/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 12:50:52,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 12:50:52,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 12:50:52,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 12:50:52,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 12:50:52,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 12:50:52,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 12:50:52,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 12:50:52,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 12:50:52,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 12:50:52,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 12:50:52,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 12:50:52,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 12:50:52,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 12:50:52,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 12:50:52,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 12:50:52,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 12:50:52,269 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-Hitting.epf [2021-08-13 12:50:52,296 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 12:50:52,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 12:50:52,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 12:50:52,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 12:50:52,300 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 12:50:52,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 12:50:52,300 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 12:50:52,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 12:50:52,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 12:50:52,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 12:50:52,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 12:50:52,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 12:50:52,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 12:50:52,301 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 12:50:52,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 12:50:52,301 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 12:50:52,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 12:50:52,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 12:50:52,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 12:50:52,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 12:50:52,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 12:50:52,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 12:50:52,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 12:50:52,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 12:50:52,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 12:50:52,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 12:50:52,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 12:50:52,303 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 12:50:52,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 12:50:52,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 12:50:52,303 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 12:50:52,303 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 12:50:52,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 12:50:52,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 12:50:52,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 12:50:52,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 12:50:52,573 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 12:50:52,574 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 12:50:52,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl [2021-08-13 12:50:52,574 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl' [2021-08-13 12:50:52,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 12:50:52,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 12:50:52,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 12:50:52,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 12:50:52,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 12:50:52,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:50:52" (1/1) ... [2021-08-13 12:50:52,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:50:52" (1/1) ... [2021-08-13 12:50:52,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 12:50:52,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 12:50:52,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 12:50:52,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 12:50:52,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:50:52" (1/1) ... [2021-08-13 12:50:52,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:50:52" (1/1) ... [2021-08-13 12:50:52,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:50:52" (1/1) ... [2021-08-13 12:50:52,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:50:52" (1/1) ... [2021-08-13 12:50:52,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:50:52" (1/1) ... [2021-08-13 12:50:52,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:50:52" (1/1) ... [2021-08-13 12:50:52,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:50:52" (1/1) ... [2021-08-13 12:50:52,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 12:50:52,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 12:50:52,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 12:50:52,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 12:50:52,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:50:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 12:50:52,683 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-08-13 12:50:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-08-13 12:50:52,683 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-08-13 12:50:52,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-08-13 12:50:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-08-13 12:50:52,684 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-08-13 12:50:52,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-08-13 12:50:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-08-13 12:50:52,684 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-08-13 12:50:52,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-08-13 12:50:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-08-13 12:50:52,684 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-08-13 12:50:52,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 12:50:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 12:50:52,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 12:50:52,685 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 12:50:52,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 12:50:52,776 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 12:50:52,777 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:50:52 BoogieIcfgContainer [2021-08-13 12:50:52,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 12:50:52,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 12:50:52,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 12:50:52,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 12:50:52,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:50:52" (1/2) ... [2021-08-13 12:50:52,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516ec9bb and model type example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:50:52, skipping insertion in model container [2021-08-13 12:50:52,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:50:52" (2/2) ... [2021-08-13 12:50:52,782 INFO L111 eAbstractionObserver]: Analyzing ICFG example_4.bpl [2021-08-13 12:50:52,786 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 12:50:52,786 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 12:50:52,786 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 12:50:52,819 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-08-13 12:50:52,834 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 12:50:52,848 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 12:50:52,848 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 12:50:52,848 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 12:50:52,849 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 12:50:52,849 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 12:50:52,849 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 12:50:52,849 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 12:50:52,849 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 12:50:52,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions, 138 flow [2021-08-13 12:50:52,882 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2021-08-13 12:50:52,882 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-08-13 12:50:52,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 47 events. 17/47 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2021-08-13 12:50:52,885 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 35 transitions, 138 flow [2021-08-13 12:50:52,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 29 transitions, 118 flow [2021-08-13 12:50:52,902 INFO L129 PetriNetUnfolder]: 17/44 cut-off events. [2021-08-13 12:50:52,903 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-08-13 12:50:52,903 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:52,903 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:52,904 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:52,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:52,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1165854259, now seen corresponding path program 1 times [2021-08-13 12:50:52,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:52,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456436395] [2021-08-13 12:50:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:53,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:53,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:50:53,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:53,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:53,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:53,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456436395] [2021-08-13 12:50:53,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456436395] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:53,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:53,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:50:53,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465921946] [2021-08-13 12:50:53,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:50:53,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:53,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:50:53,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:50:53,045 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 35 [2021-08-13 12:50:53,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:53,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 35 [2021-08-13 12:50:53,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:53,087 INFO L129 PetriNetUnfolder]: 14/41 cut-off events. [2021-08-13 12:50:53,087 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2021-08-13 12:50:53,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 41 events. 14/41 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 82 event pairs, 0 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 39. Up to 12 conditions per place. [2021-08-13 12:50:53,089 INFO L132 encePairwiseOnDemand]: 33/35 looper letters, 3 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2021-08-13 12:50:53,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 121 flow [2021-08-13 12:50:53,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:50:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:50:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2021-08-13 12:50:53,101 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 12:50:53,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 95 transitions. [2021-08-13 12:50:53,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 95 transitions. [2021-08-13 12:50:53,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:53,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 95 transitions. [2021-08-13 12:50:53,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,108 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2021-08-13 12:50:53,108 INFO L482 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 121 flow [2021-08-13 12:50:53,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,108 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:53,109 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:53,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 12:50:53,109 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:53,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:53,110 INFO L82 PathProgramCache]: Analyzing trace with hash 899557645, now seen corresponding path program 1 times [2021-08-13 12:50:53,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:53,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569678319] [2021-08-13 12:50:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:53,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:53,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:50:53,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:53,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:53,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569678319] [2021-08-13 12:50:53,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569678319] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:53,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:53,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:50:53,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525881029] [2021-08-13 12:50:53,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:50:53,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:53,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:50:53,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:50:53,152 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 35 [2021-08-13 12:50:53,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:53,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 35 [2021-08-13 12:50:53,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:53,177 INFO L129 PetriNetUnfolder]: 6/29 cut-off events. [2021-08-13 12:50:53,177 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2021-08-13 12:50:53,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 29 events. 6/29 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 3/32 useless extension candidates. Maximal degree in co-relation 32. Up to 6 conditions per place. [2021-08-13 12:50:53,178 INFO L132 encePairwiseOnDemand]: 32/35 looper letters, 2 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2021-08-13 12:50:53,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 117 flow [2021-08-13 12:50:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:50:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:50:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2021-08-13 12:50:53,186 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 12:50:53,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 95 transitions. [2021-08-13 12:50:53,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 95 transitions. [2021-08-13 12:50:53,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:53,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 95 transitions. [2021-08-13 12:50:53,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,188 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2021-08-13 12:50:53,188 INFO L482 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 117 flow [2021-08-13 12:50:53,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,189 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:53,189 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:53,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 12:50:53,189 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:53,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:53,189 INFO L82 PathProgramCache]: Analyzing trace with hash 489098449, now seen corresponding path program 1 times [2021-08-13 12:50:53,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:53,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606206123] [2021-08-13 12:50:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:53,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:53,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:50:53,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:53,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:53,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606206123] [2021-08-13 12:50:53,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606206123] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:53,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:53,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:50:53,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168603170] [2021-08-13 12:50:53,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:50:53,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:53,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:50:53,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:50:53,233 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 35 [2021-08-13 12:50:53,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:53,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 35 [2021-08-13 12:50:53,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:53,250 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-08-13 12:50:53,250 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-08-13 12:50:53,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 17 events. 0/17 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 12:50:53,250 INFO L132 encePairwiseOnDemand]: 31/35 looper letters, 1 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2021-08-13 12:50:53,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 17 transitions, 70 flow [2021-08-13 12:50:53,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:50:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:50:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2021-08-13 12:50:53,253 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 12:50:53,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 95 transitions. [2021-08-13 12:50:53,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 95 transitions. [2021-08-13 12:50:53,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:53,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 95 transitions. [2021-08-13 12:50:53,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,255 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2021-08-13 12:50:53,255 INFO L482 AbstractCegarLoop]: Abstraction has has 36 places, 17 transitions, 70 flow [2021-08-13 12:50:53,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,256 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:53,256 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:53,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 12:50:53,256 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:53,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:53,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1342182221, now seen corresponding path program 1 times [2021-08-13 12:50:53,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:53,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135039829] [2021-08-13 12:50:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:53,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:53,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:53,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:50:53,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:50:53,364 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:50:53,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:50:53,389 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:53,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:53,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:53,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135039829] [2021-08-13 12:50:53,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135039829] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:53,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:53,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:53,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106745641] [2021-08-13 12:50:53,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:53,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:53,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:53,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:53,418 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:53,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 17 transitions, 70 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:53,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:53,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:53,496 INFO L129 PetriNetUnfolder]: 15/91 cut-off events. [2021-08-13 12:50:53,496 INFO L130 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2021-08-13 12:50:53,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 91 events. 15/91 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 462 event pairs, 5 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 152. Up to 17 conditions per place. [2021-08-13 12:50:53,500 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 9 selfloop transitions, 3 changer transitions 1/25 dead transitions. [2021-08-13 12:50:53,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 112 flow [2021-08-13 12:50:53,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:53,505 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:53,505 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:53,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:53,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:53,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:53,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,510 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,511 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2021-08-13 12:50:53,511 INFO L482 AbstractCegarLoop]: Abstraction has has 41 places, 25 transitions, 112 flow [2021-08-13 12:50:53,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,512 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:53,512 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:53,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 12:50:53,512 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:53,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:53,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1788203519, now seen corresponding path program 2 times [2021-08-13 12:50:53,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:53,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921499088] [2021-08-13 12:50:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:53,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:53,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:53,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:53,602 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:53,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:53,630 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:53,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:53,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:53,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921499088] [2021-08-13 12:50:53,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921499088] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:53,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:53,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:53,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057557546] [2021-08-13 12:50:53,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:53,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:53,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:53,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:53,645 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:53,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 25 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:53,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:53,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:53,693 INFO L129 PetriNetUnfolder]: 11/121 cut-off events. [2021-08-13 12:50:53,693 INFO L130 PetriNetUnfolder]: For 109/125 co-relation queries the response was YES. [2021-08-13 12:50:53,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 121 events. 11/121 cut-off events. For 109/125 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 712 event pairs, 1 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 231. Up to 23 conditions per place. [2021-08-13 12:50:53,694 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 17 selfloop transitions, 7 changer transitions 4/40 dead transitions. [2021-08-13 12:50:53,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 228 flow [2021-08-13 12:50:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:53,695 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:53,696 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:53,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:53,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:53,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:53,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,697 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2021-08-13 12:50:53,697 INFO L482 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 228 flow [2021-08-13 12:50:53,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,697 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:53,698 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:53,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 12:50:53,698 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:53,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:53,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1775956589, now seen corresponding path program 3 times [2021-08-13 12:50:53,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:53,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024406222] [2021-08-13 12:50:53,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:53,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:53,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:53,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:53,743 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:50:53,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:50:53,766 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:53,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:53,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:53,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024406222] [2021-08-13 12:50:53,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024406222] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:53,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:53,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:53,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898278812] [2021-08-13 12:50:53,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:53,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:53,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:53,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:53,785 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:53,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:53,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:53,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:53,841 INFO L129 PetriNetUnfolder]: 10/136 cut-off events. [2021-08-13 12:50:53,842 INFO L130 PetriNetUnfolder]: For 165/209 co-relation queries the response was YES. [2021-08-13 12:50:53,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 136 events. 10/136 cut-off events. For 165/209 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 858 event pairs, 0 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 304. Up to 27 conditions per place. [2021-08-13 12:50:53,844 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 24 selfloop transitions, 13 changer transitions 6/55 dead transitions. [2021-08-13 12:50:53,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 404 flow [2021-08-13 12:50:53,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:53,845 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:53,845 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:53,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:53,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:53,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:53,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,847 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,847 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2021-08-13 12:50:53,847 INFO L482 AbstractCegarLoop]: Abstraction has has 51 places, 55 transitions, 404 flow [2021-08-13 12:50:53,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,847 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:53,848 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:53,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 12:50:53,848 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:53,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:53,848 INFO L82 PathProgramCache]: Analyzing trace with hash -359152829, now seen corresponding path program 4 times [2021-08-13 12:50:53,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:53,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894130755] [2021-08-13 12:50:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:53,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:53,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:53,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:53,901 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:50:53,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:50:53,914 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:50:53,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:50:53,932 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:53,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:53,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:53,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894130755] [2021-08-13 12:50:53,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894130755] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:53,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:53,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:53,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034194704] [2021-08-13 12:50:53,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:53,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:53,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:53,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:53,948 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:53,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:53,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:53,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:53,993 INFO L129 PetriNetUnfolder]: 8/148 cut-off events. [2021-08-13 12:50:53,993 INFO L130 PetriNetUnfolder]: For 257/363 co-relation queries the response was YES. [2021-08-13 12:50:53,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 148 events. 8/148 cut-off events. For 257/363 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 988 event pairs, 0 based on Foata normal form. 8/154 useless extension candidates. Maximal degree in co-relation 374. Up to 29 conditions per place. [2021-08-13 12:50:53,994 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 32 selfloop transitions, 17 changer transitions 8/69 dead transitions. [2021-08-13 12:50:53,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 630 flow [2021-08-13 12:50:53,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:53,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:53,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:53,995 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:53,995 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:53,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:53,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:53,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:53,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,996 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,996 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2021-08-13 12:50:53,996 INFO L482 AbstractCegarLoop]: Abstraction has has 56 places, 69 transitions, 630 flow [2021-08-13 12:50:53,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:53,997 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:53,997 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:53,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 12:50:53,997 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:53,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:53,997 INFO L82 PathProgramCache]: Analyzing trace with hash 734938759, now seen corresponding path program 5 times [2021-08-13 12:50:53,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:53,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940127760] [2021-08-13 12:50:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:54,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:54,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:54,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:50:54,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:50:54,030 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:54,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:54,042 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:54,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:54,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:54,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940127760] [2021-08-13 12:50:54,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940127760] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:54,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:54,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:54,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140524377] [2021-08-13 12:50:54,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:54,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:54,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:54,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:54,059 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:54,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 69 transitions, 630 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:54,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:54,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:54,105 INFO L129 PetriNetUnfolder]: 6/157 cut-off events. [2021-08-13 12:50:54,105 INFO L130 PetriNetUnfolder]: For 376/535 co-relation queries the response was YES. [2021-08-13 12:50:54,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 157 events. 6/157 cut-off events. For 376/535 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1085 event pairs, 0 based on Foata normal form. 24/179 useless extension candidates. Maximal degree in co-relation 437. Up to 31 conditions per place. [2021-08-13 12:50:54,106 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 33 selfloop transitions, 15 changer transitions 11/71 dead transitions. [2021-08-13 12:50:54,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 768 flow [2021-08-13 12:50:54,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:54,107 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:54,107 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:54,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,108 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,109 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2021-08-13 12:50:54,109 INFO L482 AbstractCegarLoop]: Abstraction has has 61 places, 71 transitions, 768 flow [2021-08-13 12:50:54,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,109 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:54,109 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:54,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 12:50:54,109 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:54,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1216687559, now seen corresponding path program 6 times [2021-08-13 12:50:54,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:54,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774373586] [2021-08-13 12:50:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:54,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:54,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:54,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:54,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:54,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:54,147 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:54,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:54,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:54,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:54,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774373586] [2021-08-13 12:50:54,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774373586] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:54,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:54,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:54,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198421647] [2021-08-13 12:50:54,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:54,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:54,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:54,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:54,160 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:54,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 71 transitions, 768 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:54,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:54,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:54,204 INFO L129 PetriNetUnfolder]: 5/163 cut-off events. [2021-08-13 12:50:54,204 INFO L130 PetriNetUnfolder]: For 454/528 co-relation queries the response was YES. [2021-08-13 12:50:54,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 163 events. 5/163 cut-off events. For 454/528 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1170 event pairs, 0 based on Foata normal form. 7/168 useless extension candidates. Maximal degree in co-relation 501. Up to 32 conditions per place. [2021-08-13 12:50:54,205 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 32 selfloop transitions, 15 changer transitions 13/72 dead transitions. [2021-08-13 12:50:54,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 900 flow [2021-08-13 12:50:54,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:54,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:54,206 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:54,206 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:54,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,207 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,207 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2021-08-13 12:50:54,208 INFO L482 AbstractCegarLoop]: Abstraction has has 66 places, 72 transitions, 900 flow [2021-08-13 12:50:54,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,208 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:54,208 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:54,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 12:50:54,208 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:54,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:54,209 INFO L82 PathProgramCache]: Analyzing trace with hash 29145747, now seen corresponding path program 7 times [2021-08-13 12:50:54,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:54,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449567129] [2021-08-13 12:50:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:54,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:54,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:54,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:54,233 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:50:54,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:50:54,244 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:54,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:54,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:54,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449567129] [2021-08-13 12:50:54,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449567129] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:54,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:54,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:54,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786005663] [2021-08-13 12:50:54,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:54,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:54,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:54,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:54,257 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:54,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 72 transitions, 900 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:54,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:54,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:54,293 INFO L129 PetriNetUnfolder]: 5/162 cut-off events. [2021-08-13 12:50:54,293 INFO L130 PetriNetUnfolder]: For 559/645 co-relation queries the response was YES. [2021-08-13 12:50:54,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 162 events. 5/162 cut-off events. For 559/645 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1163 event pairs, 0 based on Foata normal form. 7/167 useless extension candidates. Maximal degree in co-relation 551. Up to 31 conditions per place. [2021-08-13 12:50:54,294 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 29 selfloop transitions, 14 changer transitions 16/71 dead transitions. [2021-08-13 12:50:54,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 1004 flow [2021-08-13 12:50:54,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:54,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:54,295 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:54,295 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:54,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,297 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,298 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2021-08-13 12:50:54,298 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 1004 flow [2021-08-13 12:50:54,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,298 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:54,298 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:54,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 12:50:54,298 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:54,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:54,299 INFO L82 PathProgramCache]: Analyzing trace with hash -113651105, now seen corresponding path program 8 times [2021-08-13 12:50:54,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:54,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732712018] [2021-08-13 12:50:54,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:54,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:54,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:54,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:54,337 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:54,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:54,350 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:54,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:54,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:54,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732712018] [2021-08-13 12:50:54,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732712018] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:54,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:54,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:54,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473341636] [2021-08-13 12:50:54,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:54,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:54,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:54,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:54,365 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:54,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 1004 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:54,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:54,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:54,437 INFO L129 PetriNetUnfolder]: 5/161 cut-off events. [2021-08-13 12:50:54,437 INFO L130 PetriNetUnfolder]: For 782/1009 co-relation queries the response was YES. [2021-08-13 12:50:54,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 161 events. 5/161 cut-off events. For 782/1009 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1150 event pairs, 0 based on Foata normal form. 10/169 useless extension candidates. Maximal degree in co-relation 601. Up to 30 conditions per place. [2021-08-13 12:50:54,438 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 26 selfloop transitions, 14 changer transitions 18/70 dead transitions. [2021-08-13 12:50:54,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 1104 flow [2021-08-13 12:50:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:54,439 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:54,439 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:54,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,441 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,441 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2021-08-13 12:50:54,441 INFO L482 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 1104 flow [2021-08-13 12:50:54,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,441 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:54,441 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:54,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 12:50:54,441 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:54,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:54,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1761961241, now seen corresponding path program 9 times [2021-08-13 12:50:54,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:54,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549155167] [2021-08-13 12:50:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:54,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:54,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:54,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:54,478 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:54,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:54,493 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:54,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:54,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:54,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549155167] [2021-08-13 12:50:54,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549155167] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:54,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:54,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:54,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994494477] [2021-08-13 12:50:54,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:54,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:54,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:54,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:54,510 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:54,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 1104 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:54,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:54,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:54,566 INFO L129 PetriNetUnfolder]: 5/160 cut-off events. [2021-08-13 12:50:54,566 INFO L130 PetriNetUnfolder]: For 989/1241 co-relation queries the response was YES. [2021-08-13 12:50:54,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 160 events. 5/160 cut-off events. For 989/1241 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1138 event pairs, 0 based on Foata normal form. 9/167 useless extension candidates. Maximal degree in co-relation 651. Up to 29 conditions per place. [2021-08-13 12:50:54,567 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 24 selfloop transitions, 11 changer transitions 22/69 dead transitions. [2021-08-13 12:50:54,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 69 transitions, 1200 flow [2021-08-13 12:50:54,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:54,568 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:54,568 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:54,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,570 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,570 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2021-08-13 12:50:54,570 INFO L482 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 1200 flow [2021-08-13 12:50:54,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,570 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:54,570 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:54,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 12:50:54,570 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:54,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1137980067, now seen corresponding path program 10 times [2021-08-13 12:50:54,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:54,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137871078] [2021-08-13 12:50:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:54,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:54,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:54,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:50:54,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:50:54,605 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:54,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:54,622 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:54,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:54,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:54,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137871078] [2021-08-13 12:50:54,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137871078] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:54,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:54,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:54,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503841481] [2021-08-13 12:50:54,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:54,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:54,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:54,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:54,636 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:54,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 1200 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:54,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:54,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:54,693 INFO L129 PetriNetUnfolder]: 5/159 cut-off events. [2021-08-13 12:50:54,693 INFO L130 PetriNetUnfolder]: For 1123/1406 co-relation queries the response was YES. [2021-08-13 12:50:54,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 159 events. 5/159 cut-off events. For 1123/1406 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1127 event pairs, 0 based on Foata normal form. 8/165 useless extension candidates. Maximal degree in co-relation 701. Up to 29 conditions per place. [2021-08-13 12:50:54,694 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 20 selfloop transitions, 11 changer transitions 25/68 dead transitions. [2021-08-13 12:50:54,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 68 transitions, 1292 flow [2021-08-13 12:50:54,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:54,695 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:54,695 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:54,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,697 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2021-08-13 12:50:54,697 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 68 transitions, 1292 flow [2021-08-13 12:50:54,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,697 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:54,697 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:54,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 12:50:54,698 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:54,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:54,698 INFO L82 PathProgramCache]: Analyzing trace with hash 40448749, now seen corresponding path program 11 times [2021-08-13 12:50:54,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:54,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54366205] [2021-08-13 12:50:54,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:54,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:54,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:54,727 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:54,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:54,744 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:50:54,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:50:54,764 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:54,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:54,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:54,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54366205] [2021-08-13 12:50:54,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54366205] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:54,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:54,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:54,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193880513] [2021-08-13 12:50:54,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:54,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:54,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:54,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:54,785 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:54,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 68 transitions, 1292 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:54,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:54,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:54,838 INFO L129 PetriNetUnfolder]: 3/185 cut-off events. [2021-08-13 12:50:54,838 INFO L130 PetriNetUnfolder]: For 1120/1212 co-relation queries the response was YES. [2021-08-13 12:50:54,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 185 events. 3/185 cut-off events. For 1120/1212 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1420 event pairs, 0 based on Foata normal form. 5/188 useless extension candidates. Maximal degree in co-relation 842. Up to 31 conditions per place. [2021-08-13 12:50:54,839 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 24 selfloop transitions, 12 changer transitions 27/75 dead transitions. [2021-08-13 12:50:54,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 75 transitions, 1572 flow [2021-08-13 12:50:54,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:54,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:54,841 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:54,842 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:54,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,843 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,843 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2021-08-13 12:50:54,843 INFO L482 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 1572 flow [2021-08-13 12:50:54,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,843 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:54,843 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:54,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 12:50:54,843 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:54,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:54,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1303130891, now seen corresponding path program 12 times [2021-08-13 12:50:54,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:54,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920128013] [2021-08-13 12:50:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:54,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:54,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:54,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:54,871 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:54,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:54,884 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:50:54,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:50:54,897 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:54,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:54,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:54,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920128013] [2021-08-13 12:50:54,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920128013] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:54,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:54,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:54,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623353906] [2021-08-13 12:50:54,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:54,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:54,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:54,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:54,910 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:54,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 1572 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:54,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:54,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:54,962 INFO L129 PetriNetUnfolder]: 3/184 cut-off events. [2021-08-13 12:50:54,962 INFO L130 PetriNetUnfolder]: For 1389/1592 co-relation queries the response was YES. [2021-08-13 12:50:54,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 184 events. 3/184 cut-off events. For 1389/1592 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1416 event pairs, 0 based on Foata normal form. 9/191 useless extension candidates. Maximal degree in co-relation 897. Up to 30 conditions per place. [2021-08-13 12:50:54,963 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 21 selfloop transitions, 11 changer transitions 30/74 dead transitions. [2021-08-13 12:50:54,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 74 transitions, 1672 flow [2021-08-13 12:50:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:54,964 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:54,964 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:54,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:54,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,965 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,965 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2021-08-13 12:50:54,965 INFO L482 AbstractCegarLoop]: Abstraction has has 96 places, 74 transitions, 1672 flow [2021-08-13 12:50:54,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:54,966 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:54,966 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:54,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 12:50:54,966 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:54,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:54,966 INFO L82 PathProgramCache]: Analyzing trace with hash 452844333, now seen corresponding path program 13 times [2021-08-13 12:50:54,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:54,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451770857] [2021-08-13 12:50:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:55,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:55,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:55,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:55,016 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:55,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:55,031 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:55,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:55,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:55,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451770857] [2021-08-13 12:50:55,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451770857] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:55,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:55,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:55,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444924502] [2021-08-13 12:50:55,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:55,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:55,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:55,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:55,047 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:55,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 74 transitions, 1672 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:55,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:55,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:55,100 INFO L129 PetriNetUnfolder]: 1/210 cut-off events. [2021-08-13 12:50:55,100 INFO L130 PetriNetUnfolder]: For 1739/1875 co-relation queries the response was YES. [2021-08-13 12:50:55,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 210 events. 1/210 cut-off events. For 1739/1875 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1716 event pairs, 0 based on Foata normal form. 5/213 useless extension candidates. Maximal degree in co-relation 1053. Up to 34 conditions per place. [2021-08-13 12:50:55,101 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 25 selfloop transitions, 12 changer transitions 32/81 dead transitions. [2021-08-13 12:50:55,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 81 transitions, 1992 flow [2021-08-13 12:50:55,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:55,102 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:55,102 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:55,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:55,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:55,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:55,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,103 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,103 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2021-08-13 12:50:55,103 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 1992 flow [2021-08-13 12:50:55,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,103 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:55,103 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:55,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 12:50:55,103 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:55,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:55,104 INFO L82 PathProgramCache]: Analyzing trace with hash -495604779, now seen corresponding path program 14 times [2021-08-13 12:50:55,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:55,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066264291] [2021-08-13 12:50:55,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:55,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:55,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:55,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:55,128 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:50:55,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:50:55,142 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:55,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:55,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:55,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066264291] [2021-08-13 12:50:55,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066264291] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:55,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:55,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:55,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934995822] [2021-08-13 12:50:55,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:55,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:55,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:55,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:55,155 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:55,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 1992 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:55,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:55,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:55,198 INFO L129 PetriNetUnfolder]: 1/209 cut-off events. [2021-08-13 12:50:55,198 INFO L130 PetriNetUnfolder]: For 1927/2079 co-relation queries the response was YES. [2021-08-13 12:50:55,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1336 conditions, 209 events. 1/209 cut-off events. For 1927/2079 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1717 event pairs, 0 based on Foata normal form. 5/212 useless extension candidates. Maximal degree in co-relation 1113. Up to 33 conditions per place. [2021-08-13 12:50:55,199 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 24 selfloop transitions, 8 changer transitions 36/80 dead transitions. [2021-08-13 12:50:55,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 80 transitions, 2100 flow [2021-08-13 12:50:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-08-13 12:50:55,200 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8904761904761904 [2021-08-13 12:50:55,200 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-08-13 12:50:55,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-08-13 12:50:55,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:55,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-08-13 12:50:55,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,201 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,201 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2021-08-13 12:50:55,201 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 80 transitions, 2100 flow [2021-08-13 12:50:55,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,201 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:55,202 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:55,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 12:50:55,202 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:55,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:55,202 INFO L82 PathProgramCache]: Analyzing trace with hash -564567633, now seen corresponding path program 15 times [2021-08-13 12:50:55,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:55,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945939035] [2021-08-13 12:50:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:55,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:55,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:55,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:55,227 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:55,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:55,238 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:55,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:55,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:55,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945939035] [2021-08-13 12:50:55,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945939035] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:55,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:55,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:55,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159822930] [2021-08-13 12:50:55,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:55,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:55,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:55,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:55,251 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:55,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 80 transitions, 2100 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:55,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:55,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:55,306 INFO L129 PetriNetUnfolder]: 1/208 cut-off events. [2021-08-13 12:50:55,306 INFO L130 PetriNetUnfolder]: For 2229/2510 co-relation queries the response was YES. [2021-08-13 12:50:55,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 208 events. 1/208 cut-off events. For 2229/2510 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1700 event pairs, 0 based on Foata normal form. 1/207 useless extension candidates. Maximal degree in co-relation 1173. Up to 33 conditions per place. [2021-08-13 12:50:55,307 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 17 selfloop transitions, 11 changer transitions 39/79 dead transitions. [2021-08-13 12:50:55,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 79 transitions, 2204 flow [2021-08-13 12:50:55,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:55,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:55,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:55,308 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:55,308 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:55,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:55,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:55,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:55,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,310 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,311 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2021-08-13 12:50:55,311 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 79 transitions, 2204 flow [2021-08-13 12:50:55,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,311 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:55,311 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:55,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 12:50:55,311 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:55,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:55,311 INFO L82 PathProgramCache]: Analyzing trace with hash 653581197, now seen corresponding path program 16 times [2021-08-13 12:50:55,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:55,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618385119] [2021-08-13 12:50:55,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:55,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:55,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:55,329 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:55,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:55,342 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:50:55,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:50:55,360 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:55,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:55,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:55,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618385119] [2021-08-13 12:50:55,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618385119] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:55,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:55,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:55,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575495490] [2021-08-13 12:50:55,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:55,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:55,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:55,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:55,373 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:55,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 79 transitions, 2204 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:55,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:55,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:55,421 INFO L129 PetriNetUnfolder]: 1/207 cut-off events. [2021-08-13 12:50:55,421 INFO L130 PetriNetUnfolder]: For 2143/2335 co-relation queries the response was YES. [2021-08-13 12:50:55,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 207 events. 1/207 cut-off events. For 2143/2335 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1684 event pairs, 0 based on Foata normal form. 1/206 useless extension candidates. Maximal degree in co-relation 1233. Up to 32 conditions per place. [2021-08-13 12:50:55,422 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 16 selfloop transitions, 9 changer transitions 41/78 dead transitions. [2021-08-13 12:50:55,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 78 transitions, 2304 flow [2021-08-13 12:50:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:55,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:55,423 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:55,423 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:55,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:55,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:55,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:55,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,438 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,438 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2021-08-13 12:50:55,438 INFO L482 AbstractCegarLoop]: Abstraction has has 116 places, 78 transitions, 2304 flow [2021-08-13 12:50:55,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,438 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:55,438 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:55,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 12:50:55,439 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:55,439 INFO L82 PathProgramCache]: Analyzing trace with hash 956423449, now seen corresponding path program 17 times [2021-08-13 12:50:55,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:55,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234956809] [2021-08-13 12:50:55,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:55,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:55,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:55,455 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:55,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:55,467 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:50:55,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:50:55,479 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:55,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:55,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:55,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234956809] [2021-08-13 12:50:55,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234956809] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:55,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:55,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:55,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962803696] [2021-08-13 12:50:55,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:55,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:55,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:55,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:55,491 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:55,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 78 transitions, 2304 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:55,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:55,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:55,533 INFO L129 PetriNetUnfolder]: 1/206 cut-off events. [2021-08-13 12:50:55,533 INFO L130 PetriNetUnfolder]: For 2441/2777 co-relation queries the response was YES. [2021-08-13 12:50:55,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 206 events. 1/206 cut-off events. For 2441/2777 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1680 event pairs, 0 based on Foata normal form. 6/210 useless extension candidates. Maximal degree in co-relation 1293. Up to 32 conditions per place. [2021-08-13 12:50:55,534 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 13 selfloop transitions, 8 changer transitions 44/77 dead transitions. [2021-08-13 12:50:55,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 77 transitions, 2400 flow [2021-08-13 12:50:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:55,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 12:50:55,535 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 12:50:55,535 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 12:50:55,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 12:50:55,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:55,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 12:50:55,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,536 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,536 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2021-08-13 12:50:55,536 INFO L482 AbstractCegarLoop]: Abstraction has has 121 places, 77 transitions, 2400 flow [2021-08-13 12:50:55,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,536 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:55,536 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:55,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 12:50:55,537 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:55,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:55,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1492243695, now seen corresponding path program 18 times [2021-08-13 12:50:55,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:55,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976521066] [2021-08-13 12:50:55,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:55,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:55,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:55,556 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:50:55,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:50:55,563 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:50:55,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:50:55,574 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:55,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:55,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:55,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976521066] [2021-08-13 12:50:55,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976521066] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:55,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:55,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:55,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70610794] [2021-08-13 12:50:55,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:55,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:55,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:55,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:55,586 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:55,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 77 transitions, 2400 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:55,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:55,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:55,637 INFO L129 PetriNetUnfolder]: 0/224 cut-off events. [2021-08-13 12:50:55,638 INFO L130 PetriNetUnfolder]: For 2788/3084 co-relation queries the response was YES. [2021-08-13 12:50:55,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 224 events. 0/224 cut-off events. For 2788/3084 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1889 event pairs, 0 based on Foata normal form. 1/223 useless extension candidates. Maximal degree in co-relation 0. Up to 36 conditions per place. [2021-08-13 12:50:55,639 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 17 selfloop transitions, 7 changer transitions 46/82 dead transitions. [2021-08-13 12:50:55,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 82 transitions, 2720 flow [2021-08-13 12:50:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-08-13 12:50:55,640 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8904761904761904 [2021-08-13 12:50:55,640 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-08-13 12:50:55,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-08-13 12:50:55,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:55,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-08-13 12:50:55,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,645 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,645 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2021-08-13 12:50:55,645 INFO L482 AbstractCegarLoop]: Abstraction has has 126 places, 82 transitions, 2720 flow [2021-08-13 12:50:55,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,645 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:55,645 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:55,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 12:50:55,646 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:55,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1982028989, now seen corresponding path program 19 times [2021-08-13 12:50:55,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:55,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084560870] [2021-08-13 12:50:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:55,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:55,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:55,672 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:50:55,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:50:55,679 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:55,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:55,690 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:55,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:55,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:55,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084560870] [2021-08-13 12:50:55,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084560870] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:55,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:55,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:55,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632007961] [2021-08-13 12:50:55,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:55,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:55,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:55,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:55,702 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:55,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 82 transitions, 2720 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:55,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:55,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:55,755 INFO L129 PetriNetUnfolder]: 0/223 cut-off events. [2021-08-13 12:50:55,755 INFO L130 PetriNetUnfolder]: For 3144/3584 co-relation queries the response was YES. [2021-08-13 12:50:55,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1728 conditions, 223 events. 0/223 cut-off events. For 3144/3584 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1877 event pairs, 0 based on Foata normal form. 6/227 useless extension candidates. Maximal degree in co-relation 0. Up to 35 conditions per place. [2021-08-13 12:50:55,756 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 15 selfloop transitions, 4 changer transitions 50/81 dead transitions. [2021-08-13 12:50:55,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 81 transitions, 2820 flow [2021-08-13 12:50:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2021-08-13 12:50:55,758 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2021-08-13 12:50:55,758 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 186 transitions. [2021-08-13 12:50:55,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 186 transitions. [2021-08-13 12:50:55,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:55,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 186 transitions. [2021-08-13 12:50:55,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,759 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,759 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2021-08-13 12:50:55,759 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 81 transitions, 2820 flow [2021-08-13 12:50:55,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,759 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:55,759 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:55,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 12:50:55,759 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:55,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:55,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1776475545, now seen corresponding path program 20 times [2021-08-13 12:50:55,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:55,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281149669] [2021-08-13 12:50:55,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:55,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:55,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:55,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:55,783 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:50:55,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:50:55,796 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:55,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:55,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:55,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281149669] [2021-08-13 12:50:55,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281149669] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:55,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:55,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:55,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971004985] [2021-08-13 12:50:55,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:55,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:55,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:55,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:55,811 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:55,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 81 transitions, 2820 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:55,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:55,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:55,855 INFO L129 PetriNetUnfolder]: 0/222 cut-off events. [2021-08-13 12:50:55,855 INFO L130 PetriNetUnfolder]: For 3149/3549 co-relation queries the response was YES. [2021-08-13 12:50:55,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 222 events. 0/222 cut-off events. For 3149/3549 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1873 event pairs, 0 based on Foata normal form. 1/221 useless extension candidates. Maximal degree in co-relation 0. Up to 34 conditions per place. [2021-08-13 12:50:55,856 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 9 selfloop transitions, 7 changer transitions 52/80 dead transitions. [2021-08-13 12:50:55,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 80 transitions, 2916 flow [2021-08-13 12:50:55,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:55,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-08-13 12:50:55,858 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8904761904761904 [2021-08-13 12:50:55,858 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-08-13 12:50:55,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-08-13 12:50:55,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:55,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-08-13 12:50:55,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,860 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,860 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2021-08-13 12:50:55,860 INFO L482 AbstractCegarLoop]: Abstraction has has 136 places, 80 transitions, 2916 flow [2021-08-13 12:50:55,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,861 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:55,861 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:55,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 12:50:55,861 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:55,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:55,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1525309647, now seen corresponding path program 21 times [2021-08-13 12:50:55,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:55,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434335609] [2021-08-13 12:50:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:55,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:55,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:55,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:55,898 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:55,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:55,909 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:55,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:55,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:55,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:55,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434335609] [2021-08-13 12:50:55,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434335609] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:55,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:55,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:55,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816697428] [2021-08-13 12:50:55,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:55,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:55,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:55,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:55,920 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:55,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 80 transitions, 2916 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:55,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:55,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:55,969 INFO L129 PetriNetUnfolder]: 0/221 cut-off events. [2021-08-13 12:50:55,969 INFO L130 PetriNetUnfolder]: For 3313/3765 co-relation queries the response was YES. [2021-08-13 12:50:55,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1824 conditions, 221 events. 0/221 cut-off events. For 3313/3765 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1870 event pairs, 0 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 0. Up to 33 conditions per place. [2021-08-13 12:50:55,970 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 7 selfloop transitions, 5 changer transitions 55/79 dead transitions. [2021-08-13 12:50:55,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 79 transitions, 3008 flow [2021-08-13 12:50:55,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:55,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:55,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-08-13 12:50:55,971 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8904761904761904 [2021-08-13 12:50:55,971 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-08-13 12:50:55,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-08-13 12:50:55,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:55,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-08-13 12:50:55,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,971 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,972 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2021-08-13 12:50:55,972 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 79 transitions, 3008 flow [2021-08-13 12:50:55,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:55,972 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:55,972 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:55,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 12:50:55,972 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:55,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:55,972 INFO L82 PathProgramCache]: Analyzing trace with hash -557705213, now seen corresponding path program 22 times [2021-08-13 12:50:55,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:55,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874912339] [2021-08-13 12:50:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:55,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:55,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:55,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:55,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:50:56,003 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:56,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:56,015 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:56,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:56,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:56,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874912339] [2021-08-13 12:50:56,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874912339] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:56,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:56,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:56,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290444349] [2021-08-13 12:50:56,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:56,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:56,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:56,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:56,027 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:56,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 79 transitions, 3008 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:56,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:56,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:56,082 INFO L129 PetriNetUnfolder]: 0/220 cut-off events. [2021-08-13 12:50:56,082 INFO L130 PetriNetUnfolder]: For 4104/4860 co-relation queries the response was YES. [2021-08-13 12:50:56,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 220 events. 0/220 cut-off events. For 4104/4860 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1858 event pairs, 0 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 0. Up to 32 conditions per place. [2021-08-13 12:50:56,083 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 4 selfloop transitions, 4 changer transitions 58/78 dead transitions. [2021-08-13 12:50:56,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 78 transitions, 3096 flow [2021-08-13 12:50:56,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:56,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-08-13 12:50:56,084 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8904761904761904 [2021-08-13 12:50:56,084 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-08-13 12:50:56,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-08-13 12:50:56,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:56,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-08-13 12:50:56,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,085 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,085 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2021-08-13 12:50:56,085 INFO L482 AbstractCegarLoop]: Abstraction has has 146 places, 78 transitions, 3096 flow [2021-08-13 12:50:56,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,086 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:56,086 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:56,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 12:50:56,086 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:56,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:56,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1062900079, now seen corresponding path program 23 times [2021-08-13 12:50:56,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:56,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749487996] [2021-08-13 12:50:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:56,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:56,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:56,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:56,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:56,109 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:50:56,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:50:56,116 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:50:56,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:50:56,126 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:56,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:56,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:56,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749487996] [2021-08-13 12:50:56,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749487996] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:56,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:56,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:56,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203313406] [2021-08-13 12:50:56,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:56,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:56,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:56,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:56,139 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:56,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 78 transitions, 3096 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:56,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:56,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:56,193 INFO L129 PetriNetUnfolder]: 0/219 cut-off events. [2021-08-13 12:50:56,194 INFO L130 PetriNetUnfolder]: For 3894/4698 co-relation queries the response was YES. [2021-08-13 12:50:56,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1912 conditions, 219 events. 0/219 cut-off events. For 3894/4698 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1870 event pairs, 0 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 0. Up to 31 conditions per place. [2021-08-13 12:50:56,194 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 2 selfloop transitions, 3 changer transitions 60/77 dead transitions. [2021-08-13 12:50:56,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 77 transitions, 3180 flow [2021-08-13 12:50:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2021-08-13 12:50:56,195 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2021-08-13 12:50:56,195 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 186 transitions. [2021-08-13 12:50:56,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 186 transitions. [2021-08-13 12:50:56,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:56,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 186 transitions. [2021-08-13 12:50:56,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,196 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,196 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2021-08-13 12:50:56,196 INFO L482 AbstractCegarLoop]: Abstraction has has 151 places, 77 transitions, 3180 flow [2021-08-13 12:50:56,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,196 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:50:56,196 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:50:56,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 12:50:56,197 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:50:56,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:50:56,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1106179767, now seen corresponding path program 24 times [2021-08-13 12:50:56,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:50:56,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385483366] [2021-08-13 12:50:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:50:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:50:56,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:56,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:50:56,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:50:56,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:50:56,213 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:50:56,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:50:56,220 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:50:56,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:50:56,236 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 12:50:56,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 12:50:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:50:56,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:50:56,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385483366] [2021-08-13 12:50:56,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385483366] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:50:56,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:50:56,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:50:56,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429254634] [2021-08-13 12:50:56,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 12:50:56,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:50:56,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 12:50:56,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 12:50:56,247 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 12:50:56,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 77 transitions, 3180 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:50:56,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 12:50:56,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:50:56,289 INFO L129 PetriNetUnfolder]: 0/218 cut-off events. [2021-08-13 12:50:56,289 INFO L130 PetriNetUnfolder]: For 4189/4861 co-relation queries the response was YES. [2021-08-13 12:50:56,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 218 events. 0/218 cut-off events. For 4189/4861 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1864 event pairs, 0 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 0. Up to 30 conditions per place. [2021-08-13 12:50:56,290 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 0 selfloop transitions, 0 changer transitions 76/76 dead transitions. [2021-08-13 12:50:56,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 76 transitions, 3260 flow [2021-08-13 12:50:56,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 12:50:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 12:50:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2021-08-13 12:50:56,315 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2021-08-13 12:50:56,315 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 185 transitions. [2021-08-13 12:50:56,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 185 transitions. [2021-08-13 12:50:56,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:50:56,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 185 transitions. [2021-08-13 12:50:56,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,316 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,316 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2021-08-13 12:50:56,316 INFO L482 AbstractCegarLoop]: Abstraction has has 155 places, 76 transitions, 3260 flow [2021-08-13 12:50:56,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:50:56,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown