/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 14:25:10,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 14:25:10,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 14:25:10,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 14:25:10,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-Hitting.epf [2021-08-13 14:25:10,784 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 14:25:10,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 14:25:10,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 14:25:10,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 14:25:10,787 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 14:25:10,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 14:25:10,787 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 14:25:10,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 14:25:10,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 14:25:10,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 14:25:10,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 14:25:10,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 14:25:10,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 14:25:10,789 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 14:25:10,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 14:25:10,789 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 14:25:10,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 14:25:10,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 14:25:10,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 14:25:10,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 14:25:10,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 14:25:10,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 14:25:10,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 14:25:10,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 14:25:10,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 14:25:10,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 14:25:10,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 14:25:10,794 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 14:25:10,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 14:25:10,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 14:25:10,794 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 14:25:10,794 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 14:25:10,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 14:25:11,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 14:25:11,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 14:25:11,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 14:25:11,040 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 14:25:11,041 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 14:25:11,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-08-13 14:25:11,041 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-08-13 14:25:11,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 14:25:11,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 14:25:11,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 14:25:11,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 14:25:11,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 14:25:11,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:25:11" (1/1) ... [2021-08-13 14:25:11,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:25:11" (1/1) ... [2021-08-13 14:25:11,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 14:25:11,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 14:25:11,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 14:25:11,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 14:25:11,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:25:11" (1/1) ... [2021-08-13 14:25:11,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:25:11" (1/1) ... [2021-08-13 14:25:11,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:25:11" (1/1) ... [2021-08-13 14:25:11,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:25:11" (1/1) ... [2021-08-13 14:25:11,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:25:11" (1/1) ... [2021-08-13 14:25:11,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:25:11" (1/1) ... [2021-08-13 14:25:11,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:25:11" (1/1) ... [2021-08-13 14:25:11,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 14:25:11,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 14:25:11,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 14:25:11,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 14:25:11,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:25:11" (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 14:25:11,140 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 14:25:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 14:25:11,141 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 14:25:11,141 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 14:25:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 14:25:11,141 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 14:25:11,141 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 14:25:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 14:25:11,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 14:25:11,142 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-13 14:25:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-13 14:25:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-13 14:25:11,142 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-13 14:25:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-13 14:25:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-13 14:25:11,142 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 14:25:11,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 14:25:11,282 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 14:25:11,283 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 02:25:11 BoogieIcfgContainer [2021-08-13 14:25:11,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 14:25:11,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 14:25:11,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 14:25:11,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 14:25:11,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:25:11" (1/2) ... [2021-08-13 14:25:11,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116dc229 and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 02:25:11, skipping insertion in model container [2021-08-13 14:25:11,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 02:25:11" (2/2) ... [2021-08-13 14:25:11,288 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-08-13 14:25:11,291 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 14:25:11,291 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 14:25:11,292 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 14:25:11,353 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-13 14:25:11,368 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 14:25:11,384 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 14:25:11,385 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 14:25:11,385 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 14:25:11,385 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 14:25:11,385 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 14:25:11,385 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 14:25:11,385 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 14:25:11,385 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 14:25:11,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 45 transitions, 122 flow [2021-08-13 14:25:11,417 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-08-13 14:25:11,417 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 14:25:11,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 41 events. 0/41 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 14:25:11,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 45 transitions, 122 flow [2021-08-13 14:25:11,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 102 flow [2021-08-13 14:25:11,444 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-08-13 14:25:11,445 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 14:25:11,445 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:11,445 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:11,446 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:11,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:11,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1388169208, now seen corresponding path program 1 times [2021-08-13 14:25:11,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:11,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027589455] [2021-08-13 14:25:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:11,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:11,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 14:25:11,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:11,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:11,558 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 14:25:11,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:11,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027589455] [2021-08-13 14:25:11,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027589455] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:11,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:11,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 14:25:11,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794958247] [2021-08-13 14:25:11,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 14:25:11,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:11,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 14:25:11,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 14:25:11,579 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 45 [2021-08-13 14:25:11,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:11,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:11,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 45 [2021-08-13 14:25:11,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:11,622 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-08-13 14:25:11,622 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-08-13 14:25:11,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 45 events. 1/45 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 1 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 47. Up to 6 conditions per place. [2021-08-13 14:25:11,625 INFO L132 encePairwiseOnDemand]: 42/45 looper letters, 2 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2021-08-13 14:25:11,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 39 transitions, 110 flow [2021-08-13 14:25:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 14:25:11,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 14:25:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-08-13 14:25:11,635 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-08-13 14:25:11,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-08-13 14:25:11,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-08-13 14:25:11,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:11,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-08-13 14:25:11,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 14:25:11,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:11,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:11,649 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2021-08-13 14:25:11,649 INFO L482 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 110 flow [2021-08-13 14:25:11,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:11,649 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:11,649 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:11,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 14:25:11,650 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:11,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:11,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1425460208, now seen corresponding path program 2 times [2021-08-13 14:25:11,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:11,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567691947] [2021-08-13 14:25:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:11,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:11,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 14:25:11,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:11,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 14:25:11,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:11,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567691947] [2021-08-13 14:25:11,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567691947] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:11,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:11,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 14:25:11,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351965500] [2021-08-13 14:25:11,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 14:25:11,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:11,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 14:25:11,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 14:25:11,686 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 45 [2021-08-13 14:25:11,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:11,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:11,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 45 [2021-08-13 14:25:11,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:11,698 INFO L129 PetriNetUnfolder]: 2/50 cut-off events. [2021-08-13 14:25:11,698 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-08-13 14:25:11,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 50 events. 2/50 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 130 event pairs, 2 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2021-08-13 14:25:11,699 INFO L132 encePairwiseOnDemand]: 42/45 looper letters, 2 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2021-08-13 14:25:11,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 39 transitions, 118 flow [2021-08-13 14:25:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 14:25:11,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 14:25:11,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-08-13 14:25:11,700 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-08-13 14:25:11,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-08-13 14:25:11,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-08-13 14:25:11,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:11,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-08-13 14:25:11,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 14:25:11,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:11,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:11,703 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2021-08-13 14:25:11,703 INFO L482 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 118 flow [2021-08-13 14:25:11,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:11,703 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:11,703 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:11,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 14:25:11,703 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:11,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:11,704 INFO L82 PathProgramCache]: Analyzing trace with hash -911535578, now seen corresponding path program 3 times [2021-08-13 14:25:11,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:11,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675088475] [2021-08-13 14:25:11,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:11,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:11,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 14:25:11,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:11,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:11,727 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 14:25:11,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:11,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675088475] [2021-08-13 14:25:11,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675088475] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:11,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:11,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 14:25:11,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371791675] [2021-08-13 14:25:11,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 14:25:11,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:11,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 14:25:11,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 14:25:11,729 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 45 [2021-08-13 14:25:11,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:11,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:11,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 45 [2021-08-13 14:25:11,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:11,739 INFO L129 PetriNetUnfolder]: 2/50 cut-off events. [2021-08-13 14:25:11,739 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2021-08-13 14:25:11,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 50 events. 2/50 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 133 event pairs, 2 based on Foata normal form. 2/52 useless extension candidates. Maximal degree in co-relation 63. Up to 6 conditions per place. [2021-08-13 14:25:11,740 INFO L132 encePairwiseOnDemand]: 42/45 looper letters, 2 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2021-08-13 14:25:11,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 39 transitions, 126 flow [2021-08-13 14:25:11,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 14:25:11,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 14:25:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-08-13 14:25:11,741 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-08-13 14:25:11,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-08-13 14:25:11,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-08-13 14:25:11,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:11,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-08-13 14:25:11,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 14:25:11,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:11,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:11,743 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 6 predicate places. [2021-08-13 14:25:11,743 INFO L482 AbstractCegarLoop]: Abstraction has has 58 places, 39 transitions, 126 flow [2021-08-13 14:25:11,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:11,743 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:11,744 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:11,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 14:25:11,744 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:11,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:11,744 INFO L82 PathProgramCache]: Analyzing trace with hash -790178204, now seen corresponding path program 4 times [2021-08-13 14:25:11,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:11,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159519533] [2021-08-13 14:25:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:11,862 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:25:11,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:25:11,871 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:11,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:11,884 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:11,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:11,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:11,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:11,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:11,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:11,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:11,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:11,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:11,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:11,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:11,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:11,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:12,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:12,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:12,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:12,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:12,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:12,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:12,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:12,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:12,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:12,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:12,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:12,124 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-08-13 14:25:12,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 14:25:12,137 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-08-13 14:25:12,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:25:12,162 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:25:12,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:12,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:12,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:12,169 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 14:25:12,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:12,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159519533] [2021-08-13 14:25:12,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159519533] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:12,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:12,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-13 14:25:12,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531212964] [2021-08-13 14:25:12,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-08-13 14:25:12,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:12,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-13 14:25:12,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-13 14:25:12,175 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:25:12,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 39 transitions, 126 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:12,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:12,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:25:12,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:13,115 INFO L129 PetriNetUnfolder]: 940/1988 cut-off events. [2021-08-13 14:25:13,116 INFO L130 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2021-08-13 14:25:13,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3729 conditions, 1988 events. 940/1988 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13405 event pairs, 459 based on Foata normal form. 1/1922 useless extension candidates. Maximal degree in co-relation 3696. Up to 1259 conditions per place. [2021-08-13 14:25:13,128 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 41 selfloop transitions, 51 changer transitions 2/115 dead transitions. [2021-08-13 14:25:13,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 115 transitions, 466 flow [2021-08-13 14:25:13,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-13 14:25:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-08-13 14:25:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 693 transitions. [2021-08-13 14:25:13,132 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2021-08-13 14:25:13,133 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 693 transitions. [2021-08-13 14:25:13,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 693 transitions. [2021-08-13 14:25:13,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:13,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 693 transitions. [2021-08-13 14:25:13,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 30.130434782608695) internal successors, (693), 23 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:13,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 45.0) internal successors, (1080), 24 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:13,138 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 45.0) internal successors, (1080), 24 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:13,138 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2021-08-13 14:25:13,138 INFO L482 AbstractCegarLoop]: Abstraction has has 80 places, 115 transitions, 466 flow [2021-08-13 14:25:13,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:13,138 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:13,138 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:13,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 14:25:13,138 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:13,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:13,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1823679816, now seen corresponding path program 5 times [2021-08-13 14:25:13,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:13,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325187037] [2021-08-13 14:25:13,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:13,189 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:25:13,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:25:13,193 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:13,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:13,199 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 14:25:13,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 14:25:13,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:13,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:13,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:13,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:13,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:13,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:13,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:13,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:13,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:13,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:13,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:13,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:13,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:13,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:13,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:13,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:13,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:13,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:13,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:13,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:13,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:13,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:13,382 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:25:13,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:25:13,397 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:25:13,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:25:13,417 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:25:13,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:13,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:13,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:13,420 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 14:25:13,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:13,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325187037] [2021-08-13 14:25:13,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325187037] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:13,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:13,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-13 14:25:13,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217327770] [2021-08-13 14:25:13,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-13 14:25:13,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:13,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-13 14:25:13,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-13 14:25:13,422 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:25:13,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 115 transitions, 466 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:13,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:13,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:25:13,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:17,075 INFO L129 PetriNetUnfolder]: 1843/4028 cut-off events. [2021-08-13 14:25:17,075 INFO L130 PetriNetUnfolder]: For 647/1019 co-relation queries the response was YES. [2021-08-13 14:25:17,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10438 conditions, 4028 events. 1843/4028 cut-off events. For 647/1019 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 31075 event pairs, 511 based on Foata normal form. 23/3940 useless extension candidates. Maximal degree in co-relation 10342. Up to 2610 conditions per place. [2021-08-13 14:25:17,100 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 161 selfloop transitions, 377 changer transitions 5/564 dead transitions. [2021-08-13 14:25:17,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 564 transitions, 3348 flow [2021-08-13 14:25:17,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-08-13 14:25:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-08-13 14:25:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 3053 transitions. [2021-08-13 14:25:17,107 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.685297418630752 [2021-08-13 14:25:17,107 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 3053 transitions. [2021-08-13 14:25:17,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 3053 transitions. [2021-08-13 14:25:17,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:17,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 3053 transitions. [2021-08-13 14:25:17,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 30.838383838383837) internal successors, (3053), 99 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:17,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 45.0) internal successors, (4500), 100 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:17,119 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 45.0) internal successors, (4500), 100 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:17,119 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 126 predicate places. [2021-08-13 14:25:17,119 INFO L482 AbstractCegarLoop]: Abstraction has has 178 places, 564 transitions, 3348 flow [2021-08-13 14:25:17,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:17,119 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:17,119 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:17,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 14:25:17,119 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:17,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:17,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1282959242, now seen corresponding path program 6 times [2021-08-13 14:25:17,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:17,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214461936] [2021-08-13 14:25:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:17,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 14:25:17,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:17,132 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 14:25:17,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:17,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214461936] [2021-08-13 14:25:17,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214461936] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:17,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:17,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 14:25:17,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464958136] [2021-08-13 14:25:17,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 14:25:17,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:17,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 14:25:17,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 14:25:17,134 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 45 [2021-08-13 14:25:17,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 564 transitions, 3348 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:17,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:17,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 45 [2021-08-13 14:25:17,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:17,367 INFO L129 PetriNetUnfolder]: 1585/3475 cut-off events. [2021-08-13 14:25:17,368 INFO L130 PetriNetUnfolder]: For 568/893 co-relation queries the response was YES. [2021-08-13 14:25:17,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9219 conditions, 3475 events. 1585/3475 cut-off events. For 568/893 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 25961 event pairs, 418 based on Foata normal form. 93/3476 useless extension candidates. Maximal degree in co-relation 9121. Up to 2230 conditions per place. [2021-08-13 14:25:17,389 INFO L132 encePairwiseOnDemand]: 42/45 looper letters, 2 selfloop transitions, 2 changer transitions 6/557 dead transitions. [2021-08-13 14:25:17,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 557 transitions, 3314 flow [2021-08-13 14:25:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 14:25:17,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 14:25:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-08-13 14:25:17,391 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-08-13 14:25:17,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-08-13 14:25:17,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-08-13 14:25:17,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:17,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-08-13 14:25:17,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 14:25:17,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:17,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:17,392 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 128 predicate places. [2021-08-13 14:25:17,392 INFO L482 AbstractCegarLoop]: Abstraction has has 180 places, 557 transitions, 3314 flow [2021-08-13 14:25:17,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:17,392 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:17,392 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:17,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 14:25:17,392 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:17,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:17,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1870836918, now seen corresponding path program 7 times [2021-08-13 14:25:17,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:17,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653766229] [2021-08-13 14:25:17,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:17,418 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:25:17,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:25:17,422 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:17,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:17,427 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 14:25:17,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 14:25:17,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:17,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:17,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:17,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:17,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:17,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:17,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:17,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:17,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:17,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:17,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:17,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:17,620 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-08-13 14:25:17,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:25:17,639 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:25:17,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:17,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:17,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:17,642 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 14:25:17,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:17,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653766229] [2021-08-13 14:25:17,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653766229] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:17,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:17,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:25:17,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267159640] [2021-08-13 14:25:17,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:25:17,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:17,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:25:17,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:25:17,644 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:25:17,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 557 transitions, 3314 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:17,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:17,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:25:17,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:20,243 INFO L129 PetriNetUnfolder]: 2043/4496 cut-off events. [2021-08-13 14:25:20,243 INFO L130 PetriNetUnfolder]: For 1613/2383 co-relation queries the response was YES. [2021-08-13 14:25:20,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15109 conditions, 4496 events. 2043/4496 cut-off events. For 1613/2383 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 35432 event pairs, 415 based on Foata normal form. 11/4414 useless extension candidates. Maximal degree in co-relation 14990. Up to 2928 conditions per place. [2021-08-13 14:25:20,271 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 564 selfloop transitions, 257 changer transitions 13/855 dead transitions. [2021-08-13 14:25:20,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 855 transitions, 6770 flow [2021-08-13 14:25:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-08-13 14:25:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-08-13 14:25:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 2230 transitions. [2021-08-13 14:25:20,273 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6696696696696697 [2021-08-13 14:25:20,273 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 2230 transitions. [2021-08-13 14:25:20,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 2230 transitions. [2021-08-13 14:25:20,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:20,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 2230 transitions. [2021-08-13 14:25:20,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 30.135135135135137) internal successors, (2230), 74 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:20,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 45.0) internal successors, (3375), 75 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:20,280 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 45.0) internal successors, (3375), 75 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:20,280 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 201 predicate places. [2021-08-13 14:25:20,280 INFO L482 AbstractCegarLoop]: Abstraction has has 253 places, 855 transitions, 6770 flow [2021-08-13 14:25:20,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:20,281 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:20,281 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:20,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 14:25:20,281 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:20,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:20,281 INFO L82 PathProgramCache]: Analyzing trace with hash 252104594, now seen corresponding path program 8 times [2021-08-13 14:25:20,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:20,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405691796] [2021-08-13 14:25:20,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:20,320 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:25:20,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:25:20,324 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:20,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:20,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:20,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:20,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:20,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:20,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:20,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:20,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:20,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:20,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:20,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:20,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:20,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:20,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:20,519 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:25:20,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:25:20,539 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:25:20,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:20,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:20,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:20,542 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 14:25:20,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:20,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405691796] [2021-08-13 14:25:20,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405691796] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:20,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:20,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:25:20,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215966380] [2021-08-13 14:25:20,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:25:20,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:20,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:25:20,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:25:20,544 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:25:20,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 855 transitions, 6770 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:20,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:20,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:25:20,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:23,485 INFO L129 PetriNetUnfolder]: 2547/5657 cut-off events. [2021-08-13 14:25:23,485 INFO L130 PetriNetUnfolder]: For 4130/6201 co-relation queries the response was YES. [2021-08-13 14:25:23,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22909 conditions, 5657 events. 2547/5657 cut-off events. For 4130/6201 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 46737 event pairs, 373 based on Foata normal form. 164/5740 useless extension candidates. Maximal degree in co-relation 22767. Up to 3670 conditions per place. [2021-08-13 14:25:23,528 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 766 selfloop transitions, 568 changer transitions 14/1369 dead transitions. [2021-08-13 14:25:23,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 1369 transitions, 13578 flow [2021-08-13 14:25:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-08-13 14:25:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-08-13 14:25:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 2326 transitions. [2021-08-13 14:25:23,531 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6712842712842713 [2021-08-13 14:25:23,531 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 2326 transitions. [2021-08-13 14:25:23,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 2326 transitions. [2021-08-13 14:25:23,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:23,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 2326 transitions. [2021-08-13 14:25:23,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 30.207792207792206) internal successors, (2326), 77 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:23,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 45.0) internal successors, (3510), 78 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:23,539 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 45.0) internal successors, (3510), 78 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:23,539 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 277 predicate places. [2021-08-13 14:25:23,539 INFO L482 AbstractCegarLoop]: Abstraction has has 329 places, 1369 transitions, 13578 flow [2021-08-13 14:25:23,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:23,539 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:23,539 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:23,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 14:25:23,540 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:23,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:23,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1193455512, now seen corresponding path program 9 times [2021-08-13 14:25:23,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:23,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124282020] [2021-08-13 14:25:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:23,559 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:25:23,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:25:23,562 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:23,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:23,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:23,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:23,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:23,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:23,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:23,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:23,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:23,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:23,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:23,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:23,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:23,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:23,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:23,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:25:23,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:25:23,753 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:25:23,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:23,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:23,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:23,756 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 14:25:23,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:23,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124282020] [2021-08-13 14:25:23,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124282020] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:23,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:23,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:25:23,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118161299] [2021-08-13 14:25:23,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:25:23,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:23,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:25:23,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:25:23,758 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:25:23,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 1369 transitions, 13578 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:23,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:23,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:25:23,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:27,486 INFO L129 PetriNetUnfolder]: 3467/7465 cut-off events. [2021-08-13 14:25:27,486 INFO L130 PetriNetUnfolder]: For 8496/11375 co-relation queries the response was YES. [2021-08-13 14:25:27,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35750 conditions, 7465 events. 3467/7465 cut-off events. For 8496/11375 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 63253 event pairs, 424 based on Foata normal form. 203/7558 useless extension candidates. Maximal degree in co-relation 35574. Up to 4904 conditions per place. [2021-08-13 14:25:27,539 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 1271 selfloop transitions, 754 changer transitions 15/2061 dead transitions. [2021-08-13 14:25:27,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 2061 transitions, 24578 flow [2021-08-13 14:25:27,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-08-13 14:25:27,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-08-13 14:25:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 2586 transitions. [2021-08-13 14:25:27,543 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6841269841269841 [2021-08-13 14:25:27,543 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 2586 transitions. [2021-08-13 14:25:27,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 2586 transitions. [2021-08-13 14:25:27,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:27,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 2586 transitions. [2021-08-13 14:25:27,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 30.785714285714285) internal successors, (2586), 84 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:27,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 45.0) internal successors, (3825), 85 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:27,551 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 45.0) internal successors, (3825), 85 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:27,551 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 360 predicate places. [2021-08-13 14:25:27,551 INFO L482 AbstractCegarLoop]: Abstraction has has 412 places, 2061 transitions, 24578 flow [2021-08-13 14:25:27,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:27,551 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:27,551 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:27,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 14:25:27,552 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:27,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:27,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1696968084, now seen corresponding path program 10 times [2021-08-13 14:25:27,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:27,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402418003] [2021-08-13 14:25:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:27,570 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:25:27,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:25:27,573 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:27,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:27,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:27,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:27,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:27,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:27,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:27,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:27,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:27,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:27,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:27,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:27,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:27,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:27,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:27,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:25:27,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:25:27,879 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:25:27,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:27,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:27,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:27,881 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 14:25:27,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:27,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402418003] [2021-08-13 14:25:27,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402418003] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:27,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:27,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:25:27,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923971994] [2021-08-13 14:25:27,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:25:27,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:27,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:25:27,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:25:27,883 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:25:27,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 2061 transitions, 24578 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:27,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:27,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:25:27,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:32,042 INFO L129 PetriNetUnfolder]: 4342/9177 cut-off events. [2021-08-13 14:25:32,042 INFO L130 PetriNetUnfolder]: For 16065/21239 co-relation queries the response was YES. [2021-08-13 14:25:32,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50689 conditions, 9177 events. 4342/9177 cut-off events. For 16065/21239 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 79435 event pairs, 476 based on Foata normal form. 184/9227 useless extension candidates. Maximal degree in co-relation 50475. Up to 6107 conditions per place. [2021-08-13 14:25:32,116 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 2062 selfloop transitions, 590 changer transitions 16/2689 dead transitions. [2021-08-13 14:25:32,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 2689 transitions, 37450 flow [2021-08-13 14:25:32,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-08-13 14:25:32,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-08-13 14:25:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 2177 transitions. [2021-08-13 14:25:32,119 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6911111111111111 [2021-08-13 14:25:32,119 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 2177 transitions. [2021-08-13 14:25:32,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 2177 transitions. [2021-08-13 14:25:32,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:32,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 2177 transitions. [2021-08-13 14:25:32,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 31.1) internal successors, (2177), 70 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:32,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 45.0) internal successors, (3195), 71 states have internal predecessors, (3195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:32,126 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 45.0) internal successors, (3195), 71 states have internal predecessors, (3195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:32,126 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 429 predicate places. [2021-08-13 14:25:32,126 INFO L482 AbstractCegarLoop]: Abstraction has has 481 places, 2689 transitions, 37450 flow [2021-08-13 14:25:32,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:32,126 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:32,127 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:32,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 14:25:32,127 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:32,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:32,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1900757888, now seen corresponding path program 11 times [2021-08-13 14:25:32,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:32,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836067993] [2021-08-13 14:25:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:32,143 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:25:32,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:25:32,147 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:32,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:32,152 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:32,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:32,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:32,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:32,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:32,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:32,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:32,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:32,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:32,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:32,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:32,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:32,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:32,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:32,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:32,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:32,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:32,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:32,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:32,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:32,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:32,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:32,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:32,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:32,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:32,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:32,377 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:25:32,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:25:32,396 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:25:32,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:32,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:32,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:32,399 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 14:25:32,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:32,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836067993] [2021-08-13 14:25:32,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836067993] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:32,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:32,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:25:32,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560166619] [2021-08-13 14:25:32,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:25:32,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:32,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:25:32,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:25:32,401 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:25:32,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 2689 transitions, 37450 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:32,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:32,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:25:32,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:38,099 INFO L129 PetriNetUnfolder]: 5329/11137 cut-off events. [2021-08-13 14:25:38,099 INFO L130 PetriNetUnfolder]: For 28811/39034 co-relation queries the response was YES. [2021-08-13 14:25:38,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69752 conditions, 11137 events. 5329/11137 cut-off events. For 28811/39034 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 98615 event pairs, 404 based on Foata normal form. 730/11698 useless extension candidates. Maximal degree in co-relation 69470. Up to 7490 conditions per place. [2021-08-13 14:25:38,309 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 1940 selfloop transitions, 1479 changer transitions 21/3461 dead transitions. [2021-08-13 14:25:38,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 3461 transitions, 55138 flow [2021-08-13 14:25:38,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-08-13 14:25:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-08-13 14:25:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 2841 transitions. [2021-08-13 14:25:38,312 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.678853046594982 [2021-08-13 14:25:38,312 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 2841 transitions. [2021-08-13 14:25:38,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 2841 transitions. [2021-08-13 14:25:38,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:38,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 2841 transitions. [2021-08-13 14:25:38,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 30.548387096774192) internal successors, (2841), 93 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:38,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 45.0) internal successors, (4230), 94 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:38,321 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 45.0) internal successors, (4230), 94 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:38,321 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 521 predicate places. [2021-08-13 14:25:38,321 INFO L482 AbstractCegarLoop]: Abstraction has has 573 places, 3461 transitions, 55138 flow [2021-08-13 14:25:38,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:38,321 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:38,321 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:38,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 14:25:38,321 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:38,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:38,322 INFO L82 PathProgramCache]: Analyzing trace with hash 577742702, now seen corresponding path program 12 times [2021-08-13 14:25:38,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:38,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532155236] [2021-08-13 14:25:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:38,338 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:25:38,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:25:38,342 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:38,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:38,347 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:38,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:38,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:38,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:38,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:38,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:38,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:38,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:38,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:38,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:38,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:38,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:38,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:38,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:38,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:38,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:38,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:38,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:38,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:38,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:38,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:38,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:38,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:38,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:38,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:38,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:38,517 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:25:38,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:25:38,535 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:25:38,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:38,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:38,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:38,540 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 14:25:38,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:38,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532155236] [2021-08-13 14:25:38,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532155236] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:38,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:38,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:25:38,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258406975] [2021-08-13 14:25:38,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:25:38,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:38,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:25:38,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:25:38,544 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:25:38,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 3461 transitions, 55138 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:38,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:38,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:25:38,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:44,175 INFO L129 PetriNetUnfolder]: 5631/11856 cut-off events. [2021-08-13 14:25:44,175 INFO L130 PetriNetUnfolder]: For 38951/48769 co-relation queries the response was YES. [2021-08-13 14:25:44,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82444 conditions, 11856 events. 5631/11856 cut-off events. For 38951/48769 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 107063 event pairs, 436 based on Foata normal form. 696/12385 useless extension candidates. Maximal degree in co-relation 82138. Up to 7956 conditions per place. [2021-08-13 14:25:44,295 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 2946 selfloop transitions, 730 changer transitions 27/3724 dead transitions. [2021-08-13 14:25:44,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 3724 transitions, 66752 flow [2021-08-13 14:25:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-13 14:25:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-08-13 14:25:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1242 transitions. [2021-08-13 14:25:44,297 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2021-08-13 14:25:44,297 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 1242 transitions. [2021-08-13 14:25:44,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 1242 transitions. [2021-08-13 14:25:44,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:44,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 1242 transitions. [2021-08-13 14:25:44,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 29.571428571428573) internal successors, (1242), 42 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:44,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 45.0) internal successors, (1935), 43 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:44,301 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 45.0) internal successors, (1935), 43 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:44,301 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 562 predicate places. [2021-08-13 14:25:44,301 INFO L482 AbstractCegarLoop]: Abstraction has has 614 places, 3724 transitions, 66752 flow [2021-08-13 14:25:44,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:44,302 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:44,302 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:44,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 14:25:44,302 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:44,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:44,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1068540482, now seen corresponding path program 13 times [2021-08-13 14:25:44,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:44,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784069702] [2021-08-13 14:25:44,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:44,319 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:25:44,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:25:44,323 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:44,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:44,328 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:44,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:44,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:44,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:44,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:44,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:44,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:44,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:44,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:44,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:44,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:44,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:44,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:44,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:44,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:44,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:44,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:44,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:44,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:44,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:44,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:44,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:44,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:44,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:44,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:44,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:44,493 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:25:44,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:25:44,513 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:25:44,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:44,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:44,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:44,516 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 14:25:44,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:44,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784069702] [2021-08-13 14:25:44,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784069702] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:44,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:44,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:25:44,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173331513] [2021-08-13 14:25:44,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:25:44,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:44,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:25:44,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:25:44,517 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:25:44,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 3724 transitions, 66752 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:44,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:44,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:25:44,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:51,132 INFO L129 PetriNetUnfolder]: 5829/12246 cut-off events. [2021-08-13 14:25:51,133 INFO L130 PetriNetUnfolder]: For 51664/63939 co-relation queries the response was YES. [2021-08-13 14:25:51,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94261 conditions, 12246 events. 5829/12246 cut-off events. For 51664/63939 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 111151 event pairs, 419 based on Foata normal form. 713/12779 useless extension candidates. Maximal degree in co-relation 93931. Up to 8280 conditions per place. [2021-08-13 14:25:51,255 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 2888 selfloop transitions, 1078 changer transitions 33/4020 dead transitions. [2021-08-13 14:25:51,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 4020 transitions, 80078 flow [2021-08-13 14:25:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-13 14:25:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-08-13 14:25:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1293 transitions. [2021-08-13 14:25:51,257 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6682170542635659 [2021-08-13 14:25:51,257 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1293 transitions. [2021-08-13 14:25:51,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1293 transitions. [2021-08-13 14:25:51,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:51,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1293 transitions. [2021-08-13 14:25:51,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.069767441860463) internal successors, (1293), 43 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:51,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 45.0) internal successors, (1980), 44 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:51,261 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 45.0) internal successors, (1980), 44 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:51,261 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 604 predicate places. [2021-08-13 14:25:51,261 INFO L482 AbstractCegarLoop]: Abstraction has has 656 places, 4020 transitions, 80078 flow [2021-08-13 14:25:51,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:51,261 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:51,262 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:51,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 14:25:51,262 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:51,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:51,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1175455316, now seen corresponding path program 14 times [2021-08-13 14:25:51,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:51,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573055490] [2021-08-13 14:25:51,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:51,278 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:25:51,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:25:51,281 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:51,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:51,286 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:51,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:51,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:51,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:51,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:51,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:51,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:51,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:51,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:51,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:51,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:51,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:51,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:51,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:51,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:51,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:51,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:51,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:51,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:51,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:51,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:51,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:51,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:51,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:51,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:51,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:51,449 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:25:51,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:25:51,468 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:25:51,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:51,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:51,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:51,470 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 14:25:51,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:51,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573055490] [2021-08-13 14:25:51,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573055490] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:51,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:51,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:25:51,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626440058] [2021-08-13 14:25:51,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:25:51,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:51,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:25:51,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:25:51,472 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:25:51,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 4020 transitions, 80078 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:51,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:51,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:25:51,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:25:59,337 INFO L129 PetriNetUnfolder]: 6321/13250 cut-off events. [2021-08-13 14:25:59,337 INFO L130 PetriNetUnfolder]: For 72452/87521 co-relation queries the response was YES. [2021-08-13 14:25:59,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111309 conditions, 13250 events. 6321/13250 cut-off events. For 72452/87521 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 122100 event pairs, 465 based on Foata normal form. 583/13641 useless extension candidates. Maximal degree in co-relation 110955. Up to 8962 conditions per place. [2021-08-13 14:25:59,464 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 3514 selfloop transitions, 778 changer transitions 39/4352 dead transitions. [2021-08-13 14:25:59,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 4352 transitions, 95380 flow [2021-08-13 14:25:59,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-08-13 14:25:59,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-08-13 14:25:59,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 1869 transitions. [2021-08-13 14:25:59,467 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6698924731182796 [2021-08-13 14:25:59,467 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 1869 transitions. [2021-08-13 14:25:59,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 1869 transitions. [2021-08-13 14:25:59,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:25:59,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 1869 transitions. [2021-08-13 14:25:59,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 30.14516129032258) internal successors, (1869), 62 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:59,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 45.0) internal successors, (2835), 63 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:59,471 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 45.0) internal successors, (2835), 63 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:59,471 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 665 predicate places. [2021-08-13 14:25:59,472 INFO L482 AbstractCegarLoop]: Abstraction has has 717 places, 4352 transitions, 95380 flow [2021-08-13 14:25:59,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:59,472 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:25:59,472 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:25:59,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 14:25:59,472 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:25:59,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:25:59,472 INFO L82 PathProgramCache]: Analyzing trace with hash -369961320, now seen corresponding path program 15 times [2021-08-13 14:25:59,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:25:59,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039130393] [2021-08-13 14:25:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:25:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:25:59,488 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:25:59,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:25:59,491 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:59,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:59,496 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:25:59,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:25:59,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:59,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:59,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:59,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:59,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:59,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:59,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:59,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:59,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:59,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:59,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:59,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:59,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:59,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:59,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:59,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:59,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:59,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:59,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:59,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:25:59,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:59,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:59,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:59,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:25:59,664 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:25:59,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:25:59,684 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:25:59,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:25:59,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:25:59,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:25:59,687 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 14:25:59,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:25:59,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039130393] [2021-08-13 14:25:59,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039130393] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:25:59,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:25:59,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:25:59,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589114572] [2021-08-13 14:25:59,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:25:59,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:25:59,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:25:59,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:25:59,688 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:25:59,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 4352 transitions, 95380 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:25:59,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:25:59,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:25:59,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:26:08,985 INFO L129 PetriNetUnfolder]: 6329/13294 cut-off events. [2021-08-13 14:26:08,985 INFO L130 PetriNetUnfolder]: For 91914/112531 co-relation queries the response was YES. [2021-08-13 14:26:09,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121088 conditions, 13294 events. 6329/13294 cut-off events. For 91914/112531 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 122734 event pairs, 466 based on Foata normal form. 736/13813 useless extension candidates. Maximal degree in co-relation 120710. Up to 8989 conditions per place. [2021-08-13 14:26:09,115 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 3135 selfloop transitions, 1192 changer transitions 45/4393 dead transitions. [2021-08-13 14:26:09,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 760 places, 4393 transitions, 105026 flow [2021-08-13 14:26:09,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-13 14:26:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-08-13 14:26:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1324 transitions. [2021-08-13 14:26:09,117 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6686868686868687 [2021-08-13 14:26:09,117 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 1324 transitions. [2021-08-13 14:26:09,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 1324 transitions. [2021-08-13 14:26:09,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:26:09,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 1324 transitions. [2021-08-13 14:26:09,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 30.09090909090909) internal successors, (1324), 44 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:09,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 45.0) internal successors, (2025), 45 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:09,120 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 45.0) internal successors, (2025), 45 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:09,120 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 708 predicate places. [2021-08-13 14:26:09,120 INFO L482 AbstractCegarLoop]: Abstraction has has 760 places, 4393 transitions, 105026 flow [2021-08-13 14:26:09,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:09,120 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:26:09,120 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:26:09,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 14:26:09,121 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:26:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:26:09,121 INFO L82 PathProgramCache]: Analyzing trace with hash -916216938, now seen corresponding path program 16 times [2021-08-13 14:26:09,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:26:09,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762033648] [2021-08-13 14:26:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:26:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:26:09,137 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:26:09,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:26:09,140 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:26:09,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:26:09,147 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:26:09,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:26:09,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:09,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:26:09,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:09,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:09,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:09,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:26:09,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:09,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:26:09,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:09,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:26:09,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:09,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:09,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:09,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:09,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:09,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:26:09,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:09,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:26:09,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:09,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:09,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:09,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:09,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:09,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:26:09,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:26:09,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:26:09,326 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:26:09,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:09,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:09,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:26:09,329 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 14:26:09,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:26:09,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762033648] [2021-08-13 14:26:09,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762033648] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:26:09,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:26:09,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:26:09,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825905952] [2021-08-13 14:26:09,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:26:09,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:26:09,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:26:09,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:26:09,330 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:26:09,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 760 places, 4393 transitions, 105026 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:09,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:26:09,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:26:09,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:26:20,657 INFO L129 PetriNetUnfolder]: 7299/15029 cut-off events. [2021-08-13 14:26:20,657 INFO L130 PetriNetUnfolder]: For 128369/155117 co-relation queries the response was YES. [2021-08-13 14:26:20,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148744 conditions, 15029 events. 7299/15029 cut-off events. For 128369/155117 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 139736 event pairs, 528 based on Foata normal form. 932/15702 useless extension candidates. Maximal degree in co-relation 148342. Up to 10307 conditions per place. [2021-08-13 14:26:20,820 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 3533 selfloop transitions, 1533 changer transitions 51/5138 dead transitions. [2021-08-13 14:26:20,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 818 places, 5138 transitions, 133140 flow [2021-08-13 14:26:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-08-13 14:26:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-08-13 14:26:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 1814 transitions. [2021-08-13 14:26:20,822 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6832391713747646 [2021-08-13 14:26:20,822 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 1814 transitions. [2021-08-13 14:26:20,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 1814 transitions. [2021-08-13 14:26:20,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:26:20,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 1814 transitions. [2021-08-13 14:26:20,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 30.74576271186441) internal successors, (1814), 59 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:20,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 45.0) internal successors, (2700), 60 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:20,827 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 45.0) internal successors, (2700), 60 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:20,827 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 766 predicate places. [2021-08-13 14:26:20,827 INFO L482 AbstractCegarLoop]: Abstraction has has 818 places, 5138 transitions, 133140 flow [2021-08-13 14:26:20,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:20,827 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:26:20,827 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:26:20,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 14:26:20,827 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:26:20,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:26:20,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1042534752, now seen corresponding path program 17 times [2021-08-13 14:26:20,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:26:20,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639659349] [2021-08-13 14:26:20,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:26:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:26:20,842 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:26:20,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:26:20,845 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:26:20,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:26:20,852 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:26:20,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:26:20,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:20,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:26:20,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:20,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:20,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:20,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:20,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:20,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:26:20,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:20,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:26:20,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:20,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:20,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:20,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:20,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:20,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:26:20,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:20,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:20,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:20,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:26:20,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:20,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:26:20,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:20,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:26:21,011 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:26:21,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:26:21,029 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:26:21,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:21,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:21,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:26:21,032 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 14:26:21,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:26:21,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639659349] [2021-08-13 14:26:21,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639659349] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:26:21,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:26:21,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:26:21,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105329686] [2021-08-13 14:26:21,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:26:21,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:26:21,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:26:21,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:26:21,034 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:26:21,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 818 places, 5138 transitions, 133140 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:21,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:26:21,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:26:21,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:26:41,939 INFO L129 PetriNetUnfolder]: 9209/18854 cut-off events. [2021-08-13 14:26:41,940 INFO L130 PetriNetUnfolder]: For 187062/223277 co-relation queries the response was YES. [2021-08-13 14:26:42,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200958 conditions, 18854 events. 9209/18854 cut-off events. For 187062/223277 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 180896 event pairs, 528 based on Foata normal form. 1171/19657 useless extension candidates. Maximal degree in co-relation 200445. Up to 13113 conditions per place. [2021-08-13 14:26:42,246 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 4278 selfloop transitions, 2414 changer transitions 55/6768 dead transitions. [2021-08-13 14:26:42,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 923 places, 6768 transitions, 189014 flow [2021-08-13 14:26:42,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-08-13 14:26:42,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-08-13 14:26:42,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 3263 transitions. [2021-08-13 14:26:42,249 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6840670859538784 [2021-08-13 14:26:42,249 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 3263 transitions. [2021-08-13 14:26:42,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 3263 transitions. [2021-08-13 14:26:42,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:26:42,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 3263 transitions. [2021-08-13 14:26:42,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 30.78301886792453) internal successors, (3263), 106 states have internal predecessors, (3263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:42,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 45.0) internal successors, (4815), 107 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:42,255 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 45.0) internal successors, (4815), 107 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:42,256 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 871 predicate places. [2021-08-13 14:26:42,256 INFO L482 AbstractCegarLoop]: Abstraction has has 923 places, 6768 transitions, 189014 flow [2021-08-13 14:26:42,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:42,256 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:26:42,256 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:26:42,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 14:26:42,256 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:26:42,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:26:42,256 INFO L82 PathProgramCache]: Analyzing trace with hash -657381176, now seen corresponding path program 18 times [2021-08-13 14:26:42,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:26:42,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600348573] [2021-08-13 14:26:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:26:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:26:42,277 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:26:42,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:26:42,281 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:26:42,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:26:42,286 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:26:42,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:26:42,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:42,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:26:42,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:42,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:42,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:42,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:42,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:42,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:26:42,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:42,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:26:42,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:42,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:42,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:42,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:26:42,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:42,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:26:42,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:42,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:26:42,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:42,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:42,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:42,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:26:42,429 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:26:42,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:26:42,446 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:26:42,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:26:42,464 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:26:42,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:26:42,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:26:42,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:26:42,466 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 14:26:42,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:26:42,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600348573] [2021-08-13 14:26:42,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600348573] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:26:42,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:26:42,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:26:42,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523297872] [2021-08-13 14:26:42,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:26:42,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:26:42,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:26:42,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:26:42,468 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:26:42,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 923 places, 6768 transitions, 189014 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:26:42,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:26:42,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:26:42,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:27:17,991 INFO L129 PetriNetUnfolder]: 10467/21364 cut-off events. [2021-08-13 14:27:17,991 INFO L130 PetriNetUnfolder]: For 221501/252695 co-relation queries the response was YES. [2021-08-13 14:27:18,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 244378 conditions, 21364 events. 10467/21364 cut-off events. For 221501/252695 co-relation queries the response was YES. Maximal size of possible extension queue 1237. Compared 208443 event pairs, 558 based on Foata normal form. 1162/22081 useless extension candidates. Maximal degree in co-relation 243800. Up to 15034 conditions per place. [2021-08-13 14:27:18,267 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 5389 selfloop transitions, 2412 changer transitions 58/7880 dead transitions. [2021-08-13 14:27:18,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 997 places, 7880 transitions, 235868 flow [2021-08-13 14:27:18,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-08-13 14:27:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-08-13 14:27:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 2322 transitions. [2021-08-13 14:27:18,269 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.688 [2021-08-13 14:27:18,269 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 2322 transitions. [2021-08-13 14:27:18,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 2322 transitions. [2021-08-13 14:27:18,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:27:18,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 2322 transitions. [2021-08-13 14:27:18,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 30.96) internal successors, (2322), 75 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:27:18,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 45.0) internal successors, (3420), 76 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:27:18,273 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 45.0) internal successors, (3420), 76 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:27:18,274 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 945 predicate places. [2021-08-13 14:27:18,274 INFO L482 AbstractCegarLoop]: Abstraction has has 997 places, 7880 transitions, 235868 flow [2021-08-13 14:27:18,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:27:18,274 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:27:18,274 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:27:18,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 14:27:18,274 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:27:18,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:27:18,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2031483566, now seen corresponding path program 19 times [2021-08-13 14:27:18,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:27:18,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079419048] [2021-08-13 14:27:18,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:27:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:27:18,311 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:27:18,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:27:18,314 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:27:18,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:27:18,319 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:27:18,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:27:18,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:18,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:27:18,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:18,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:27:18,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:18,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:27:18,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:18,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:27:18,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:18,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:27:18,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:18,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:27:18,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:18,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:27:18,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:18,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:27:18,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:18,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:27:18,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:18,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:27:18,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:18,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:27:18,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:18,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:27:18,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:27:18,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:27:18,495 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:27:18,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:27:18,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:18,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:27:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 14:27:18,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:27:18,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079419048] [2021-08-13 14:27:18,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079419048] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:27:18,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:27:18,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:27:18,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251816585] [2021-08-13 14:27:18,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:27:18,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:27:18,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:27:18,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:27:18,499 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:27:18,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 997 places, 7880 transitions, 235868 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:27:18,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:27:18,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:27:18,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:27:57,376 INFO L129 PetriNetUnfolder]: 10908/22316 cut-off events. [2021-08-13 14:27:57,376 INFO L130 PetriNetUnfolder]: For 273348/318872 co-relation queries the response was YES. [2021-08-13 14:27:57,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 272103 conditions, 22316 events. 10908/22316 cut-off events. For 273348/318872 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 219699 event pairs, 620 based on Foata normal form. 1080/22937 useless extension candidates. Maximal degree in co-relation 271475. Up to 15783 conditions per place. [2021-08-13 14:27:57,650 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 6721 selfloop transitions, 1437 changer transitions 61/8240 dead transitions. [2021-08-13 14:27:57,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1041 places, 8240 transitions, 263106 flow [2021-08-13 14:27:57,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-13 14:27:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-08-13 14:27:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 1386 transitions. [2021-08-13 14:27:57,652 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6844444444444444 [2021-08-13 14:27:57,652 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 1386 transitions. [2021-08-13 14:27:57,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 1386 transitions. [2021-08-13 14:27:57,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:27:57,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 1386 transitions. [2021-08-13 14:27:57,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 30.8) internal successors, (1386), 45 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:27:57,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 45.0) internal successors, (2070), 46 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:27:57,655 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 45.0) internal successors, (2070), 46 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:27:57,655 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 989 predicate places. [2021-08-13 14:27:57,655 INFO L482 AbstractCegarLoop]: Abstraction has has 1041 places, 8240 transitions, 263106 flow [2021-08-13 14:27:57,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:27:57,655 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:27:57,655 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:27:57,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 14:27:57,656 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:27:57,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:27:57,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1631561956, now seen corresponding path program 20 times [2021-08-13 14:27:57,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:27:57,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767862595] [2021-08-13 14:27:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:27:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:27:57,671 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:27:57,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:27:57,675 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:27:57,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:27:57,679 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:27:57,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:27:57,685 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 14:27:57,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 14:27:57,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:57,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:27:57,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:57,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:27:57,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:57,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:27:57,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:57,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:27:57,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:57,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:27:57,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:57,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:27:57,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:57,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:27:57,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:57,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:27:57,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:57,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:27:57,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:57,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:27:57,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:57,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:27:57,859 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:27:57,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:27:57,878 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:27:57,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:27:57,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:27:57,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:27:57,880 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 14:27:57,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:27:57,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767862595] [2021-08-13 14:27:57,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767862595] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:27:57,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:27:57,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:27:57,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100208829] [2021-08-13 14:27:57,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:27:57,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:27:57,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:27:57,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:27:57,882 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:27:57,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1041 places, 8240 transitions, 263106 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:27:57,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:27:57,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:27:57,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:28:59,649 INFO L129 PetriNetUnfolder]: 11518/23584 cut-off events. [2021-08-13 14:28:59,649 INFO L130 PetriNetUnfolder]: For 320835/361690 co-relation queries the response was YES. [2021-08-13 14:28:59,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304296 conditions, 23584 events. 11518/23584 cut-off events. For 320835/361690 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 235417 event pairs, 605 based on Foata normal form. 414/23510 useless extension candidates. Maximal degree in co-relation 303616. Up to 16672 conditions per place. [2021-08-13 14:28:59,965 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7737 selfloop transitions, 831 changer transitions 67/8656 dead transitions. [2021-08-13 14:28:59,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1099 places, 8656 transitions, 293688 flow [2021-08-13 14:28:59,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-08-13 14:28:59,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-08-13 14:28:59,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 1793 transitions. [2021-08-13 14:28:59,966 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6753295668549906 [2021-08-13 14:28:59,967 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 1793 transitions. [2021-08-13 14:28:59,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 1793 transitions. [2021-08-13 14:28:59,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:28:59,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 1793 transitions. [2021-08-13 14:28:59,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 30.389830508474578) internal successors, (1793), 59 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:28:59,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 45.0) internal successors, (2700), 60 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:28:59,970 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 45.0) internal successors, (2700), 60 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:28:59,970 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 1047 predicate places. [2021-08-13 14:28:59,970 INFO L482 AbstractCegarLoop]: Abstraction has has 1099 places, 8656 transitions, 293688 flow [2021-08-13 14:28:59,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:28:59,971 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:28:59,971 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:28:59,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 14:28:59,971 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:28:59,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:28:59,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1229564616, now seen corresponding path program 21 times [2021-08-13 14:28:59,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:28:59,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766929520] [2021-08-13 14:28:59,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:28:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:29:00,003 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:29:00,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:29:00,006 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:29:00,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:29:00,011 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:29:00,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:29:00,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:00,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:29:00,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:00,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:29:00,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:00,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:29:00,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:00,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:29:00,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:00,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:29:00,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:00,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:29:00,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:00,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:29:00,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:00,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:29:00,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:00,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:29:00,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:00,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:29:00,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:00,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:29:00,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:00,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:29:00,190 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:29:00,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:29:00,208 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:29:00,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:29:00,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:00,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:29:00,210 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 14:29:00,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:29:00,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766929520] [2021-08-13 14:29:00,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766929520] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:29:00,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:29:00,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:29:00,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680217386] [2021-08-13 14:29:00,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:29:00,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:29:00,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:29:00,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:29:00,211 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:29:00,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1099 places, 8656 transitions, 293688 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:29:00,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:29:00,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:29:00,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:29:58,557 INFO L129 PetriNetUnfolder]: 11641/23841 cut-off events. [2021-08-13 14:29:58,557 INFO L130 PetriNetUnfolder]: For 373774/425245 co-relation queries the response was YES. [2021-08-13 14:29:58,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325513 conditions, 23841 events. 11641/23841 cut-off events. For 373774/425245 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 238269 event pairs, 612 based on Foata normal form. 921/24282 useless extension candidates. Maximal degree in co-relation 324779. Up to 16895 conditions per place. [2021-08-13 14:29:58,874 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7189 selfloop transitions, 1530 changer transitions 71/8811 dead transitions. [2021-08-13 14:29:58,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1147 places, 8811 transitions, 316538 flow [2021-08-13 14:29:58,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-13 14:29:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-08-13 14:29:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1512 transitions. [2021-08-13 14:29:58,875 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2021-08-13 14:29:58,876 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 1512 transitions. [2021-08-13 14:29:58,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 1512 transitions. [2021-08-13 14:29:58,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:29:58,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 1512 transitions. [2021-08-13 14:29:58,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 30.857142857142858) internal successors, (1512), 49 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:29:58,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 45.0) internal successors, (2250), 50 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:29:58,879 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 45.0) internal successors, (2250), 50 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:29:58,879 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 1095 predicate places. [2021-08-13 14:29:58,879 INFO L482 AbstractCegarLoop]: Abstraction has has 1147 places, 8811 transitions, 316538 flow [2021-08-13 14:29:58,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:29:58,879 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:29:58,879 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:29:58,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 14:29:58,879 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:29:58,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:29:58,880 INFO L82 PathProgramCache]: Analyzing trace with hash 790650332, now seen corresponding path program 22 times [2021-08-13 14:29:58,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:29:58,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985049950] [2021-08-13 14:29:58,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:29:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:29:58,896 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:29:58,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:29:58,902 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:29:58,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:29:58,907 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:29:58,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:29:58,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:58,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:29:58,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:58,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:29:58,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:58,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:29:58,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:58,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:29:58,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:58,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:29:58,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:58,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:29:58,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:58,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:29:58,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:58,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:29:59,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:59,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:29:59,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:59,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:29:59,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:59,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:29:59,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:59,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:29:59,073 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:29:59,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:29:59,091 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:29:59,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:29:59,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:29:59,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:29:59,093 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 14:29:59,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:29:59,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985049950] [2021-08-13 14:29:59,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985049950] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:29:59,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:29:59,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-13 14:29:59,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721259973] [2021-08-13 14:29:59,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-13 14:29:59,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:29:59,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-13 14:29:59,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-08-13 14:29:59,094 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:29:59,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1147 places, 8811 transitions, 316538 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:29:59,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:29:59,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:29:59,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:31:13,670 INFO L129 PetriNetUnfolder]: 12304/25005 cut-off events. [2021-08-13 14:31:13,670 INFO L130 PetriNetUnfolder]: For 440815/494996 co-relation queries the response was YES. [2021-08-13 14:31:13,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 360831 conditions, 25005 events. 12304/25005 cut-off events. For 440815/494996 co-relation queries the response was YES. Maximal size of possible extension queue 1528. Compared 250528 event pairs, 620 based on Foata normal form. 985/25450 useless extension candidates. Maximal degree in co-relation 360063. Up to 17800 conditions per place. [2021-08-13 14:31:14,066 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7723 selfloop transitions, 1616 changer transitions 77/9437 dead transitions. [2021-08-13 14:31:14,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1201 places, 9437 transitions, 357906 flow [2021-08-13 14:31:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-13 14:31:14,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-08-13 14:31:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 1680 transitions. [2021-08-13 14:31:14,068 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6787878787878788 [2021-08-13 14:31:14,068 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 1680 transitions. [2021-08-13 14:31:14,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 1680 transitions. [2021-08-13 14:31:14,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:31:14,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 1680 transitions. [2021-08-13 14:31:14,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 30.545454545454547) internal successors, (1680), 55 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:31:14,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 45.0) internal successors, (2520), 56 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:31:14,072 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 45.0) internal successors, (2520), 56 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:31:14,072 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 1149 predicate places. [2021-08-13 14:31:14,072 INFO L482 AbstractCegarLoop]: Abstraction has has 1201 places, 9437 transitions, 357906 flow [2021-08-13 14:31:14,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:31:14,072 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:31:14,072 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:31:14,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 14:31:14,072 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:31:14,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:31:14,072 INFO L82 PathProgramCache]: Analyzing trace with hash 410458306, now seen corresponding path program 23 times [2021-08-13 14:31:14,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:31:14,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892706903] [2021-08-13 14:31:14,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:31:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:31:14,095 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:31:14,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:31:14,100 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:31:14,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:31:14,105 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:31:14,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:31:14,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:31:14,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:31:14,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:31:14,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:31:14,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:31:14,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:31:14,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:31:14,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:31:14,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:31:14,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:31:14,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:31:14,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:31:14,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:31:14,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:31:14,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:31:14,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:31:14,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:31:14,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:31:14,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:31:14,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:31:14,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:31:14,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:31:14,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:31:14,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:31:14,263 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-08-13 14:31:14,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:31:14,282 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:31:14,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:31:14,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:31:14,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:31:14,284 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 14:31:14,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:31:14,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892706903] [2021-08-13 14:31:14,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892706903] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:31:14,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:31:14,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-13 14:31:14,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805857754] [2021-08-13 14:31:14,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-13 14:31:14,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:31:14,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-13 14:31:14,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-13 14:31:14,285 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:31:14,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1201 places, 9437 transitions, 357906 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:31:14,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:31:14,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:31:14,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:32:58,089 INFO L129 PetriNetUnfolder]: 13451/27074 cut-off events. [2021-08-13 14:32:58,089 INFO L130 PetriNetUnfolder]: For 524681/586104 co-relation queries the response was YES. [2021-08-13 14:32:58,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 412935 conditions, 27074 events. 13451/27074 cut-off events. For 524681/586104 co-relation queries the response was YES. Maximal size of possible extension queue 1693. Compared 272293 event pairs, 644 based on Foata normal form. 1150/27628 useless extension candidates. Maximal degree in co-relation 412087. Up to 19442 conditions per place. [2021-08-13 14:32:58,483 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 8414 selfloop transitions, 1832 changer transitions 89/10356 dead transitions. [2021-08-13 14:32:58,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1258 places, 10356 transitions, 413498 flow [2021-08-13 14:32:58,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-13 14:32:58,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-08-13 14:32:58,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1821 transitions. [2021-08-13 14:32:58,485 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6977011494252874 [2021-08-13 14:32:58,485 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1821 transitions. [2021-08-13 14:32:58,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1821 transitions. [2021-08-13 14:32:58,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:32:58,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1821 transitions. [2021-08-13 14:32:58,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 31.396551724137932) internal successors, (1821), 58 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:32:58,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 45.0) internal successors, (2655), 59 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:32:58,488 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 45.0) internal successors, (2655), 59 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:32:58,488 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 1206 predicate places. [2021-08-13 14:32:58,488 INFO L482 AbstractCegarLoop]: Abstraction has has 1258 places, 10356 transitions, 413498 flow [2021-08-13 14:32:58,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:32:58,488 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:32:58,488 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:32:58,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 14:32:58,489 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 14:32:58,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:32:58,489 INFO L82 PathProgramCache]: Analyzing trace with hash 106151810, now seen corresponding path program 24 times [2021-08-13 14:32:58,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:32:58,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498671008] [2021-08-13 14:32:58,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:32:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:32:58,504 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-08-13 14:32:58,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 14:32:58,508 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:32:58,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:32:58,516 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-08-13 14:32:58,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 14:32:58,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:32:58,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:32:58,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:32:58,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:32:58,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:32:58,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:32:58,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:32:58,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:32:58,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:32:58,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:32:58,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:32:58,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:32:58,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:32:58,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:32:58,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:32:58,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 14:32:58,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:32:58,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:32:58,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:32:58,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:32:58,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:32:58,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 14:32:58,638 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:32:58,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:32:58,654 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 14:32:58,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 14:32:58,670 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-08-13 14:32:58,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 14:32:58,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:32:58,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:32:58,673 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 14:32:58,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:32:58,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498671008] [2021-08-13 14:32:58,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498671008] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:32:58,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:32:58,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-13 14:32:58,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488676810] [2021-08-13 14:32:58,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-13 14:32:58,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:32:58,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-13 14:32:58,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-13 14:32:58,674 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-08-13 14:32:58,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1258 places, 10356 transitions, 413498 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:32:58,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:32:58,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-08-13 14:32:58,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:33:52,914 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 Received shutdown request... [2021-08-13 14:34:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-08-13 14:34:29,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 14:34:29,067 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-13 14:34:29,069 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 14:34:29,070 WARN L188 ceAbstractionStarter]: Timeout [2021-08-13 14:34:29,070 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 02:34:29 BasicIcfg [2021-08-13 14:34:29,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 14:34:29,071 INFO L168 Benchmark]: Toolchain (without parser) took 558013.16 ms. Allocated memory was 209.7 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 189.1 MB in the beginning and 684.5 MB in the end (delta: -495.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 8.0 GB. [2021-08-13 14:34:29,071 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 209.7 MB. Free memory is still 190.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 14:34:29,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.49 ms. Allocated memory is still 209.7 MB. Free memory was 189.1 MB in the beginning and 187.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-13 14:34:29,071 INFO L168 Benchmark]: Boogie Preprocessor took 10.19 ms. Allocated memory is still 209.7 MB. Free memory was 187.7 MB in the beginning and 186.7 MB in the end (delta: 971.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 14:34:29,071 INFO L168 Benchmark]: RCFGBuilder took 185.84 ms. Allocated memory is still 209.7 MB. Free memory was 186.6 MB in the beginning and 173.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-08-13 14:34:29,071 INFO L168 Benchmark]: TraceAbstraction took 557786.29 ms. Allocated memory was 209.7 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 173.4 MB in the beginning and 684.5 MB in the end (delta: -511.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 8.0 GB. [2021-08-13 14:34:29,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 209.7 MB. Free memory is still 190.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.49 ms. Allocated memory is still 209.7 MB. Free memory was 189.1 MB in the beginning and 187.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.19 ms. Allocated memory is still 209.7 MB. Free memory was 187.7 MB in the beginning and 186.7 MB in the end (delta: 971.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 185.84 ms. Allocated memory is still 209.7 MB. Free memory was 186.6 MB in the beginning and 173.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 557786.29 ms. Allocated memory was 209.7 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 173.4 MB in the beginning and 684.5 MB in the end (delta: -511.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (17states, 26/45 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 326937 conditions, 19899 events (10448/19898 cut-off events. For 592571/661719 co-relation queries the response was YES. Maximal size of possible extension queue 1736. Compared 199327 event pairs, 627 based on Foata normal form. 1560/22359 useless extension candidates. Maximal degree in co-relation 326874. Up to 14555 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 82 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 14.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 557685.6ms, OverallIterations: 24, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 552569.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 45.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1071 SDtfs, 2455 SDslu, 2392 SDs, 0 SdLazy, 42829 SolverSat, 1824 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13637.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1452 GetRequests, 25 SyntacticMatches, 24 SemanticMatches, 1403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31043 ImplicationChecksByTransitivity, 26028.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=413498occurred in iteration=23, InterpolantAutomatonStates: 1229, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.7ms SsaConstructionTime, 133.3ms SatisfiabilityAnalysisTime, 4734.7ms InterpolantComputationTime, 936 NumberOfCodeBlocks, 936 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 912 ConstructedInterpolants, 0 QuantifiedInterpolants, 10427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown