/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/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 08:31:25,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 08:31:25,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 08:31:25,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 08:31:25,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 08:31:25,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 08:31:25,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 08:31:25,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 08:31:25,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 08:31:25,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 08:31:25,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 08:31:25,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 08:31:25,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 08:31:25,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 08:31:25,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 08:31:25,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 08:31:25,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 08:31:25,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 08:31:25,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 08:31:25,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 08:31:25,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 08:31:25,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 08:31:25,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 08:31:25,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 08:31:25,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 08:31:25,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 08:31:25,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 08:31:25,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 08:31:25,678 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 08:31:25,692 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 08:31:25,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 08:31:25,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 08:31:25,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 08:31:25,694 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 08:31:25,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 08:31:25,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 08:31:25,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 08:31:25,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 08:31:25,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 08:31:25,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 08:31:25,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 08:31:25,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 08:31:25,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 08:31:25,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 08:31:25,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 08:31:25,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 08:31:25,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 08:31:25,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 08:31:25,696 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 08:31:25,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 08:31:25,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 08:31:25,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 08:31:25,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 08:31:25,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 08:31:25,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 08:31:25,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 08:31:25,697 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 08:31:25,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 08:31:25,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 08:31:25,697 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 08:31:25,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 08:31:25,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 08:31:25,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 08:31:25,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 08:31:25,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 08:31:25,943 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 08:31:25,944 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 08:31:25,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-08-13 08:31:25,945 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-08-13 08:31:25,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 08:31:25,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 08:31:25,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 08:31:25,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 08:31:25,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 08:31:25,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:31:25" (1/1) ... [2021-08-13 08:31:25,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:31:25" (1/1) ... [2021-08-13 08:31:25,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 08:31:25,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 08:31:25,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 08:31:25,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 08:31:25,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:31:25" (1/1) ... [2021-08-13 08:31:25,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:31:25" (1/1) ... [2021-08-13 08:31:25,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:31:25" (1/1) ... [2021-08-13 08:31:25,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:31:25" (1/1) ... [2021-08-13 08:31:25,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:31:25" (1/1) ... [2021-08-13 08:31:25,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:31:25" (1/1) ... [2021-08-13 08:31:25,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:31:25" (1/1) ... [2021-08-13 08:31:25,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 08:31:25,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 08:31:25,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 08:31:25,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 08:31:25,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:31:25" (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 08:31:26,048 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 08:31:26,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 08:31:26,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 08:31:26,049 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 08:31:26,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 08:31:26,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 08:31:26,049 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 08:31:26,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 08:31:26,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 08:31:26,049 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-13 08:31:26,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-13 08:31:26,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-13 08:31:26,050 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-13 08:31:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-13 08:31:26,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-13 08:31:26,050 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-08-13 08:31:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-08-13 08:31:26,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-08-13 08:31:26,051 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 08:31:26,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 08:31:26,241 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 08:31:26,243 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 08:31:26 BoogieIcfgContainer [2021-08-13 08:31:26,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 08:31:26,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 08:31:26,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 08:31:26,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 08:31:26,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:31:25" (1/2) ... [2021-08-13 08:31:26,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769b7af3 and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 08:31:26, skipping insertion in model container [2021-08-13 08:31:26,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 08:31:26" (2/2) ... [2021-08-13 08:31:26,248 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-08-13 08:31:26,252 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 08:31:26,252 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 08:31:26,252 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 08:31:26,290 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-08-13 08:31:26,306 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-13 08:31:26,330 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 08:31:26,330 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 08:31:26,330 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 08:31:26,330 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 08:31:26,330 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 08:31:26,330 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 08:31:26,331 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 08:31:26,331 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 08:31:26,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 46 transitions, 132 flow [2021-08-13 08:31:26,385 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-08-13 08:31:26,385 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-08-13 08:31:26,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 41 events. 0/41 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 08:31:26,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 46 transitions, 132 flow [2021-08-13 08:31:26,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 39 transitions, 108 flow [2021-08-13 08:31:26,412 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-08-13 08:31:26,412 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-08-13 08:31:26,412 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:31:26,413 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:31:26,413 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:31:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:31:26,417 INFO L82 PathProgramCache]: Analyzing trace with hash 845413524, now seen corresponding path program 1 times [2021-08-13 08:31:26,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:31:26,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846679315] [2021-08-13 08:31:26,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:31:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:31:26,654 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-08-13 08:31:26,655 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-08-13 08:31:26,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:26,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:31:26,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:26,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:31:26,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:26,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 08:31:26,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:26,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:31:26,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:26,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:31:26,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:26,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 08:31:26,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:26,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:31:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:31:26,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:31:26,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846679315] [2021-08-13 08:31:26,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846679315] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:31:26,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:31:26,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 08:31:26,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695617205] [2021-08-13 08:31:26,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 08:31:26,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:31:26,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 08:31:26,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-13 08:31:26,704 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 46 [2021-08-13 08:31:26,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:26,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:31:26,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 46 [2021-08-13 08:31:26,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:31:27,000 INFO L129 PetriNetUnfolder]: 1023/2303 cut-off events. [2021-08-13 08:31:27,001 INFO L130 PetriNetUnfolder]: For 172/172 co-relation queries the response was YES. [2021-08-13 08:31:27,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3970 conditions, 2303 events. 1023/2303 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18549 event pairs, 452 based on Foata normal form. 1/2283 useless extension candidates. Maximal degree in co-relation 3939. Up to 810 conditions per place. [2021-08-13 08:31:27,021 INFO L132 encePairwiseOnDemand]: 33/46 looper letters, 23 selfloop transitions, 11 changer transitions 1/61 dead transitions. [2021-08-13 08:31:27,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 222 flow [2021-08-13 08:31:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:31:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:31:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 196 transitions. [2021-08-13 08:31:27,030 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8521739130434782 [2021-08-13 08:31:27,031 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 196 transitions. [2021-08-13 08:31:27,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 196 transitions. [2021-08-13 08:31:27,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:31:27,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 196 transitions. [2021-08-13 08:31:27,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:27,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:27,046 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:27,047 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2021-08-13 08:31:27,047 INFO L482 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 222 flow [2021-08-13 08:31:27,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:27,047 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:31:27,048 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:31:27,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 08:31:27,048 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:31:27,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:31:27,050 INFO L82 PathProgramCache]: Analyzing trace with hash 784312606, now seen corresponding path program 2 times [2021-08-13 08:31:27,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:31:27,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581151771] [2021-08-13 08:31:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:31:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:31:27,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:27,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:31:27,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:27,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:27,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:27,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:27,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:27,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:27,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:27,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:27,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:27,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:27,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:27,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:31:27,118 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 08:31:27,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:31:27,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581151771] [2021-08-13 08:31:27,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581151771] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:31:27,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:31:27,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 08:31:27,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709278041] [2021-08-13 08:31:27,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 08:31:27,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:31:27,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 08:31:27,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-13 08:31:27,121 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:31:27,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 222 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:27,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:31:27,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:31:27,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:31:29,495 INFO L129 PetriNetUnfolder]: 21559/32855 cut-off events. [2021-08-13 08:31:29,495 INFO L130 PetriNetUnfolder]: For 7273/7435 co-relation queries the response was YES. [2021-08-13 08:31:29,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72946 conditions, 32855 events. 21559/32855 cut-off events. For 7273/7435 co-relation queries the response was YES. Maximal size of possible extension queue 2054. Compared 254953 event pairs, 5642 based on Foata normal form. 87/30761 useless extension candidates. Maximal degree in co-relation 72913. Up to 10493 conditions per place. [2021-08-13 08:31:29,790 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 57 selfloop transitions, 72 changer transitions 0/161 dead transitions. [2021-08-13 08:31:29,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 161 transitions, 784 flow [2021-08-13 08:31:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 08:31:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 08:31:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 322 transitions. [2021-08-13 08:31:29,794 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-08-13 08:31:29,794 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 322 transitions. [2021-08-13 08:31:29,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 322 transitions. [2021-08-13 08:31:29,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:31:29,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 322 transitions. [2021-08-13 08:31:29,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.25) internal successors, (322), 8 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:29,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:29,797 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:29,797 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2021-08-13 08:31:29,797 INFO L482 AbstractCegarLoop]: Abstraction has has 66 places, 161 transitions, 784 flow [2021-08-13 08:31:29,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:29,798 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:31:29,798 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:31:29,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 08:31:29,798 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:31:29,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:31:29,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1452761740, now seen corresponding path program 3 times [2021-08-13 08:31:29,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:31:29,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817865870] [2021-08-13 08:31:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:31:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:31:29,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:29,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:31:29,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:29,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:29,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:29,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:29,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:29,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:29,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:29,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:29,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:29,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:29,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:29,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:29,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:29,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:29,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:29,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:31:29,840 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 08:31:29,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:31:29,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817865870] [2021-08-13 08:31:29,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817865870] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:31:29,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:31:29,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 08:31:29,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211833487] [2021-08-13 08:31:29,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 08:31:29,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:31:29,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 08:31:29,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-13 08:31:29,842 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:31:29,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 161 transitions, 784 flow. Second operand has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:29,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:31:29,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:31:29,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:31:33,173 INFO L129 PetriNetUnfolder]: 28561/46995 cut-off events. [2021-08-13 08:31:33,173 INFO L130 PetriNetUnfolder]: For 26029/29530 co-relation queries the response was YES. [2021-08-13 08:31:33,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133951 conditions, 46995 events. 28561/46995 cut-off events. For 26029/29530 co-relation queries the response was YES. Maximal size of possible extension queue 3154. Compared 425513 event pairs, 6233 based on Foata normal form. 1129/45560 useless extension candidates. Maximal degree in co-relation 133916. Up to 13561 conditions per place. [2021-08-13 08:31:33,492 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 174 selfloop transitions, 99 changer transitions 0/305 dead transitions. [2021-08-13 08:31:33,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 305 transitions, 2050 flow [2021-08-13 08:31:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 08:31:33,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 08:31:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2021-08-13 08:31:33,495 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8623188405797102 [2021-08-13 08:31:33,495 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 238 transitions. [2021-08-13 08:31:33,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 238 transitions. [2021-08-13 08:31:33,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:31:33,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 238 transitions. [2021-08-13 08:31:33,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.666666666666664) internal successors, (238), 6 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:33,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:33,497 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:33,497 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2021-08-13 08:31:33,498 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 305 transitions, 2050 flow [2021-08-13 08:31:33,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:33,498 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:31:33,498 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:31:33,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 08:31:33,498 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:31:33,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:31:33,499 INFO L82 PathProgramCache]: Analyzing trace with hash -726951234, now seen corresponding path program 4 times [2021-08-13 08:31:33,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:31:33,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642084830] [2021-08-13 08:31:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:31:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:31:33,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:33,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:31:33,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:33,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:33,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:33,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:33,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:33,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:31:33,538 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 08:31:33,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:31:33,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642084830] [2021-08-13 08:31:33,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642084830] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:31:33,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:31:33,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 08:31:33,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007803299] [2021-08-13 08:31:33,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 08:31:33,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:31:33,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 08:31:33,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 08:31:33,539 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:31:33,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 305 transitions, 2050 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:33,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:31:33,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:31:33,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:31:37,022 INFO L129 PetriNetUnfolder]: 29707/48145 cut-off events. [2021-08-13 08:31:37,022 INFO L130 PetriNetUnfolder]: For 52298/58263 co-relation queries the response was YES. [2021-08-13 08:31:37,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169976 conditions, 48145 events. 29707/48145 cut-off events. For 52298/58263 co-relation queries the response was YES. Maximal size of possible extension queue 3069. Compared 425511 event pairs, 6585 based on Foata normal form. 908/46670 useless extension candidates. Maximal degree in co-relation 169939. Up to 28079 conditions per place. [2021-08-13 08:31:37,505 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 373 selfloop transitions, 75 changer transitions 1/481 dead transitions. [2021-08-13 08:31:37,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 481 transitions, 4172 flow [2021-08-13 08:31:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:31:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:31:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-08-13 08:31:37,526 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-08-13 08:31:37,526 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-08-13 08:31:37,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-08-13 08:31:37,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:31:37,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-08-13 08:31:37,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:37,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:37,527 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:37,528 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2021-08-13 08:31:37,528 INFO L482 AbstractCegarLoop]: Abstraction has has 75 places, 481 transitions, 4172 flow [2021-08-13 08:31:37,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:37,528 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:31:37,528 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:31:37,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 08:31:37,528 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:31:37,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:31:37,528 INFO L82 PathProgramCache]: Analyzing trace with hash -79446480, now seen corresponding path program 5 times [2021-08-13 08:31:37,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:31:37,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222399713] [2021-08-13 08:31:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:31:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:31:37,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:37,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:31:37,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:37,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:37,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:37,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:37,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:37,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:37,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:37,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:37,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:37,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:37,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:37,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:37,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:37,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:31:37,584 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 08:31:37,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:31:37,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222399713] [2021-08-13 08:31:37,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222399713] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:31:37,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:31:37,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:31:37,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589159644] [2021-08-13 08:31:37,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:31:37,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:31:37,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:31:37,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:31:37,586 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:31:37,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 481 transitions, 4172 flow. Second operand has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:37,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:31:37,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:31:37,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:31:41,950 INFO L129 PetriNetUnfolder]: 31077/50272 cut-off events. [2021-08-13 08:31:41,951 INFO L130 PetriNetUnfolder]: For 93087/102563 co-relation queries the response was YES. [2021-08-13 08:31:42,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210432 conditions, 50272 events. 31077/50272 cut-off events. For 93087/102563 co-relation queries the response was YES. Maximal size of possible extension queue 3221. Compared 445136 event pairs, 6892 based on Foata normal form. 1651/49475 useless extension candidates. Maximal degree in co-relation 210393. Up to 28905 conditions per place. [2021-08-13 08:31:42,328 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 198 selfloop transitions, 303 changer transitions 1/534 dead transitions. [2021-08-13 08:31:42,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 534 transitions, 5634 flow [2021-08-13 08:31:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 08:31:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 08:31:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2021-08-13 08:31:42,330 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8717391304347826 [2021-08-13 08:31:42,330 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 401 transitions. [2021-08-13 08:31:42,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 401 transitions. [2021-08-13 08:31:42,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:31:42,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 401 transitions. [2021-08-13 08:31:42,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.1) internal successors, (401), 10 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:42,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 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 08:31:42,333 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 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 08:31:42,333 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2021-08-13 08:31:42,333 INFO L482 AbstractCegarLoop]: Abstraction has has 84 places, 534 transitions, 5634 flow [2021-08-13 08:31:42,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:42,334 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:31:42,334 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:31:42,334 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 08:31:42,334 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:31:42,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:31:42,334 INFO L82 PathProgramCache]: Analyzing trace with hash 777061248, now seen corresponding path program 6 times [2021-08-13 08:31:42,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:31:42,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089050015] [2021-08-13 08:31:42,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:31:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:31:42,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:42,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:31:42,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:42,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:42,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:42,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:42,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:42,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:42,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:42,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:31:42,367 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 08:31:42,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:31:42,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089050015] [2021-08-13 08:31:42,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089050015] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:31:42,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:31:42,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 08:31:42,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783710356] [2021-08-13 08:31:42,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 08:31:42,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:31:42,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 08:31:42,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-13 08:31:42,369 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:31:42,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 534 transitions, 5634 flow. Second operand has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:42,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:31:42,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:31:42,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:31:47,205 INFO L129 PetriNetUnfolder]: 31552/51192 cut-off events. [2021-08-13 08:31:47,206 INFO L130 PetriNetUnfolder]: For 144324/154355 co-relation queries the response was YES. [2021-08-13 08:31:47,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248694 conditions, 51192 events. 31552/51192 cut-off events. For 144324/154355 co-relation queries the response was YES. Maximal size of possible extension queue 3195. Compared 456519 event pairs, 7447 based on Foata normal form. 1973/50719 useless extension candidates. Maximal degree in co-relation 248653. Up to 29608 conditions per place. [2021-08-13 08:31:47,686 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 394 selfloop transitions, 245 changer transitions 4/675 dead transitions. [2021-08-13 08:31:47,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 675 transitions, 8440 flow [2021-08-13 08:31:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 08:31:47,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 08:31:47,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2021-08-13 08:31:47,687 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8623188405797102 [2021-08-13 08:31:47,687 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 238 transitions. [2021-08-13 08:31:47,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 238 transitions. [2021-08-13 08:31:47,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:31:47,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 238 transitions. [2021-08-13 08:31:47,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.666666666666664) internal successors, (238), 6 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:47,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:47,689 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:47,689 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2021-08-13 08:31:47,689 INFO L482 AbstractCegarLoop]: Abstraction has has 89 places, 675 transitions, 8440 flow [2021-08-13 08:31:47,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:47,689 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:31:47,689 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:31:47,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 08:31:47,690 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:31:47,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:31:47,690 INFO L82 PathProgramCache]: Analyzing trace with hash -228704232, now seen corresponding path program 7 times [2021-08-13 08:31:47,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:31:47,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319393515] [2021-08-13 08:31:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:31:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:31:47,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:47,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:31:47,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:47,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:47,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:47,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:47,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:47,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:47,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:47,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:47,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:47,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:47,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:47,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:47,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:47,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:31:47,740 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 08:31:47,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:31:47,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319393515] [2021-08-13 08:31:47,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319393515] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:31:47,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:31:47,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:31:47,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002375366] [2021-08-13 08:31:47,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:31:47,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:31:47,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:31:47,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:31:47,742 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:31:47,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 675 transitions, 8440 flow. Second operand has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:47,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:31:47,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:31:47,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:31:53,442 INFO L129 PetriNetUnfolder]: 33842/54722 cut-off events. [2021-08-13 08:31:53,443 INFO L130 PetriNetUnfolder]: For 216244/227597 co-relation queries the response was YES. [2021-08-13 08:31:53,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 300565 conditions, 54722 events. 33842/54722 cut-off events. For 216244/227597 co-relation queries the response was YES. Maximal size of possible extension queue 3461. Compared 488558 event pairs, 8168 based on Foata normal form. 1037/53202 useless extension candidates. Maximal degree in co-relation 300522. Up to 30956 conditions per place. [2021-08-13 08:31:53,910 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 335 selfloop transitions, 429 changer transitions 4/800 dead transitions. [2021-08-13 08:31:53,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 800 transitions, 11530 flow [2021-08-13 08:31:53,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 08:31:53,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 08:31:53,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2021-08-13 08:31:53,912 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8717391304347826 [2021-08-13 08:31:53,912 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 401 transitions. [2021-08-13 08:31:53,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 401 transitions. [2021-08-13 08:31:53,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:31:53,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 401 transitions. [2021-08-13 08:31:53,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.1) internal successors, (401), 10 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:53,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 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 08:31:53,914 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 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 08:31:53,914 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2021-08-13 08:31:53,914 INFO L482 AbstractCegarLoop]: Abstraction has has 98 places, 800 transitions, 11530 flow [2021-08-13 08:31:53,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:53,915 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:31:53,915 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:31:53,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 08:31:53,915 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:31:53,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:31:53,915 INFO L82 PathProgramCache]: Analyzing trace with hash 2086673280, now seen corresponding path program 8 times [2021-08-13 08:31:53,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:31:53,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359829568] [2021-08-13 08:31:53,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:31:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:31:53,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:53,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:31:53,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:53,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:53,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:53,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:53,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:53,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:53,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:53,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:53,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:53,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:31:53,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:31:53,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:31:53,955 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 08:31:53,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:31:53,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359829568] [2021-08-13 08:31:53,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359829568] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:31:53,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:31:53,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 08:31:53,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214204736] [2021-08-13 08:31:53,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 08:31:53,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:31:53,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 08:31:53,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-13 08:31:53,957 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:31:53,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 800 transitions, 11530 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:31:53,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:31:53,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:31:53,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:32:01,095 INFO L129 PetriNetUnfolder]: 36857/60484 cut-off events. [2021-08-13 08:32:01,096 INFO L130 PetriNetUnfolder]: For 319652/333779 co-relation queries the response was YES. [2021-08-13 08:32:01,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 370918 conditions, 60484 events. 36857/60484 cut-off events. For 319652/333779 co-relation queries the response was YES. Maximal size of possible extension queue 3877. Compared 557659 event pairs, 8652 based on Foata normal form. 1642/59375 useless extension candidates. Maximal degree in co-relation 370873. Up to 34638 conditions per place. [2021-08-13 08:32:01,649 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 482 selfloop transitions, 418 changer transitions 4/936 dead transitions. [2021-08-13 08:32:01,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 936 transitions, 15334 flow [2021-08-13 08:32:01,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 08:32:01,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 08:32:01,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-08-13 08:32:01,651 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-08-13 08:32:01,651 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-08-13 08:32:01,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-08-13 08:32:01,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:32:01,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-08-13 08:32:01,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.55555555555556) internal successors, (365), 9 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:01,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:01,653 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:01,653 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2021-08-13 08:32:01,653 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 936 transitions, 15334 flow [2021-08-13 08:32:01,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:01,654 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:32:01,654 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:32:01,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 08:32:01,654 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:32:01,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:32:01,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1596078402, now seen corresponding path program 9 times [2021-08-13 08:32:01,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:32:01,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832512457] [2021-08-13 08:32:01,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:32:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:32:01,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:01,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:32:01,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:01,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:01,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:01,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:01,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:01,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:01,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:01,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:01,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:01,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:01,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:01,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:32:01,704 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 08:32:01,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:32:01,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832512457] [2021-08-13 08:32:01,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832512457] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:32:01,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:32:01,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 08:32:01,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197091859] [2021-08-13 08:32:01,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 08:32:01,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:32:01,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 08:32:01,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-13 08:32:01,706 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:32:01,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 936 transitions, 15334 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:01,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:32:01,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:32:01,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:32:09,771 INFO L129 PetriNetUnfolder]: 39099/64446 cut-off events. [2021-08-13 08:32:09,771 INFO L130 PetriNetUnfolder]: For 445132/461577 co-relation queries the response was YES. [2021-08-13 08:32:10,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 436592 conditions, 64446 events. 39099/64446 cut-off events. For 445132/461577 co-relation queries the response was YES. Maximal size of possible extension queue 4201. Compared 602298 event pairs, 9168 based on Foata normal form. 1936/63600 useless extension candidates. Maximal degree in co-relation 436545. Up to 36658 conditions per place. [2021-08-13 08:32:10,576 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 574 selfloop transitions, 488 changer transitions 4/1098 dead transitions. [2021-08-13 08:32:10,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 1098 transitions, 20158 flow [2021-08-13 08:32:10,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 08:32:10,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 08:32:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-08-13 08:32:10,582 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-08-13 08:32:10,582 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-08-13 08:32:10,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-08-13 08:32:10,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:32:10,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-08-13 08:32:10,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.55555555555556) internal successors, (365), 9 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:10,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:10,585 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:10,585 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2021-08-13 08:32:10,585 INFO L482 AbstractCegarLoop]: Abstraction has has 114 places, 1098 transitions, 20158 flow [2021-08-13 08:32:10,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:10,586 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:32:10,586 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:32:10,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 08:32:10,586 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:32:10,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:32:10,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1938558694, now seen corresponding path program 10 times [2021-08-13 08:32:10,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:32:10,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684347358] [2021-08-13 08:32:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:32:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:32:10,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:10,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:32:10,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:10,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:10,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:10,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:10,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:10,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:10,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:10,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:10,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:10,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:10,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:10,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:10,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:10,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:10,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:10,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:32:10,662 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 08:32:10,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:32:10,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684347358] [2021-08-13 08:32:10,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684347358] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:32:10,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:32:10,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 08:32:10,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712336783] [2021-08-13 08:32:10,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 08:32:10,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:32:10,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 08:32:10,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-13 08:32:10,664 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:32:10,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 1098 transitions, 20158 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:10,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:32:10,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:32:10,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:32:19,614 INFO L129 PetriNetUnfolder]: 39335/65003 cut-off events. [2021-08-13 08:32:19,614 INFO L130 PetriNetUnfolder]: For 567057/585916 co-relation queries the response was YES. [2021-08-13 08:32:20,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 482429 conditions, 65003 events. 39335/65003 cut-off events. For 567057/585916 co-relation queries the response was YES. Maximal size of possible extension queue 4231. Compared 611203 event pairs, 9203 based on Foata normal form. 1249/63458 useless extension candidates. Maximal degree in co-relation 482380. Up to 36960 conditions per place. [2021-08-13 08:32:20,476 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 462 selfloop transitions, 624 changer transitions 4/1122 dead transitions. [2021-08-13 08:32:20,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 1122 transitions, 22770 flow [2021-08-13 08:32:20,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 08:32:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 08:32:20,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 520 transitions. [2021-08-13 08:32:20,478 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-08-13 08:32:20,479 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 520 transitions. [2021-08-13 08:32:20,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 520 transitions. [2021-08-13 08:32:20,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:32:20,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 520 transitions. [2021-08-13 08:32:20,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.0) internal successors, (520), 13 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 08:32:20,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:20,481 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:20,481 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 71 predicate places. [2021-08-13 08:32:20,481 INFO L482 AbstractCegarLoop]: Abstraction has has 126 places, 1122 transitions, 22770 flow [2021-08-13 08:32:20,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:20,481 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:32:20,481 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:32:20,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 08:32:20,482 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:32:20,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:32:20,482 INFO L82 PathProgramCache]: Analyzing trace with hash -590845340, now seen corresponding path program 11 times [2021-08-13 08:32:20,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:32:20,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685021240] [2021-08-13 08:32:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:32:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:32:20,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:20,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:32:20,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:20,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:20,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:20,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:20,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:20,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:32:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:32:20,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:32:20,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685021240] [2021-08-13 08:32:20,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685021240] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:32:20,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:32:20,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 08:32:20,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507439286] [2021-08-13 08:32:20,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 08:32:20,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:32:20,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 08:32:20,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 08:32:20,503 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:32:20,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 1122 transitions, 22770 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:20,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:32:20,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:32:20,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:32:29,324 INFO L129 PetriNetUnfolder]: 35896/60022 cut-off events. [2021-08-13 08:32:29,324 INFO L130 PetriNetUnfolder]: For 658428/679511 co-relation queries the response was YES. [2021-08-13 08:32:29,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 486959 conditions, 60022 events. 35896/60022 cut-off events. For 658428/679511 co-relation queries the response was YES. Maximal size of possible extension queue 4047. Compared 568519 event pairs, 8662 based on Foata normal form. 1021/58324 useless extension candidates. Maximal degree in co-relation 486908. Up to 35288 conditions per place. [2021-08-13 08:32:30,065 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 961 selfloop transitions, 262 changer transitions 77/1332 dead transitions. [2021-08-13 08:32:30,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 1332 transitions, 29726 flow [2021-08-13 08:32:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:32:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:32:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-08-13 08:32:30,066 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-08-13 08:32:30,066 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-08-13 08:32:30,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-08-13 08:32:30,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:32:30,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-08-13 08:32:30,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:30,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:30,068 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:30,068 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 75 predicate places. [2021-08-13 08:32:30,068 INFO L482 AbstractCegarLoop]: Abstraction has has 130 places, 1332 transitions, 29726 flow [2021-08-13 08:32:30,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:30,068 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:32:30,068 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:32:30,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 08:32:30,068 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:32:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:32:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash 324061566, now seen corresponding path program 12 times [2021-08-13 08:32:30,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:32:30,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479370543] [2021-08-13 08:32:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:32:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:32:30,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:30,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:32:30,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:30,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:30,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:30,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:30,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:30,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:30,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:30,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:30,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:30,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:30,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:30,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:30,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:30,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:32:30,119 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 08:32:30,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:32:30,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479370543] [2021-08-13 08:32:30,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479370543] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:32:30,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:32:30,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 08:32:30,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579596315] [2021-08-13 08:32:30,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 08:32:30,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:32:30,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 08:32:30,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-13 08:32:30,120 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:32:30,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 1332 transitions, 29726 flow. Second operand has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:30,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:32:30,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:32:30,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:32:40,441 INFO L129 PetriNetUnfolder]: 37813/63687 cut-off events. [2021-08-13 08:32:40,441 INFO L130 PetriNetUnfolder]: For 821884/844424 co-relation queries the response was YES. [2021-08-13 08:32:40,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 554951 conditions, 63687 events. 37813/63687 cut-off events. For 821884/844424 co-relation queries the response was YES. Maximal size of possible extension queue 4224. Compared 612441 event pairs, 9353 based on Foata normal form. 1566/62550 useless extension candidates. Maximal degree in co-relation 554898. Up to 36698 conditions per place. [2021-08-13 08:32:41,275 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 646 selfloop transitions, 806 changer transitions 85/1569 dead transitions. [2021-08-13 08:32:41,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 1569 transitions, 38088 flow [2021-08-13 08:32:41,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 08:32:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 08:32:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2021-08-13 08:32:41,277 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8717391304347826 [2021-08-13 08:32:41,277 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 401 transitions. [2021-08-13 08:32:41,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 401 transitions. [2021-08-13 08:32:41,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:32:41,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 401 transitions. [2021-08-13 08:32:41,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.1) internal successors, (401), 10 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:41,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 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 08:32:41,279 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 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 08:32:41,279 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 84 predicate places. [2021-08-13 08:32:41,279 INFO L482 AbstractCegarLoop]: Abstraction has has 139 places, 1569 transitions, 38088 flow [2021-08-13 08:32:41,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:41,279 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:32:41,279 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:32:41,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 08:32:41,279 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:32:41,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:32:41,279 INFO L82 PathProgramCache]: Analyzing trace with hash 480618148, now seen corresponding path program 13 times [2021-08-13 08:32:41,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:32:41,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677530642] [2021-08-13 08:32:41,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:32:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:32:41,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:41,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:32:41,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:41,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:41,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:41,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:41,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:41,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:41,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:41,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:41,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:41,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:41,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:41,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:41,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:41,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:41,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:41,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:32:41,332 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 08:32:41,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:32:41,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677530642] [2021-08-13 08:32:41,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677530642] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:32:41,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:32:41,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 08:32:41,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917695742] [2021-08-13 08:32:41,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 08:32:41,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:32:41,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 08:32:41,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-13 08:32:41,334 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:32:41,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 1569 transitions, 38088 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:41,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:32:41,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:32:41,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:32:53,435 INFO L129 PetriNetUnfolder]: 38523/65275 cut-off events. [2021-08-13 08:32:53,435 INFO L130 PetriNetUnfolder]: For 1015554/1039317 co-relation queries the response was YES. [2021-08-13 08:32:53,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 611976 conditions, 65275 events. 38523/65275 cut-off events. For 1015554/1039317 co-relation queries the response was YES. Maximal size of possible extension queue 4357. Compared 634610 event pairs, 9593 based on Foata normal form. 1694/64341 useless extension candidates. Maximal degree in co-relation 611921. Up to 37522 conditions per place. [2021-08-13 08:32:54,307 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 734 selfloop transitions, 905 changer transitions 85/1756 dead transitions. [2021-08-13 08:32:54,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 1756 transitions, 46118 flow [2021-08-13 08:32:54,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 08:32:54,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 08:32:54,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 521 transitions. [2021-08-13 08:32:54,308 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8712374581939799 [2021-08-13 08:32:54,308 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 521 transitions. [2021-08-13 08:32:54,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 521 transitions. [2021-08-13 08:32:54,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:32:54,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 521 transitions. [2021-08-13 08:32:54,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.07692307692308) internal successors, (521), 13 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:54,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:54,311 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:54,311 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 96 predicate places. [2021-08-13 08:32:54,311 INFO L482 AbstractCegarLoop]: Abstraction has has 151 places, 1756 transitions, 46118 flow [2021-08-13 08:32:54,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:54,311 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:32:54,311 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:32:54,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 08:32:54,311 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:32:54,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:32:54,312 INFO L82 PathProgramCache]: Analyzing trace with hash -49070656, now seen corresponding path program 14 times [2021-08-13 08:32:54,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:32:54,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836274385] [2021-08-13 08:32:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:32:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:32:54,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:54,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:32:54,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:54,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:54,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:54,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:32:54,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:32:54,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:32:54,348 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 08:32:54,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:32:54,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836274385] [2021-08-13 08:32:54,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836274385] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:32:54,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:32:54,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 08:32:54,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733762655] [2021-08-13 08:32:54,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 08:32:54,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:32:54,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 08:32:54,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 08:32:54,350 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:32:54,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 1756 transitions, 46118 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:32:54,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:32:54,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:32:54,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:33:07,159 INFO L129 PetriNetUnfolder]: 37312/63438 cut-off events. [2021-08-13 08:33:07,160 INFO L130 PetriNetUnfolder]: For 1155937/1183027 co-relation queries the response was YES. [2021-08-13 08:33:07,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 636940 conditions, 63438 events. 37312/63438 cut-off events. For 1155937/1183027 co-relation queries the response was YES. Maximal size of possible extension queue 4297. Compared 617276 event pairs, 9356 based on Foata normal form. 678/61428 useless extension candidates. Maximal degree in co-relation 636883. Up to 36990 conditions per place. [2021-08-13 08:33:08,066 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 1329 selfloop transitions, 411 changer transitions 127/1899 dead transitions. [2021-08-13 08:33:08,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 1899 transitions, 53676 flow [2021-08-13 08:33:08,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:33:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:33:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-08-13 08:33:08,074 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-08-13 08:33:08,074 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-08-13 08:33:08,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-08-13 08:33:08,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:33:08,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-08-13 08:33:08,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:08,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:08,075 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:08,075 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 100 predicate places. [2021-08-13 08:33:08,075 INFO L482 AbstractCegarLoop]: Abstraction has has 155 places, 1899 transitions, 53676 flow [2021-08-13 08:33:08,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:08,075 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:33:08,075 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:33:08,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 08:33:08,075 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:33:08,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:33:08,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1182662166, now seen corresponding path program 15 times [2021-08-13 08:33:08,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:33:08,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669426596] [2021-08-13 08:33:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:33:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:33:08,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:08,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:33:08,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:08,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:08,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:08,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:08,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:08,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:08,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:08,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:08,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:08,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:08,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:08,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:08,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:08,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:08,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:08,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:33:08,122 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 08:33:08,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:33:08,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669426596] [2021-08-13 08:33:08,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669426596] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:33:08,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:33:08,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 08:33:08,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491263911] [2021-08-13 08:33:08,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 08:33:08,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:33:08,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 08:33:08,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-13 08:33:08,123 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:33:08,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 1899 transitions, 53676 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:08,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:33:08,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:33:08,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:33:22,830 INFO L129 PetriNetUnfolder]: 37430/63885 cut-off events. [2021-08-13 08:33:22,830 INFO L130 PetriNetUnfolder]: For 1340315/1370539 co-relation queries the response was YES. [2021-08-13 08:33:23,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 682258 conditions, 63885 events. 37430/63885 cut-off events. For 1340315/1370539 co-relation queries the response was YES. Maximal size of possible extension queue 4381. Compared 625842 event pairs, 9360 based on Foata normal form. 775/61976 useless extension candidates. Maximal degree in co-relation 682199. Up to 37213 conditions per place. [2021-08-13 08:33:23,746 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 789 selfloop transitions, 975 changer transitions 127/1923 dead transitions. [2021-08-13 08:33:23,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 1923 transitions, 58130 flow [2021-08-13 08:33:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 08:33:23,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 08:33:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 520 transitions. [2021-08-13 08:33:23,747 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-08-13 08:33:23,747 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 520 transitions. [2021-08-13 08:33:23,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 520 transitions. [2021-08-13 08:33:23,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:33:23,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 520 transitions. [2021-08-13 08:33:23,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.0) internal successors, (520), 13 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 08:33:23,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:23,749 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:23,749 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 112 predicate places. [2021-08-13 08:33:23,749 INFO L482 AbstractCegarLoop]: Abstraction has has 167 places, 1923 transitions, 58130 flow [2021-08-13 08:33:23,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:23,750 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:33:23,750 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:33:23,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 08:33:23,750 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:33:23,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:33:23,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1105730754, now seen corresponding path program 16 times [2021-08-13 08:33:23,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:33:23,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538056425] [2021-08-13 08:33:23,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:33:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:33:23,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:23,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:33:23,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:23,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:23,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:23,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:23,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:23,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:33:23,767 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 08:33:23,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:33:23,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538056425] [2021-08-13 08:33:23,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538056425] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:33:23,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:33:23,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 08:33:23,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606047374] [2021-08-13 08:33:23,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 08:33:23,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:33:23,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 08:33:23,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 08:33:23,768 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:33:23,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 1923 transitions, 58130 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:23,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:33:23,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:33:23,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:33:37,980 INFO L129 PetriNetUnfolder]: 35402/61289 cut-off events. [2021-08-13 08:33:37,980 INFO L130 PetriNetUnfolder]: For 1458799/1491720 co-relation queries the response was YES. [2021-08-13 08:33:38,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 692768 conditions, 61289 events. 35402/61289 cut-off events. For 1458799/1491720 co-relation queries the response was YES. Maximal size of possible extension queue 4372. Compared 608873 event pairs, 9052 based on Foata normal form. 687/59335 useless extension candidates. Maximal degree in co-relation 692707. Up to 36510 conditions per place. [2021-08-13 08:33:38,739 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 1372 selfloop transitions, 416 changer transitions 171/1991 dead transitions. [2021-08-13 08:33:38,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 1991 transitions, 64148 flow [2021-08-13 08:33:38,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:33:38,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:33:38,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-08-13 08:33:38,740 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-08-13 08:33:38,740 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-08-13 08:33:38,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-08-13 08:33:38,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:33:38,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-08-13 08:33:38,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:38,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:38,741 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:38,741 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 116 predicate places. [2021-08-13 08:33:38,741 INFO L482 AbstractCegarLoop]: Abstraction has has 171 places, 1991 transitions, 64148 flow [2021-08-13 08:33:38,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:38,741 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:33:38,741 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:33:38,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 08:33:38,741 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:33:38,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:33:38,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2095215536, now seen corresponding path program 17 times [2021-08-13 08:33:38,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:33:38,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700565399] [2021-08-13 08:33:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:33:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:33:38,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:38,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:33:38,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:38,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:38,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:38,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:38,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:38,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:38,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:38,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:38,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:38,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:33:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:33:38,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:33:38,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700565399] [2021-08-13 08:33:38,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700565399] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:33:38,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:33:38,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:33:38,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458185673] [2021-08-13 08:33:38,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:33:38,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:33:38,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:33:38,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:33:38,780 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:33:38,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 1991 transitions, 64148 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:38,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:33:38,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:33:38,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:33:56,299 INFO L129 PetriNetUnfolder]: 37661/65666 cut-off events. [2021-08-13 08:33:56,299 INFO L130 PetriNetUnfolder]: For 1790742/1828235 co-relation queries the response was YES. [2021-08-13 08:33:56,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 786708 conditions, 65666 events. 37661/65666 cut-off events. For 1790742/1828235 co-relation queries the response was YES. Maximal size of possible extension queue 4734. Compared 666420 event pairs, 9629 based on Foata normal form. 1910/64765 useless extension candidates. Maximal degree in co-relation 786645. Up to 39467 conditions per place. [2021-08-13 08:33:57,288 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 1200 selfloop transitions, 835 changer transitions 224/2291 dead transitions. [2021-08-13 08:33:57,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 2291 transitions, 78450 flow [2021-08-13 08:33:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 08:33:57,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 08:33:57,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 321 transitions. [2021-08-13 08:33:57,289 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8722826086956522 [2021-08-13 08:33:57,289 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 321 transitions. [2021-08-13 08:33:57,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 321 transitions. [2021-08-13 08:33:57,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:33:57,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 321 transitions. [2021-08-13 08:33:57,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.125) internal successors, (321), 8 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:57,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:57,290 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:57,291 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 123 predicate places. [2021-08-13 08:33:57,291 INFO L482 AbstractCegarLoop]: Abstraction has has 178 places, 2291 transitions, 78450 flow [2021-08-13 08:33:57,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:57,291 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:33:57,291 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:33:57,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 08:33:57,291 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:33:57,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:33:57,291 INFO L82 PathProgramCache]: Analyzing trace with hash -2021933350, now seen corresponding path program 18 times [2021-08-13 08:33:57,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:33:57,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346913963] [2021-08-13 08:33:57,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:33:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:33:57,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:57,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:33:57,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:57,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:57,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:57,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:33:57,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:33:57,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:33:57,310 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 08:33:57,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:33:57,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346913963] [2021-08-13 08:33:57,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346913963] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:33:57,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:33:57,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 08:33:57,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466166143] [2021-08-13 08:33:57,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 08:33:57,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:33:57,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 08:33:57,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 08:33:57,311 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:33:57,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 2291 transitions, 78450 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:33:57,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:33:57,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:33:57,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:34:13,478 INFO L129 PetriNetUnfolder]: 29921/53123 cut-off events. [2021-08-13 08:34:13,478 INFO L130 PetriNetUnfolder]: For 1707209/1752144 co-relation queries the response was YES. [2021-08-13 08:34:13,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 666272 conditions, 53123 events. 29921/53123 cut-off events. For 1707209/1752144 co-relation queries the response was YES. Maximal size of possible extension queue 3782. Compared 535839 event pairs, 8275 based on Foata normal form. 815/51520 useless extension candidates. Maximal degree in co-relation 666207. Up to 33130 conditions per place. [2021-08-13 08:34:14,297 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 1332 selfloop transitions, 277 changer transitions 306/1947 dead transitions. [2021-08-13 08:34:14,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 1947 transitions, 70184 flow [2021-08-13 08:34:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:34:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:34:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-08-13 08:34:14,298 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-08-13 08:34:14,298 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-08-13 08:34:14,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-08-13 08:34:14,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:34:14,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-08-13 08:34:14,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:14,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:14,299 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:14,299 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 127 predicate places. [2021-08-13 08:34:14,299 INFO L482 AbstractCegarLoop]: Abstraction has has 182 places, 1947 transitions, 70184 flow [2021-08-13 08:34:14,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:14,299 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:34:14,299 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:34:14,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 08:34:14,299 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:34:14,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:34:14,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1687788848, now seen corresponding path program 19 times [2021-08-13 08:34:14,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:34:14,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349308898] [2021-08-13 08:34:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:34:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:34:14,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:14,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:34:14,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:14,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:14,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:14,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:14,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:14,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:14,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:14,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:14,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:14,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:34:14,336 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 08:34:14,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:34:14,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349308898] [2021-08-13 08:34:14,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349308898] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:34:14,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:34:14,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:34:14,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326592721] [2021-08-13 08:34:14,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:34:14,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:34:14,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:34:14,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:34:14,337 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:34:14,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 1947 transitions, 70184 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:14,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:34:14,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:34:14,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:34:28,391 INFO L129 PetriNetUnfolder]: 26972/49465 cut-off events. [2021-08-13 08:34:28,391 INFO L130 PetriNetUnfolder]: For 1809456/1855652 co-relation queries the response was YES. [2021-08-13 08:34:28,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 654834 conditions, 49465 events. 26972/49465 cut-off events. For 1809456/1855652 co-relation queries the response was YES. Maximal size of possible extension queue 3473. Compared 512530 event pairs, 7568 based on Foata normal form. 2348/49785 useless extension candidates. Maximal degree in co-relation 654767. Up to 30866 conditions per place. [2021-08-13 08:34:29,150 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 993 selfloop transitions, 739 changer transitions 551/2315 dead transitions. [2021-08-13 08:34:29,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 2315 transitions, 88170 flow [2021-08-13 08:34:29,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 08:34:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 08:34:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 321 transitions. [2021-08-13 08:34:29,152 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8722826086956522 [2021-08-13 08:34:29,152 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 321 transitions. [2021-08-13 08:34:29,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 321 transitions. [2021-08-13 08:34:29,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:34:29,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 321 transitions. [2021-08-13 08:34:29,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.125) internal successors, (321), 8 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:29,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:29,153 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:29,153 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 134 predicate places. [2021-08-13 08:34:29,153 INFO L482 AbstractCegarLoop]: Abstraction has has 189 places, 2315 transitions, 88170 flow [2021-08-13 08:34:29,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:29,153 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:34:29,153 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:34:29,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 08:34:29,153 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:34:29,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:34:29,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1182594008, now seen corresponding path program 20 times [2021-08-13 08:34:29,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:34:29,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079108931] [2021-08-13 08:34:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:34:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:34:29,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:29,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:34:29,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:29,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:29,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:29,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:29,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:29,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:29,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:29,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:29,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:29,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:34:29,185 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 08:34:29,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:34:29,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079108931] [2021-08-13 08:34:29,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079108931] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:34:29,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:34:29,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:34:29,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036003129] [2021-08-13 08:34:29,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:34:29,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:34:29,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:34:29,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:34:29,186 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:34:29,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 2315 transitions, 88170 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:29,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:34:29,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:34:29,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:34:46,090 INFO L129 PetriNetUnfolder]: 25411/47568 cut-off events. [2021-08-13 08:34:46,090 INFO L130 PetriNetUnfolder]: For 1939249/1982525 co-relation queries the response was YES. [2021-08-13 08:34:46,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 661098 conditions, 47568 events. 25411/47568 cut-off events. For 1939249/1982525 co-relation queries the response was YES. Maximal size of possible extension queue 3278. Compared 500878 event pairs, 7220 based on Foata normal form. 1765/47421 useless extension candidates. Maximal degree in co-relation 661029. Up to 29651 conditions per place. [2021-08-13 08:34:46,725 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 1038 selfloop transitions, 792 changer transitions 719/2581 dead transitions. [2021-08-13 08:34:46,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 2581 transitions, 103516 flow [2021-08-13 08:34:46,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 08:34:46,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 08:34:46,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 321 transitions. [2021-08-13 08:34:46,726 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8722826086956522 [2021-08-13 08:34:46,726 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 321 transitions. [2021-08-13 08:34:46,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 321 transitions. [2021-08-13 08:34:46,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:34:46,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 321 transitions. [2021-08-13 08:34:46,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.125) internal successors, (321), 8 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:46,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:46,727 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:46,728 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 141 predicate places. [2021-08-13 08:34:46,728 INFO L482 AbstractCegarLoop]: Abstraction has has 196 places, 2581 transitions, 103516 flow [2021-08-13 08:34:46,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:46,728 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:34:46,728 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:34:46,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 08:34:46,728 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 08:34:46,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:34:46,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1829761756, now seen corresponding path program 21 times [2021-08-13 08:34:46,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:34:46,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354915439] [2021-08-13 08:34:46,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:34:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:34:46,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:46,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:34:46,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:46,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:46,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:46,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:46,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:46,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:46,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:46,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:46,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:46,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:46,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:46,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:34:46,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:46,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:46,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:46,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:34:46,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:34:46,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:34:46,771 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 08:34:46,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:34:46,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354915439] [2021-08-13 08:34:46,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354915439] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:34:46,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:34:46,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 08:34:46,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106151208] [2021-08-13 08:34:46,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 08:34:46,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:34:46,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 08:34:46,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-13 08:34:46,772 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 08:34:46,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 2581 transitions, 103516 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:34:46,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:34:46,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 08:34:46,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand