/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 08:16:50,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 08:16:50,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 08:16:50,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 08:16:50,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 08:16:50,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 08:16:50,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 08:16:50,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 08:16:50,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 08:16:50,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 08:16:50,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 08:16:50,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 08:16:50,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 08:16:50,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 08:16:50,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 08:16:50,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 08:16:50,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 08:16:50,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 08:16:50,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 08:16:50,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 08:16:50,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf [2021-08-13 08:16:50,717 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 08:16:50,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 08:16:50,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 08:16:50,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 08:16:50,719 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 08:16:50,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 08:16:50,719 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 08:16:50,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 08:16:50,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 08:16:50,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 08:16:50,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 08:16:50,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 08:16:50,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 08:16:50,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 08:16:50,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 08:16:50,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 08:16:50,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 08:16:50,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 08:16:50,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 08:16:50,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 08:16:50,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 08:16:50,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 08:16:50,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 08:16:50,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 08:16:50,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 08:16:50,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 08:16:50,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 08:16:50,723 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 08:16:50,724 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 08:16:50,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 08:16:50,724 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 08:16:50,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 08:16:50,724 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 08:16:51,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 08:16:51,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 08:16:51,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 08:16:51,077 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 08:16:51,079 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 08:16:51,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-08-13 08:16:51,080 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-08-13 08:16:51,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 08:16:51,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 08:16:51,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 08:16:51,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 08:16:51,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 08:16:51,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:16:51" (1/1) ... [2021-08-13 08:16:51,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:16:51" (1/1) ... [2021-08-13 08:16:51,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 08:16:51,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 08:16:51,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 08:16:51,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 08:16:51,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:16:51" (1/1) ... [2021-08-13 08:16:51,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:16:51" (1/1) ... [2021-08-13 08:16:51,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:16:51" (1/1) ... [2021-08-13 08:16:51,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:16:51" (1/1) ... [2021-08-13 08:16:51,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:16:51" (1/1) ... [2021-08-13 08:16:51,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:16:51" (1/1) ... [2021-08-13 08:16:51,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:16:51" (1/1) ... [2021-08-13 08:16:51,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 08:16:51,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 08:16:51,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 08:16:51,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 08:16:51,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:16:51" (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 08:16:51,326 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 08:16:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 08:16:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 08:16:51,327 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 08:16:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 08:16:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 08:16:51,328 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 08:16:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 08:16:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 08:16:51,328 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-13 08:16:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-13 08:16:51,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-13 08:16:51,330 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 08:16:51,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 08:16:51,624 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 08:16:51,626 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 08:16:51 BoogieIcfgContainer [2021-08-13 08:16:51,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 08:16:51,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 08:16:51,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 08:16:51,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 08:16:51,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:16:51" (1/2) ... [2021-08-13 08:16:51,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0e6b53 and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 08:16:51, skipping insertion in model container [2021-08-13 08:16:51,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 08:16:51" (2/2) ... [2021-08-13 08:16:51,632 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-08-13 08:16:51,659 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 08:16:51,660 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 08:16:51,661 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 08:16:51,743 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-08-13 08:16:51,783 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 08:16:51,819 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 08:16:51,820 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 08:16:51,820 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 08:16:51,820 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 08:16:51,820 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 08:16:51,820 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 08:16:51,820 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 08:16:51,828 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 08:16:51,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 53 transitions, 130 flow [2021-08-13 08:16:51,916 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-08-13 08:16:51,916 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-13 08:16:51,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 08:16:51,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 53 transitions, 130 flow [2021-08-13 08:16:51,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 48 transitions, 114 flow [2021-08-13 08:16:51,950 INFO L129 PetriNetUnfolder]: 0/47 cut-off events. [2021-08-13 08:16:51,950 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-13 08:16:51,950 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:16:51,951 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:16:51,951 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:16:51,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:16:51,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2013229232, now seen corresponding path program 1 times [2021-08-13 08:16:51,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:16:51,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104279641] [2021-08-13 08:16:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:16:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:16:52,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:52,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:52,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:52,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:52,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:52,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:52,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:52,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:52,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:52,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:52,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:52,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:52,455 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 08:16:52,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:52,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:52,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:52,477 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 08:16:52,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:16:52,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104279641] [2021-08-13 08:16:52,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104279641] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:16:52,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:16:52,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:16:52,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465889395] [2021-08-13 08:16:52,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:16:52,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:16:52,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:16:52,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:16:52,509 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-08-13 08:16:52,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 114 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:52,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:16:52,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-08-13 08:16:52,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:16:52,865 INFO L129 PetriNetUnfolder]: 29/215 cut-off events. [2021-08-13 08:16:52,865 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-08-13 08:16:52,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 215 events. 29/215 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1169 event pairs, 3 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 291. Up to 28 conditions per place. [2021-08-13 08:16:52,872 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 21 selfloop transitions, 15 changer transitions 2/78 dead transitions. [2021-08-13 08:16:52,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 250 flow [2021-08-13 08:16:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 08:16:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 08:16:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-08-13 08:16:52,892 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-08-13 08:16:52,893 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-08-13 08:16:52,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-08-13 08:16:52,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:16:52,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-08-13 08:16:52,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:52,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:52,919 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:52,920 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2021-08-13 08:16:52,920 INFO L482 AbstractCegarLoop]: Abstraction has has 68 places, 78 transitions, 250 flow [2021-08-13 08:16:52,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:52,920 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:16:52,921 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:16:52,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 08:16:52,921 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:16:52,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:16:52,922 INFO L82 PathProgramCache]: Analyzing trace with hash -99645260, now seen corresponding path program 2 times [2021-08-13 08:16:52,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:16:52,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385134967] [2021-08-13 08:16:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:16:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:16:53,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:53,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:16:53,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:53,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:16:53,049 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-08-13 08:16:53,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-08-13 08:16:53,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:53,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:16:53,094 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-08-13 08:16:53,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:16:53,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:53,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:53,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:53,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:16:53,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:53,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:53,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:16:53,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:16:53,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385134967] [2021-08-13 08:16:53,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385134967] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:16:53,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:16:53,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:16:53,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294052608] [2021-08-13 08:16:53,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:16:53,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:16:53,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:16:53,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:16:53,130 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:16:53,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 78 transitions, 250 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:53,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:16:53,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:16:53,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:16:53,904 INFO L129 PetriNetUnfolder]: 1281/3313 cut-off events. [2021-08-13 08:16:53,904 INFO L130 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2021-08-13 08:16:53,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5964 conditions, 3313 events. 1281/3313 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 27393 event pairs, 277 based on Foata normal form. 39/3219 useless extension candidates. Maximal degree in co-relation 5919. Up to 1219 conditions per place. [2021-08-13 08:16:53,932 INFO L132 encePairwiseOnDemand]: 39/53 looper letters, 83 selfloop transitions, 40 changer transitions 2/182 dead transitions. [2021-08-13 08:16:53,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 182 transitions, 704 flow [2021-08-13 08:16:53,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 08:16:53,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 08:16:53,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 557 transitions. [2021-08-13 08:16:53,936 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8084179970972424 [2021-08-13 08:16:53,936 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 557 transitions. [2021-08-13 08:16:53,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 557 transitions. [2021-08-13 08:16:53,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:16:53,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 557 transitions. [2021-08-13 08:16:53,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 42.84615384615385) internal successors, (557), 13 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:53,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:53,940 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:53,941 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 22 predicate places. [2021-08-13 08:16:53,941 INFO L482 AbstractCegarLoop]: Abstraction has has 80 places, 182 transitions, 704 flow [2021-08-13 08:16:53,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:53,941 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:16:53,941 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:16:53,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 08:16:53,942 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:16:53,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:16:53,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1866232154, now seen corresponding path program 3 times [2021-08-13 08:16:53,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:16:53,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002325508] [2021-08-13 08:16:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:16:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:16:53,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:53,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:53,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:53,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:53,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:53,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:53,966 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 08:16:53,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:16:53,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002325508] [2021-08-13 08:16:53,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002325508] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:16:53,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:16:53,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 08:16:53,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771916360] [2021-08-13 08:16:53,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 08:16:53,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:16:53,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 08:16:53,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 08:16:53,969 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-08-13 08:16:53,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 182 transitions, 704 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:53,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:16:53,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-08-13 08:16:53,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:16:54,345 INFO L129 PetriNetUnfolder]: 1331/3454 cut-off events. [2021-08-13 08:16:54,346 INFO L130 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2021-08-13 08:16:54,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6349 conditions, 3454 events. 1331/3454 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 28590 event pairs, 429 based on Foata normal form. 74/3378 useless extension candidates. Maximal degree in co-relation 6302. Up to 1306 conditions per place. [2021-08-13 08:16:54,374 INFO L132 encePairwiseOnDemand]: 49/53 looper letters, 3 selfloop transitions, 2 changer transitions 2/180 dead transitions. [2021-08-13 08:16:54,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 180 transitions, 706 flow [2021-08-13 08:16:54,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 08:16:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 08:16:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2021-08-13 08:16:54,376 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2021-08-13 08:16:54,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2021-08-13 08:16:54,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2021-08-13 08:16:54,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:16:54,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2021-08-13 08:16:54,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:54,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:54,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:54,378 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2021-08-13 08:16:54,378 INFO L482 AbstractCegarLoop]: Abstraction has has 82 places, 180 transitions, 706 flow [2021-08-13 08:16:54,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:54,379 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:16:54,379 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:16:54,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 08:16:54,379 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:16:54,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:16:54,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1016085346, now seen corresponding path program 4 times [2021-08-13 08:16:54,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:16:54,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903643130] [2021-08-13 08:16:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:16:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:16:54,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:54,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:54,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:54,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:54,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:54,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:54,403 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 08:16:54,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:16:54,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903643130] [2021-08-13 08:16:54,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903643130] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:16:54,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:16:54,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 08:16:54,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160178891] [2021-08-13 08:16:54,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 08:16:54,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:16:54,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 08:16:54,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 08:16:54,405 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-08-13 08:16:54,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 180 transitions, 706 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:54,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:16:54,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-08-13 08:16:54,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:16:54,720 INFO L129 PetriNetUnfolder]: 1439/3711 cut-off events. [2021-08-13 08:16:54,721 INFO L130 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2021-08-13 08:16:54,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6976 conditions, 3711 events. 1439/3711 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 31412 event pairs, 604 based on Foata normal form. 67/3595 useless extension candidates. Maximal degree in co-relation 6927. Up to 1437 conditions per place. [2021-08-13 08:16:54,752 INFO L132 encePairwiseOnDemand]: 49/53 looper letters, 3 selfloop transitions, 2 changer transitions 2/180 dead transitions. [2021-08-13 08:16:54,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 180 transitions, 716 flow [2021-08-13 08:16:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 08:16:54,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 08:16:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2021-08-13 08:16:54,754 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2021-08-13 08:16:54,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2021-08-13 08:16:54,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2021-08-13 08:16:54,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:16:54,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2021-08-13 08:16:54,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:54,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:54,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:54,756 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2021-08-13 08:16:54,756 INFO L482 AbstractCegarLoop]: Abstraction has has 84 places, 180 transitions, 716 flow [2021-08-13 08:16:54,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:54,756 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:16:54,757 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:16:54,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 08:16:54,757 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:16:54,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:16:54,757 INFO L82 PathProgramCache]: Analyzing trace with hash -789570444, now seen corresponding path program 5 times [2021-08-13 08:16:54,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:16:54,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012498253] [2021-08-13 08:16:54,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:16:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:16:54,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:54,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:54,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:54,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:54,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:54,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:54,815 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 08:16:54,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:16:54,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012498253] [2021-08-13 08:16:54,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012498253] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:16:54,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:16:54,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 08:16:54,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78198975] [2021-08-13 08:16:54,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 08:16:54,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:16:54,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 08:16:54,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 08:16:54,817 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-08-13 08:16:54,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 180 transitions, 716 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:54,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:16:54,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-08-13 08:16:54,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:16:55,162 INFO L129 PetriNetUnfolder]: 1548/4089 cut-off events. [2021-08-13 08:16:55,162 INFO L130 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2021-08-13 08:16:55,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7811 conditions, 4089 events. 1548/4089 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 35523 event pairs, 720 based on Foata normal form. 42/3912 useless extension candidates. Maximal degree in co-relation 7760. Up to 1608 conditions per place. [2021-08-13 08:16:55,198 INFO L132 encePairwiseOnDemand]: 49/53 looper letters, 3 selfloop transitions, 2 changer transitions 2/180 dead transitions. [2021-08-13 08:16:55,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 180 transitions, 726 flow [2021-08-13 08:16:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 08:16:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 08:16:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2021-08-13 08:16:55,200 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2021-08-13 08:16:55,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2021-08-13 08:16:55,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2021-08-13 08:16:55,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:16:55,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2021-08-13 08:16:55,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:55,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:55,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:55,202 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2021-08-13 08:16:55,202 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 180 transitions, 726 flow [2021-08-13 08:16:55,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:55,202 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:16:55,203 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:16:55,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 08:16:55,203 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:16:55,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:16:55,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1070790412, now seen corresponding path program 6 times [2021-08-13 08:16:55,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:16:55,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395768136] [2021-08-13 08:16:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:16:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:16:55,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:55,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:16:55,292 INFO L142 QuantifierPusher]: treesize reduction 25, result has 44.4 percent of original size [2021-08-13 08:16:55,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-08-13 08:16:55,298 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-08-13 08:16:55,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:55,305 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-08-13 08:16:55,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:55,308 INFO L142 QuantifierPusher]: treesize reduction 15, result has 48.3 percent of original size [2021-08-13 08:16:55,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:16:55,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:55,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:55,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:55,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:55,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:55,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:55,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:55,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:55,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:55,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:16:55,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:16:55,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395768136] [2021-08-13 08:16:55,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395768136] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:16:55,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:16:55,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:16:55,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609236629] [2021-08-13 08:16:55,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:16:55,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:16:55,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:16:55,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:16:55,373 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:16:55,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 180 transitions, 726 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:55,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:16:55,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:16:55,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:16:56,083 INFO L129 PetriNetUnfolder]: 1981/4874 cut-off events. [2021-08-13 08:16:56,083 INFO L130 PetriNetUnfolder]: For 1006/1646 co-relation queries the response was YES. [2021-08-13 08:16:56,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12386 conditions, 4874 events. 1981/4874 cut-off events. For 1006/1646 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 42239 event pairs, 446 based on Foata normal form. 91/4738 useless extension candidates. Maximal degree in co-relation 12333. Up to 2092 conditions per place. [2021-08-13 08:16:56,125 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 165 selfloop transitions, 42 changer transitions 2/266 dead transitions. [2021-08-13 08:16:56,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 266 transitions, 1484 flow [2021-08-13 08:16:56,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 08:16:56,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 08:16:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 337 transitions. [2021-08-13 08:16:56,127 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7948113207547169 [2021-08-13 08:16:56,127 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 337 transitions. [2021-08-13 08:16:56,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 337 transitions. [2021-08-13 08:16:56,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:16:56,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 337 transitions. [2021-08-13 08:16:56,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.125) internal successors, (337), 8 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:56,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:56,130 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:56,130 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 35 predicate places. [2021-08-13 08:16:56,130 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 266 transitions, 1484 flow [2021-08-13 08:16:56,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:56,131 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:16:56,131 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:16:56,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 08:16:56,131 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:16:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:16:56,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1898931862, now seen corresponding path program 7 times [2021-08-13 08:16:56,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:16:56,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463732222] [2021-08-13 08:16:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:16:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:16:56,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:56,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-08-13 08:16:56,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:56,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 08:16:56,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:56,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:16:56,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:56,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:16:56,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:56,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:16:56,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:56,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:56,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:56,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:56,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:56,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:56,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:56,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:16:56,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:56,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:16:56,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:16:56,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463732222] [2021-08-13 08:16:56,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463732222] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:16:56,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:16:56,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 08:16:56,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405845255] [2021-08-13 08:16:56,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 08:16:56,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:16:56,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 08:16:56,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-08-13 08:16:56,286 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:16:56,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 266 transitions, 1484 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:56,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:16:56,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:16:56,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:16:57,309 INFO L129 PetriNetUnfolder]: 2845/6972 cut-off events. [2021-08-13 08:16:57,310 INFO L130 PetriNetUnfolder]: For 4487/6379 co-relation queries the response was YES. [2021-08-13 08:16:57,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21783 conditions, 6972 events. 2845/6972 cut-off events. For 4487/6379 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 64184 event pairs, 374 based on Foata normal form. 213/6917 useless extension candidates. Maximal degree in co-relation 21701. Up to 3066 conditions per place. [2021-08-13 08:16:57,390 INFO L132 encePairwiseOnDemand]: 40/53 looper letters, 292 selfloop transitions, 125 changer transitions 0/476 dead transitions. [2021-08-13 08:16:57,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 476 transitions, 3578 flow [2021-08-13 08:16:57,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 08:16:57,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 08:16:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 429 transitions. [2021-08-13 08:16:57,393 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.809433962264151 [2021-08-13 08:16:57,393 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 429 transitions. [2021-08-13 08:16:57,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 429 transitions. [2021-08-13 08:16:57,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:16:57,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 429 transitions. [2021-08-13 08:16:57,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.9) internal successors, (429), 10 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:57,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:57,399 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:57,399 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2021-08-13 08:16:57,399 INFO L482 AbstractCegarLoop]: Abstraction has has 102 places, 476 transitions, 3578 flow [2021-08-13 08:16:57,400 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:57,400 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:16:57,400 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:16:57,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 08:16:57,400 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:16:57,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:16:57,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1317854256, now seen corresponding path program 8 times [2021-08-13 08:16:57,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:16:57,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081654289] [2021-08-13 08:16:57,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:16:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:16:57,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:57,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:57,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:57,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:57,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:57,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:57,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:57,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:57,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:57,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:57,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:57,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:57,517 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 08:16:57,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:57,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:57,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:57,531 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 08:16:57,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:16:57,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081654289] [2021-08-13 08:16:57,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081654289] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:16:57,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:16:57,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:16:57,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633518199] [2021-08-13 08:16:57,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:16:57,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:16:57,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:16:57,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:16:57,534 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-08-13 08:16:57,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 476 transitions, 3578 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:57,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:16:57,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-08-13 08:16:57,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:16:58,841 INFO L129 PetriNetUnfolder]: 2959/7645 cut-off events. [2021-08-13 08:16:58,841 INFO L130 PetriNetUnfolder]: For 5430/7522 co-relation queries the response was YES. [2021-08-13 08:16:58,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25097 conditions, 7645 events. 2959/7645 cut-off events. For 5430/7522 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 72866 event pairs, 367 based on Foata normal form. 154/7536 useless extension candidates. Maximal degree in co-relation 24915. Up to 3347 conditions per place. [2021-08-13 08:16:58,913 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 44 selfloop transitions, 25 changer transitions 0/507 dead transitions. [2021-08-13 08:16:58,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 507 transitions, 3840 flow [2021-08-13 08:16:58,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 08:16:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 08:16:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-08-13 08:16:58,915 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-08-13 08:16:58,916 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-08-13 08:16:58,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-08-13 08:16:58,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:16:58,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-08-13 08:16:58,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:58,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:58,919 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:58,919 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 54 predicate places. [2021-08-13 08:16:58,919 INFO L482 AbstractCegarLoop]: Abstraction has has 112 places, 507 transitions, 3840 flow [2021-08-13 08:16:58,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:58,920 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:16:58,920 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:16:58,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 08:16:58,920 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:16:58,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:16:58,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1871065322, now seen corresponding path program 9 times [2021-08-13 08:16:58,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:16:58,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582119962] [2021-08-13 08:16:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:16:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:16:58,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:58,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:58,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:58,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:16:58,978 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-08-13 08:16:58,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:16:58,985 INFO L142 QuantifierPusher]: treesize reduction 36, result has 28.0 percent of original size [2021-08-13 08:16:58,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:16:58,999 INFO L142 QuantifierPusher]: treesize reduction 14, result has 56.3 percent of original size [2021-08-13 08:16:59,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-08-13 08:16:59,020 INFO L142 QuantifierPusher]: treesize reduction 24, result has 40.0 percent of original size [2021-08-13 08:16:59,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:16:59,037 INFO L142 QuantifierPusher]: treesize reduction 28, result has 30.0 percent of original size [2021-08-13 08:16:59,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:16:59,039 INFO L142 QuantifierPusher]: treesize reduction 22, result has 4.3 percent of original size [2021-08-13 08:16:59,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:59,040 INFO L142 QuantifierPusher]: treesize reduction 38, result has 2.6 percent of original size [2021-08-13 08:16:59,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:59,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:16:59,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:16:59,041 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 08:16:59,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:16:59,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582119962] [2021-08-13 08:16:59,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582119962] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:16:59,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:16:59,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 08:16:59,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624884068] [2021-08-13 08:16:59,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 08:16:59,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:16:59,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 08:16:59,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-13 08:16:59,043 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:16:59,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 507 transitions, 3840 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:16:59,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:16:59,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:16:59,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:17:00,753 INFO L129 PetriNetUnfolder]: 4623/12380 cut-off events. [2021-08-13 08:17:00,753 INFO L130 PetriNetUnfolder]: For 17314/23124 co-relation queries the response was YES. [2021-08-13 08:17:00,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46950 conditions, 12380 events. 4623/12380 cut-off events. For 17314/23124 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 131639 event pairs, 566 based on Foata normal form. 455/12341 useless extension candidates. Maximal degree in co-relation 46614. Up to 5518 conditions per place. [2021-08-13 08:17:00,879 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 621 selfloop transitions, 228 changer transitions 1/940 dead transitions. [2021-08-13 08:17:00,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 940 transitions, 9004 flow [2021-08-13 08:17:00,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 08:17:00,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 08:17:00,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 536 transitions. [2021-08-13 08:17:00,881 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8427672955974843 [2021-08-13 08:17:00,882 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 536 transitions. [2021-08-13 08:17:00,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 536 transitions. [2021-08-13 08:17:00,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:17:00,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 536 transitions. [2021-08-13 08:17:00,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 44.666666666666664) internal successors, (536), 12 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:00,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:00,885 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:00,885 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 65 predicate places. [2021-08-13 08:17:00,885 INFO L482 AbstractCegarLoop]: Abstraction has has 123 places, 940 transitions, 9004 flow [2021-08-13 08:17:00,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:00,886 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:17:00,886 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:17:00,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 08:17:00,886 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:17:00,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:17:00,887 INFO L82 PathProgramCache]: Analyzing trace with hash -876458430, now seen corresponding path program 10 times [2021-08-13 08:17:00,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:17:00,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438247418] [2021-08-13 08:17:00,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:17:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:17:00,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:00,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 08:17:00,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:00,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 08:17:00,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:00,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:17:00,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:00,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:00,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:00,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:17:00,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:00,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:00,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:00,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:00,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:00,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:00,998 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-08-13 08:17:00,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:01,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:01,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:01,008 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 08:17:01,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:17:01,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438247418] [2021-08-13 08:17:01,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438247418] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:17:01,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:17:01,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:17:01,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653440553] [2021-08-13 08:17:01,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:17:01,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:17:01,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:17:01,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:17:01,011 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:17:01,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 940 transitions, 9004 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:01,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:17:01,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:17:01,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:17:02,689 INFO L129 PetriNetUnfolder]: 3625/10352 cut-off events. [2021-08-13 08:17:02,690 INFO L130 PetriNetUnfolder]: For 21358/27509 co-relation queries the response was YES. [2021-08-13 08:17:02,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45021 conditions, 10352 events. 3625/10352 cut-off events. For 21358/27509 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 110577 event pairs, 478 based on Foata normal form. 560/10542 useless extension candidates. Maximal degree in co-relation 44683. Up to 4497 conditions per place. [2021-08-13 08:17:02,778 INFO L132 encePairwiseOnDemand]: 43/53 looper letters, 713 selfloop transitions, 141 changer transitions 4/946 dead transitions. [2021-08-13 08:17:02,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 946 transitions, 10776 flow [2021-08-13 08:17:02,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 08:17:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 08:17:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 369 transitions. [2021-08-13 08:17:02,780 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2021-08-13 08:17:02,781 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 369 transitions. [2021-08-13 08:17:02,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 369 transitions. [2021-08-13 08:17:02,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:17:02,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 369 transitions. [2021-08-13 08:17:02,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:02,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:02,783 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:02,783 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 73 predicate places. [2021-08-13 08:17:02,783 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 946 transitions, 10776 flow [2021-08-13 08:17:02,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:02,784 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:17:02,784 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:17:02,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 08:17:02,784 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:17:02,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:17:02,784 INFO L82 PathProgramCache]: Analyzing trace with hash 945415878, now seen corresponding path program 11 times [2021-08-13 08:17:02,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:17:02,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406786902] [2021-08-13 08:17:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:17:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:17:02,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:02,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:02,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:02,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:02,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:02,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:02,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:02,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:02,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:02,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:02,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:02,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:02,860 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 08:17:02,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:02,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:02,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:17:02,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:17:02,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406786902] [2021-08-13 08:17:02,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406786902] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:17:02,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:17:02,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:17:02,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392388359] [2021-08-13 08:17:02,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:17:02,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:17:02,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:17:02,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:17:02,875 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-08-13 08:17:02,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 946 transitions, 10776 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:02,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:17:02,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-08-13 08:17:02,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:17:04,603 INFO L129 PetriNetUnfolder]: 3678/10832 cut-off events. [2021-08-13 08:17:04,604 INFO L130 PetriNetUnfolder]: For 23070/28567 co-relation queries the response was YES. [2021-08-13 08:17:04,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48507 conditions, 10832 events. 3678/10832 cut-off events. For 23070/28567 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 117815 event pairs, 474 based on Foata normal form. 395/10850 useless extension candidates. Maximal degree in co-relation 47999. Up to 4695 conditions per place. [2021-08-13 08:17:04,675 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 49 selfloop transitions, 34 changer transitions 53/962 dead transitions. [2021-08-13 08:17:04,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 962 transitions, 11042 flow [2021-08-13 08:17:04,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 08:17:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 08:17:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-08-13 08:17:04,677 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-08-13 08:17:04,677 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-08-13 08:17:04,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-08-13 08:17:04,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:17:04,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-08-13 08:17:04,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:04,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:04,680 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:04,681 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 83 predicate places. [2021-08-13 08:17:04,681 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 962 transitions, 11042 flow [2021-08-13 08:17:04,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:04,681 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:17:04,681 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:17:04,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 08:17:04,682 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:17:04,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:17:04,682 INFO L82 PathProgramCache]: Analyzing trace with hash -516899344, now seen corresponding path program 12 times [2021-08-13 08:17:04,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:17:04,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679551702] [2021-08-13 08:17:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:17:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:17:04,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:04,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 08:17:04,742 INFO L142 QuantifierPusher]: treesize reduction 26, result has 59.4 percent of original size [2021-08-13 08:17:04,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-08-13 08:17:04,748 INFO L142 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-08-13 08:17:04,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:17:04,751 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-08-13 08:17:04,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:04,755 INFO L142 QuantifierPusher]: treesize reduction 7, result has 65.0 percent of original size [2021-08-13 08:17:04,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:04,762 INFO L142 QuantifierPusher]: treesize reduction 14, result has 60.0 percent of original size [2021-08-13 08:17:04,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 08:17:04,780 INFO L142 QuantifierPusher]: treesize reduction 17, result has 37.0 percent of original size [2021-08-13 08:17:04,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:17:04,792 INFO L142 QuantifierPusher]: treesize reduction 17, result has 37.0 percent of original size [2021-08-13 08:17:04,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:17:04,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:04,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:17:04,805 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size [2021-08-13 08:17:04,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:17:04,827 INFO L142 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size [2021-08-13 08:17:04,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 08:17:04,849 INFO L142 QuantifierPusher]: treesize reduction 28, result has 44.0 percent of original size [2021-08-13 08:17:04,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-08-13 08:17:04,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:04,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:17:04,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:17:04,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679551702] [2021-08-13 08:17:04,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679551702] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:17:04,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:17:04,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:17:04,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046788872] [2021-08-13 08:17:04,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:17:04,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:17:04,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:17:04,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:17:04,871 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:17:04,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 962 transitions, 11042 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:04,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:17:04,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:17:04,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:17:07,174 INFO L129 PetriNetUnfolder]: 4275/12819 cut-off events. [2021-08-13 08:17:07,174 INFO L130 PetriNetUnfolder]: For 42139/51817 co-relation queries the response was YES. [2021-08-13 08:17:07,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64422 conditions, 12819 events. 4275/12819 cut-off events. For 42139/51817 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 144605 event pairs, 538 based on Foata normal form. 383/12771 useless extension candidates. Maximal degree in co-relation 63822. Up to 5885 conditions per place. [2021-08-13 08:17:07,270 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 935 selfloop transitions, 122 changer transitions 59/1220 dead transitions. [2021-08-13 08:17:07,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 1220 transitions, 16366 flow [2021-08-13 08:17:07,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 08:17:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 08:17:07,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 341 transitions. [2021-08-13 08:17:07,272 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8042452830188679 [2021-08-13 08:17:07,273 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 341 transitions. [2021-08-13 08:17:07,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 341 transitions. [2021-08-13 08:17:07,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:17:07,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 341 transitions. [2021-08-13 08:17:07,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.625) internal successors, (341), 8 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:07,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:07,275 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:07,275 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 90 predicate places. [2021-08-13 08:17:07,275 INFO L482 AbstractCegarLoop]: Abstraction has has 148 places, 1220 transitions, 16366 flow [2021-08-13 08:17:07,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:07,276 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:17:07,276 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:17:07,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 08:17:07,276 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:17:07,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:17:07,276 INFO L82 PathProgramCache]: Analyzing trace with hash 738333274, now seen corresponding path program 13 times [2021-08-13 08:17:07,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:17:07,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98516826] [2021-08-13 08:17:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:17:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:17:07,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:07,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:07,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:07,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:07,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:07,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:07,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:07,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:07,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:07,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:07,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:07,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:07,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 08:17:07,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:07,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:07,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:17:07,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:17:07,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98516826] [2021-08-13 08:17:07,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98516826] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:17:07,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:17:07,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:17:07,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900145434] [2021-08-13 08:17:07,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:17:07,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:17:07,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:17:07,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:17:07,375 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-08-13 08:17:07,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 1220 transitions, 16366 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:07,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:17:07,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-08-13 08:17:07,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:17:11,326 INFO L129 PetriNetUnfolder]: 4339/13512 cut-off events. [2021-08-13 08:17:11,326 INFO L130 PetriNetUnfolder]: For 46656/57140 co-relation queries the response was YES. [2021-08-13 08:17:11,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69505 conditions, 13512 events. 4339/13512 cut-off events. For 46656/57140 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 155629 event pairs, 507 based on Foata normal form. 456/13538 useless extension candidates. Maximal degree in co-relation 68561. Up to 6113 conditions per place. [2021-08-13 08:17:11,413 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 79 selfloop transitions, 45 changer transitions 59/1261 dead transitions. [2021-08-13 08:17:11,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 1261 transitions, 16946 flow [2021-08-13 08:17:11,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 08:17:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 08:17:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 523 transitions. [2021-08-13 08:17:11,414 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8970840480274442 [2021-08-13 08:17:11,414 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 523 transitions. [2021-08-13 08:17:11,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 523 transitions. [2021-08-13 08:17:11,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:17:11,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 523 transitions. [2021-08-13 08:17:11,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.54545454545455) internal successors, (523), 11 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:11,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:11,417 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:11,417 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 100 predicate places. [2021-08-13 08:17:11,417 INFO L482 AbstractCegarLoop]: Abstraction has has 158 places, 1261 transitions, 16946 flow [2021-08-13 08:17:11,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:11,418 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:17:11,418 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:17:11,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 08:17:11,418 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:17:11,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:17:11,419 INFO L82 PathProgramCache]: Analyzing trace with hash -551834758, now seen corresponding path program 14 times [2021-08-13 08:17:11,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:17:11,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328651300] [2021-08-13 08:17:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:17:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:17:11,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:11,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:17:11,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:11,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:17:11,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:11,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:11,463 INFO L142 QuantifierPusher]: treesize reduction 35, result has 30.0 percent of original size [2021-08-13 08:17:11,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 08:17:11,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:11,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:17:11,477 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-08-13 08:17:11,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:17:11,487 INFO L142 QuantifierPusher]: treesize reduction 10, result has 61.5 percent of original size [2021-08-13 08:17:11,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:17:11,499 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-08-13 08:17:11,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:17:11,514 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-08-13 08:17:11,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:17:11,531 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-08-13 08:17:11,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:11,536 INFO L142 QuantifierPusher]: treesize reduction 26, result has 36.6 percent of original size [2021-08-13 08:17:11,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 08:17:11,537 INFO L142 QuantifierPusher]: treesize reduction 13, result has 7.1 percent of original size [2021-08-13 08:17:11,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:11,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:11,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:11,538 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 08:17:11,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:17:11,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328651300] [2021-08-13 08:17:11,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328651300] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:17:11,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:17:11,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:17:11,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904779319] [2021-08-13 08:17:11,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:17:11,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:17:11,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:17:11,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:17:11,539 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:17:11,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 1261 transitions, 16946 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:11,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:17:11,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:17:11,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:17:15,034 INFO L129 PetriNetUnfolder]: 4749/16635 cut-off events. [2021-08-13 08:17:15,035 INFO L130 PetriNetUnfolder]: For 79390/96066 co-relation queries the response was YES. [2021-08-13 08:17:15,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91075 conditions, 16635 events. 4749/16635 cut-off events. For 79390/96066 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 208728 event pairs, 589 based on Foata normal form. 958/17043 useless extension candidates. Maximal degree in co-relation 89445. Up to 7647 conditions per place. [2021-08-13 08:17:15,161 INFO L132 encePairwiseOnDemand]: 39/53 looper letters, 959 selfloop transitions, 203 changer transitions 154/1461 dead transitions. [2021-08-13 08:17:15,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 1461 transitions, 22374 flow [2021-08-13 08:17:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 08:17:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 08:17:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 395 transitions. [2021-08-13 08:17:15,162 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8280922431865828 [2021-08-13 08:17:15,162 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 395 transitions. [2021-08-13 08:17:15,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 395 transitions. [2021-08-13 08:17:15,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:17:15,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 395 transitions. [2021-08-13 08:17:15,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 43.888888888888886) internal successors, (395), 9 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:15,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:15,165 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:15,165 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 108 predicate places. [2021-08-13 08:17:15,165 INFO L482 AbstractCegarLoop]: Abstraction has has 166 places, 1461 transitions, 22374 flow [2021-08-13 08:17:15,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:15,165 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:17:15,165 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:17:15,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 08:17:15,166 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:17:15,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:17:15,166 INFO L82 PathProgramCache]: Analyzing trace with hash 220293830, now seen corresponding path program 15 times [2021-08-13 08:17:15,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:17:15,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591293353] [2021-08-13 08:17:15,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:17:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:17:15,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:15,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 08:17:15,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:15,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:17:15,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:15,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:15,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:15,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:17:15,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:15,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:15,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:15,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:15,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:15,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:15,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:15,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:15,267 INFO L142 QuantifierPusher]: treesize reduction 11, result has 47.6 percent of original size [2021-08-13 08:17:15,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:17:15,278 INFO L142 QuantifierPusher]: treesize reduction 15, result has 37.5 percent of original size [2021-08-13 08:17:15,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:17:15,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:15,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:17:15,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:15,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:15,290 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 08:17:15,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:17:15,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591293353] [2021-08-13 08:17:15,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591293353] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:17:15,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:17:15,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 08:17:15,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864613027] [2021-08-13 08:17:15,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 08:17:15,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:17:15,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 08:17:15,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-13 08:17:15,294 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:17:15,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 1461 transitions, 22374 flow. Second operand has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:15,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:17:15,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:17:15,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:17:19,286 INFO L129 PetriNetUnfolder]: 4877/17431 cut-off events. [2021-08-13 08:17:19,287 INFO L130 PetriNetUnfolder]: For 107016/125088 co-relation queries the response was YES. [2021-08-13 08:17:19,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104624 conditions, 17431 events. 4877/17431 cut-off events. For 107016/125088 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 222195 event pairs, 458 based on Foata normal form. 1173/18253 useless extension candidates. Maximal degree in co-relation 102992. Up to 7991 conditions per place. [2021-08-13 08:17:19,420 INFO L132 encePairwiseOnDemand]: 36/53 looper letters, 1010 selfloop transitions, 507 changer transitions 306/1970 dead transitions. [2021-08-13 08:17:19,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 1970 transitions, 34164 flow [2021-08-13 08:17:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 08:17:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 08:17:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 678 transitions. [2021-08-13 08:17:19,422 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7995283018867925 [2021-08-13 08:17:19,422 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 678 transitions. [2021-08-13 08:17:19,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 678 transitions. [2021-08-13 08:17:19,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:17:19,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 678 transitions. [2021-08-13 08:17:19,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 42.375) internal successors, (678), 16 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:19,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 53.0) internal successors, (901), 17 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:19,425 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 53.0) internal successors, (901), 17 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:19,425 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 123 predicate places. [2021-08-13 08:17:19,425 INFO L482 AbstractCegarLoop]: Abstraction has has 181 places, 1970 transitions, 34164 flow [2021-08-13 08:17:19,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:19,425 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:17:19,425 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:17:19,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 08:17:19,426 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:17:19,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:17:19,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1838210606, now seen corresponding path program 16 times [2021-08-13 08:17:19,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:17:19,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000957884] [2021-08-13 08:17:19,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:17:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:17:19,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:19,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 08:17:19,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:19,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:17:19,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:19,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:19,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:19,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:17:19,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:19,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:19,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:19,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:19,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:19,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:19,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:19,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:19,529 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-08-13 08:17:19,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:17:19,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:19,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:17:19,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:17:19,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000957884] [2021-08-13 08:17:19,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000957884] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:17:19,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:17:19,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 08:17:19,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396770841] [2021-08-13 08:17:19,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 08:17:19,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:17:19,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 08:17:19,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-13 08:17:19,543 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:17:19,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 1970 transitions, 34164 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:19,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:17:19,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:17:19,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:17:24,565 INFO L129 PetriNetUnfolder]: 4291/14247 cut-off events. [2021-08-13 08:17:24,565 INFO L130 PetriNetUnfolder]: For 106252/118332 co-relation queries the response was YES. [2021-08-13 08:17:24,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96209 conditions, 14247 events. 4291/14247 cut-off events. For 106252/118332 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 173676 event pairs, 436 based on Foata normal form. 892/14797 useless extension candidates. Maximal degree in co-relation 95723. Up to 6785 conditions per place. [2021-08-13 08:17:24,715 INFO L132 encePairwiseOnDemand]: 36/53 looper letters, 1047 selfloop transitions, 397 changer transitions 404/1944 dead transitions. [2021-08-13 08:17:24,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 1944 transitions, 37720 flow [2021-08-13 08:17:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 08:17:24,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 08:17:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 516 transitions. [2021-08-13 08:17:24,718 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-08-13 08:17:24,718 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 516 transitions. [2021-08-13 08:17:24,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 516 transitions. [2021-08-13 08:17:24,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:17:24,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 516 transitions. [2021-08-13 08:17:24,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.0) internal successors, (516), 12 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:24,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:24,721 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:24,721 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 134 predicate places. [2021-08-13 08:17:24,721 INFO L482 AbstractCegarLoop]: Abstraction has has 192 places, 1944 transitions, 37720 flow [2021-08-13 08:17:24,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:24,721 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:17:24,721 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:17:24,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 08:17:24,722 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:17:24,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:17:24,722 INFO L82 PathProgramCache]: Analyzing trace with hash 855614904, now seen corresponding path program 17 times [2021-08-13 08:17:24,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:17:24,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596945521] [2021-08-13 08:17:24,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:17:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:17:24,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:24,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 08:17:24,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:24,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 08:17:24,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:24,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:17:24,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:24,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:24,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:24,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:17:24,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:24,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:24,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:24,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:24,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:24,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:24,863 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-08-13 08:17:24,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:17:24,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:24,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:24,874 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 08:17:24,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:17:24,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596945521] [2021-08-13 08:17:24,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596945521] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:17:24,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:17:24,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:17:24,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912536565] [2021-08-13 08:17:24,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:17:24,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:17:24,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:17:24,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:17:24,877 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:17:24,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 1944 transitions, 37720 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:24,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:17:24,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:17:24,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:17:30,339 INFO L129 PetriNetUnfolder]: 3946/13476 cut-off events. [2021-08-13 08:17:30,339 INFO L130 PetriNetUnfolder]: For 124113/137722 co-relation queries the response was YES. [2021-08-13 08:17:30,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97942 conditions, 13476 events. 3946/13476 cut-off events. For 124113/137722 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 164606 event pairs, 354 based on Foata normal form. 750/13912 useless extension candidates. Maximal degree in co-relation 97454. Up to 6420 conditions per place. [2021-08-13 08:17:30,501 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 1169 selfloop transitions, 321 changer transitions 422/2008 dead transitions. [2021-08-13 08:17:30,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 2008 transitions, 42808 flow [2021-08-13 08:17:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 08:17:30,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 08:17:30,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 371 transitions. [2021-08-13 08:17:30,503 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-08-13 08:17:30,503 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 371 transitions. [2021-08-13 08:17:30,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 371 transitions. [2021-08-13 08:17:30,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:17:30,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 371 transitions. [2021-08-13 08:17:30,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.22222222222222) internal successors, (371), 9 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:30,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:30,505 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:30,505 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 142 predicate places. [2021-08-13 08:17:30,508 INFO L482 AbstractCegarLoop]: Abstraction has has 200 places, 2008 transitions, 42808 flow [2021-08-13 08:17:30,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:30,508 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:17:30,508 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:17:30,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 08:17:30,508 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:17:30,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:17:30,510 INFO L82 PathProgramCache]: Analyzing trace with hash -46560520, now seen corresponding path program 18 times [2021-08-13 08:17:30,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:17:30,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881127188] [2021-08-13 08:17:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:17:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:17:30,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:30,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 08:17:30,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:30,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 08:17:30,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:30,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:17:30,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:30,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:30,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:30,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:17:30,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:30,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:30,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:30,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:30,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:30,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:30,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:30,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:17:30,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:30,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:30,661 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 08:17:30,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:17:30,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881127188] [2021-08-13 08:17:30,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881127188] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:17:30,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:17:30,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:17:30,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101173652] [2021-08-13 08:17:30,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:17:30,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:17:30,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:17:30,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:17:30,663 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:17:30,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 2008 transitions, 42808 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:30,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:17:30,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:17:30,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:17:36,437 INFO L129 PetriNetUnfolder]: 3534/12257 cut-off events. [2021-08-13 08:17:36,437 INFO L130 PetriNetUnfolder]: For 134712/147435 co-relation queries the response was YES. [2021-08-13 08:17:36,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96322 conditions, 12257 events. 3534/12257 cut-off events. For 134712/147435 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 147876 event pairs, 326 based on Foata normal form. 568/12547 useless extension candidates. Maximal degree in co-relation 95928. Up to 5922 conditions per place. [2021-08-13 08:17:36,541 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 1113 selfloop transitions, 295 changer transitions 552/2056 dead transitions. [2021-08-13 08:17:36,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 2056 transitions, 47768 flow [2021-08-13 08:17:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 08:17:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 08:17:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 373 transitions. [2021-08-13 08:17:36,543 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7819706498951782 [2021-08-13 08:17:36,543 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 373 transitions. [2021-08-13 08:17:36,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 373 transitions. [2021-08-13 08:17:36,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:17:36,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 373 transitions. [2021-08-13 08:17:36,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.44444444444444) internal successors, (373), 9 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:36,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:36,545 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:36,545 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 150 predicate places. [2021-08-13 08:17:36,545 INFO L482 AbstractCegarLoop]: Abstraction has has 208 places, 2056 transitions, 47768 flow [2021-08-13 08:17:36,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:36,545 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:17:36,545 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:17:36,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 08:17:36,546 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:17:36,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:17:36,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1143813494, now seen corresponding path program 19 times [2021-08-13 08:17:36,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:17:36,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409921178] [2021-08-13 08:17:36,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:17:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:17:36,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:36,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:36,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:36,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:36,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:36,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:17:36,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:36,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:36,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:36,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:36,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:36,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:36,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:36,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 08:17:36,631 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-08-13 08:17:36,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 08:17:36,646 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-08-13 08:17:36,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:17:36,671 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-08-13 08:17:36,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:36,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:36,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:17:36,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:17:36,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409921178] [2021-08-13 08:17:36,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409921178] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:17:36,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:17:36,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 08:17:36,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930274332] [2021-08-13 08:17:36,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 08:17:36,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:17:36,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 08:17:36,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-13 08:17:36,674 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:17:36,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 2056 transitions, 47768 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:36,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:17:36,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:17:36,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:17:43,057 INFO L129 PetriNetUnfolder]: 3706/13103 cut-off events. [2021-08-13 08:17:43,058 INFO L130 PetriNetUnfolder]: For 176975/193515 co-relation queries the response was YES. [2021-08-13 08:17:43,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109378 conditions, 13103 events. 3706/13103 cut-off events. For 176975/193515 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 161413 event pairs, 338 based on Foata normal form. 489/13292 useless extension candidates. Maximal degree in co-relation 108982. Up to 6299 conditions per place. [2021-08-13 08:17:43,218 INFO L132 encePairwiseOnDemand]: 41/53 looper letters, 1273 selfloop transitions, 195 changer transitions 649/2213 dead transitions. [2021-08-13 08:17:43,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 2213 transitions, 55754 flow [2021-08-13 08:17:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 08:17:43,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 08:17:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 502 transitions. [2021-08-13 08:17:43,230 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.789308176100629 [2021-08-13 08:17:43,230 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 502 transitions. [2021-08-13 08:17:43,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 502 transitions. [2021-08-13 08:17:43,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:17:43,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 502 transitions. [2021-08-13 08:17:43,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 41.833333333333336) internal successors, (502), 12 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:43,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:43,233 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:43,234 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 161 predicate places. [2021-08-13 08:17:43,234 INFO L482 AbstractCegarLoop]: Abstraction has has 219 places, 2213 transitions, 55754 flow [2021-08-13 08:17:43,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:43,234 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:17:43,234 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:17:43,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 08:17:43,235 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:17:43,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:17:43,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1176557188, now seen corresponding path program 20 times [2021-08-13 08:17:43,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:17:43,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619125116] [2021-08-13 08:17:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:17:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:17:43,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:43,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:17:43,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:43,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:17:43,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:43,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:43,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:43,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:17:43,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:43,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 08:17:43,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:43,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 08:17:43,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:43,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 08:17:43,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:43,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 08:17:43,429 INFO L142 QuantifierPusher]: treesize reduction 10, result has 63.0 percent of original size [2021-08-13 08:17:43,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 08:17:43,448 INFO L142 QuantifierPusher]: treesize reduction 23, result has 53.1 percent of original size [2021-08-13 08:17:43,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-08-13 08:17:43,477 INFO L142 QuantifierPusher]: treesize reduction 26, result has 29.7 percent of original size [2021-08-13 08:17:43,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 08:17:43,491 INFO L142 QuantifierPusher]: treesize reduction 16, result has 40.7 percent of original size [2021-08-13 08:17:43,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 08:17:43,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:43,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:43,493 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 08:17:43,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:17:43,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619125116] [2021-08-13 08:17:43,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619125116] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:17:43,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:17:43,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 08:17:43,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94013957] [2021-08-13 08:17:43,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 08:17:43,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:17:43,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 08:17:43,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-13 08:17:43,495 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:17:43,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 2213 transitions, 55754 flow. Second operand has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:43,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:17:43,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:17:43,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:17:54,462 INFO L129 PetriNetUnfolder]: 4782/17220 cut-off events. [2021-08-13 08:17:54,462 INFO L130 PetriNetUnfolder]: For 285093/310499 co-relation queries the response was YES. [2021-08-13 08:17:54,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152171 conditions, 17220 events. 4782/17220 cut-off events. For 285093/310499 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 224562 event pairs, 437 based on Foata normal form. 1036/17893 useless extension candidates. Maximal degree in co-relation 151669. Up to 8394 conditions per place. [2021-08-13 08:17:54,660 INFO L132 encePairwiseOnDemand]: 34/53 looper letters, 1370 selfloop transitions, 741 changer transitions 845/3052 dead transitions. [2021-08-13 08:17:54,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 3052 transitions, 83464 flow [2021-08-13 08:17:54,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-13 08:17:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-08-13 08:17:54,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1156 transitions. [2021-08-13 08:17:54,690 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8078266946191475 [2021-08-13 08:17:54,690 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1156 transitions. [2021-08-13 08:17:54,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1156 transitions. [2021-08-13 08:17:54,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:17:54,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1156 transitions. [2021-08-13 08:17:54,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 42.81481481481482) internal successors, (1156), 27 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:54,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 53.0) internal successors, (1484), 28 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:54,695 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 53.0) internal successors, (1484), 28 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:54,695 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 187 predicate places. [2021-08-13 08:17:54,695 INFO L482 AbstractCegarLoop]: Abstraction has has 245 places, 3052 transitions, 83464 flow [2021-08-13 08:17:54,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:54,696 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:17:54,696 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:17:54,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 08:17:54,696 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:17:54,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:17:54,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1919080128, now seen corresponding path program 21 times [2021-08-13 08:17:54,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:17:54,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886656320] [2021-08-13 08:17:54,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:17:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:17:54,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:54,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:54,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:54,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:54,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:54,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:54,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:54,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:54,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:54,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:54,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:54,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:54,796 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 08:17:54,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:17:54,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:17:54,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:17:54,805 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 08:17:54,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:17:54,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886656320] [2021-08-13 08:17:54,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886656320] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:17:54,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:17:54,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:17:54,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707457503] [2021-08-13 08:17:54,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:17:54,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:17:54,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:17:54,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:17:54,809 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-08-13 08:17:54,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 3052 transitions, 83464 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:17:54,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:17:54,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-08-13 08:17:54,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:18:11,153 INFO L129 PetriNetUnfolder]: 4787/17190 cut-off events. [2021-08-13 08:18:11,153 INFO L130 PetriNetUnfolder]: For 283656/305917 co-relation queries the response was YES. [2021-08-13 08:18:11,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155122 conditions, 17190 events. 4787/17190 cut-off events. For 283656/305917 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 224089 event pairs, 435 based on Foata normal form. 445/17264 useless extension candidates. Maximal degree in co-relation 154630. Up to 8401 conditions per place. [2021-08-13 08:18:11,351 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 50 selfloop transitions, 25 changer transitions 935/3054 dead transitions. [2021-08-13 08:18:11,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 3054 transitions, 83654 flow [2021-08-13 08:18:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 08:18:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 08:18:11,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 517 transitions. [2021-08-13 08:18:11,352 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8867924528301887 [2021-08-13 08:18:11,353 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 517 transitions. [2021-08-13 08:18:11,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 517 transitions. [2021-08-13 08:18:11,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:18:11,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 517 transitions. [2021-08-13 08:18:11,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.0) internal successors, (517), 11 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:11,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:11,370 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:11,370 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 197 predicate places. [2021-08-13 08:18:11,371 INFO L482 AbstractCegarLoop]: Abstraction has has 255 places, 3054 transitions, 83654 flow [2021-08-13 08:18:11,371 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:11,371 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:18:11,371 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:18:11,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 08:18:11,371 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:18:11,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:18:11,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1800428364, now seen corresponding path program 22 times [2021-08-13 08:18:11,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:18:11,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789445799] [2021-08-13 08:18:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:18:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:18:11,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:11,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:18:11,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:11,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:18:11,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:11,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:18:11,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:11,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:18:11,495 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-08-13 08:18:11,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 08:18:11,502 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-08-13 08:18:11,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 08:18:11,512 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-08-13 08:18:11,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:18:11,523 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-08-13 08:18:11,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:18:11,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:11,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:18:11,531 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 08:18:11,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:18:11,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789445799] [2021-08-13 08:18:11,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789445799] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:18:11,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:18:11,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:18:11,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194505563] [2021-08-13 08:18:11,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:18:11,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:18:11,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:18:11,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:18:11,533 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:18:11,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 3054 transitions, 83654 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:11,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:18:11,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:18:11,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:18:29,081 INFO L129 PetriNetUnfolder]: 5145/18463 cut-off events. [2021-08-13 08:18:29,081 INFO L130 PetriNetUnfolder]: For 367020/395677 co-relation queries the response was YES. [2021-08-13 08:18:29,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176451 conditions, 18463 events. 5145/18463 cut-off events. For 367020/395677 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 243275 event pairs, 460 based on Foata normal form. 1013/19099 useless extension candidates. Maximal degree in co-relation 175957. Up to 9054 conditions per place. [2021-08-13 08:18:29,256 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 1553 selfloop transitions, 758 changer transitions 999/3406 dead transitions. [2021-08-13 08:18:29,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 3406 transitions, 100110 flow [2021-08-13 08:18:29,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-13 08:18:29,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-08-13 08:18:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 639 transitions. [2021-08-13 08:18:29,258 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8037735849056604 [2021-08-13 08:18:29,258 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 639 transitions. [2021-08-13 08:18:29,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 639 transitions. [2021-08-13 08:18:29,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:18:29,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 639 transitions. [2021-08-13 08:18:29,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 42.6) internal successors, (639), 15 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:29,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 53.0) internal successors, (848), 16 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:29,260 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 53.0) internal successors, (848), 16 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:29,260 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 211 predicate places. [2021-08-13 08:18:29,260 INFO L482 AbstractCegarLoop]: Abstraction has has 269 places, 3406 transitions, 100110 flow [2021-08-13 08:18:29,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:29,260 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:18:29,260 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:18:29,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 08:18:29,260 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:18:29,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:18:29,260 INFO L82 PathProgramCache]: Analyzing trace with hash 502858046, now seen corresponding path program 23 times [2021-08-13 08:18:29,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:18:29,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631502882] [2021-08-13 08:18:29,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:18:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:18:29,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:29,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:18:29,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:29,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:18:29,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:29,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:18:29,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:29,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:18:29,329 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-08-13 08:18:29,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 08:18:29,343 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-08-13 08:18:29,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 08:18:29,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:29,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 08:18:29,366 INFO L142 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size [2021-08-13 08:18:29,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:18:29,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:29,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:18:29,373 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 08:18:29,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:18:29,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631502882] [2021-08-13 08:18:29,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631502882] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:18:29,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:18:29,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:18:29,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523586187] [2021-08-13 08:18:29,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:18:29,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:18:29,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:18:29,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:18:29,375 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:18:29,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 3406 transitions, 100110 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:29,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:18:29,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:18:29,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:18:42,797 INFO L129 PetriNetUnfolder]: 4972/18117 cut-off events. [2021-08-13 08:18:42,797 INFO L130 PetriNetUnfolder]: For 403439/430671 co-relation queries the response was YES. [2021-08-13 08:18:42,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182884 conditions, 18117 events. 4972/18117 cut-off events. For 403439/430671 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 240191 event pairs, 465 based on Foata normal form. 593/18335 useless extension candidates. Maximal degree in co-relation 182477. Up to 8944 conditions per place. [2021-08-13 08:18:42,973 INFO L132 encePairwiseOnDemand]: 36/53 looper letters, 1971 selfloop transitions, 240 changer transitions 1207/3514 dead transitions. [2021-08-13 08:18:42,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 3514 transitions, 110166 flow [2021-08-13 08:18:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-13 08:18:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-08-13 08:18:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 747 transitions. [2021-08-13 08:18:42,974 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7830188679245284 [2021-08-13 08:18:42,974 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 747 transitions. [2021-08-13 08:18:42,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 747 transitions. [2021-08-13 08:18:42,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:18:42,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 747 transitions. [2021-08-13 08:18:42,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 41.5) internal successors, (747), 18 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:42,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 53.0) internal successors, (1007), 19 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:42,976 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 53.0) internal successors, (1007), 19 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:42,976 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 228 predicate places. [2021-08-13 08:18:42,977 INFO L482 AbstractCegarLoop]: Abstraction has has 286 places, 3514 transitions, 110166 flow [2021-08-13 08:18:42,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:42,977 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:18:42,977 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:18:42,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 08:18:42,977 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:18:42,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:18:42,977 INFO L82 PathProgramCache]: Analyzing trace with hash 444636654, now seen corresponding path program 24 times [2021-08-13 08:18:42,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:18:42,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014587444] [2021-08-13 08:18:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:18:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:18:42,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:42,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:18:43,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:43,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:18:43,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:43,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:18:43,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:43,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:18:43,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:43,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:18:43,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:43,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:18:43,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:43,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:18:43,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:43,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:18:43,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:43,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:18:43,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:43,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:18:43,087 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 08:18:43,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:18:43,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014587444] [2021-08-13 08:18:43,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014587444] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:18:43,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:18:43,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 08:18:43,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804037138] [2021-08-13 08:18:43,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 08:18:43,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:18:43,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 08:18:43,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-13 08:18:43,088 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:18:43,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 3514 transitions, 110166 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:43,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:18:43,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:18:43,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:18:55,118 INFO L129 PetriNetUnfolder]: 4099/15169 cut-off events. [2021-08-13 08:18:55,118 INFO L130 PetriNetUnfolder]: For 376833/398149 co-relation queries the response was YES. [2021-08-13 08:18:55,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162421 conditions, 15169 events. 4099/15169 cut-off events. For 376833/398149 co-relation queries the response was YES. Maximal size of possible extension queue 995. Compared 197815 event pairs, 479 based on Foata normal form. 1024/15820 useless extension candidates. Maximal degree in co-relation 162085. Up to 7523 conditions per place. [2021-08-13 08:18:55,244 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 1305 selfloop transitions, 726 changer transitions 1411/3535 dead transitions. [2021-08-13 08:18:55,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 3535 transitions, 117762 flow [2021-08-13 08:18:55,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 08:18:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 08:18:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 520 transitions. [2021-08-13 08:18:55,246 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8176100628930818 [2021-08-13 08:18:55,246 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 520 transitions. [2021-08-13 08:18:55,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 520 transitions. [2021-08-13 08:18:55,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:18:55,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 520 transitions. [2021-08-13 08:18:55,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.333333333333336) internal successors, (520), 12 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:55,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:55,248 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:55,248 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 239 predicate places. [2021-08-13 08:18:55,248 INFO L482 AbstractCegarLoop]: Abstraction has has 297 places, 3535 transitions, 117762 flow [2021-08-13 08:18:55,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:55,248 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:18:55,248 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:18:55,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 08:18:55,248 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:18:55,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:18:55,249 INFO L82 PathProgramCache]: Analyzing trace with hash -636831450, now seen corresponding path program 25 times [2021-08-13 08:18:55,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:18:55,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783943939] [2021-08-13 08:18:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:18:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:18:55,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:55,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:18:55,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:55,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:18:55,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:55,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:18:55,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:55,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:18:55,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:55,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:18:55,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:55,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:18:55,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:55,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:18:55,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:55,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:18:55,342 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-08-13 08:18:55,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:18:55,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:18:55,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:18:55,353 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 08:18:55,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:18:55,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783943939] [2021-08-13 08:18:55,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783943939] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:18:55,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:18:55,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 08:18:55,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92273465] [2021-08-13 08:18:55,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 08:18:55,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:18:55,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 08:18:55,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-13 08:18:55,354 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:18:55,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 3535 transitions, 117762 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:18:55,355 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:18:55,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:18:55,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:19:10,741 INFO L129 PetriNetUnfolder]: 3735/13763 cut-off events. [2021-08-13 08:19:10,742 INFO L130 PetriNetUnfolder]: For 358861/376268 co-relation queries the response was YES. [2021-08-13 08:19:10,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156277 conditions, 13763 events. 3735/13763 cut-off events. For 358861/376268 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 177910 event pairs, 486 based on Foata normal form. 609/14012 useless extension candidates. Maximal degree in co-relation 156019. Up to 6915 conditions per place. [2021-08-13 08:19:10,892 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 1345 selfloop transitions, 575 changer transitions 1454/3455 dead transitions. [2021-08-13 08:19:10,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 3455 transitions, 122034 flow [2021-08-13 08:19:10,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 08:19:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 08:19:10,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 473 transitions. [2021-08-13 08:19:10,909 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-08-13 08:19:10,909 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 473 transitions. [2021-08-13 08:19:10,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 473 transitions. [2021-08-13 08:19:10,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:19:10,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 473 transitions. [2021-08-13 08:19:10,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:10,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:10,911 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:10,911 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 249 predicate places. [2021-08-13 08:19:10,912 INFO L482 AbstractCegarLoop]: Abstraction has has 307 places, 3455 transitions, 122034 flow [2021-08-13 08:19:10,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:10,912 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:19:10,912 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:19:10,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 08:19:10,912 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:19:10,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:19:10,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1958187526, now seen corresponding path program 26 times [2021-08-13 08:19:10,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:19:10,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655716268] [2021-08-13 08:19:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:19:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:19:10,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:10,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:19:10,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:10,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:19:10,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:10,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:19:10,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:10,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:19:10,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:10,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:19:10,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:10,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:19:10,978 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 08:19:10,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:19:10,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:10,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:19:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:19:10,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:19:10,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655716268] [2021-08-13 08:19:10,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655716268] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:19:10,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:19:10,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:19:10,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510673704] [2021-08-13 08:19:10,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:19:10,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:19:10,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:19:10,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:19:10,991 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-08-13 08:19:10,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 3455 transitions, 122034 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:10,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:19:10,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-08-13 08:19:10,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:19:26,131 INFO L129 PetriNetUnfolder]: 3740/13769 cut-off events. [2021-08-13 08:19:26,132 INFO L130 PetriNetUnfolder]: For 362972/379781 co-relation queries the response was YES. [2021-08-13 08:19:26,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158238 conditions, 13769 events. 3740/13769 cut-off events. For 362972/379781 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 178068 event pairs, 481 based on Foata normal form. 174/13588 useless extension candidates. Maximal degree in co-relation 157976. Up to 6916 conditions per place. [2021-08-13 08:19:26,229 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 44 selfloop transitions, 15 changer transitions 2093/3456 dead transitions. [2021-08-13 08:19:26,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 3456 transitions, 122188 flow [2021-08-13 08:19:26,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 08:19:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 08:19:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 513 transitions. [2021-08-13 08:19:26,230 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8799313893653516 [2021-08-13 08:19:26,230 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 513 transitions. [2021-08-13 08:19:26,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 513 transitions. [2021-08-13 08:19:26,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:19:26,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 513 transitions. [2021-08-13 08:19:26,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 46.63636363636363) internal successors, (513), 11 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:26,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:26,232 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:26,232 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 259 predicate places. [2021-08-13 08:19:26,232 INFO L482 AbstractCegarLoop]: Abstraction has has 317 places, 3456 transitions, 122188 flow [2021-08-13 08:19:26,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:26,232 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:19:26,232 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:19:26,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 08:19:26,233 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:19:26,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:19:26,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1400151508, now seen corresponding path program 27 times [2021-08-13 08:19:26,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:19:26,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417870062] [2021-08-13 08:19:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:19:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:19:26,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:26,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 08:19:26,270 INFO L142 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size [2021-08-13 08:19:26,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:19:26,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:26,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:19:26,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:26,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:19:26,282 INFO L142 QuantifierPusher]: treesize reduction 19, result has 13.6 percent of original size [2021-08-13 08:19:26,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:19:26,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:26,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:19:26,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:26,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 08:19:26,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:26,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:19:26,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:26,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 08:19:26,323 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-08-13 08:19:26,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:19:26,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:26,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:19:26,330 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 08:19:26,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:19:26,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417870062] [2021-08-13 08:19:26,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417870062] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:19:26,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:19:26,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:19:26,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991435986] [2021-08-13 08:19:26,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:19:26,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:19:26,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:19:26,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:19:26,332 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:19:26,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 3456 transitions, 122188 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:26,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:19:26,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:19:26,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:19:37,638 INFO L129 PetriNetUnfolder]: 3786/13846 cut-off events. [2021-08-13 08:19:37,638 INFO L130 PetriNetUnfolder]: For 409452/428308 co-relation queries the response was YES. [2021-08-13 08:19:37,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167667 conditions, 13846 events. 3786/13846 cut-off events. For 409452/428308 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 179063 event pairs, 482 based on Foata normal form. 505/13996 useless extension candidates. Maximal degree in co-relation 167447. Up to 7013 conditions per place. [2021-08-13 08:19:37,767 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 847 selfloop transitions, 298 changer transitions 2317/3532 dead transitions. [2021-08-13 08:19:37,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 3532 transitions, 131996 flow [2021-08-13 08:19:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 08:19:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 08:19:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 421 transitions. [2021-08-13 08:19:37,768 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7943396226415095 [2021-08-13 08:19:37,768 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 421 transitions. [2021-08-13 08:19:37,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 421 transitions. [2021-08-13 08:19:37,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:19:37,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 421 transitions. [2021-08-13 08:19:37,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.1) internal successors, (421), 10 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:37,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:37,769 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:37,770 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 266 predicate places. [2021-08-13 08:19:37,770 INFO L482 AbstractCegarLoop]: Abstraction has has 324 places, 3532 transitions, 131996 flow [2021-08-13 08:19:37,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:37,770 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:19:37,770 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:19:37,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-13 08:19:37,770 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:19:37,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:19:37,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1383828968, now seen corresponding path program 28 times [2021-08-13 08:19:37,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:19:37,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029226958] [2021-08-13 08:19:37,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:19:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:19:37,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:37,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:19:37,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:37,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:19:37,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:37,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:19:37,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:37,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:19:37,810 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-08-13 08:19:37,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 08:19:37,818 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-08-13 08:19:37,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:19:37,824 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-08-13 08:19:37,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:19:37,830 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-08-13 08:19:37,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 08:19:37,845 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-08-13 08:19:37,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:19:37,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:37,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:19:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:19:37,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:19:37,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029226958] [2021-08-13 08:19:37,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029226958] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:19:37,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:19:37,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 08:19:37,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323188937] [2021-08-13 08:19:37,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 08:19:37,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:19:37,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 08:19:37,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-13 08:19:37,855 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:19:37,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 3532 transitions, 131996 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:37,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:19:37,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:19:37,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:19:47,712 INFO L129 PetriNetUnfolder]: 3166/11881 cut-off events. [2021-08-13 08:19:47,712 INFO L130 PetriNetUnfolder]: For 391901/407488 co-relation queries the response was YES. [2021-08-13 08:19:47,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149352 conditions, 11881 events. 3166/11881 cut-off events. For 391901/407488 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 151884 event pairs, 466 based on Foata normal form. 410/11965 useless extension candidates. Maximal degree in co-relation 149192. Up to 5999 conditions per place. [2021-08-13 08:19:47,801 INFO L132 encePairwiseOnDemand]: 44/53 looper letters, 516 selfloop transitions, 31 changer transitions 2678/3274 dead transitions. [2021-08-13 08:19:47,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 3274 transitions, 128988 flow [2021-08-13 08:19:47,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 08:19:47,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 08:19:47,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 294 transitions. [2021-08-13 08:19:47,802 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7924528301886793 [2021-08-13 08:19:47,802 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 294 transitions. [2021-08-13 08:19:47,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 294 transitions. [2021-08-13 08:19:47,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:19:47,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 294 transitions. [2021-08-13 08:19:47,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.0) internal successors, (294), 7 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:47,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:47,803 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:47,803 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 272 predicate places. [2021-08-13 08:19:47,803 INFO L482 AbstractCegarLoop]: Abstraction has has 330 places, 3274 transitions, 128988 flow [2021-08-13 08:19:47,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:47,803 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:19:47,803 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:19:47,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-13 08:19:47,804 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:19:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:19:47,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1970468162, now seen corresponding path program 29 times [2021-08-13 08:19:47,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:19:47,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122106577] [2021-08-13 08:19:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:19:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:19:47,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:47,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:19:47,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:47,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:19:47,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:47,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:19:47,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:47,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:19:47,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:47,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:19:47,858 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-08-13 08:19:47,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:19:47,865 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-08-13 08:19:47,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 08:19:47,877 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-08-13 08:19:47,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:19:47,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:47,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:19:47,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:19:47,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:19:47,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122106577] [2021-08-13 08:19:47,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122106577] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:19:47,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:19:47,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:19:47,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610520556] [2021-08-13 08:19:47,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:19:47,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:19:47,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:19:47,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:19:47,887 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:19:47,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 3274 transitions, 128988 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:47,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:19:47,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:19:47,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:19:58,991 INFO L129 PetriNetUnfolder]: 3049/11841 cut-off events. [2021-08-13 08:19:58,991 INFO L130 PetriNetUnfolder]: For 412208/428396 co-relation queries the response was YES. [2021-08-13 08:19:59,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154659 conditions, 11841 events. 3049/11841 cut-off events. For 412208/428396 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 153762 event pairs, 453 based on Foata normal form. 300/11823 useless extension candidates. Maximal degree in co-relation 154517. Up to 5918 conditions per place. [2021-08-13 08:19:59,097 INFO L132 encePairwiseOnDemand]: 39/53 looper letters, 82 selfloop transitions, 32 changer transitions 3263/3412 dead transitions. [2021-08-13 08:19:59,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 3412 transitions, 141420 flow [2021-08-13 08:19:59,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 08:19:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 08:19:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 522 transitions. [2021-08-13 08:19:59,098 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8207547169811321 [2021-08-13 08:19:59,098 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 522 transitions. [2021-08-13 08:19:59,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 522 transitions. [2021-08-13 08:19:59,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:19:59,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 522 transitions. [2021-08-13 08:19:59,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.5) internal successors, (522), 12 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:59,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:59,114 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:59,130 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 281 predicate places. [2021-08-13 08:19:59,130 INFO L482 AbstractCegarLoop]: Abstraction has has 339 places, 3412 transitions, 141420 flow [2021-08-13 08:19:59,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:59,131 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:19:59,131 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:19:59,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-13 08:19:59,131 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:19:59,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:19:59,132 INFO L82 PathProgramCache]: Analyzing trace with hash -343337034, now seen corresponding path program 30 times [2021-08-13 08:19:59,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:19:59,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692599017] [2021-08-13 08:19:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:19:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:19:59,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:59,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:19:59,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:59,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:19:59,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:59,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:19:59,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:59,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 08:19:59,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:59,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:19:59,214 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-08-13 08:19:59,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:19:59,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:59,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 08:19:59,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:59,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:19:59,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:59,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:19:59,257 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-08-13 08:19:59,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:19:59,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:19:59,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:19:59,270 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 08:19:59,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:19:59,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692599017] [2021-08-13 08:19:59,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692599017] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:19:59,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:19:59,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:19:59,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450790206] [2021-08-13 08:19:59,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:19:59,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:19:59,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:19:59,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:19:59,274 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:19:59,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 3412 transitions, 141420 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:19:59,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:19:59,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:19:59,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:20:12,843 INFO L129 PetriNetUnfolder]: 3033/11806 cut-off events. [2021-08-13 08:20:12,843 INFO L130 PetriNetUnfolder]: For 450155/467268 co-relation queries the response was YES. [2021-08-13 08:20:12,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160321 conditions, 11806 events. 3033/11806 cut-off events. For 450155/467268 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 153464 event pairs, 451 based on Foata normal form. 132/11620 useless extension candidates. Maximal degree in co-relation 160177. Up to 6279 conditions per place. [2021-08-13 08:20:12,921 INFO L132 encePairwiseOnDemand]: 42/53 looper letters, 75 selfloop transitions, 17 changer transitions 3262/3389 dead transitions. [2021-08-13 08:20:12,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 3389 transitions, 147112 flow [2021-08-13 08:20:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 08:20:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 08:20:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 368 transitions. [2021-08-13 08:20:12,922 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7714884696016772 [2021-08-13 08:20:12,922 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 368 transitions. [2021-08-13 08:20:12,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 368 transitions. [2021-08-13 08:20:12,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:20:12,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 368 transitions. [2021-08-13 08:20:12,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.888888888888886) internal successors, (368), 9 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:12,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:12,924 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:12,924 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 289 predicate places. [2021-08-13 08:20:12,924 INFO L482 AbstractCegarLoop]: Abstraction has has 347 places, 3389 transitions, 147112 flow [2021-08-13 08:20:12,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:12,924 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:20:12,924 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:20:12,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-13 08:20:12,925 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:20:12,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:20:12,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1271375140, now seen corresponding path program 31 times [2021-08-13 08:20:12,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:20:12,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665592524] [2021-08-13 08:20:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:20:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:20:12,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:12,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:20:12,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:12,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:20:12,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:12,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:20:12,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:12,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:20:12,960 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-08-13 08:20:12,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:20:12,968 INFO L142 QuantifierPusher]: treesize reduction 21, result has 32.3 percent of original size [2021-08-13 08:20:12,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:20:12,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:12,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:20:12,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:12,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:20:12,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:12,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:20:12,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:12,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:20:13,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:13,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:20:13,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:13,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:20:13,015 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 08:20:13,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:20:13,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665592524] [2021-08-13 08:20:13,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665592524] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:20:13,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:20:13,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-13 08:20:13,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605625638] [2021-08-13 08:20:13,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-13 08:20:13,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:20:13,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-13 08:20:13,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-13 08:20:13,016 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:20:13,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 3389 transitions, 147112 flow. Second operand has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:13,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:20:13,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:20:13,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:20:28,794 INFO L129 PetriNetUnfolder]: 3084/12061 cut-off events. [2021-08-13 08:20:28,794 INFO L130 PetriNetUnfolder]: For 506935/526110 co-relation queries the response was YES. [2021-08-13 08:20:28,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170345 conditions, 12061 events. 3084/12061 cut-off events. For 506935/526110 co-relation queries the response was YES. Maximal size of possible extension queue 929. Compared 157722 event pairs, 461 based on Foata normal form. 147/11876 useless extension candidates. Maximal degree in co-relation 170199. Up to 6417 conditions per place. [2021-08-13 08:20:28,892 INFO L132 encePairwiseOnDemand]: 40/53 looper letters, 64 selfloop transitions, 9 changer transitions 3355/3463 dead transitions. [2021-08-13 08:20:28,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 3463 transitions, 157174 flow [2021-08-13 08:20:28,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 08:20:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 08:20:28,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 415 transitions. [2021-08-13 08:20:28,893 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7830188679245284 [2021-08-13 08:20:28,893 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 415 transitions. [2021-08-13 08:20:28,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 415 transitions. [2021-08-13 08:20:28,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:20:28,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 415 transitions. [2021-08-13 08:20:28,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 41.5) internal successors, (415), 10 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:28,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:28,894 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:28,894 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 298 predicate places. [2021-08-13 08:20:28,894 INFO L482 AbstractCegarLoop]: Abstraction has has 356 places, 3463 transitions, 157174 flow [2021-08-13 08:20:28,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:28,894 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:20:28,894 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:20:28,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-13 08:20:28,894 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:20:28,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:20:28,895 INFO L82 PathProgramCache]: Analyzing trace with hash 848045782, now seen corresponding path program 32 times [2021-08-13 08:20:28,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:20:28,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570019164] [2021-08-13 08:20:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:20:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:20:28,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:28,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:20:28,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:28,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:20:28,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:28,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:20:28,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:28,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:20:28,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:28,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:20:28,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:28,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:20:28,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:28,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:20:28,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:28,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:20:28,947 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-08-13 08:20:28,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:20:28,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:28,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:20:28,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:28,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:20:28,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:28,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:20:28,974 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 08:20:28,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:20:28,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570019164] [2021-08-13 08:20:28,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570019164] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:20:28,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:20:28,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 08:20:28,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849505641] [2021-08-13 08:20:28,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 08:20:28,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:20:28,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 08:20:28,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-13 08:20:28,976 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:20:28,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 3463 transitions, 157174 flow. Second operand has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:28,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:20:28,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:20:28,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:20:45,988 INFO L129 PetriNetUnfolder]: 3059/12068 cut-off events. [2021-08-13 08:20:45,989 INFO L130 PetriNetUnfolder]: For 555447/575956 co-relation queries the response was YES. [2021-08-13 08:20:46,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176953 conditions, 12068 events. 3059/12068 cut-off events. For 555447/575956 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 158227 event pairs, 470 based on Foata normal form. 133/11871 useless extension candidates. Maximal degree in co-relation 176805. Up to 6416 conditions per place. [2021-08-13 08:20:46,094 INFO L132 encePairwiseOnDemand]: 43/53 looper letters, 41 selfloop transitions, 12 changer transitions 3388/3475 dead transitions. [2021-08-13 08:20:46,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 3475 transitions, 164556 flow [2021-08-13 08:20:46,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 08:20:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 08:20:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 462 transitions. [2021-08-13 08:20:46,099 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7924528301886793 [2021-08-13 08:20:46,099 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 462 transitions. [2021-08-13 08:20:46,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 462 transitions. [2021-08-13 08:20:46,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:20:46,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 462 transitions. [2021-08-13 08:20:46,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 42.0) internal successors, (462), 11 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:46,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:46,102 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:46,102 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 308 predicate places. [2021-08-13 08:20:46,102 INFO L482 AbstractCegarLoop]: Abstraction has has 366 places, 3475 transitions, 164556 flow [2021-08-13 08:20:46,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 34.9) internal successors, (349), 10 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:46,102 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:20:46,103 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:20:46,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-13 08:20:46,103 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:20:46,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:20:46,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1274603126, now seen corresponding path program 33 times [2021-08-13 08:20:46,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:20:46,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505658548] [2021-08-13 08:20:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:20:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:20:46,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:46,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:20:46,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:46,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:20:46,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:46,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:20:46,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:46,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-08-13 08:20:46,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:46,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 08:20:46,229 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-08-13 08:20:46,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:20:46,250 INFO L142 QuantifierPusher]: treesize reduction 35, result has 16.7 percent of original size [2021-08-13 08:20:46,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:20:46,256 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-08-13 08:20:46,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:20:46,263 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-08-13 08:20:46,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:20:46,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:46,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 08:20:46,297 INFO L142 QuantifierPusher]: treesize reduction 12, result has 58.6 percent of original size [2021-08-13 08:20:46,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 08:20:46,310 INFO L142 QuantifierPusher]: treesize reduction 29, result has 29.3 percent of original size [2021-08-13 08:20:46,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:20:46,325 INFO L142 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-08-13 08:20:46,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:20:46,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:20:46,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:20:46,326 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 08:20:46,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:20:46,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505658548] [2021-08-13 08:20:46,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505658548] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:20:46,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:20:46,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-13 08:20:46,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301953946] [2021-08-13 08:20:46,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 08:20:46,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:20:46,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 08:20:46,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-08-13 08:20:46,328 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:20:46,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 3475 transitions, 164556 flow. Second operand has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:20:46,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:20:46,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:20:46,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:21:02,440 INFO L129 PetriNetUnfolder]: 3071/12131 cut-off events. [2021-08-13 08:21:02,440 INFO L130 PetriNetUnfolder]: For 612992/635383 co-relation queries the response was YES. [2021-08-13 08:21:02,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184346 conditions, 12131 events. 3071/12131 cut-off events. For 612992/635383 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 159174 event pairs, 473 based on Foata normal form. 109/11907 useless extension candidates. Maximal degree in co-relation 184196. Up to 6496 conditions per place. [2021-08-13 08:21:02,550 INFO L132 encePairwiseOnDemand]: 41/53 looper letters, 41 selfloop transitions, 5 changer transitions 3408/3488 dead transitions. [2021-08-13 08:21:02,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 3488 transitions, 172036 flow [2021-08-13 08:21:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 08:21:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 08:21:02,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 506 transitions. [2021-08-13 08:21:02,555 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7343976777939042 [2021-08-13 08:21:02,555 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 506 transitions. [2021-08-13 08:21:02,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 506 transitions. [2021-08-13 08:21:02,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:21:02,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 506 transitions. [2021-08-13 08:21:02,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 38.92307692307692) internal successors, (506), 13 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:02,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:02,557 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:02,558 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 320 predicate places. [2021-08-13 08:21:02,558 INFO L482 AbstractCegarLoop]: Abstraction has has 378 places, 3488 transitions, 172036 flow [2021-08-13 08:21:02,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:02,558 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:21:02,558 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:21:02,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-13 08:21:02,558 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:21:02,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:21:02,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1529873562, now seen corresponding path program 34 times [2021-08-13 08:21:02,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:21:02,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493433686] [2021-08-13 08:21:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:21:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:21:02,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:02,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 08:21:02,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:02,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:21:02,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:02,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:21:02,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:02,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-08-13 08:21:02,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:02,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 08:21:02,658 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-08-13 08:21:02,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:21:02,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:02,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:21:02,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:02,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:21:02,688 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-08-13 08:21:02,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-08-13 08:21:02,711 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:21:02,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:21:02,728 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-08-13 08:21:02,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:21:02,740 INFO L142 QuantifierPusher]: treesize reduction 21, result has 25.0 percent of original size [2021-08-13 08:21:02,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:21:02,751 INFO L142 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-08-13 08:21:02,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:21:02,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:02,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:21:02,752 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 08:21:02,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:21:02,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493433686] [2021-08-13 08:21:02,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493433686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:21:02,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:21:02,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-13 08:21:02,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194791446] [2021-08-13 08:21:02,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 08:21:02,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:21:02,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 08:21:02,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-08-13 08:21:02,770 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:21:02,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 3488 transitions, 172036 flow. Second operand has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:02,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:21:02,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:21:02,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:21:22,639 INFO L129 PetriNetUnfolder]: 3267/13049 cut-off events. [2021-08-13 08:21:22,639 INFO L130 PetriNetUnfolder]: For 727445/753734 co-relation queries the response was YES. [2021-08-13 08:21:22,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203605 conditions, 13049 events. 3267/13049 cut-off events. For 727445/753734 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 174054 event pairs, 531 based on Foata normal form. 190/12857 useless extension candidates. Maximal degree in co-relation 203453. Up to 6923 conditions per place. [2021-08-13 08:21:22,737 INFO L132 encePairwiseOnDemand]: 37/53 looper letters, 30 selfloop transitions, 9 changer transitions 3651/3724 dead transitions. [2021-08-13 08:21:22,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 3724 transitions, 191164 flow [2021-08-13 08:21:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 08:21:22,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 08:21:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 692 transitions. [2021-08-13 08:21:22,738 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7680355160932297 [2021-08-13 08:21:22,738 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 692 transitions. [2021-08-13 08:21:22,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 692 transitions. [2021-08-13 08:21:22,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:21:22,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 692 transitions. [2021-08-13 08:21:22,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 40.705882352941174) internal successors, (692), 17 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:22,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 53.0) internal successors, (954), 18 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:22,740 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 53.0) internal successors, (954), 18 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:22,740 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 336 predicate places. [2021-08-13 08:21:22,740 INFO L482 AbstractCegarLoop]: Abstraction has has 394 places, 3724 transitions, 191164 flow [2021-08-13 08:21:22,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:22,740 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:21:22,740 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:21:22,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-13 08:21:22,741 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:21:22,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:21:22,741 INFO L82 PathProgramCache]: Analyzing trace with hash -346951848, now seen corresponding path program 35 times [2021-08-13 08:21:22,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:21:22,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026215368] [2021-08-13 08:21:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:21:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:21:22,761 INFO L142 QuantifierPusher]: treesize reduction 25, result has 47.9 percent of original size [2021-08-13 08:21:22,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 08:21:22,773 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-08-13 08:21:22,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:21:22,775 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-08-13 08:21:22,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:21:22,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:22,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 08:21:22,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:22,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:21:22,796 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-08-13 08:21:22,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:21:22,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:22,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 08:21:22,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:22,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 08:21:22,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:22,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 08:21:22,833 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-08-13 08:21:22,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:21:22,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:22,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:21:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:21:22,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:21:22,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026215368] [2021-08-13 08:21:22,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026215368] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:21:22,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:21:22,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:21:22,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825890193] [2021-08-13 08:21:22,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:21:22,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:21:22,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:21:22,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:21:22,848 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:21:22,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 3724 transitions, 191164 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:22,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:21:22,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:21:22,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:21:44,777 INFO L129 PetriNetUnfolder]: 3235/12929 cut-off events. [2021-08-13 08:21:44,777 INFO L130 PetriNetUnfolder]: For 777863/804776 co-relation queries the response was YES. [2021-08-13 08:21:44,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209050 conditions, 12929 events. 3235/12929 cut-off events. For 777863/804776 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 172518 event pairs, 518 based on Foata normal form. 120/12678 useless extension candidates. Maximal degree in co-relation 208896. Up to 6872 conditions per place. [2021-08-13 08:21:44,867 INFO L132 encePairwiseOnDemand]: 43/53 looper letters, 21 selfloop transitions, 5 changer transitions 3642/3702 dead transitions. [2021-08-13 08:21:44,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 3702 transitions, 197304 flow [2021-08-13 08:21:44,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 08:21:44,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 08:21:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 330 transitions. [2021-08-13 08:21:44,868 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7783018867924528 [2021-08-13 08:21:44,868 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 330 transitions. [2021-08-13 08:21:44,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 330 transitions. [2021-08-13 08:21:44,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:21:44,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 330 transitions. [2021-08-13 08:21:44,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 41.25) internal successors, (330), 8 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:44,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:44,870 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:44,870 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 343 predicate places. [2021-08-13 08:21:44,870 INFO L482 AbstractCegarLoop]: Abstraction has has 401 places, 3702 transitions, 197304 flow [2021-08-13 08:21:44,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:44,870 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:21:44,870 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:21:44,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-13 08:21:44,870 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:21:44,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:21:44,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1545035138, now seen corresponding path program 36 times [2021-08-13 08:21:44,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:21:44,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162701111] [2021-08-13 08:21:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:21:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:21:44,894 INFO L142 QuantifierPusher]: treesize reduction 28, result has 46.2 percent of original size [2021-08-13 08:21:44,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-08-13 08:21:44,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:44,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-08-13 08:21:44,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:44,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:21:44,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:44,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 08:21:44,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:44,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:21:44,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:44,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:21:44,959 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-08-13 08:21:44,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:21:44,968 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-08-13 08:21:44,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:21:44,969 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-08-13 08:21:44,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:21:44,981 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-08-13 08:21:44,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:21:44,983 INFO L142 QuantifierPusher]: treesize reduction 22, result has 58.5 percent of original size [2021-08-13 08:21:44,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 08:21:45,015 INFO L142 QuantifierPusher]: treesize reduction 47, result has 30.9 percent of original size [2021-08-13 08:21:45,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 08:21:45,034 INFO L142 QuantifierPusher]: treesize reduction 30, result has 30.2 percent of original size [2021-08-13 08:21:45,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 08:21:45,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:21:45,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:21:45,036 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 08:21:45,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:21:45,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162701111] [2021-08-13 08:21:45,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162701111] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:21:45,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:21:45,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-13 08:21:45,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835591534] [2021-08-13 08:21:45,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 08:21:45,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:21:45,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 08:21:45,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-08-13 08:21:45,038 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-08-13 08:21:45,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 3702 transitions, 197304 flow. Second operand has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:21:45,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:21:45,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-08-13 08:21:45,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:22:12,210 INFO L129 PetriNetUnfolder]: 3411/14052 cut-off events. [2021-08-13 08:22:12,210 INFO L130 PetriNetUnfolder]: For 946006/977078 co-relation queries the response was YES. [2021-08-13 08:22:12,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232113 conditions, 14052 events. 3411/14052 cut-off events. For 946006/977078 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 191565 event pairs, 579 based on Foata normal form. 303/13936 useless extension candidates. Maximal degree in co-relation 231991. Up to 7361 conditions per place. [2021-08-13 08:22:12,316 INFO L132 encePairwiseOnDemand]: 36/53 looper letters, 0 selfloop transitions, 0 changer transitions 3994/3994 dead transitions. [2021-08-13 08:22:12,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 3994 transitions, 221330 flow [2021-08-13 08:22:12,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-13 08:22:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-08-13 08:22:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1034 transitions. [2021-08-13 08:22:12,317 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.780377358490566 [2021-08-13 08:22:12,318 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1034 transitions. [2021-08-13 08:22:12,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1034 transitions. [2021-08-13 08:22:12,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:22:12,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1034 transitions. [2021-08-13 08:22:12,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 41.36) internal successors, (1034), 25 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:12,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 53.0) internal successors, (1378), 26 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:12,320 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 53.0) internal successors, (1378), 26 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:12,321 INFO L348 CegarLoopForPetriNet]: 58 programPoint places, 363 predicate places. [2021-08-13 08:22:12,321 INFO L482 AbstractCegarLoop]: Abstraction has has 421 places, 3994 transitions, 221330 flow [2021-08-13 08:22:12,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 34.583333333333336) internal successors, (415), 12 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:12,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown