 07:55:34,281 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 07:55:34,281 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 07:55:34,281 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 07:55:34,281 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 07:55:34,281 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 07:55:34,282 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 07:55:34,282 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 07:55:34,282 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 07:55:34,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 28 transitions, 72 flow [2021-08-13 07:55:34,316 INFO L129 PetriNetUnfolder]: 4/26 cut-off events. [2021-08-13 07:55:34,317 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-13 07:55:34,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 4/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2021-08-13 07:55:34,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 28 transitions, 72 flow [2021-08-13 07:55:34,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 24 transitions, 60 flow [2021-08-13 07:55:34,336 INFO L129 PetriNetUnfolder]: 4/23 cut-off events. [2021-08-13 07:55:34,337 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-13 07:55:34,337 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:34,338 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:34,338 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:34,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:34,345 INFO L82 PathProgramCache]: Analyzing trace with hash 105025108, now seen corresponding path program 1 times [2021-08-13 07:55:34,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:34,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283467112] [2021-08-13 07:55:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:34,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:34,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 07:55:34,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:34,457 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 07:55:34,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:34,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283467112] [2021-08-13 07:55:34,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283467112] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:34,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:34,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 07:55:34,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958145916] [2021-08-13 07:55:34,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 07:55:34,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:34,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 07:55:34,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 07:55:34,475 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 28 [2021-08-13 07:55:34,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:34,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 28 [2021-08-13 07:55:34,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:34,512 INFO L129 PetriNetUnfolder]: 3/31 cut-off events. [2021-08-13 07:55:34,512 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 07:55:34,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 31 events. 3/31 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2021-08-13 07:55:34,514 INFO L132 encePairwiseOnDemand]: 25/28 looper letters, 3 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2021-08-13 07:55:34,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 72 flow [2021-08-13 07:55:34,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 07:55:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 07:55:34,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2021-08-13 07:55:34,523 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2021-08-13 07:55:34,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2021-08-13 07:55:34,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2021-08-13 07:55:34,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:34,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2021-08-13 07:55:34,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,534 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2021-08-13 07:55:34,534 INFO L482 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 72 flow [2021-08-13 07:55:34,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,534 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:34,534 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:34,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 07:55:34,535 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:34,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:34,535 INFO L82 PathProgramCache]: Analyzing trace with hash -200844120, now seen corresponding path program 1 times [2021-08-13 07:55:34,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:34,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730551572] [2021-08-13 07:55:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:34,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:34,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 07:55:34,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:34,559 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 07:55:34,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:34,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730551572] [2021-08-13 07:55:34,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730551572] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:34,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:34,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 07:55:34,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829373265] [2021-08-13 07:55:34,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 07:55:34,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:34,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 07:55:34,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 07:55:34,570 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 28 [2021-08-13 07:55:34,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:34,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 28 [2021-08-13 07:55:34,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:34,599 INFO L129 PetriNetUnfolder]: 2/40 cut-off events. [2021-08-13 07:55:34,599 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-08-13 07:55:34,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 40 events. 2/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 5 conditions per place. [2021-08-13 07:55:34,600 INFO L132 encePairwiseOnDemand]: 25/28 looper letters, 3 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2021-08-13 07:55:34,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 84 flow [2021-08-13 07:55:34,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 07:55:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 07:55:34,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2021-08-13 07:55:34,602 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2021-08-13 07:55:34,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2021-08-13 07:55:34,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2021-08-13 07:55:34,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:34,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2021-08-13 07:55:34,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,604 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2021-08-13 07:55:34,605 INFO L482 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 84 flow [2021-08-13 07:55:34,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,605 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:34,605 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:34,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 07:55:34,605 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:34,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:34,605 INFO L82 PathProgramCache]: Analyzing trace with hash 531216121, now seen corresponding path program 1 times [2021-08-13 07:55:34,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:34,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104220458] [2021-08-13 07:55:34,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:34,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:34,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:34,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:34,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:34,664 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:34,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:34,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:34,674 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 07:55:34,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:34,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104220458] [2021-08-13 07:55:34,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104220458] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:34,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:34,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:55:34,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732665681] [2021-08-13 07:55:34,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 07:55:34,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:34,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 07:55:34,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 07:55:34,676 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 28 [2021-08-13 07:55:34,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 84 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:34,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 28 [2021-08-13 07:55:34,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:34,773 INFO L129 PetriNetUnfolder]: 24/112 cut-off events. [2021-08-13 07:55:34,773 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-08-13 07:55:34,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 112 events. 24/112 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 503 event pairs, 8 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 177. Up to 32 conditions per place. [2021-08-13 07:55:34,775 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 12 selfloop transitions, 5 changer transitions 1/37 dead transitions. [2021-08-13 07:55:34,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 142 flow [2021-08-13 07:55:34,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 07:55:34,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 07:55:34,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2021-08-13 07:55:34,776 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8273809523809523 [2021-08-13 07:55:34,776 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 139 transitions. [2021-08-13 07:55:34,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 139 transitions. [2021-08-13 07:55:34,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:34,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 139 transitions. [2021-08-13 07:55:34,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,778 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,779 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2021-08-13 07:55:34,779 INFO L482 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 142 flow [2021-08-13 07:55:34,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,779 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:34,779 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:34,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 07:55:34,779 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:34,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:34,780 INFO L82 PathProgramCache]: Analyzing trace with hash 350895681, now seen corresponding path program 2 times [2021-08-13 07:55:34,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:34,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455870652] [2021-08-13 07:55:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:34,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:34,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:34,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:34,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:34,843 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:34,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:34,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:34,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:34,861 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 07:55:34,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:34,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455870652] [2021-08-13 07:55:34,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455870652] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:34,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:34,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:55:34,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388964675] [2021-08-13 07:55:34,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 07:55:34,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:34,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 07:55:34,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 07:55:34,865 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 28 [2021-08-13 07:55:34,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:34,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 28 [2021-08-13 07:55:34,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:34,989 INFO L129 PetriNetUnfolder]: 26/119 cut-off events. [2021-08-13 07:55:34,990 INFO L130 PetriNetUnfolder]: For 43/51 co-relation queries the response was YES. [2021-08-13 07:55:34,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 119 events. 26/119 cut-off events. For 43/51 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 543 event pairs, 4 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 242. Up to 34 conditions per place. [2021-08-13 07:55:34,995 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 24 selfloop transitions, 12 changer transitions 2/57 dead transitions. [2021-08-13 07:55:34,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 298 flow [2021-08-13 07:55:34,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 07:55:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 07:55:34,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2021-08-13 07:55:34,998 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8273809523809523 [2021-08-13 07:55:34,998 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 139 transitions. [2021-08-13 07:55:34,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 139 transitions. [2021-08-13 07:55:34,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:34,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 139 transitions. [2021-08-13 07:55:34,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:34,999 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,000 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2021-08-13 07:55:35,000 INFO L482 AbstractCegarLoop]: Abstraction has has 41 places, 57 transitions, 298 flow [2021-08-13 07:55:35,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,000 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:35,000 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:35,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 07:55:35,000 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:35,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:35,001 INFO L82 PathProgramCache]: Analyzing trace with hash 867403959, now seen corresponding path program 3 times [2021-08-13 07:55:35,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:35,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677890197] [2021-08-13 07:55:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:35,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:35,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:35,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:35,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:35,054 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:35,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:35,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:35,068 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 07:55:35,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:35,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677890197] [2021-08-13 07:55:35,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677890197] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:35,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:35,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:55:35,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742718264] [2021-08-13 07:55:35,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 07:55:35,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:35,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 07:55:35,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 07:55:35,073 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 28 [2021-08-13 07:55:35,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 57 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:35,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 28 [2021-08-13 07:55:35,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:35,169 INFO L129 PetriNetUnfolder]: 29/140 cut-off events. [2021-08-13 07:55:35,169 INFO L130 PetriNetUnfolder]: For 122/146 co-relation queries the response was YES. [2021-08-13 07:55:35,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 140 events. 29/140 cut-off events. For 122/146 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 700 event pairs, 4 based on Foata normal form. 5/132 useless extension candidates. Maximal degree in co-relation 342. Up to 36 conditions per place. [2021-08-13 07:55:35,174 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 28 selfloop transitions, 16 changer transitions 3/66 dead transitions. [2021-08-13 07:55:35,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 66 transitions, 446 flow [2021-08-13 07:55:35,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 07:55:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 07:55:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2021-08-13 07:55:35,176 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2021-08-13 07:55:35,176 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 141 transitions. [2021-08-13 07:55:35,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 141 transitions. [2021-08-13 07:55:35,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:35,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 141 transitions. [2021-08-13 07:55:35,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,178 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,178 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2021-08-13 07:55:35,178 INFO L482 AbstractCegarLoop]: Abstraction has has 46 places, 66 transitions, 446 flow [2021-08-13 07:55:35,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,178 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:35,178 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:35,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 07:55:35,178 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:35,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:35,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1863657043, now seen corresponding path program 4 times [2021-08-13 07:55:35,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:35,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785926879] [2021-08-13 07:55:35,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:35,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:35,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:35,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:35,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:35,231 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:35,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:35,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:35,242 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 07:55:35,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:35,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785926879] [2021-08-13 07:55:35,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785926879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:35,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:35,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:55:35,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805756990] [2021-08-13 07:55:35,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 07:55:35,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:35,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 07:55:35,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 07:55:35,248 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 28 [2021-08-13 07:55:35,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 66 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:35,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 28 [2021-08-13 07:55:35,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:35,380 INFO L129 PetriNetUnfolder]: 29/135 cut-off events. [2021-08-13 07:55:35,380 INFO L130 PetriNetUnfolder]: For 186/204 co-relation queries the response was YES. [2021-08-13 07:55:35,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 135 events. 29/135 cut-off events. For 186/204 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 664 event pairs, 4 based on Foata normal form. 5/129 useless extension candidates. Maximal degree in co-relation 397. Up to 36 conditions per place. [2021-08-13 07:55:35,381 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 27 selfloop transitions, 15 changer transitions 4/65 dead transitions. [2021-08-13 07:55:35,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 530 flow [2021-08-13 07:55:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 07:55:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 07:55:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2021-08-13 07:55:35,383 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 07:55:35,383 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 140 transitions. [2021-08-13 07:55:35,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 140 transitions. [2021-08-13 07:55:35,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:35,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 140 transitions. [2021-08-13 07:55:35,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,387 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,387 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2021-08-13 07:55:35,387 INFO L482 AbstractCegarLoop]: Abstraction has has 51 places, 65 transitions, 530 flow [2021-08-13 07:55:35,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,387 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:35,388 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:35,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 07:55:35,388 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:35,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:35,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1546597894, now seen corresponding path program 1 times [2021-08-13 07:55:35,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:35,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600058510] [2021-08-13 07:55:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:35,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:35,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:35,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:35,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:35,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:35,454 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:35,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:35,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:35,462 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 07:55:35,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:35,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600058510] [2021-08-13 07:55:35,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600058510] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:35,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:35,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:35,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322901715] [2021-08-13 07:55:35,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:35,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:35,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:35,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:35,464 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:35,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 65 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:35,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:35,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:35,598 INFO L129 PetriNetUnfolder]: 44/217 cut-off events. [2021-08-13 07:55:35,599 INFO L130 PetriNetUnfolder]: For 481/481 co-relation queries the response was YES. [2021-08-13 07:55:35,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 217 events. 44/217 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1298 event pairs, 4 based on Foata normal form. 1/201 useless extension candidates. Maximal degree in co-relation 724. Up to 65 conditions per place. [2021-08-13 07:55:35,602 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 49 selfloop transitions, 21 changer transitions 8/96 dead transitions. [2021-08-13 07:55:35,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 96 transitions, 996 flow [2021-08-13 07:55:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:35,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:35,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2021-08-13 07:55:35,603 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8061224489795918 [2021-08-13 07:55:35,603 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 158 transitions. [2021-08-13 07:55:35,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 158 transitions. [2021-08-13 07:55:35,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:35,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 158 transitions. [2021-08-13 07:55:35,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,605 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,605 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2021-08-13 07:55:35,606 INFO L482 AbstractCegarLoop]: Abstraction has has 57 places, 96 transitions, 996 flow [2021-08-13 07:55:35,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,607 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:35,607 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:35,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 07:55:35,607 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:35,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:35,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1777947190, now seen corresponding path program 2 times [2021-08-13 07:55:35,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:35,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740392912] [2021-08-13 07:55:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:35,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:35,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:35,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:35,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:35,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:35,661 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:35,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:35,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:35,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:55:35,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:35,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740392912] [2021-08-13 07:55:35,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740392912] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:35,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:35,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:35,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806582797] [2021-08-13 07:55:35,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:35,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:35,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:35,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:35,672 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:35,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 96 transitions, 996 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:35,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:35,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:35,795 INFO L129 PetriNetUnfolder]: 44/233 cut-off events. [2021-08-13 07:55:35,795 INFO L130 PetriNetUnfolder]: For 727/729 co-relation queries the response was YES. [2021-08-13 07:55:35,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 233 events. 44/233 cut-off events. For 727/729 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1476 event pairs, 4 based on Foata normal form. 1/216 useless extension candidates. Maximal degree in co-relation 873. Up to 70 conditions per place. [2021-08-13 07:55:35,797 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 43 selfloop transitions, 27 changer transitions 15/103 dead transitions. [2021-08-13 07:55:35,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 1234 flow [2021-08-13 07:55:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:55:35,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:55:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2021-08-13 07:55:35,798 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7817460317460317 [2021-08-13 07:55:35,798 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 197 transitions. [2021-08-13 07:55:35,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 197 transitions. [2021-08-13 07:55:35,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:35,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 197 transitions. [2021-08-13 07:55:35,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.88888888888889) internal successors, (197), 9 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,799 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,800 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 38 predicate places. [2021-08-13 07:55:35,800 INFO L482 AbstractCegarLoop]: Abstraction has has 65 places, 103 transitions, 1234 flow [2021-08-13 07:55:35,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,800 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:35,800 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:35,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 07:55:35,800 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:35,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1016582296, now seen corresponding path program 3 times [2021-08-13 07:55:35,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:35,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743880330] [2021-08-13 07:55:35,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:35,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:35,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:35,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:35,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:35,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:35,845 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:35,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:35,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:35,854 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 07:55:35,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:35,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743880330] [2021-08-13 07:55:35,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743880330] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:35,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:35,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:35,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437847483] [2021-08-13 07:55:35,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:35,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:35,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:35,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:35,858 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:35,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 103 transitions, 1234 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:35,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:35,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:35,974 INFO L129 PetriNetUnfolder]: 44/237 cut-off events. [2021-08-13 07:55:35,974 INFO L130 PetriNetUnfolder]: For 1086/1092 co-relation queries the response was YES. [2021-08-13 07:55:35,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 237 events. 44/237 cut-off events. For 1086/1092 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1522 event pairs, 0 based on Foata normal form. 3/220 useless extension candidates. Maximal degree in co-relation 997. Up to 71 conditions per place. [2021-08-13 07:55:35,976 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 57 selfloop transitions, 28 changer transitions 16/119 dead transitions. [2021-08-13 07:55:35,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 119 transitions, 1660 flow [2021-08-13 07:55:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2021-08-13 07:55:35,978 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-08-13 07:55:35,978 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 154 transitions. [2021-08-13 07:55:35,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 154 transitions. [2021-08-13 07:55:35,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:35,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 154 transitions. [2021-08-13 07:55:35,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,979 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,979 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 44 predicate places. [2021-08-13 07:55:35,980 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 119 transitions, 1660 flow [2021-08-13 07:55:35,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:35,980 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:35,980 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:35,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 07:55:35,980 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:35,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:35,980 INFO L82 PathProgramCache]: Analyzing trace with hash 579936892, now seen corresponding path program 4 times [2021-08-13 07:55:35,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:35,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475754900] [2021-08-13 07:55:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:35,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:35,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:35,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:35,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:36,019 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:36,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:36,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:36,029 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 07:55:36,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:36,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475754900] [2021-08-13 07:55:36,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475754900] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:36,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:36,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:36,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535465792] [2021-08-13 07:55:36,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:36,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:36,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:36,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:36,031 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:36,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 119 transitions, 1660 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:36,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:36,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:36,150 INFO L129 PetriNetUnfolder]: 43/240 cut-off events. [2021-08-13 07:55:36,150 INFO L130 PetriNetUnfolder]: For 1424/1428 co-relation queries the response was YES. [2021-08-13 07:55:36,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 240 events. 43/240 cut-off events. For 1424/1428 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1559 event pairs, 0 based on Foata normal form. 3/223 useless extension candidates. Maximal degree in co-relation 1114. Up to 71 conditions per place. [2021-08-13 07:55:36,152 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 58 selfloop transitions, 24 changer transitions 20/120 dead transitions. [2021-08-13 07:55:36,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 120 transitions, 1880 flow [2021-08-13 07:55:36,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:36,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2021-08-13 07:55:36,153 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8061224489795918 [2021-08-13 07:55:36,153 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 158 transitions. [2021-08-13 07:55:36,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 158 transitions. [2021-08-13 07:55:36,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:36,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 158 transitions. [2021-08-13 07:55:36,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,154 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,155 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 50 predicate places. [2021-08-13 07:55:36,155 INFO L482 AbstractCegarLoop]: Abstraction has has 77 places, 120 transitions, 1880 flow [2021-08-13 07:55:36,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,155 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:36,155 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:36,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 07:55:36,155 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:36,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:36,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1176319769, now seen corresponding path program 5 times [2021-08-13 07:55:36,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:36,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665439297] [2021-08-13 07:55:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:36,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:36,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:36,210 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:36,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:36,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:36,218 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 07:55:36,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:36,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665439297] [2021-08-13 07:55:36,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665439297] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:36,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:36,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:55:36,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122634918] [2021-08-13 07:55:36,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 07:55:36,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:36,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 07:55:36,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 07:55:36,219 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 28 [2021-08-13 07:55:36,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 120 transitions, 1880 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:36,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 28 [2021-08-13 07:55:36,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:36,294 INFO L129 PetriNetUnfolder]: 42/242 cut-off events. [2021-08-13 07:55:36,294 INFO L130 PetriNetUnfolder]: For 1831/1833 co-relation queries the response was YES. [2021-08-13 07:55:36,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 242 events. 42/242 cut-off events. For 1831/1833 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1594 event pairs, 0 based on Foata normal form. 1/223 useless extension candidates. Maximal degree in co-relation 1218. Up to 71 conditions per place. [2021-08-13 07:55:36,295 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 59 selfloop transitions, 20 changer transitions 21/120 dead transitions. [2021-08-13 07:55:36,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 120 transitions, 2078 flow [2021-08-13 07:55:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 07:55:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 07:55:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2021-08-13 07:55:36,296 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2021-08-13 07:55:36,296 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 141 transitions. [2021-08-13 07:55:36,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 141 transitions. [2021-08-13 07:55:36,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:36,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 141 transitions. [2021-08-13 07:55:36,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,297 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,298 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 55 predicate places. [2021-08-13 07:55:36,298 INFO L482 AbstractCegarLoop]: Abstraction has has 82 places, 120 transitions, 2078 flow [2021-08-13 07:55:36,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,298 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:36,298 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:36,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 07:55:36,298 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:36,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:36,298 INFO L82 PathProgramCache]: Analyzing trace with hash -715816598, now seen corresponding path program 5 times [2021-08-13 07:55:36,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:36,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603342427] [2021-08-13 07:55:36,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:36,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:36,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:36,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:36,334 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:36,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:36,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:36,343 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 07:55:36,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:36,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603342427] [2021-08-13 07:55:36,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603342427] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:36,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:36,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:36,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424002312] [2021-08-13 07:55:36,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:36,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:36,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:36,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:36,344 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:36,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 120 transitions, 2078 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:36,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:36,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:36,443 INFO L129 PetriNetUnfolder]: 41/243 cut-off events. [2021-08-13 07:55:36,443 INFO L130 PetriNetUnfolder]: For 2223/2227 co-relation queries the response was YES. [2021-08-13 07:55:36,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 243 events. 41/243 cut-off events. For 2223/2227 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1626 event pairs, 0 based on Foata normal form. 3/226 useless extension candidates. Maximal degree in co-relation 1338. Up to 71 conditions per place. [2021-08-13 07:55:36,445 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 53 selfloop transitions, 21 changer transitions 28/120 dead transitions. [2021-08-13 07:55:36,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 120 transitions, 2282 flow [2021-08-13 07:55:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2021-08-13 07:55:36,446 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7959183673469388 [2021-08-13 07:55:36,446 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 156 transitions. [2021-08-13 07:55:36,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 156 transitions. [2021-08-13 07:55:36,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:36,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 156 transitions. [2021-08-13 07:55:36,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,447 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,447 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 61 predicate places. [2021-08-13 07:55:36,447 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 120 transitions, 2282 flow [2021-08-13 07:55:36,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,448 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:36,448 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:36,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 07:55:36,448 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:36,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:36,448 INFO L82 PathProgramCache]: Analyzing trace with hash 2122394443, now seen corresponding path program 6 times [2021-08-13 07:55:36,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:36,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568904348] [2021-08-13 07:55:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:36,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:36,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:36,476 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:36,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:36,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:36,484 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 07:55:36,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:36,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568904348] [2021-08-13 07:55:36,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568904348] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:36,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:36,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:55:36,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967055333] [2021-08-13 07:55:36,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 07:55:36,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:36,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 07:55:36,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 07:55:36,485 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 28 [2021-08-13 07:55:36,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 120 transitions, 2282 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:36,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 28 [2021-08-13 07:55:36,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:36,570 INFO L129 PetriNetUnfolder]: 41/241 cut-off events. [2021-08-13 07:55:36,570 INFO L130 PetriNetUnfolder]: For 2662/2664 co-relation queries the response was YES. [2021-08-13 07:55:36,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1556 conditions, 241 events. 41/241 cut-off events. For 2662/2664 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1621 event pairs, 0 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 1442. Up to 71 conditions per place. [2021-08-13 07:55:36,572 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 54 selfloop transitions, 15 changer transitions 30/119 dead transitions. [2021-08-13 07:55:36,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 119 transitions, 2456 flow [2021-08-13 07:55:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 07:55:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 07:55:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2021-08-13 07:55:36,573 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 07:55:36,573 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 140 transitions. [2021-08-13 07:55:36,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 140 transitions. [2021-08-13 07:55:36,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:36,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 140 transitions. [2021-08-13 07:55:36,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,574 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,574 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 66 predicate places. [2021-08-13 07:55:36,574 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 119 transitions, 2456 flow [2021-08-13 07:55:36,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,574 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:36,574 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:36,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 07:55:36,574 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:36,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1051096864, now seen corresponding path program 6 times [2021-08-13 07:55:36,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:36,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924518539] [2021-08-13 07:55:36,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:36,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:36,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:36,606 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:36,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:36,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:36,615 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 07:55:36,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:36,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924518539] [2021-08-13 07:55:36,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924518539] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:36,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:36,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:36,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799878197] [2021-08-13 07:55:36,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:36,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:36,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:36,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:36,616 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:36,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 119 transitions, 2456 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:36,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:36,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:36,744 INFO L129 PetriNetUnfolder]: 40/260 cut-off events. [2021-08-13 07:55:36,744 INFO L130 PetriNetUnfolder]: For 3179/3183 co-relation queries the response was YES. [2021-08-13 07:55:36,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 260 events. 40/260 cut-off events. For 3179/3183 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1844 event pairs, 0 based on Foata normal form. 3/243 useless extension candidates. Maximal degree in co-relation 1652. Up to 81 conditions per place. [2021-08-13 07:55:36,746 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 47 selfloop transitions, 26 changer transitions 35/126 dead transitions. [2021-08-13 07:55:36,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 126 transitions, 2840 flow [2021-08-13 07:55:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2021-08-13 07:55:36,747 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7959183673469388 [2021-08-13 07:55:36,747 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 156 transitions. [2021-08-13 07:55:36,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 156 transitions. [2021-08-13 07:55:36,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:36,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 156 transitions. [2021-08-13 07:55:36,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,749 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,749 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 72 predicate places. [2021-08-13 07:55:36,749 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 126 transitions, 2840 flow [2021-08-13 07:55:36,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,749 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:36,749 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:36,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 07:55:36,749 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:36,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:36,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1953488612, now seen corresponding path program 7 times [2021-08-13 07:55:36,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:36,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11516531] [2021-08-13 07:55:36,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:36,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:36,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:36,804 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:36,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:36,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:36,812 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 07:55:36,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:36,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11516531] [2021-08-13 07:55:36,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11516531] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:36,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:36,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:36,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534477577] [2021-08-13 07:55:36,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:36,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:36,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:36,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:36,813 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:36,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 126 transitions, 2840 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:36,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:36,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:36,910 INFO L129 PetriNetUnfolder]: 40/258 cut-off events. [2021-08-13 07:55:36,910 INFO L130 PetriNetUnfolder]: For 3657/3661 co-relation queries the response was YES. [2021-08-13 07:55:36,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 258 events. 40/258 cut-off events. For 3657/3661 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1821 event pairs, 0 based on Foata normal form. 3/241 useless extension candidates. Maximal degree in co-relation 1768. Up to 81 conditions per place. [2021-08-13 07:55:36,912 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 48 selfloop transitions, 22 changer transitions 37/125 dead transitions. [2021-08-13 07:55:36,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 125 transitions, 3028 flow [2021-08-13 07:55:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:36,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2021-08-13 07:55:36,913 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7908163265306123 [2021-08-13 07:55:36,913 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 155 transitions. [2021-08-13 07:55:36,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 155 transitions. [2021-08-13 07:55:36,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:36,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 155 transitions. [2021-08-13 07:55:36,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,914 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,914 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 78 predicate places. [2021-08-13 07:55:36,914 INFO L482 AbstractCegarLoop]: Abstraction has has 105 places, 125 transitions, 3028 flow [2021-08-13 07:55:36,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,914 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:36,915 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:36,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 07:55:36,915 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:36,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:36,915 INFO L82 PathProgramCache]: Analyzing trace with hash 942345654, now seen corresponding path program 8 times [2021-08-13 07:55:36,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:36,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960019880] [2021-08-13 07:55:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:36,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:36,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:36,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:36,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:36,952 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:36,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:36,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:36,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:36,961 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 07:55:36,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:36,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960019880] [2021-08-13 07:55:36,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960019880] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:36,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:36,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:36,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875036667] [2021-08-13 07:55:36,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:36,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:36,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:36,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:36,964 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:36,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 125 transitions, 3028 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:36,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:36,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:36,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:37,107 INFO L129 PetriNetUnfolder]: 39/263 cut-off events. [2021-08-13 07:55:37,107 INFO L130 PetriNetUnfolder]: For 4251/4255 co-relation queries the response was YES. [2021-08-13 07:55:37,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2026 conditions, 263 events. 39/263 cut-off events. For 4251/4255 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1890 event pairs, 0 based on Foata normal form. 1/244 useless extension candidates. Maximal degree in co-relation 1903. Up to 82 conditions per place. [2021-08-13 07:55:37,109 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 36 selfloop transitions, 28 changer transitions 44/126 dead transitions. [2021-08-13 07:55:37,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 126 transitions, 3272 flow [2021-08-13 07:55:37,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2021-08-13 07:55:37,110 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8112244897959183 [2021-08-13 07:55:37,110 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 159 transitions. [2021-08-13 07:55:37,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 159 transitions. [2021-08-13 07:55:37,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:37,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 159 transitions. [2021-08-13 07:55:37,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,111 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,112 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 84 predicate places. [2021-08-13 07:55:37,112 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 126 transitions, 3272 flow [2021-08-13 07:55:37,112 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,112 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:37,112 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:37,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 07:55:37,112 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:37,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1289656718, now seen corresponding path program 9 times [2021-08-13 07:55:37,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:37,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639192616] [2021-08-13 07:55:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:37,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:37,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:37,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:37,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:37,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:37,155 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:37,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:37,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:37,164 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 07:55:37,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:37,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639192616] [2021-08-13 07:55:37,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639192616] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:37,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:37,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:37,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564654061] [2021-08-13 07:55:37,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:37,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:37,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:37,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:37,165 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:37,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 126 transitions, 3272 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:37,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:37,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:37,334 INFO L129 PetriNetUnfolder]: 37/265 cut-off events. [2021-08-13 07:55:37,335 INFO L130 PetriNetUnfolder]: For 4454/4462 co-relation queries the response was YES. [2021-08-13 07:55:37,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2162 conditions, 265 events. 37/265 cut-off events. For 4454/4462 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1952 event pairs, 0 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 2031. Up to 83 conditions per place. [2021-08-13 07:55:37,336 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 31 selfloop transitions, 31 changer transitions 47/127 dead transitions. [2021-08-13 07:55:37,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 127 transitions, 3520 flow [2021-08-13 07:55:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:55:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:55:37,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2021-08-13 07:55:37,338 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7928571428571428 [2021-08-13 07:55:37,338 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 222 transitions. [2021-08-13 07:55:37,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 222 transitions. [2021-08-13 07:55:37,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:37,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 222 transitions. [2021-08-13 07:55:37,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 22.2) internal successors, (222), 10 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,339 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,339 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 93 predicate places. [2021-08-13 07:55:37,339 INFO L482 AbstractCegarLoop]: Abstraction has has 120 places, 127 transitions, 3520 flow [2021-08-13 07:55:37,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,339 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:37,339 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:37,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 07:55:37,340 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:37,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:37,340 INFO L82 PathProgramCache]: Analyzing trace with hash 244156918, now seen corresponding path program 10 times [2021-08-13 07:55:37,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:37,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274600130] [2021-08-13 07:55:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:37,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:37,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:37,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:37,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:37,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:37,372 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:37,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:37,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:37,380 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 07:55:37,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:37,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274600130] [2021-08-13 07:55:37,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274600130] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:37,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:37,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:37,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323869700] [2021-08-13 07:55:37,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:37,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:37,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:37,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:37,381 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:37,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 127 transitions, 3520 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:37,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:37,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:37,539 INFO L129 PetriNetUnfolder]: 37/263 cut-off events. [2021-08-13 07:55:37,539 INFO L130 PetriNetUnfolder]: For 4962/4974 co-relation queries the response was YES. [2021-08-13 07:55:37,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 263 events. 37/263 cut-off events. For 4962/4974 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1933 event pairs, 0 based on Foata normal form. 1/246 useless extension candidates. Maximal degree in co-relation 2149. Up to 82 conditions per place. [2021-08-13 07:55:37,541 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 27 selfloop transitions, 33 changer transitions 48/126 dead transitions. [2021-08-13 07:55:37,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 126 transitions, 3704 flow [2021-08-13 07:55:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:55:37,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:55:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2021-08-13 07:55:37,542 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7892857142857143 [2021-08-13 07:55:37,543 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 221 transitions. [2021-08-13 07:55:37,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 221 transitions. [2021-08-13 07:55:37,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:37,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 221 transitions. [2021-08-13 07:55:37,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,544 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,544 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 102 predicate places. [2021-08-13 07:55:37,544 INFO L482 AbstractCegarLoop]: Abstraction has has 129 places, 126 transitions, 3704 flow [2021-08-13 07:55:37,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,544 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:37,544 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:37,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 07:55:37,545 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:37,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:37,545 INFO L82 PathProgramCache]: Analyzing trace with hash -108459350, now seen corresponding path program 1 times [2021-08-13 07:55:37,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:37,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660453416] [2021-08-13 07:55:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:37,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:37,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:37,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:37,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:37,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:37,577 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:37,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:37,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:55:37,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:37,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660453416] [2021-08-13 07:55:37,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660453416] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:37,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:37,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:37,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879468789] [2021-08-13 07:55:37,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:37,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:37,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:37,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:37,612 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:37,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 126 transitions, 3704 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:37,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:37,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:37,708 INFO L129 PetriNetUnfolder]: 42/292 cut-off events. [2021-08-13 07:55:37,708 INFO L130 PetriNetUnfolder]: For 7433/7446 co-relation queries the response was YES. [2021-08-13 07:55:37,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2550 conditions, 292 events. 42/292 cut-off events. For 7433/7446 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2195 event pairs, 0 based on Foata normal form. 2/272 useless extension candidates. Maximal degree in co-relation 2428. Up to 89 conditions per place. [2021-08-13 07:55:37,710 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 54 selfloop transitions, 21 changer transitions 49/143 dead transitions. [2021-08-13 07:55:37,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 143 transitions, 4528 flow [2021-08-13 07:55:37,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:37,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2021-08-13 07:55:37,711 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-08-13 07:55:37,711 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 154 transitions. [2021-08-13 07:55:37,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 154 transitions. [2021-08-13 07:55:37,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:37,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 154 transitions. [2021-08-13 07:55:37,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,712 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 108 predicate places. [2021-08-13 07:55:37,712 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 143 transitions, 4528 flow [2021-08-13 07:55:37,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,712 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:37,712 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:37,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 07:55:37,712 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:37,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:37,713 INFO L82 PathProgramCache]: Analyzing trace with hash -905153398, now seen corresponding path program 2 times [2021-08-13 07:55:37,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:37,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542997478] [2021-08-13 07:55:37,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:37,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:37,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:37,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:37,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:37,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:37,746 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:37,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:37,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:37,753 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 07:55:37,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:37,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542997478] [2021-08-13 07:55:37,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542997478] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:37,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:37,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:37,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371065722] [2021-08-13 07:55:37,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:37,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:37,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:37,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:37,754 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:37,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 143 transitions, 4528 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:37,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:37,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:37,856 INFO L129 PetriNetUnfolder]: 43/308 cut-off events. [2021-08-13 07:55:37,856 INFO L130 PetriNetUnfolder]: For 8656/8688 co-relation queries the response was YES. [2021-08-13 07:55:37,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2825 conditions, 308 events. 43/308 cut-off events. For 8656/8688 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2352 event pairs, 0 based on Foata normal form. 9/295 useless extension candidates. Maximal degree in co-relation 2676. Up to 96 conditions per place. [2021-08-13 07:55:37,858 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 57 selfloop transitions, 24 changer transitions 50/150 dead transitions. [2021-08-13 07:55:37,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 150 transitions, 5040 flow [2021-08-13 07:55:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:37,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2021-08-13 07:55:37,859 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7959183673469388 [2021-08-13 07:55:37,859 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 156 transitions. [2021-08-13 07:55:37,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 156 transitions. [2021-08-13 07:55:37,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:37,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 156 transitions. [2021-08-13 07:55:37,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,860 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,860 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 114 predicate places. [2021-08-13 07:55:37,860 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 150 transitions, 5040 flow [2021-08-13 07:55:37,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,861 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:37,861 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:37,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 07:55:37,861 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:37,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:37,861 INFO L82 PathProgramCache]: Analyzing trace with hash 2063755170, now seen corresponding path program 3 times [2021-08-13 07:55:37,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:37,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655903730] [2021-08-13 07:55:37,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:37,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:37,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:37,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:37,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:37,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:37,896 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:37,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:37,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:37,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:37,905 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 07:55:37,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:37,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655903730] [2021-08-13 07:55:37,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655903730] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:37,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:37,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:37,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979874430] [2021-08-13 07:55:37,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:37,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:37,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:37,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:37,906 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:37,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 150 transitions, 5040 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:37,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:37,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:37,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:38,049 INFO L129 PetriNetUnfolder]: 43/318 cut-off events. [2021-08-13 07:55:38,049 INFO L130 PetriNetUnfolder]: For 9408/9425 co-relation queries the response was YES. [2021-08-13 07:55:38,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3067 conditions, 318 events. 43/318 cut-off events. For 9408/9425 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2484 event pairs, 0 based on Foata normal form. 1/296 useless extension candidates. Maximal degree in co-relation 2910. Up to 99 conditions per place. [2021-08-13 07:55:38,051 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 56 selfloop transitions, 25 changer transitions 57/157 dead transitions. [2021-08-13 07:55:38,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 157 transitions, 5516 flow [2021-08-13 07:55:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:55:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:55:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2021-08-13 07:55:38,052 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7817460317460317 [2021-08-13 07:55:38,052 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 197 transitions. [2021-08-13 07:55:38,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 197 transitions. [2021-08-13 07:55:38,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:38,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 197 transitions. [2021-08-13 07:55:38,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.88888888888889) internal successors, (197), 9 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,053 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,053 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 122 predicate places. [2021-08-13 07:55:38,054 INFO L482 AbstractCegarLoop]: Abstraction has has 149 places, 157 transitions, 5516 flow [2021-08-13 07:55:38,054 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,054 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:38,054 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:38,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 07:55:38,054 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:38,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:38,054 INFO L82 PathProgramCache]: Analyzing trace with hash -547968762, now seen corresponding path program 4 times [2021-08-13 07:55:38,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:38,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064798908] [2021-08-13 07:55:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:38,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:38,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:38,112 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:38,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:38,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:38,121 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 07:55:38,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:38,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064798908] [2021-08-13 07:55:38,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064798908] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:38,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:38,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:38,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313147034] [2021-08-13 07:55:38,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:38,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:38,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:38,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:38,123 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:38,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 157 transitions, 5516 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:38,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:38,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:38,233 INFO L129 PetriNetUnfolder]: 43/319 cut-off events. [2021-08-13 07:55:38,233 INFO L130 PetriNetUnfolder]: For 10586/10622 co-relation queries the response was YES. [2021-08-13 07:55:38,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3190 conditions, 319 events. 43/319 cut-off events. For 10586/10622 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2505 event pairs, 0 based on Foata normal form. 5/301 useless extension candidates. Maximal degree in co-relation 3051. Up to 98 conditions per place. [2021-08-13 07:55:38,236 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 51 selfloop transitions, 23 changer transitions 63/156 dead transitions. [2021-08-13 07:55:38,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 156 transitions, 5748 flow [2021-08-13 07:55:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2021-08-13 07:55:38,237 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7908163265306123 [2021-08-13 07:55:38,237 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 155 transitions. [2021-08-13 07:55:38,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 155 transitions. [2021-08-13 07:55:38,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:38,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 155 transitions. [2021-08-13 07:55:38,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,238 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,238 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 128 predicate places. [2021-08-13 07:55:38,238 INFO L482 AbstractCegarLoop]: Abstraction has has 155 places, 156 transitions, 5748 flow [2021-08-13 07:55:38,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,238 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:38,238 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:38,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 07:55:38,238 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:38,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:38,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1667908086, now seen corresponding path program 5 times [2021-08-13 07:55:38,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:38,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080410048] [2021-08-13 07:55:38,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:38,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:38,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:38,272 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:38,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:38,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:38,281 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 07:55:38,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:38,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080410048] [2021-08-13 07:55:38,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080410048] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:38,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:38,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:38,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512254574] [2021-08-13 07:55:38,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:38,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:38,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:38,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:38,282 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:38,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 156 transitions, 5748 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:38,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:38,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:38,407 INFO L129 PetriNetUnfolder]: 52/384 cut-off events. [2021-08-13 07:55:38,408 INFO L130 PetriNetUnfolder]: For 13461/13493 co-relation queries the response was YES. [2021-08-13 07:55:38,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4025 conditions, 384 events. 52/384 cut-off events. For 13461/13493 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3193 event pairs, 0 based on Foata normal form. 5/363 useless extension candidates. Maximal degree in co-relation 3846. Up to 119 conditions per place. [2021-08-13 07:55:38,410 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 67 selfloop transitions, 27 changer transitions 72/185 dead transitions. [2021-08-13 07:55:38,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 185 transitions, 7296 flow [2021-08-13 07:55:38,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:38,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:38,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2021-08-13 07:55:38,411 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8010204081632653 [2021-08-13 07:55:38,411 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 157 transitions. [2021-08-13 07:55:38,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 157 transitions. [2021-08-13 07:55:38,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:38,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 157 transitions. [2021-08-13 07:55:38,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,412 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,412 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 134 predicate places. [2021-08-13 07:55:38,412 INFO L482 AbstractCegarLoop]: Abstraction has has 161 places, 185 transitions, 7296 flow [2021-08-13 07:55:38,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,412 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:38,412 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:38,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 07:55:38,413 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:38,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:38,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1105494758, now seen corresponding path program 6 times [2021-08-13 07:55:38,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:38,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968051234] [2021-08-13 07:55:38,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:38,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:38,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:38,443 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:38,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:38,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:38,451 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 07:55:38,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:38,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968051234] [2021-08-13 07:55:38,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968051234] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:38,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:38,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:38,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767073733] [2021-08-13 07:55:38,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:38,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:38,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:38,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:38,452 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:38,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 185 transitions, 7296 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:38,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:38,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:38,576 INFO L129 PetriNetUnfolder]: 50/393 cut-off events. [2021-08-13 07:55:38,577 INFO L130 PetriNetUnfolder]: For 14524/14546 co-relation queries the response was YES. [2021-08-13 07:55:38,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4251 conditions, 393 events. 50/393 cut-off events. For 14524/14546 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3311 event pairs, 0 based on Foata normal form. 6/373 useless extension candidates. Maximal degree in co-relation 4064. Up to 120 conditions per place. [2021-08-13 07:55:38,579 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 67 selfloop transitions, 24 changer transitions 77/187 dead transitions. [2021-08-13 07:55:38,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 187 transitions, 7718 flow [2021-08-13 07:55:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:38,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2021-08-13 07:55:38,580 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8010204081632653 [2021-08-13 07:55:38,580 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 157 transitions. [2021-08-13 07:55:38,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 157 transitions. [2021-08-13 07:55:38,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:38,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 157 transitions. [2021-08-13 07:55:38,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,581 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,581 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 140 predicate places. [2021-08-13 07:55:38,581 INFO L482 AbstractCegarLoop]: Abstraction has has 167 places, 187 transitions, 7718 flow [2021-08-13 07:55:38,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,581 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:38,581 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:38,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 07:55:38,581 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:38,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:38,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1026750154, now seen corresponding path program 7 times [2021-08-13 07:55:38,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:38,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376415595] [2021-08-13 07:55:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:38,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:38,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:38,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:38,612 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:38,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:38,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:38,620 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 07:55:38,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:38,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376415595] [2021-08-13 07:55:38,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376415595] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:38,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:38,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:38,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838479417] [2021-08-13 07:55:38,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:38,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:38,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:38,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:38,622 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:38,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 187 transitions, 7718 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:38,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:38,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:38,759 INFO L129 PetriNetUnfolder]: 49/390 cut-off events. [2021-08-13 07:55:38,759 INFO L130 PetriNetUnfolder]: For 14486/14508 co-relation queries the response was YES. [2021-08-13 07:55:38,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 390 events. 49/390 cut-off events. For 14486/14508 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3292 event pairs, 0 based on Foata normal form. 6/372 useless extension candidates. Maximal degree in co-relation 4246. Up to 120 conditions per place. [2021-08-13 07:55:38,761 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 67 selfloop transitions, 18 changer transitions 83/187 dead transitions. [2021-08-13 07:55:38,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 187 transitions, 8052 flow [2021-08-13 07:55:38,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:38,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:38,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2021-08-13 07:55:38,762 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7908163265306123 [2021-08-13 07:55:38,762 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 155 transitions. [2021-08-13 07:55:38,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 155 transitions. [2021-08-13 07:55:38,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:38,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 155 transitions. [2021-08-13 07:55:38,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,763 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,763 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 146 predicate places. [2021-08-13 07:55:38,763 INFO L482 AbstractCegarLoop]: Abstraction has has 173 places, 187 transitions, 8052 flow [2021-08-13 07:55:38,763 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,763 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:38,763 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:38,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 07:55:38,763 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:38,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:38,764 INFO L82 PathProgramCache]: Analyzing trace with hash -133322965, now seen corresponding path program 1 times [2021-08-13 07:55:38,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:38,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355048216] [2021-08-13 07:55:38,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:38,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:38,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:38,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:38,800 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:38,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:38,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:38,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:38,809 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 07:55:38,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:38,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355048216] [2021-08-13 07:55:38,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355048216] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:38,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:38,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:38,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069031933] [2021-08-13 07:55:38,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:38,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:38,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:38,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:38,810 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:38,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 187 transitions, 8052 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:38,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:38,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:38,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:39,013 INFO L129 PetriNetUnfolder]: 76/691 cut-off events. [2021-08-13 07:55:39,013 INFO L130 PetriNetUnfolder]: For 25947/26008 co-relation queries the response was YES. [2021-08-13 07:55:39,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8061 conditions, 691 events. 76/691 cut-off events. For 25947/26008 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7035 event pairs, 0 based on Foata normal form. 11/662 useless extension candidates. Maximal degree in co-relation 7740. Up to 220 conditions per place. [2021-08-13 07:55:39,017 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 125 selfloop transitions, 28 changer transitions 145/315 dead transitions. [2021-08-13 07:55:39,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 315 transitions, 14766 flow [2021-08-13 07:55:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:55:39,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:55:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2021-08-13 07:55:39,018 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7946428571428571 [2021-08-13 07:55:39,018 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 178 transitions. [2021-08-13 07:55:39,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 178 transitions. [2021-08-13 07:55:39,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:39,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 178 transitions. [2021-08-13 07:55:39,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:39,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:39,019 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:39,019 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 153 predicate places. [2021-08-13 07:55:39,019 INFO L482 AbstractCegarLoop]: Abstraction has has 180 places, 315 transitions, 14766 flow [2021-08-13 07:55:39,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:39,020 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:39,020 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:39,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 07:55:39,020 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:39,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:39,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2024230005, now seen corresponding path program 2 times [2021-08-13 07:55:39,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:39,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150150080] [2021-08-13 07:55:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:39,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:39,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:39,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:39,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:39,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:39,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:39,061 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:39,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:39,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:39,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:55:39,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:39,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150150080] [2021-08-13 07:55:39,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150150080] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:39,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:39,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:39,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23190137] [2021-08-13 07:55:39,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:39,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:39,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:39,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:39,071 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:39,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 315 transitions, 14766 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:39,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:39,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:39,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:39,332 INFO L129 PetriNetUnfolder]: 78/771 cut-off events. [2021-08-13 07:55:39,332 INFO L130 PetriNetUnfolder]: For 31373/31425 co-relation queries the response was YES. [2021-08-13 07:55:39,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9274 conditions, 771 events. 78/771 cut-off events. For 31373/31425 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 8164 event pairs, 0 based on Foata normal form. 9/736 useless extension candidates. Maximal degree in co-relation 8846. Up to 240 conditions per place. [2021-08-13 07:55:39,341 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 143 selfloop transitions, 29 changer transitions 159/348 dead transitions. [2021-08-13 07:55:39,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 348 transitions, 17046 flow [2021-08-13 07:55:39,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:55:39,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:55:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2021-08-13 07:55:39,342 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7991071428571429 [2021-08-13 07:55:39,342 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 179 transitions. [2021-08-13 07:55:39,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 179 transitions. [2021-08-13 07:55:39,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:39,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 179 transitions. [2021-08-13 07:55:39,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.375) internal successors, (179), 8 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:39,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:39,343 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:39,343 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 160 predicate places. [2021-08-13 07:55:39,343 INFO L482 AbstractCegarLoop]: Abstraction has has 187 places, 348 transitions, 17046 flow [2021-08-13 07:55:39,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:39,343 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:39,343 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:39,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-13 07:55:39,343 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:39,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:39,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2024524177, now seen corresponding path program 3 times [2021-08-13 07:55:39,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:39,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020660164] [2021-08-13 07:55:39,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:39,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:39,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:39,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:39,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:39,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:39,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:39,387 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:39,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:39,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:39,396 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 07:55:39,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:39,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020660164] [2021-08-13 07:55:39,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020660164] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:39,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:39,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:39,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296712353] [2021-08-13 07:55:39,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:39,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:39,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:39,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:39,397 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:39,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 348 transitions, 17046 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:39,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:39,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:39,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:39,656 INFO L129 PetriNetUnfolder]: 78/784 cut-off events. [2021-08-13 07:55:39,657 INFO L130 PetriNetUnfolder]: For 35085/35210 co-relation queries the response was YES. [2021-08-13 07:55:39,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9758 conditions, 784 events. 78/784 cut-off events. For 35085/35210 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 8322 event pairs, 0 based on Foata normal form. 13/752 useless extension candidates. Maximal degree in co-relation 9317. Up to 245 conditions per place. [2021-08-13 07:55:39,661 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 113 selfloop transitions, 59 changer transitions 166/355 dead transitions. [2021-08-13 07:55:39,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 355 transitions, 18034 flow [2021-08-13 07:55:39,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:55:39,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:55:39,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2021-08-13 07:55:39,662 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7464285714285714 [2021-08-13 07:55:39,662 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 209 transitions. [2021-08-13 07:55:39,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 209 transitions. [2021-08-13 07:55:39,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:39,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 209 transitions. [2021-08-13 07:55:39,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:39,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:39,665 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:39,665 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 169 predicate places. [2021-08-13 07:55:39,665 INFO L482 AbstractCegarLoop]: Abstraction has has 196 places, 355 transitions, 18034 flow [2021-08-13 07:55:39,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:39,665 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:39,665 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:39,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-13 07:55:39,666 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:39,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1097798677, now seen corresponding path program 4 times [2021-08-13 07:55:39,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:39,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759007816] [2021-08-13 07:55:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:39,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:39,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:39,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:39,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:39,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:39,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:39,749 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:39,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:39,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:39,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:39,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:55:39,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:39,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759007816] [2021-08-13 07:55:39,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759007816] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:39,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:39,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:39,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707274980] [2021-08-13 07:55:39,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:39,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:39,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:39,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:39,780 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:39,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 355 transitions, 18034 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:39,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:39,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:39,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:40,007 INFO L129 PetriNetUnfolder]: 77/787 cut-off events. [2021-08-13 07:55:40,007 INFO L130 PetriNetUnfolder]: For 37772/37882 co-relation queries the response was YES. [2021-08-13 07:55:40,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10129 conditions, 787 events. 77/787 cut-off events. For 37772/37882 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 8409 event pairs, 0 based on Foata normal form. 15/757 useless extension candidates. Maximal degree in co-relation 9677. Up to 246 conditions per place. [2021-08-13 07:55:40,012 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 132 selfloop transitions, 22 changer transitions 185/356 dead transitions. [2021-08-13 07:55:40,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 356 transitions, 18766 flow [2021-08-13 07:55:40,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:55:40,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:55:40,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2021-08-13 07:55:40,013 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7946428571428571 [2021-08-13 07:55:40,013 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 178 transitions. [2021-08-13 07:55:40,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 178 transitions. [2021-08-13 07:55:40,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:40,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 178 transitions. [2021-08-13 07:55:40,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:40,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:40,014 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:40,014 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 176 predicate places. [2021-08-13 07:55:40,014 INFO L482 AbstractCegarLoop]: Abstraction has has 203 places, 356 transitions, 18766 flow [2021-08-13 07:55:40,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:40,014 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:40,014 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:40,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-13 07:55:40,014 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:40,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:40,014 INFO L82 PathProgramCache]: Analyzing trace with hash 51850037, now seen corresponding path program 5 times [2021-08-13 07:55:40,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:40,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529765355] [2021-08-13 07:55:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:40,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:40,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:40,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:40,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:40,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:40,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:40,049 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:40,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:40,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:55:40,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:40,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529765355] [2021-08-13 07:55:40,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529765355] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:40,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:40,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:40,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628629988] [2021-08-13 07:55:40,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:40,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:40,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:40,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:40,058 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:40,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 356 transitions, 18766 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:40,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:40,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:40,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:40,354 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2021-08-13 07:55:40,355 INFO L130 PetriNetUnfolder]: For 39960/40063 co-relation queries the response was YES. [2021-08-13 07:55:40,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10475 conditions, 789 events. 76/789 cut-off events. For 39960/40063 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 8466 event pairs, 0 based on Foata normal form. 11/755 useless extension candidates. Maximal degree in co-relation 10042. Up to 246 conditions per place. [2021-08-13 07:55:40,359 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 122 selfloop transitions, 14 changer transitions 203/356 dead transitions. [2021-08-13 07:55:40,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 356 transitions, 19444 flow [2021-08-13 07:55:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:55:40,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:55:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2021-08-13 07:55:40,360 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-08-13 07:55:40,360 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 176 transitions. [2021-08-13 07:55:40,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 176 transitions. [2021-08-13 07:55:40,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:40,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 176 transitions. [2021-08-13 07:55:40,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:40,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:40,361 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:40,362 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 183 predicate places. [2021-08-13 07:55:40,362 INFO L482 AbstractCegarLoop]: Abstraction has has 210 places, 356 transitions, 19444 flow [2021-08-13 07:55:40,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:40,362 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:40,362 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:40,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-13 07:55:40,362 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:40,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:40,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1126555605, now seen corresponding path program 6 times [2021-08-13 07:55:40,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:40,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446537379] [2021-08-13 07:55:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:40,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:40,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:40,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:40,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:40,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:40,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:40,404 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:40,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:40,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:40,412 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 07:55:40,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:40,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446537379] [2021-08-13 07:55:40,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446537379] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:40,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:40,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:40,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064791001] [2021-08-13 07:55:40,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:40,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:40,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:40,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:40,413 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:40,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 356 transitions, 19444 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:40,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:40,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:40,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:40,728 INFO L129 PetriNetUnfolder]: 72/809 cut-off events. [2021-08-13 07:55:40,728 INFO L130 PetriNetUnfolder]: For 43139/43250 co-relation queries the response was YES. [2021-08-13 07:55:40,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11019 conditions, 809 events. 72/809 cut-off events. For 43139/43250 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8813 event pairs, 0 based on Foata normal form. 9/773 useless extension candidates. Maximal degree in co-relation 10568. Up to 252 conditions per place. [2021-08-13 07:55:40,732 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 94 selfloop transitions, 40 changer transitions 211/362 dead transitions. [2021-08-13 07:55:40,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 362 transitions, 20482 flow [2021-08-13 07:55:40,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 07:55:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 07:55:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 259 transitions. [2021-08-13 07:55:40,733 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2021-08-13 07:55:40,733 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 259 transitions. [2021-08-13 07:55:40,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 259 transitions. [2021-08-13 07:55:40,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:40,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 259 transitions. [2021-08-13 07:55:40,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.583333333333332) internal successors, (259), 12 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:40,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:40,734 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:40,734 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 194 predicate places. [2021-08-13 07:55:40,734 INFO L482 AbstractCegarLoop]: Abstraction has has 221 places, 362 transitions, 20482 flow [2021-08-13 07:55:40,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:40,734 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:40,734 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:40,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-13 07:55:40,735 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:40,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:40,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1210613377, now seen corresponding path program 7 times [2021-08-13 07:55:40,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:40,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39551781] [2021-08-13 07:55:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:40,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:40,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:40,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:40,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:40,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:40,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:40,770 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:40,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:40,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:40,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:40,779 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 07:55:40,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:40,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39551781] [2021-08-13 07:55:40,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39551781] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:40,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:40,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:40,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465118618] [2021-08-13 07:55:40,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:40,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:40,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:40,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:40,780 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:40,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 362 transitions, 20482 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:40,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:40,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:40,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:41,096 INFO L129 PetriNetUnfolder]: 70/817 cut-off events. [2021-08-13 07:55:41,096 INFO L130 PetriNetUnfolder]: For 46265/46392 co-relation queries the response was YES. [2021-08-13 07:55:41,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11438 conditions, 817 events. 70/817 cut-off events. For 46265/46392 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 8947 event pairs, 0 based on Foata normal form. 11/783 useless extension candidates. Maximal degree in co-relation 10975. Up to 254 conditions per place. [2021-08-13 07:55:41,100 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 95 selfloop transitions, 31 changer transitions 221/364 dead transitions. [2021-08-13 07:55:41,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 364 transitions, 21296 flow [2021-08-13 07:55:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 07:55:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 07:55:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 256 transitions. [2021-08-13 07:55:41,100 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2021-08-13 07:55:41,101 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 256 transitions. [2021-08-13 07:55:41,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 256 transitions. [2021-08-13 07:55:41,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:41,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 256 transitions. [2021-08-13 07:55:41,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:41,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:41,102 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:41,102 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 205 predicate places. [2021-08-13 07:55:41,102 INFO L482 AbstractCegarLoop]: Abstraction has has 232 places, 364 transitions, 21296 flow [2021-08-13 07:55:41,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:41,102 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:41,102 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:41,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-13 07:55:41,102 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:41,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:41,102 INFO L82 PathProgramCache]: Analyzing trace with hash -2018730311, now seen corresponding path program 8 times [2021-08-13 07:55:41,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:41,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38765086] [2021-08-13 07:55:41,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:41,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:41,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:41,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:41,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:41,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:41,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:41,140 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:41,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:41,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:41,148 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 07:55:41,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:41,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38765086] [2021-08-13 07:55:41,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38765086] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:41,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:41,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:41,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960344813] [2021-08-13 07:55:41,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:41,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:41,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:41,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:41,149 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:41,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 364 transitions, 21296 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:41,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:41,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:41,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:41,458 INFO L129 PetriNetUnfolder]: 68/824 cut-off events. [2021-08-13 07:55:41,458 INFO L130 PetriNetUnfolder]: For 48977/49116 co-relation queries the response was YES. [2021-08-13 07:55:41,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11831 conditions, 824 events. 68/824 cut-off events. For 48977/49116 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9091 event pairs, 0 based on Foata normal form. 11/790 useless extension candidates. Maximal degree in co-relation 11389. Up to 255 conditions per place. [2021-08-13 07:55:41,462 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 86 selfloop transitions, 25 changer transitions 237/365 dead transitions. [2021-08-13 07:55:41,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 365 transitions, 22054 flow [2021-08-13 07:55:41,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 07:55:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 07:55:41,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 258 transitions. [2021-08-13 07:55:41,463 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7678571428571429 [2021-08-13 07:55:41,463 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 258 transitions. [2021-08-13 07:55:41,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 258 transitions. [2021-08-13 07:55:41,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:41,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 258 transitions. [2021-08-13 07:55:41,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.5) internal successors, (258), 12 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:41,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:41,464 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:41,464 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 216 predicate places. [2021-08-13 07:55:41,464 INFO L482 AbstractCegarLoop]: Abstraction has has 243 places, 365 transitions, 22054 flow [2021-08-13 07:55:41,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:41,464 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:41,464 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:41,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-13 07:55:41,465 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:41,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:41,465 INFO L82 PathProgramCache]: Analyzing trace with hash -38207831, now seen corresponding path program 9 times [2021-08-13 07:55:41,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:41,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075507519] [2021-08-13 07:55:41,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:41,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:41,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:41,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:41,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:41,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:41,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:41,504 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:41,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:41,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:41,513 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 07:55:41,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:41,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075507519] [2021-08-13 07:55:41,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075507519] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:41,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:41,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:41,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340359727] [2021-08-13 07:55:41,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:41,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:41,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:41,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:41,514 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:41,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 365 transitions, 22054 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:41,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:41,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:41,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:41,801 INFO L129 PetriNetUnfolder]: 64/904 cut-off events. [2021-08-13 07:55:41,801 INFO L130 PetriNetUnfolder]: For 54123/54270 co-relation queries the response was YES. [2021-08-13 07:55:41,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13249 conditions, 904 events. 64/904 cut-off events. For 54123/54270 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 10393 event pairs, 0 based on Foata normal form. 13/870 useless extension candidates. Maximal degree in co-relation 12772. Up to 284 conditions per place. [2021-08-13 07:55:41,805 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 81 selfloop transitions, 24 changer transitions 273/395 dead transitions. [2021-08-13 07:55:41,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 395 transitions, 24730 flow [2021-08-13 07:55:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:55:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:55:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2021-08-13 07:55:41,809 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2021-08-13 07:55:41,809 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 174 transitions. [2021-08-13 07:55:41,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 174 transitions. [2021-08-13 07:55:41,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:41,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 174 transitions. [2021-08-13 07:55:41,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.75) internal successors, (174), 8 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 07:55:41,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:41,813 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:41,813 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 223 predicate places. [2021-08-13 07:55:41,813 INFO L482 AbstractCegarLoop]: Abstraction has has 250 places, 395 transitions, 24730 flow [2021-08-13 07:55:41,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:41,813 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:41,813 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:41,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-13 07:55:41,813 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:41,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:41,814 INFO L82 PathProgramCache]: Analyzing trace with hash 593371893, now seen corresponding path program 10 times [2021-08-13 07:55:41,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:41,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069669854] [2021-08-13 07:55:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:41,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:41,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:41,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:41,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:41,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:41,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:41,848 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:41,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:41,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:41,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:41,856 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 07:55:41,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:41,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069669854] [2021-08-13 07:55:41,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069669854] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:41,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:41,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:41,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807354741] [2021-08-13 07:55:41,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:41,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:41,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:41,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:41,858 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:41,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 395 transitions, 24730 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:41,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:41,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:41,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:42,181 INFO L129 PetriNetUnfolder]: 62/913 cut-off events. [2021-08-13 07:55:42,181 INFO L130 PetriNetUnfolder]: For 57112/57232 co-relation queries the response was YES. [2021-08-13 07:55:42,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13677 conditions, 913 events. 62/913 cut-off events. For 57112/57232 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 10563 event pairs, 0 based on Foata normal form. 7/873 useless extension candidates. Maximal degree in co-relation 13189. Up to 285 conditions per place. [2021-08-13 07:55:42,185 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 67 selfloop transitions, 36 changer transitions 276/396 dead transitions. [2021-08-13 07:55:42,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 396 transitions, 25554 flow [2021-08-13 07:55:42,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 07:55:42,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 07:55:42,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 234 transitions. [2021-08-13 07:55:42,186 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7597402597402597 [2021-08-13 07:55:42,186 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 234 transitions. [2021-08-13 07:55:42,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 234 transitions. [2021-08-13 07:55:42,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:42,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 234 transitions. [2021-08-13 07:55:42,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,187 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,187 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 233 predicate places. [2021-08-13 07:55:42,187 INFO L482 AbstractCegarLoop]: Abstraction has has 260 places, 396 transitions, 25554 flow [2021-08-13 07:55:42,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,188 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:42,188 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:42,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-13 07:55:42,188 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:42,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:42,188 INFO L82 PathProgramCache]: Analyzing trace with hash -298802813, now seen corresponding path program 11 times [2021-08-13 07:55:42,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:42,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896727861] [2021-08-13 07:55:42,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:42,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:42,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:42,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:42,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:42,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:42,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:42,223 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:42,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:42,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:42,231 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 07:55:42,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:42,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896727861] [2021-08-13 07:55:42,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896727861] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:42,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:42,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:42,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852703623] [2021-08-13 07:55:42,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:42,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:42,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:42,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:42,232 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:42,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 396 transitions, 25554 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:42,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:42,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:42,595 INFO L129 PetriNetUnfolder]: 62/910 cut-off events. [2021-08-13 07:55:42,596 INFO L130 PetriNetUnfolder]: For 60500/60632 co-relation queries the response was YES. [2021-08-13 07:55:42,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14021 conditions, 910 events. 62/910 cut-off events. For 60500/60632 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 10564 event pairs, 0 based on Foata normal form. 9/872 useless extension candidates. Maximal degree in co-relation 13562. Up to 284 conditions per place. [2021-08-13 07:55:42,599 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 65 selfloop transitions, 27 changer transitions 286/395 dead transitions. [2021-08-13 07:55:42,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 395 transitions, 26242 flow [2021-08-13 07:55:42,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 07:55:42,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 07:55:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2021-08-13 07:55:42,600 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7564935064935064 [2021-08-13 07:55:42,600 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 233 transitions. [2021-08-13 07:55:42,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 233 transitions. [2021-08-13 07:55:42,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:42,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 233 transitions. [2021-08-13 07:55:42,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,601 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,601 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 243 predicate places. [2021-08-13 07:55:42,601 INFO L482 AbstractCegarLoop]: Abstraction has has 270 places, 395 transitions, 26242 flow [2021-08-13 07:55:42,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,602 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:42,602 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:42,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-13 07:55:42,602 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:42,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:42,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1522621949, now seen corresponding path program 12 times [2021-08-13 07:55:42,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:42,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822181969] [2021-08-13 07:55:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:42,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:42,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:42,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:42,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:42,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:42,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:42,641 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:42,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:42,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:42,650 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 07:55:42,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:42,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822181969] [2021-08-13 07:55:42,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822181969] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:42,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:42,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:42,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435767846] [2021-08-13 07:55:42,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:42,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:42,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:42,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:42,651 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:42,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 395 transitions, 26242 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:42,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:42,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:42,970 INFO L129 PetriNetUnfolder]: 62/924 cut-off events. [2021-08-13 07:55:42,970 INFO L130 PetriNetUnfolder]: For 66223/66481 co-relation queries the response was YES. [2021-08-13 07:55:42,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14597 conditions, 924 events. 62/924 cut-off events. For 66223/66481 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10738 event pairs, 0 based on Foata normal form. 6/882 useless extension candidates. Maximal degree in co-relation 14128. Up to 287 conditions per place. [2021-08-13 07:55:42,974 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 61 selfloop transitions, 31 changer transitions 293/402 dead transitions. [2021-08-13 07:55:42,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 402 transitions, 27438 flow [2021-08-13 07:55:42,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:55:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:55:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2021-08-13 07:55:42,974 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7464285714285714 [2021-08-13 07:55:42,974 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 209 transitions. [2021-08-13 07:55:42,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 209 transitions. [2021-08-13 07:55:42,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:42,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 209 transitions. [2021-08-13 07:55:42,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,975 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,976 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 252 predicate places. [2021-08-13 07:55:42,976 INFO L482 AbstractCegarLoop]: Abstraction has has 279 places, 402 transitions, 27438 flow [2021-08-13 07:55:42,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:42,976 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:42,976 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:42,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-13 07:55:42,976 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:42,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:42,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1118271414, now seen corresponding path program 8 times [2021-08-13 07:55:42,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:42,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493021585] [2021-08-13 07:55:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:42,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:42,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:42,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:42,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:42,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:43,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:43,006 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:43,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:43,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:43,014 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 07:55:43,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:43,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493021585] [2021-08-13 07:55:43,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493021585] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:43,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:43,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:43,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234305801] [2021-08-13 07:55:43,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:43,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:43,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:43,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:43,015 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:43,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 402 transitions, 27438 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:43,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:43,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:43,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:43,319 INFO L129 PetriNetUnfolder]: 61/928 cut-off events. [2021-08-13 07:55:43,319 INFO L130 PetriNetUnfolder]: For 70002/70224 co-relation queries the response was YES. [2021-08-13 07:55:43,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15018 conditions, 928 events. 61/928 cut-off events. For 70002/70224 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10829 event pairs, 0 based on Foata normal form. 2/882 useless extension candidates. Maximal degree in co-relation 14541. Up to 288 conditions per place. [2021-08-13 07:55:43,323 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 62 selfloop transitions, 23 changer transitions 300/403 dead transitions. [2021-08-13 07:55:43,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 403 transitions, 28270 flow [2021-08-13 07:55:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:55:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:55:43,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2021-08-13 07:55:43,324 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8112244897959183 [2021-08-13 07:55:43,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 159 transitions. [2021-08-13 07:55:43,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 159 transitions. [2021-08-13 07:55:43,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:43,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 159 transitions. [2021-08-13 07:55:43,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:43,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:43,325 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:43,325 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 258 predicate places. [2021-08-13 07:55:43,325 INFO L482 AbstractCegarLoop]: Abstraction has has 285 places, 403 transitions, 28270 flow [2021-08-13 07:55:43,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:43,326 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:43,326 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:43,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-13 07:55:43,326 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:43,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:43,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1856567209, now seen corresponding path program 13 times [2021-08-13 07:55:43,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:43,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918986534] [2021-08-13 07:55:43,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:43,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:43,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:43,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:43,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:43,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:43,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:43,362 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:43,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:43,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:43,371 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 07:55:43,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:43,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918986534] [2021-08-13 07:55:43,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918986534] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:43,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:43,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:43,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631799234] [2021-08-13 07:55:43,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:43,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:43,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:43,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:43,372 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:43,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 403 transitions, 28270 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:43,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:43,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:43,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:43,723 INFO L129 PetriNetUnfolder]: 60/931 cut-off events. [2021-08-13 07:55:43,723 INFO L130 PetriNetUnfolder]: For 73123/73365 co-relation queries the response was YES. [2021-08-13 07:55:43,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15411 conditions, 931 events. 60/931 cut-off events. For 73123/73365 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10892 event pairs, 0 based on Foata normal form. 8/891 useless extension candidates. Maximal degree in co-relation 14965. Up to 288 conditions per place. [2021-08-13 07:55:43,727 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 57 selfloop transitions, 19 changer transitions 310/403 dead transitions. [2021-08-13 07:55:43,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 403 transitions, 29042 flow [2021-08-13 07:55:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:55:43,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:55:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2021-08-13 07:55:43,727 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.78125 [2021-08-13 07:55:43,727 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 175 transitions. [2021-08-13 07:55:43,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 175 transitions. [2021-08-13 07:55:43,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:43,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 175 transitions. [2021-08-13 07:55:43,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.875) internal successors, (175), 8 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 07:55:43,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:43,728 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:43,728 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 265 predicate places. [2021-08-13 07:55:43,728 INFO L482 AbstractCegarLoop]: Abstraction has has 292 places, 403 transitions, 29042 flow [2021-08-13 07:55:43,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:43,729 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:43,729 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:43,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-13 07:55:43,729 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:43,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:43,729 INFO L82 PathProgramCache]: Analyzing trace with hash 827759971, now seen corresponding path program 14 times [2021-08-13 07:55:43,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:43,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999827789] [2021-08-13 07:55:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:43,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:43,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:43,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:43,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:43,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:43,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:43,766 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:43,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:43,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:43,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:55:43,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:43,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999827789] [2021-08-13 07:55:43,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999827789] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:43,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:43,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:43,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677688216] [2021-08-13 07:55:43,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:43,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:43,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:43,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:43,775 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:43,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 403 transitions, 29042 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:43,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:43,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:43,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:44,080 INFO L129 PetriNetUnfolder]: 60/928 cut-off events. [2021-08-13 07:55:44,080 INFO L130 PetriNetUnfolder]: For 76452/76700 co-relation queries the response was YES. [2021-08-13 07:55:44,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15756 conditions, 928 events. 60/928 cut-off events. For 76452/76700 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10858 event pairs, 0 based on Foata normal form. 8/888 useless extension candidates. Maximal degree in co-relation 15345. Up to 287 conditions per place. [2021-08-13 07:55:44,083 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 38 selfloop transitions, 10 changer transitions 338/402 dead transitions. [2021-08-13 07:55:44,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 402 transitions, 29736 flow [2021-08-13 07:55:44,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:55:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:55:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2021-08-13 07:55:44,086 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-08-13 07:55:44,086 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 176 transitions. [2021-08-13 07:55:44,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 176 transitions. [2021-08-13 07:55:44,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:44,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 176 transitions. [2021-08-13 07:55:44,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:44,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:44,087 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:44,087 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 272 predicate places. [2021-08-13 07:55:44,087 INFO L482 AbstractCegarLoop]: Abstraction has has 299 places, 402 transitions, 29736 flow [2021-08-13 07:55:44,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:44,087 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:44,087 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:44,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-13 07:55:44,087 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:44,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:44,087 INFO L82 PathProgramCache]: Analyzing trace with hash 261962741, now seen corresponding path program 15 times [2021-08-13 07:55:44,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:44,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525342826] [2021-08-13 07:55:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:44,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:44,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:44,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:44,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:44,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:44,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:44,119 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:44,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:44,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:44,126 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 07:55:44,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:44,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525342826] [2021-08-13 07:55:44,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525342826] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:44,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:44,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:44,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654038056] [2021-08-13 07:55:44,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:44,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:44,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:44,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:44,127 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:44,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 402 transitions, 29736 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:44,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:44,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:44,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:44,517 INFO L129 PetriNetUnfolder]: 54/959 cut-off events. [2021-08-13 07:55:44,517 INFO L130 PetriNetUnfolder]: For 81331/81593 co-relation queries the response was YES. [2021-08-13 07:55:44,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16536 conditions, 959 events. 54/959 cut-off events. For 81331/81593 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 11429 event pairs, 0 based on Foata normal form. 11/922 useless extension candidates. Maximal degree in co-relation 16066. Up to 296 conditions per place. [2021-08-13 07:55:44,521 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 27 selfloop transitions, 19 changer transitions 349/411 dead transitions. [2021-08-13 07:55:44,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 411 transitions, 31226 flow [2021-08-13 07:55:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 07:55:44,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 07:55:44,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 259 transitions. [2021-08-13 07:55:44,522 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2021-08-13 07:55:44,522 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 259 transitions. [2021-08-13 07:55:44,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 259 transitions. [2021-08-13 07:55:44,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:44,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 259 transitions. [2021-08-13 07:55:44,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.583333333333332) internal successors, (259), 12 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:44,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:44,523 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:44,523 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 283 predicate places. [2021-08-13 07:55:44,523 INFO L482 AbstractCegarLoop]: Abstraction has has 310 places, 411 transitions, 31226 flow [2021-08-13 07:55:44,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:44,523 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:44,523 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:44,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-13 07:55:44,523 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:44,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:44,523 INFO L82 PathProgramCache]: Analyzing trace with hash -124734963, now seen corresponding path program 16 times [2021-08-13 07:55:44,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:44,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205174295] [2021-08-13 07:55:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:44,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:44,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:44,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:44,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:44,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:44,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:44,558 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:44,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:44,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:44,566 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 07:55:44,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:44,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205174295] [2021-08-13 07:55:44,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205174295] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:44,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:44,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:44,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347543787] [2021-08-13 07:55:44,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:44,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:44,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:44,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:44,567 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:44,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 411 transitions, 31226 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:44,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:44,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:44,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:44,942 INFO L129 PetriNetUnfolder]: 52/963 cut-off events. [2021-08-13 07:55:44,942 INFO L130 PetriNetUnfolder]: For 84528/84778 co-relation queries the response was YES. [2021-08-13 07:55:44,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16977 conditions, 963 events. 52/963 cut-off events. For 84528/84778 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 11522 event pairs, 0 based on Foata normal form. 11/926 useless extension candidates. Maximal degree in co-relation 16540. Up to 297 conditions per place. [2021-08-13 07:55:44,945 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 22 selfloop transitions, 17 changer transitions 357/412 dead transitions. [2021-08-13 07:55:44,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 412 transitions, 32096 flow [2021-08-13 07:55:44,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 07:55:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 07:55:44,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 255 transitions. [2021-08-13 07:55:44,946 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7589285714285714 [2021-08-13 07:55:44,946 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 255 transitions. [2021-08-13 07:55:44,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 255 transitions. [2021-08-13 07:55:44,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:44,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 255 transitions. [2021-08-13 07:55:44,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.25) internal successors, (255), 12 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:44,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:44,947 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:44,947 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 294 predicate places. [2021-08-13 07:55:44,947 INFO L482 AbstractCegarLoop]: Abstraction has has 321 places, 412 transitions, 32096 flow [2021-08-13 07:55:44,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:44,947 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:44,948 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:44,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-13 07:55:44,948 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:44,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:44,948 INFO L82 PathProgramCache]: Analyzing trace with hash -630211965, now seen corresponding path program 17 times [2021-08-13 07:55:44,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:44,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202375522] [2021-08-13 07:55:44,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:44,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:44,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:44,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:44,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:44,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:44,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:44,981 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:44,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:44,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:44,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:44,989 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 07:55:44,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:44,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202375522] [2021-08-13 07:55:44,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202375522] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:44,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:44,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:44,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158144245] [2021-08-13 07:55:44,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:44,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:44,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:44,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:44,990 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:44,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 412 transitions, 32096 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:44,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:44,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:44,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:45,427 INFO L129 PetriNetUnfolder]: 52/961 cut-off events. [2021-08-13 07:55:45,427 INFO L130 PetriNetUnfolder]: For 88030/88288 co-relation queries the response was YES. [2021-08-13 07:55:45,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17330 conditions, 961 events. 52/961 cut-off events. For 88030/88288 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 11521 event pairs, 0 based on Foata normal form. 11/924 useless extension candidates. Maximal degree in co-relation 16932. Up to 296 conditions per place. [2021-08-13 07:55:45,430 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 19 selfloop transitions, 9 changer transitions 367/411 dead transitions. [2021-08-13 07:55:45,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 411 transitions, 32802 flow [2021-08-13 07:55:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 07:55:45,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 07:55:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 257 transitions. [2021-08-13 07:55:45,431 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7648809523809523 [2021-08-13 07:55:45,431 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 257 transitions. [2021-08-13 07:55:45,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 257 transitions. [2021-08-13 07:55:45,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:45,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 257 transitions. [2021-08-13 07:55:45,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.416666666666668) internal successors, (257), 12 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:45,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:45,432 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:45,432 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 305 predicate places. [2021-08-13 07:55:45,432 INFO L482 AbstractCegarLoop]: Abstraction has has 332 places, 411 transitions, 32802 flow [2021-08-13 07:55:45,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:45,432 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:45,433 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:45,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-13 07:55:45,433 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:45,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:45,433 INFO L82 PathProgramCache]: Analyzing trace with hash -657508570, now seen corresponding path program 9 times [2021-08-13 07:55:45,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:45,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369111000] [2021-08-13 07:55:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:45,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:45,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:45,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:45,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:45,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:45,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:45,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:45,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:45,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:45,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:45,464 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:45,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:45,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:45,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:45,471 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 07:55:45,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:45,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369111000] [2021-08-13 07:55:45,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369111000] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:45,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:45,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:45,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443168862] [2021-08-13 07:55:45,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:45,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:45,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:45,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:45,472 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:45,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 411 transitions, 32802 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:45,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:45,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:45,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:45,819 INFO L129 PetriNetUnfolder]: 51/964 cut-off events. [2021-08-13 07:55:45,819 INFO L130 PetriNetUnfolder]: For 92810/93098 co-relation queries the response was YES. [2021-08-13 07:55:45,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17724 conditions, 964 events. 51/964 cut-off events. For 92810/93098 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 11573 event pairs, 0 based on Foata normal form. 2/918 useless extension candidates. Maximal degree in co-relation 17321. Up to 296 conditions per place. [2021-08-13 07:55:45,822 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 19 selfloop transitions, 6 changer transitions 369/411 dead transitions. [2021-08-13 07:55:45,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 411 transitions, 33578 flow [2021-08-13 07:55:45,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:55:45,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:55:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2021-08-13 07:55:45,822 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7928571428571428 [2021-08-13 07:55:45,822 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 222 transitions. [2021-08-13 07:55:45,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 222 transitions. [2021-08-13 07:55:45,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:45,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 222 transitions. [2021-08-13 07:55:45,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 22.2) internal successors, (222), 10 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:45,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:45,823 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:45,823 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 314 predicate places. [2021-08-13 07:55:45,823 INFO L482 AbstractCegarLoop]: Abstraction has has 341 places, 411 transitions, 33578 flow [2021-08-13 07:55:45,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:45,824 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:45,824 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:45,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-13 07:55:45,824 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:45,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:45,824 INFO L82 PathProgramCache]: Analyzing trace with hash 283787782, now seen corresponding path program 10 times [2021-08-13 07:55:45,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:45,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511872838] [2021-08-13 07:55:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:45,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:45,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:45,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:45,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:45,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:45,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:45,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:45,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:45,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:45,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:45,851 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:45,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:45,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:45,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:45,858 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 07:55:45,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:45,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511872838] [2021-08-13 07:55:45,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511872838] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:45,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:45,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:55:45,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735509272] [2021-08-13 07:55:45,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:55:45,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:45,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:55:45,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:55:45,859 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 07:55:45,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 411 transitions, 33578 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:45,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:45,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 07:55:45,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:46,262 INFO L129 PetriNetUnfolder]: 50/966 cut-off events. [2021-08-13 07:55:46,262 INFO L130 PetriNetUnfolder]: For 96158/96444 co-relation queries the response was YES. [2021-08-13 07:55:46,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18117 conditions, 966 events. 50/966 cut-off events. For 96158/96444 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 11637 event pairs, 0 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 17754. Up to 296 conditions per place. [2021-08-13 07:55:46,265 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 16 selfloop transitions, 2 changer transitions 377/411 dead transitions. [2021-08-13 07:55:46,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 411 transitions, 34354 flow [2021-08-13 07:55:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:55:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:55:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2021-08-13 07:55:46,273 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7892857142857143 [2021-08-13 07:55:46,273 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 221 transitions. [2021-08-13 07:55:46,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 221 transitions. [2021-08-13 07:55:46,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:46,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 221 transitions. [2021-08-13 07:55:46,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:46,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:46,281 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:46,281 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 323 predicate places. [2021-08-13 07:55:46,281 INFO L482 AbstractCegarLoop]: Abstraction has has 350 places, 411 transitions, 34354 flow [2021-08-13 07:55:46,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:46,281 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:46,281 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:46,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-13 07:55:46,281 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:46,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:46,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2029514105, now seen corresponding path program 18 times [2021-08-13 07:55:46,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:46,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678426349] [2021-08-13 07:55:46,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:46,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:46,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:46,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:46,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:46,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:46,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:46,320 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:46,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:46,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:46,327 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 07:55:46,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:46,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678426349] [2021-08-13 07:55:46,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678426349] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:46,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:46,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:46,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129808938] [2021-08-13 07:55:46,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:46,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:46,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:46,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:46,328 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:46,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 411 transitions, 34354 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:46,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:46,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:46,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:46,664 INFO L129 PetriNetUnfolder]: 46/1050 cut-off events. [2021-08-13 07:55:46,665 INFO L130 PetriNetUnfolder]: For 104894/105232 co-relation queries the response was YES. [2021-08-13 07:55:46,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19946 conditions, 1050 events. 46/1050 cut-off events. For 104894/105232 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 13035 event pairs, 0 based on Foata normal form. 6/1006 useless extension candidates. Maximal degree in co-relation 19553. Up to 319 conditions per place. [2021-08-13 07:55:46,667 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 7 selfloop transitions, 6 changer transitions 413/441 dead transitions. [2021-08-13 07:55:46,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 441 transitions, 37842 flow [2021-08-13 07:55:46,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:55:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:55:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2021-08-13 07:55:46,668 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7723214285714286 [2021-08-13 07:55:46,668 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 173 transitions. [2021-08-13 07:55:46,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 173 transitions. [2021-08-13 07:55:46,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:46,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 173 transitions. [2021-08-13 07:55:46,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:46,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:46,669 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 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 07:55:46,669 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 330 predicate places. [2021-08-13 07:55:46,669 INFO L482 AbstractCegarLoop]: Abstraction has has 357 places, 441 transitions, 37842 flow [2021-08-13 07:55:46,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:46,669 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:46,670 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:46,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-13 07:55:46,670 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:46,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:46,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1459440643, now seen corresponding path program 19 times [2021-08-13 07:55:46,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:46,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658749452] [2021-08-13 07:55:46,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:46,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:46,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:46,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:46,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:46,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:46,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:46,701 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:46,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:46,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:46,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:46,708 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 07:55:46,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:46,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658749452] [2021-08-13 07:55:46,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658749452] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:46,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:46,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:46,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201983107] [2021-08-13 07:55:46,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:46,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:46,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:46,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:46,709 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:46,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 441 transitions, 37842 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:46,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:46,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:46,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:47,174 INFO L129 PetriNetUnfolder]: 45/1053 cut-off events. [2021-08-13 07:55:47,174 INFO L130 PetriNetUnfolder]: For 109723/110067 co-relation queries the response was YES. [2021-08-13 07:55:47,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20376 conditions, 1053 events. 45/1053 cut-off events. For 109723/110067 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 13083 event pairs, 0 based on Foata normal form. 4/1007 useless extension candidates. Maximal degree in co-relation 19979. Up to 319 conditions per place. [2021-08-13 07:55:47,177 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 4 selfloop transitions, 7 changer transitions 415/441 dead transitions. [2021-08-13 07:55:47,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 441 transitions, 38690 flow [2021-08-13 07:55:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 07:55:47,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 07:55:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2021-08-13 07:55:47,178 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7564935064935064 [2021-08-13 07:55:47,178 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 233 transitions. [2021-08-13 07:55:47,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 233 transitions. [2021-08-13 07:55:47,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:47,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 233 transitions. [2021-08-13 07:55:47,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:47,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:47,179 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:47,179 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 340 predicate places. [2021-08-13 07:55:47,179 INFO L482 AbstractCegarLoop]: Abstraction has has 367 places, 441 transitions, 38690 flow [2021-08-13 07:55:47,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:47,179 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:55:47,179 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:55:47,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-13 07:55:47,179 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:55:47,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:55:47,179 INFO L82 PathProgramCache]: Analyzing trace with hash -2106733329, now seen corresponding path program 20 times [2021-08-13 07:55:47,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:55:47,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384855795] [2021-08-13 07:55:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:55:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:55:47,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:47,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:47,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:47,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:47,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:47,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:47,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:47,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:47,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:47,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:55:47,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:47,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:55:47,225 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 07:55:47,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:55:47,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:55:47,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:55:47,233 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 07:55:47,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:55:47,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384855795] [2021-08-13 07:55:47,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384855795] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:55:47,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:55:47,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:55:47,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283121773] [2021-08-13 07:55:47,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:55:47,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:55:47,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:55:47,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:55:47,235 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 07:55:47,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 441 transitions, 38690 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:47,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:55:47,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 07:55:47,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:55:47,697 INFO L129 PetriNetUnfolder]: 44/1055 cut-off events. [2021-08-13 07:55:47,697 INFO L130 PetriNetUnfolder]: For 113720/114090 co-relation queries the response was YES. [2021-08-13 07:55:47,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20805 conditions, 1055 events. 44/1055 cut-off events. For 113720/114090 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13170 event pairs, 0 based on Foata normal form. 4/1009 useless extension candidates. Maximal degree in co-relation 20452. Up to 319 conditions per place. [2021-08-13 07:55:47,700 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 0 selfloop transitions, 0 changer transitions 440/440 dead transitions. [2021-08-13 07:55:47,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 440 transitions, 39536 flow [2021-08-13 07:55:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 07:55:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 07:55:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2021-08-13 07:55:47,701 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7532467532467533 [2021-08-13 07:55:47,701 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 232 transitions. [2021-08-13 07:55:47,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 232 transitions. [2021-08-13 07:55:47,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:55:47,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 232 transitions. [2021-08-13 07:55:47,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.09090909090909) internal successors, (232), 11 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:47,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:47,702 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:47,702 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 348 predicate places. [2021-08-13 07:55:47,702 INFO L482 AbstractCegarLoop]: Abstraction has has 375 places, 440 transitions, 39536 flow [2021-08-13 07:55:47,702 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:55:47,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown