/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 09:45:59,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 09:45:59,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 09:45:59,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 09:46:00,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 09:46:00,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 09:46:00,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 09:46:00,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 09:46:00,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 09:46:00,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 09:46:00,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 09:46:00,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 09:46:00,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 09:46:00,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 09:46:00,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 09:46:00,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 09:46:00,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 09:46:00,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 09:46:00,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 09:46:00,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 09:46:00,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 09:46:00,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 09:46:00,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 09:46:00,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 09:46:00,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 09:46:00,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 09:46:00,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 09:46:00,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 09:46:00,040 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.epf [2021-06-13 09:46:00,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 09:46:00,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 09:46:00,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 09:46:00,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 09:46:00,077 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 09:46:00,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 09:46:00,077 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 09:46:00,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 09:46:00,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 09:46:00,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 09:46:00,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 09:46:00,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 09:46:00,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 09:46:00,079 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 09:46:00,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 09:46:00,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 09:46:00,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 09:46:00,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 09:46:00,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 09:46:00,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 09:46:00,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 09:46:00,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 09:46:00,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 09:46:00,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 09:46:00,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 09:46:00,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 09:46:00,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 09:46:00,082 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 09:46:00,082 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 09:46:00,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 09:46:00,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 09:46:00,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 09:46:00,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 09:46:00,411 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 09:46:00,412 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 09:46:00,412 INFO L432 ainManager$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 [2021-06-13 09:46:00,413 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-06-13 09:46:00,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 09:46:00,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 09:46:00,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 09:46:00,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 09:46:00,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 09:46:00,467 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 13.06 09:46:00" (1/1) ... [2021-06-13 09:46:00,474 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 13.06 09:46:00" (1/1) ... [2021-06-13 09:46:00,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 09:46:00,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 09:46:00,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 09:46:00,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 09:46:00,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:46:00" (1/1) ... [2021-06-13 09:46:00,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:46:00" (1/1) ... [2021-06-13 09:46:00,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:46:00" (1/1) ... [2021-06-13 09:46:00,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:46:00" (1/1) ... [2021-06-13 09:46:00,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:46:00" (1/1) ... [2021-06-13 09:46:00,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:46:00" (1/1) ... [2021-06-13 09:46:00,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:46:00" (1/1) ... [2021-06-13 09:46:00,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 09:46:00,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 09:46:00,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 09:46:00,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 09:46:00,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:46:00" (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 [2021-06-13 09:46:00,576 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 09:46:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 09:46:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 09:46:00,579 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 09:46:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 09:46:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 09:46:00,579 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 09:46:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 09:46:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 09:46:00,579 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-13 09:46:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-13 09:46:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-13 09:46:00,580 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-13 09:46:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-13 09:46:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-13 09:46:00,580 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-13 09:46:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-13 09:46:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-13 09:46:00,582 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 09:46:00,803 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 09:46:00,803 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 09:46:00,805 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:46:00 BoogieIcfgContainer [2021-06-13 09:46:00,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 09:46:00,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 09:46:00,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 09:46:00,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 09:46:00,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:46:00" (1/2) ... [2021-06-13 09:46:00,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f99ac3b and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 09:46:00, skipping insertion in model container [2021-06-13 09:46:00,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:46:00" (2/2) ... [2021-06-13 09:46:00,811 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-06-13 09:46:00,815 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 09:46:00,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 09:46:00,816 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 09:46:00,918 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-06-13 09:46:00,934 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-13 09:46:00,951 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 09:46:00,951 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 09:46:00,951 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 09:46:00,951 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 09:46:00,951 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 09:46:00,951 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 09:46:00,951 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 09:46:00,952 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 09:46:00,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 46 transitions, 132 flow [2021-06-13 09:46:00,992 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-06-13 09:46:00,992 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-13 09:46:00,994 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. [2021-06-13 09:46:00,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 46 transitions, 132 flow [2021-06-13 09:46:00,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 39 transitions, 108 flow [2021-06-13 09:46:01,023 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-06-13 09:46:01,023 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-13 09:46:01,023 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:01,024 INFO L255 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] [2021-06-13 09:46:01,024 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:01,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:01,029 INFO L82 PathProgramCache]: Analyzing trace with hash 845413524, now seen corresponding path program 1 times [2021-06-13 09:46:01,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:01,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567124981] [2021-06-13 09:46:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:01,225 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-06-13 09:46:01,226 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-06-13 09:46:01,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:01,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:01,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-13 09:46:01,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:01,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:01,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-13 09:46:01,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:01,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:01,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567124981] [2021-06-13 09:46:01,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567124981] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:01,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:01,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 09:46:01,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141957680] [2021-06-13 09:46:01,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:46:01,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:01,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:46:01,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:46:01,316 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 46 [2021-06-13 09:46:01,319 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) [2021-06-13 09:46:01,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:01,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 46 [2021-06-13 09:46:01,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:01,681 INFO L129 PetriNetUnfolder]: 1023/2303 cut-off events. [2021-06-13 09:46:01,682 INFO L130 PetriNetUnfolder]: For 172/172 co-relation queries the response was YES. [2021-06-13 09:46:01,695 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 18571 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. [2021-06-13 09:46:01,710 INFO L132 encePairwiseOnDemand]: 33/46 looper letters, 23 selfloop transitions, 11 changer transitions 1/61 dead transitions. [2021-06-13 09:46:01,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 222 flow [2021-06-13 09:46:01,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:46:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:46:01,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 196 transitions. [2021-06-13 09:46:01,722 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8521739130434782 [2021-06-13 09:46:01,722 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 196 transitions. [2021-06-13 09:46:01,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 196 transitions. [2021-06-13 09:46:01,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:01,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 196 transitions. [2021-06-13 09:46:01,731 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) [2021-06-13 09:46:01,737 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) [2021-06-13 09:46:01,738 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) [2021-06-13 09:46:01,739 INFO L185 Difference]: Start difference. First operand has 55 places, 39 transitions, 108 flow. Second operand 5 states and 196 transitions. [2021-06-13 09:46:01,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 222 flow [2021-06-13 09:46:01,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 202 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-06-13 09:46:01,761 INFO L241 Difference]: Finished difference. Result has 52 places, 48 transitions, 167 flow [2021-06-13 09:46:01,763 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2021-06-13 09:46:01,764 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, -3 predicate places. [2021-06-13 09:46:01,764 INFO L482 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 167 flow [2021-06-13 09:46:01,764 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) [2021-06-13 09:46:01,764 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:01,765 INFO L255 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] [2021-06-13 09:46:01,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 09:46:01,765 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:01,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:01,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1667294424, now seen corresponding path program 2 times [2021-06-13 09:46:01,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:01,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87955540] [2021-06-13 09:46:01,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:01,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:01,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:01,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:01,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:01,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:01,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:01,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:01,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:01,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:01,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:01,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87955540] [2021-06-13 09:46:01,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87955540] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:01,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:01,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:46:01,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782158748] [2021-06-13 09:46:01,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:46:01,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:01,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:46:01,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:46:01,906 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:01,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 167 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) [2021-06-13 09:46:01,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:01,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:01,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:03,555 INFO L129 PetriNetUnfolder]: 9709/16149 cut-off events. [2021-06-13 09:46:03,556 INFO L130 PetriNetUnfolder]: For 2093/2226 co-relation queries the response was YES. [2021-06-13 09:46:03,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35159 conditions, 16149 events. 9709/16149 cut-off events. For 2093/2226 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 131621 event pairs, 2417 based on Foata normal form. 26/14810 useless extension candidates. Maximal degree in co-relation 34965. Up to 4545 conditions per place. [2021-06-13 09:46:03,763 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 43 selfloop transitions, 46 changer transitions 0/116 dead transitions. [2021-06-13 09:46:03,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 116 transitions, 521 flow [2021-06-13 09:46:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 09:46:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 09:46:03,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 322 transitions. [2021-06-13 09:46:03,768 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-06-13 09:46:03,769 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 322 transitions. [2021-06-13 09:46:03,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 322 transitions. [2021-06-13 09:46:03,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:03,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 322 transitions. [2021-06-13 09:46:03,771 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) [2021-06-13 09:46:03,773 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) [2021-06-13 09:46:03,774 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) [2021-06-13 09:46:03,774 INFO L185 Difference]: Start difference. First operand has 52 places, 48 transitions, 167 flow. Second operand 8 states and 322 transitions. [2021-06-13 09:46:03,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 116 transitions, 521 flow [2021-06-13 09:46:03,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 116 transitions, 502 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-06-13 09:46:03,784 INFO L241 Difference]: Finished difference. Result has 57 places, 92 transitions, 403 flow [2021-06-13 09:46:03,784 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=403, PETRI_PLACES=57, PETRI_TRANSITIONS=92} [2021-06-13 09:46:03,785 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2021-06-13 09:46:03,785 INFO L482 AbstractCegarLoop]: Abstraction has has 57 places, 92 transitions, 403 flow [2021-06-13 09:46:03,785 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) [2021-06-13 09:46:03,785 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:03,785 INFO L255 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] [2021-06-13 09:46:03,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 09:46:03,786 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:03,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:03,789 INFO L82 PathProgramCache]: Analyzing trace with hash 837790964, now seen corresponding path program 3 times [2021-06-13 09:46:03,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:03,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774902747] [2021-06-13 09:46:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:03,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:03,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:03,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:03,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:03,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:03,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:03,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:03,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:03,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:03,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774902747] [2021-06-13 09:46:03,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774902747] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:03,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:03,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 09:46:03,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943326671] [2021-06-13 09:46:03,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:46:03,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:03,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:46:03,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:46:03,867 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:03,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 92 transitions, 403 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) [2021-06-13 09:46:03,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:03,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:03,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:05,391 INFO L129 PetriNetUnfolder]: 9255/17039 cut-off events. [2021-06-13 09:46:05,391 INFO L130 PetriNetUnfolder]: For 7389/8401 co-relation queries the response was YES. [2021-06-13 09:46:05,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42852 conditions, 17039 events. 9255/17039 cut-off events. For 7389/8401 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 154084 event pairs, 2269 based on Foata normal form. 313/16410 useless extension candidates. Maximal degree in co-relation 42168. Up to 9967 conditions per place. [2021-06-13 09:46:05,573 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 87 selfloop transitions, 47 changer transitions 0/161 dead transitions. [2021-06-13 09:46:05,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 161 transitions, 991 flow [2021-06-13 09:46:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:46:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:46:05,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-06-13 09:46:05,576 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-06-13 09:46:05,576 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-06-13 09:46:05,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-06-13 09:46:05,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:05,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-06-13 09:46:05,577 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) [2021-06-13 09:46:05,578 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) [2021-06-13 09:46:05,578 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) [2021-06-13 09:46:05,578 INFO L185 Difference]: Start difference. First operand has 57 places, 92 transitions, 403 flow. Second operand 5 states and 194 transitions. [2021-06-13 09:46:05,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 161 transitions, 991 flow [2021-06-13 09:46:05,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 161 transitions, 875 flow, removed 52 selfloop flow, removed 2 redundant places. [2021-06-13 09:46:05,621 INFO L241 Difference]: Finished difference. Result has 61 places, 128 transitions, 678 flow [2021-06-13 09:46:05,622 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=678, PETRI_PLACES=61, PETRI_TRANSITIONS=128} [2021-06-13 09:46:05,622 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2021-06-13 09:46:05,622 INFO L482 AbstractCegarLoop]: Abstraction has has 61 places, 128 transitions, 678 flow [2021-06-13 09:46:05,622 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) [2021-06-13 09:46:05,623 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:05,623 INFO L255 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] [2021-06-13 09:46:05,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 09:46:05,623 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:05,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:05,624 INFO L82 PathProgramCache]: Analyzing trace with hash 949031540, now seen corresponding path program 4 times [2021-06-13 09:46:05,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:05,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838080193] [2021-06-13 09:46:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:05,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:05,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:05,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:05,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:05,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:05,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:05,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:05,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:05,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:05,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:05,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:05,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:05,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:05,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838080193] [2021-06-13 09:46:05,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838080193] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:05,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:05,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 09:46:05,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988518342] [2021-06-13 09:46:05,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 09:46:05,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:05,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 09:46:05,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-13 09:46:05,790 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:05,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 128 transitions, 678 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) [2021-06-13 09:46:05,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:05,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:05,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:07,810 INFO L129 PetriNetUnfolder]: 12497/21423 cut-off events. [2021-06-13 09:46:07,810 INFO L130 PetriNetUnfolder]: For 17606/18780 co-relation queries the response was YES. [2021-06-13 09:46:07,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60037 conditions, 21423 events. 12497/21423 cut-off events. For 17606/18780 co-relation queries the response was YES. Maximal size of possible extension queue 1557. Compared 187094 event pairs, 2826 based on Foata normal form. 634/20442 useless extension candidates. Maximal degree in co-relation 59675. Up to 5674 conditions per place. [2021-06-13 09:46:08,166 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 62 selfloop transitions, 108 changer transitions 0/197 dead transitions. [2021-06-13 09:46:08,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 197 transitions, 1347 flow [2021-06-13 09:46:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 09:46:08,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 09:46:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 282 transitions. [2021-06-13 09:46:08,169 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8757763975155279 [2021-06-13 09:46:08,169 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 282 transitions. [2021-06-13 09:46:08,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 282 transitions. [2021-06-13 09:46:08,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:08,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 282 transitions. [2021-06-13 09:46:08,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.285714285714285) internal successors, (282), 7 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:08,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:08,172 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:08,172 INFO L185 Difference]: Start difference. First operand has 61 places, 128 transitions, 678 flow. Second operand 7 states and 282 transitions. [2021-06-13 09:46:08,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 197 transitions, 1347 flow [2021-06-13 09:46:08,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 197 transitions, 1341 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 09:46:08,189 INFO L241 Difference]: Finished difference. Result has 69 places, 174 transitions, 1339 flow [2021-06-13 09:46:08,189 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1339, PETRI_PLACES=69, PETRI_TRANSITIONS=174} [2021-06-13 09:46:08,189 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2021-06-13 09:46:08,190 INFO L482 AbstractCegarLoop]: Abstraction has has 69 places, 174 transitions, 1339 flow [2021-06-13 09:46:08,190 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) [2021-06-13 09:46:08,190 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:08,190 INFO L255 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] [2021-06-13 09:46:08,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 09:46:08,190 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:08,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:08,191 INFO L82 PathProgramCache]: Analyzing trace with hash 526310698, now seen corresponding path program 5 times [2021-06-13 09:46:08,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:08,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826355245] [2021-06-13 09:46:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:08,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:08,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:08,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:08,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:08,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:08,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:08,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:08,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:08,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:08,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826355245] [2021-06-13 09:46:08,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826355245] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:08,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:08,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 09:46:08,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815426627] [2021-06-13 09:46:08,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:46:08,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:08,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:46:08,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:46:08,246 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:08,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 174 transitions, 1339 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) [2021-06-13 09:46:08,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:08,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:08,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:09,805 INFO L129 PetriNetUnfolder]: 11069/20359 cut-off events. [2021-06-13 09:46:09,805 INFO L130 PetriNetUnfolder]: For 38825/41989 co-relation queries the response was YES. [2021-06-13 09:46:09,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67645 conditions, 20359 events. 11069/20359 cut-off events. For 38825/41989 co-relation queries the response was YES. Maximal size of possible extension queue 1522. Compared 189282 event pairs, 2749 based on Foata normal form. 1134/20289 useless extension candidates. Maximal degree in co-relation 66929. Up to 12153 conditions per place. [2021-06-13 09:46:10,048 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 126 selfloop transitions, 70 changer transitions 0/223 dead transitions. [2021-06-13 09:46:10,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 223 transitions, 2083 flow [2021-06-13 09:46:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:46:10,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:46:10,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-06-13 09:46:10,049 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-06-13 09:46:10,052 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-06-13 09:46:10,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-06-13 09:46:10,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:10,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-06-13 09:46:10,053 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) [2021-06-13 09:46:10,053 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) [2021-06-13 09:46:10,054 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) [2021-06-13 09:46:10,054 INFO L185 Difference]: Start difference. First operand has 69 places, 174 transitions, 1339 flow. Second operand 5 states and 194 transitions. [2021-06-13 09:46:10,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 223 transitions, 2083 flow [2021-06-13 09:46:10,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 223 transitions, 2059 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-06-13 09:46:10,186 INFO L241 Difference]: Finished difference. Result has 73 places, 193 transitions, 1723 flow [2021-06-13 09:46:10,186 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1723, PETRI_PLACES=73, PETRI_TRANSITIONS=193} [2021-06-13 09:46:10,186 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2021-06-13 09:46:10,186 INFO L482 AbstractCegarLoop]: Abstraction has has 73 places, 193 transitions, 1723 flow [2021-06-13 09:46:10,187 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) [2021-06-13 09:46:10,187 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:10,187 INFO L255 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] [2021-06-13 09:46:10,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 09:46:10,187 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:10,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:10,188 INFO L82 PathProgramCache]: Analyzing trace with hash 566858244, now seen corresponding path program 6 times [2021-06-13 09:46:10,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:10,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805589368] [2021-06-13 09:46:10,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:10,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:10,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:10,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:10,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:10,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:10,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:10,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:10,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:10,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:10,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:10,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:10,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:10,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:10,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:10,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:10,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:10,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:10,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805589368] [2021-06-13 09:46:10,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805589368] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:10,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:10,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 09:46:10,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644046998] [2021-06-13 09:46:10,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 09:46:10,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:10,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 09:46:10,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-13 09:46:10,268 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:10,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 193 transitions, 1723 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) [2021-06-13 09:46:10,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:10,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:10,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:12,047 INFO L129 PetriNetUnfolder]: 12352/21492 cut-off events. [2021-06-13 09:46:12,047 INFO L130 PetriNetUnfolder]: For 56868/60750 co-relation queries the response was YES. [2021-06-13 09:46:12,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75923 conditions, 21492 events. 12352/21492 cut-off events. For 56868/60750 co-relation queries the response was YES. Maximal size of possible extension queue 1532. Compared 189799 event pairs, 2447 based on Foata normal form. 1730/21807 useless extension candidates. Maximal degree in co-relation 75542. Up to 5124 conditions per place. [2021-06-13 09:46:12,532 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 55 selfloop transitions, 175 changer transitions 0/257 dead transitions. [2021-06-13 09:46:12,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 257 transitions, 2648 flow [2021-06-13 09:46:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 09:46:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 09:46:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2021-06-13 09:46:12,534 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8717391304347826 [2021-06-13 09:46:12,534 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 401 transitions. [2021-06-13 09:46:12,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 401 transitions. [2021-06-13 09:46:12,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:12,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 401 transitions. [2021-06-13 09:46:12,535 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) [2021-06-13 09:46:12,536 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) [2021-06-13 09:46:12,537 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) [2021-06-13 09:46:12,537 INFO L185 Difference]: Start difference. First operand has 73 places, 193 transitions, 1723 flow. Second operand 10 states and 401 transitions. [2021-06-13 09:46:12,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 257 transitions, 2648 flow [2021-06-13 09:46:12,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 257 transitions, 2561 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 09:46:12,578 INFO L241 Difference]: Finished difference. Result has 82 places, 221 transitions, 2363 flow [2021-06-13 09:46:12,579 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2363, PETRI_PLACES=82, PETRI_TRANSITIONS=221} [2021-06-13 09:46:12,579 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2021-06-13 09:46:12,579 INFO L482 AbstractCegarLoop]: Abstraction has has 82 places, 221 transitions, 2363 flow [2021-06-13 09:46:12,579 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) [2021-06-13 09:46:12,579 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:12,579 INFO L255 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] [2021-06-13 09:46:12,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 09:46:12,579 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:12,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:12,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2029737788, now seen corresponding path program 7 times [2021-06-13 09:46:12,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:12,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220957720] [2021-06-13 09:46:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:12,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:12,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:12,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:12,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:12,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:12,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:12,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:12,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:12,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:12,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:12,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:12,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:12,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:12,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:12,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:12,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220957720] [2021-06-13 09:46:12,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220957720] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:12,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:12,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 09:46:12,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335821252] [2021-06-13 09:46:12,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 09:46:12,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:12,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 09:46:12,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-13 09:46:12,653 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:12,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 221 transitions, 2363 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) [2021-06-13 09:46:12,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:12,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:12,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:14,737 INFO L129 PetriNetUnfolder]: 13334/23008 cut-off events. [2021-06-13 09:46:14,737 INFO L130 PetriNetUnfolder]: For 95845/99572 co-relation queries the response was YES. [2021-06-13 09:46:14,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90438 conditions, 23008 events. 13334/23008 cut-off events. For 95845/99572 co-relation queries the response was YES. Maximal size of possible extension queue 1619. Compared 202524 event pairs, 2746 based on Foata normal form. 1406/22729 useless extension candidates. Maximal degree in co-relation 90081. Up to 5716 conditions per place. [2021-06-13 09:46:14,903 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 67 selfloop transitions, 185 changer transitions 0/279 dead transitions. [2021-06-13 09:46:14,903 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 279 transitions, 3406 flow [2021-06-13 09:46:14,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 09:46:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 09:46:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 282 transitions. [2021-06-13 09:46:14,904 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8757763975155279 [2021-06-13 09:46:14,904 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 282 transitions. [2021-06-13 09:46:14,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 282 transitions. [2021-06-13 09:46:14,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:14,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 282 transitions. [2021-06-13 09:46:14,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.285714285714285) internal successors, (282), 7 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:14,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:14,906 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:14,906 INFO L185 Difference]: Start difference. First operand has 82 places, 221 transitions, 2363 flow. Second operand 7 states and 282 transitions. [2021-06-13 09:46:14,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 279 transitions, 3406 flow [2021-06-13 09:46:14,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 279 transitions, 3080 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-06-13 09:46:14,971 INFO L241 Difference]: Finished difference. Result has 84 places, 251 transitions, 2870 flow [2021-06-13 09:46:14,971 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2870, PETRI_PLACES=84, PETRI_TRANSITIONS=251} [2021-06-13 09:46:14,971 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2021-06-13 09:46:14,971 INFO L482 AbstractCegarLoop]: Abstraction has has 84 places, 251 transitions, 2870 flow [2021-06-13 09:46:14,972 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) [2021-06-13 09:46:14,972 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:14,972 INFO L255 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] [2021-06-13 09:46:14,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 09:46:14,972 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:14,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:14,972 INFO L82 PathProgramCache]: Analyzing trace with hash -436867906, now seen corresponding path program 8 times [2021-06-13 09:46:14,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:14,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710185938] [2021-06-13 09:46:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:15,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:15,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:15,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:15,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:15,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:15,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:15,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:15,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:15,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:15,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710185938] [2021-06-13 09:46:15,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710185938] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:15,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:15,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 09:46:15,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607315782] [2021-06-13 09:46:15,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:46:15,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:15,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:46:15,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:46:15,013 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:15,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 251 transitions, 2870 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) [2021-06-13 09:46:15,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:15,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:15,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:16,733 INFO L129 PetriNetUnfolder]: 11446/20717 cut-off events. [2021-06-13 09:46:16,733 INFO L130 PetriNetUnfolder]: For 82374/86107 co-relation queries the response was YES. [2021-06-13 09:46:16,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81217 conditions, 20717 events. 11446/20717 cut-off events. For 82374/86107 co-relation queries the response was YES. Maximal size of possible extension queue 1527. Compared 189064 event pairs, 3268 based on Foata normal form. 1044/20475 useless extension candidates. Maximal degree in co-relation 80682. Up to 12400 conditions per place. [2021-06-13 09:46:16,888 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 145 selfloop transitions, 154 changer transitions 0/326 dead transitions. [2021-06-13 09:46:16,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 326 transitions, 4414 flow [2021-06-13 09:46:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:46:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:46:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-06-13 09:46:16,891 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-06-13 09:46:16,891 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-06-13 09:46:16,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-06-13 09:46:16,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:16,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-06-13 09:46:16,892 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) [2021-06-13 09:46:16,892 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) [2021-06-13 09:46:16,892 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) [2021-06-13 09:46:16,892 INFO L185 Difference]: Start difference. First operand has 84 places, 251 transitions, 2870 flow. Second operand 5 states and 194 transitions. [2021-06-13 09:46:16,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 326 transitions, 4414 flow [2021-06-13 09:46:17,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 326 transitions, 4083 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-06-13 09:46:17,005 INFO L241 Difference]: Finished difference. Result has 85 places, 299 transitions, 3763 flow [2021-06-13 09:46:17,006 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3763, PETRI_PLACES=85, PETRI_TRANSITIONS=299} [2021-06-13 09:46:17,006 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 30 predicate places. [2021-06-13 09:46:17,006 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 299 transitions, 3763 flow [2021-06-13 09:46:17,006 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) [2021-06-13 09:46:17,006 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:17,007 INFO L255 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] [2021-06-13 09:46:17,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 09:46:17,007 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:17,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:17,007 INFO L82 PathProgramCache]: Analyzing trace with hash -190207128, now seen corresponding path program 9 times [2021-06-13 09:46:17,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:17,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981743801] [2021-06-13 09:46:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:17,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:17,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:17,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:17,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:17,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:17,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:17,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:17,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:17,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:17,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:17,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:17,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:17,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:17,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:17,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:17,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981743801] [2021-06-13 09:46:17,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981743801] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:17,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:17,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:46:17,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442526106] [2021-06-13 09:46:17,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:46:17,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:17,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:46:17,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:46:17,054 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:17,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 299 transitions, 3763 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) [2021-06-13 09:46:17,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:17,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:17,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:19,143 INFO L129 PetriNetUnfolder]: 12682/22474 cut-off events. [2021-06-13 09:46:19,143 INFO L130 PetriNetUnfolder]: For 90769/94415 co-relation queries the response was YES. [2021-06-13 09:46:19,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86283 conditions, 22474 events. 12682/22474 cut-off events. For 90769/94415 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 202985 event pairs, 2501 based on Foata normal form. 1859/22835 useless extension candidates. Maximal degree in co-relation 85935. Up to 5126 conditions per place. [2021-06-13 09:46:19,373 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 81 selfloop transitions, 277 changer transitions 0/385 dead transitions. [2021-06-13 09:46:19,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 385 transitions, 5335 flow [2021-06-13 09:46:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:46:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:46:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-06-13 09:46:19,375 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-06-13 09:46:19,375 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-06-13 09:46:19,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-06-13 09:46:19,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:19,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-06-13 09:46:19,377 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) [2021-06-13 09:46:19,378 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) [2021-06-13 09:46:19,378 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) [2021-06-13 09:46:19,378 INFO L185 Difference]: Start difference. First operand has 85 places, 299 transitions, 3763 flow. Second operand 9 states and 365 transitions. [2021-06-13 09:46:19,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 385 transitions, 5335 flow [2021-06-13 09:46:19,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 385 transitions, 5161 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 09:46:19,486 INFO L241 Difference]: Finished difference. Result has 93 places, 344 transitions, 4879 flow [2021-06-13 09:46:19,486 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3612, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4879, PETRI_PLACES=93, PETRI_TRANSITIONS=344} [2021-06-13 09:46:19,487 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2021-06-13 09:46:19,487 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 344 transitions, 4879 flow [2021-06-13 09:46:19,487 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) [2021-06-13 09:46:19,487 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:19,487 INFO L255 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] [2021-06-13 09:46:19,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 09:46:19,487 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:19,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:19,488 INFO L82 PathProgramCache]: Analyzing trace with hash -852312770, now seen corresponding path program 10 times [2021-06-13 09:46:19,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:19,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597751881] [2021-06-13 09:46:19,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:19,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:19,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:19,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:19,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:19,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:19,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:19,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:19,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:19,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:19,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:19,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:19,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:19,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:19,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:19,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:19,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597751881] [2021-06-13 09:46:19,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597751881] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:19,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:19,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:46:19,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867681872] [2021-06-13 09:46:19,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:46:19,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:19,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:46:19,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:46:19,533 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:19,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 344 transitions, 4879 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) [2021-06-13 09:46:19,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:19,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:19,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:21,848 INFO L129 PetriNetUnfolder]: 13304/23822 cut-off events. [2021-06-13 09:46:21,848 INFO L130 PetriNetUnfolder]: For 137191/141749 co-relation queries the response was YES. [2021-06-13 09:46:21,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100315 conditions, 23822 events. 13304/23822 cut-off events. For 137191/141749 co-relation queries the response was YES. Maximal size of possible extension queue 1738. Compared 219614 event pairs, 2525 based on Foata normal form. 1797/24051 useless extension candidates. Maximal degree in co-relation 99949. Up to 5446 conditions per place. [2021-06-13 09:46:22,246 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 81 selfloop transitions, 302 changer transitions 0/410 dead transitions. [2021-06-13 09:46:22,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 410 transitions, 6222 flow [2021-06-13 09:46:22,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:46:22,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:46:22,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-06-13 09:46:22,248 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-06-13 09:46:22,248 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-06-13 09:46:22,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-06-13 09:46:22,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:22,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-06-13 09:46:22,250 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) [2021-06-13 09:46:22,251 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) [2021-06-13 09:46:22,251 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) [2021-06-13 09:46:22,251 INFO L185 Difference]: Start difference. First operand has 93 places, 344 transitions, 4879 flow. Second operand 9 states and 365 transitions. [2021-06-13 09:46:22,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 410 transitions, 6222 flow [2021-06-13 09:46:22,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 410 transitions, 5594 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-13 09:46:22,417 INFO L241 Difference]: Finished difference. Result has 97 places, 369 transitions, 5322 flow [2021-06-13 09:46:22,417 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4315, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5322, PETRI_PLACES=97, PETRI_TRANSITIONS=369} [2021-06-13 09:46:22,417 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 42 predicate places. [2021-06-13 09:46:22,417 INFO L482 AbstractCegarLoop]: Abstraction has has 97 places, 369 transitions, 5322 flow [2021-06-13 09:46:22,417 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) [2021-06-13 09:46:22,418 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:22,418 INFO L255 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] [2021-06-13 09:46:22,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 09:46:22,418 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:22,418 INFO L82 PathProgramCache]: Analyzing trace with hash 913311396, now seen corresponding path program 11 times [2021-06-13 09:46:22,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:22,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711280913] [2021-06-13 09:46:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:22,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:22,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:22,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:22,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:22,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:22,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:22,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:22,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:22,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:22,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:22,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:22,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:22,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:22,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:22,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:22,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:22,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:22,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:22,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:22,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711280913] [2021-06-13 09:46:22,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711280913] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:22,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:22,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 09:46:22,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093278399] [2021-06-13 09:46:22,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 09:46:22,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:22,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 09:46:22,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-13 09:46:22,482 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:22,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 369 transitions, 5322 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) [2021-06-13 09:46:22,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:22,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:22,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:24,989 INFO L129 PetriNetUnfolder]: 13299/23916 cut-off events. [2021-06-13 09:46:24,990 INFO L130 PetriNetUnfolder]: For 145168/149791 co-relation queries the response was YES. [2021-06-13 09:46:25,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103167 conditions, 23916 events. 13299/23916 cut-off events. For 145168/149791 co-relation queries the response was YES. Maximal size of possible extension queue 1832. Compared 222721 event pairs, 2380 based on Foata normal form. 1663/24024 useless extension candidates. Maximal degree in co-relation 102771. Up to 5424 conditions per place. [2021-06-13 09:46:25,201 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 71 selfloop transitions, 337 changer transitions 0/435 dead transitions. [2021-06-13 09:46:25,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 435 transitions, 6568 flow [2021-06-13 09:46:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 09:46:25,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 09:46:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 520 transitions. [2021-06-13 09:46:25,203 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-06-13 09:46:25,204 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 520 transitions. [2021-06-13 09:46:25,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 520 transitions. [2021-06-13 09:46:25,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:25,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 520 transitions. [2021-06-13 09:46:25,205 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) [2021-06-13 09:46:25,206 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) [2021-06-13 09:46:25,206 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) [2021-06-13 09:46:25,206 INFO L185 Difference]: Start difference. First operand has 97 places, 369 transitions, 5322 flow. Second operand 13 states and 520 transitions. [2021-06-13 09:46:25,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 435 transitions, 6568 flow [2021-06-13 09:46:25,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 435 transitions, 6418 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-06-13 09:46:25,486 INFO L241 Difference]: Finished difference. Result has 107 places, 383 transitions, 6089 flow [2021-06-13 09:46:25,486 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5192, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=323, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6089, PETRI_PLACES=107, PETRI_TRANSITIONS=383} [2021-06-13 09:46:25,486 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2021-06-13 09:46:25,486 INFO L482 AbstractCegarLoop]: Abstraction has has 107 places, 383 transitions, 6089 flow [2021-06-13 09:46:25,486 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) [2021-06-13 09:46:25,486 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:25,486 INFO L255 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] [2021-06-13 09:46:25,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-13 09:46:25,487 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:25,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:25,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1959130236, now seen corresponding path program 12 times [2021-06-13 09:46:25,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:25,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298334355] [2021-06-13 09:46:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:25,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:25,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:25,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:25,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:25,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:25,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:25,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:25,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:25,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:25,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298334355] [2021-06-13 09:46:25,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298334355] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:25,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:25,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 09:46:25,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050370013] [2021-06-13 09:46:25,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:46:25,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:25,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:46:25,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:46:25,510 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:25,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 383 transitions, 6089 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) [2021-06-13 09:46:25,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:25,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:25,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:27,594 INFO L129 PetriNetUnfolder]: 11564/21582 cut-off events. [2021-06-13 09:46:27,594 INFO L130 PetriNetUnfolder]: For 136466/138608 co-relation queries the response was YES. [2021-06-13 09:46:27,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95396 conditions, 21582 events. 11564/21582 cut-off events. For 136466/138608 co-relation queries the response was YES. Maximal size of possible extension queue 1737. Compared 206241 event pairs, 3802 based on Foata normal form. 600/20942 useless extension candidates. Maximal degree in co-relation 94874. Up to 13119 conditions per place. [2021-06-13 09:46:27,772 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 210 selfloop transitions, 198 changer transitions 1/436 dead transitions. [2021-06-13 09:46:27,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 436 transitions, 7677 flow [2021-06-13 09:46:27,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:46:27,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:46:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-06-13 09:46:27,773 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-06-13 09:46:27,773 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-06-13 09:46:27,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-06-13 09:46:27,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:27,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-06-13 09:46:27,774 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) [2021-06-13 09:46:27,774 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) [2021-06-13 09:46:27,775 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) [2021-06-13 09:46:27,775 INFO L185 Difference]: Start difference. First operand has 107 places, 383 transitions, 6089 flow. Second operand 5 states and 194 transitions. [2021-06-13 09:46:27,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 436 transitions, 7677 flow [2021-06-13 09:46:28,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 436 transitions, 6913 flow, removed 4 selfloop flow, removed 9 redundant places. [2021-06-13 09:46:28,174 INFO L241 Difference]: Finished difference. Result has 104 places, 407 transitions, 6424 flow [2021-06-13 09:46:28,175 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5088, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6424, PETRI_PLACES=104, PETRI_TRANSITIONS=407} [2021-06-13 09:46:28,175 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 49 predicate places. [2021-06-13 09:46:28,175 INFO L482 AbstractCegarLoop]: Abstraction has has 104 places, 407 transitions, 6424 flow [2021-06-13 09:46:28,175 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) [2021-06-13 09:46:28,175 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:28,175 INFO L255 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] [2021-06-13 09:46:28,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-13 09:46:28,175 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:28,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:28,176 INFO L82 PathProgramCache]: Analyzing trace with hash 922096568, now seen corresponding path program 13 times [2021-06-13 09:46:28,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:28,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172525865] [2021-06-13 09:46:28,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:28,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:28,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:28,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:28,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:28,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:28,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:28,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:28,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:28,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:28,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:28,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:28,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:28,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:28,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:28,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:28,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:28,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172525865] [2021-06-13 09:46:28,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172525865] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:28,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:28,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:46:28,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237592668] [2021-06-13 09:46:28,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:46:28,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:28,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:46:28,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:46:28,236 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:28,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 407 transitions, 6424 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) [2021-06-13 09:46:28,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:28,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:28,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:30,315 INFO L129 PetriNetUnfolder]: 11950/21690 cut-off events. [2021-06-13 09:46:30,315 INFO L130 PetriNetUnfolder]: For 125121/130138 co-relation queries the response was YES. [2021-06-13 09:46:30,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91815 conditions, 21690 events. 11950/21690 cut-off events. For 125121/130138 co-relation queries the response was YES. Maximal size of possible extension queue 1726. Compared 201406 event pairs, 2394 based on Foata normal form. 1656/22000 useless extension candidates. Maximal degree in co-relation 91351. Up to 4960 conditions per place. [2021-06-13 09:46:30,632 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 43 selfloop transitions, 379 changer transitions 0/449 dead transitions. [2021-06-13 09:46:30,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 449 transitions, 7854 flow [2021-06-13 09:46:30,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 09:46:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 09:46:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 321 transitions. [2021-06-13 09:46:30,634 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8722826086956522 [2021-06-13 09:46:30,634 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 321 transitions. [2021-06-13 09:46:30,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 321 transitions. [2021-06-13 09:46:30,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:30,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 321 transitions. [2021-06-13 09:46:30,635 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) [2021-06-13 09:46:30,635 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) [2021-06-13 09:46:30,636 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) [2021-06-13 09:46:30,636 INFO L185 Difference]: Start difference. First operand has 104 places, 407 transitions, 6424 flow. Second operand 8 states and 321 transitions. [2021-06-13 09:46:30,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 449 transitions, 7854 flow [2021-06-13 09:46:30,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 449 transitions, 7642 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 09:46:30,877 INFO L241 Difference]: Finished difference. Result has 110 places, 425 transitions, 7409 flow [2021-06-13 09:46:30,877 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6230, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=361, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7409, PETRI_PLACES=110, PETRI_TRANSITIONS=425} [2021-06-13 09:46:30,877 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 55 predicate places. [2021-06-13 09:46:30,877 INFO L482 AbstractCegarLoop]: Abstraction has has 110 places, 425 transitions, 7409 flow [2021-06-13 09:46:30,877 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) [2021-06-13 09:46:30,878 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:30,878 INFO L255 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] [2021-06-13 09:46:30,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-13 09:46:30,878 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:30,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:30,878 INFO L82 PathProgramCache]: Analyzing trace with hash 690267204, now seen corresponding path program 14 times [2021-06-13 09:46:30,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:30,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701137616] [2021-06-13 09:46:30,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:30,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:30,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:30,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:30,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:30,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:30,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:30,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:30,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:30,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:30,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:30,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:30,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:30,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:30,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701137616] [2021-06-13 09:46:30,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701137616] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:30,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:30,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 09:46:30,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105388833] [2021-06-13 09:46:30,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 09:46:30,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:30,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 09:46:30,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-13 09:46:30,932 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:30,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 425 transitions, 7409 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) [2021-06-13 09:46:30,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:30,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:30,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:33,971 INFO L129 PetriNetUnfolder]: 15144/28328 cut-off events. [2021-06-13 09:46:33,971 INFO L130 PetriNetUnfolder]: For 203124/209288 co-relation queries the response was YES. [2021-06-13 09:46:34,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133738 conditions, 28328 events. 15144/28328 cut-off events. For 203124/209288 co-relation queries the response was YES. Maximal size of possible extension queue 2365. Compared 282651 event pairs, 3107 based on Foata normal form. 1879/28624 useless extension candidates. Maximal degree in co-relation 133140. Up to 8864 conditions per place. [2021-06-13 09:46:34,366 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 165 selfloop transitions, 404 changer transitions 0/596 dead transitions. [2021-06-13 09:46:34,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 596 transitions, 10780 flow [2021-06-13 09:46:34,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 09:46:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 09:46:34,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 320 transitions. [2021-06-13 09:46:34,367 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-06-13 09:46:34,367 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 320 transitions. [2021-06-13 09:46:34,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 320 transitions. [2021-06-13 09:46:34,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:34,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 320 transitions. [2021-06-13 09:46:34,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:34,375 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) [2021-06-13 09:46:34,375 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) [2021-06-13 09:46:34,375 INFO L185 Difference]: Start difference. First operand has 110 places, 425 transitions, 7409 flow. Second operand 8 states and 320 transitions. [2021-06-13 09:46:34,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 596 transitions, 10780 flow [2021-06-13 09:46:34,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 596 transitions, 10000 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-06-13 09:46:34,743 INFO L241 Difference]: Finished difference. Result has 116 places, 536 transitions, 9812 flow [2021-06-13 09:46:34,743 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6862, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9812, PETRI_PLACES=116, PETRI_TRANSITIONS=536} [2021-06-13 09:46:34,744 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2021-06-13 09:46:34,744 INFO L482 AbstractCegarLoop]: Abstraction has has 116 places, 536 transitions, 9812 flow [2021-06-13 09:46:34,744 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) [2021-06-13 09:46:34,744 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:34,744 INFO L255 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] [2021-06-13 09:46:34,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-13 09:46:34,744 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:34,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:34,744 INFO L82 PathProgramCache]: Analyzing trace with hash 124603606, now seen corresponding path program 15 times [2021-06-13 09:46:34,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:34,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799208577] [2021-06-13 09:46:34,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:34,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:34,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:34,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:34,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:34,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:34,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:34,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:34,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:34,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:34,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:34,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:34,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:34,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:34,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:34,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:34,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:34,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:34,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799208577] [2021-06-13 09:46:34,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799208577] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:34,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:34,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:46:34,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148518657] [2021-06-13 09:46:34,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 09:46:34,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:34,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 09:46:34,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-13 09:46:34,775 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:34,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 536 transitions, 9812 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) [2021-06-13 09:46:34,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:34,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:34,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:37,606 INFO L129 PetriNetUnfolder]: 11930/23170 cut-off events. [2021-06-13 09:46:37,606 INFO L130 PetriNetUnfolder]: For 190513/197941 co-relation queries the response was YES. [2021-06-13 09:46:37,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111963 conditions, 23170 events. 11930/23170 cut-off events. For 190513/197941 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 231013 event pairs, 2596 based on Foata normal form. 3013/24876 useless extension candidates. Maximal degree in co-relation 111252. Up to 8032 conditions per place. [2021-06-13 09:46:37,816 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 148 selfloop transitions, 411 changer transitions 2/588 dead transitions. [2021-06-13 09:46:37,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 588 transitions, 11339 flow [2021-06-13 09:46:37,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 09:46:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-13 09:46:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2021-06-13 09:46:37,817 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8586956521739131 [2021-06-13 09:46:37,817 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 237 transitions. [2021-06-13 09:46:37,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 237 transitions. [2021-06-13 09:46:37,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:37,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 237 transitions. [2021-06-13 09:46:37,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:37,818 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) [2021-06-13 09:46:37,819 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) [2021-06-13 09:46:37,819 INFO L185 Difference]: Start difference. First operand has 116 places, 536 transitions, 9812 flow. Second operand 6 states and 237 transitions. [2021-06-13 09:46:37,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 588 transitions, 11339 flow [2021-06-13 09:46:38,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 588 transitions, 11244 flow, removed 16 selfloop flow, removed 2 redundant places. [2021-06-13 09:46:38,141 INFO L241 Difference]: Finished difference. Result has 121 places, 547 transitions, 10786 flow [2021-06-13 09:46:38,141 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8208, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10786, PETRI_PLACES=121, PETRI_TRANSITIONS=547} [2021-06-13 09:46:38,142 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 66 predicate places. [2021-06-13 09:46:38,142 INFO L482 AbstractCegarLoop]: Abstraction has has 121 places, 547 transitions, 10786 flow [2021-06-13 09:46:38,142 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) [2021-06-13 09:46:38,142 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:38,142 INFO L255 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] [2021-06-13 09:46:38,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-13 09:46:38,142 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:38,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:38,143 INFO L82 PathProgramCache]: Analyzing trace with hash 525310296, now seen corresponding path program 16 times [2021-06-13 09:46:38,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:38,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299707207] [2021-06-13 09:46:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:38,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:38,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:38,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:38,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:38,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:38,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:38,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:38,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:38,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:38,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:38,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:38,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:38,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:38,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:38,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:38,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:38,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:38,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:38,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:38,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:38,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:38,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299707207] [2021-06-13 09:46:38,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299707207] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:38,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:38,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 09:46:38,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128248224] [2021-06-13 09:46:38,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 09:46:38,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:38,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 09:46:38,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-13 09:46:38,206 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:38,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 547 transitions, 10786 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) [2021-06-13 09:46:38,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:38,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:38,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:41,244 INFO L129 PetriNetUnfolder]: 11380/22737 cut-off events. [2021-06-13 09:46:41,245 INFO L130 PetriNetUnfolder]: For 223262/231066 co-relation queries the response was YES. [2021-06-13 09:46:41,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117144 conditions, 22737 events. 11380/22737 cut-off events. For 223262/231066 co-relation queries the response was YES. Maximal size of possible extension queue 1649. Compared 231969 event pairs, 2480 based on Foata normal form. 3080/24607 useless extension candidates. Maximal degree in co-relation 116391. Up to 7803 conditions per place. [2021-06-13 09:46:41,470 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 159 selfloop transitions, 491 changer transitions 2/679 dead transitions. [2021-06-13 09:46:41,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 679 transitions, 14255 flow [2021-06-13 09:46:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 09:46:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 09:46:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 320 transitions. [2021-06-13 09:46:41,472 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-06-13 09:46:41,472 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 320 transitions. [2021-06-13 09:46:41,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 320 transitions. [2021-06-13 09:46:41,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:41,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 320 transitions. [2021-06-13 09:46:41,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:41,473 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) [2021-06-13 09:46:41,474 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) [2021-06-13 09:46:41,474 INFO L185 Difference]: Start difference. First operand has 121 places, 547 transitions, 10786 flow. Second operand 8 states and 320 transitions. [2021-06-13 09:46:41,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 679 transitions, 14255 flow [2021-06-13 09:46:41,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 679 transitions, 13663 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-06-13 09:46:41,908 INFO L241 Difference]: Finished difference. Result has 127 places, 627 transitions, 13264 flow [2021-06-13 09:46:41,908 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10278, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=408, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13264, PETRI_PLACES=127, PETRI_TRANSITIONS=627} [2021-06-13 09:46:41,908 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 72 predicate places. [2021-06-13 09:46:41,908 INFO L482 AbstractCegarLoop]: Abstraction has has 127 places, 627 transitions, 13264 flow [2021-06-13 09:46:41,909 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) [2021-06-13 09:46:41,909 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:41,909 INFO L255 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] [2021-06-13 09:46:41,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-13 09:46:41,909 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:41,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:41,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1129384408, now seen corresponding path program 17 times [2021-06-13 09:46:41,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:41,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839203605] [2021-06-13 09:46:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:41,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:41,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:41,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:41,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:41,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:41,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:41,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:41,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:41,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:41,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:41,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:41,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:41,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:41,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:41,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:41,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:41,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:41,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839203605] [2021-06-13 09:46:41,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839203605] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:41,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:41,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:46:41,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587192149] [2021-06-13 09:46:41,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:46:41,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:41,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:46:41,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:46:41,947 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:41,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 627 transitions, 13264 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) [2021-06-13 09:46:41,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:41,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:41,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:44,848 INFO L129 PetriNetUnfolder]: 9925/20483 cut-off events. [2021-06-13 09:46:44,849 INFO L130 PetriNetUnfolder]: For 216033/220951 co-relation queries the response was YES. [2021-06-13 09:46:45,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110756 conditions, 20483 events. 9925/20483 cut-off events. For 216033/220951 co-relation queries the response was YES. Maximal size of possible extension queue 1368. Compared 210857 event pairs, 2145 based on Foata normal form. 2586/22036 useless extension candidates. Maximal degree in co-relation 110098. Up to 3941 conditions per place. [2021-06-13 09:46:45,235 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 101 selfloop transitions, 724 changer transitions 5/857 dead transitions. [2021-06-13 09:46:45,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 857 transitions, 19456 flow [2021-06-13 09:46:45,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:46:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:46:45,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-06-13 09:46:45,236 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-06-13 09:46:45,237 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-06-13 09:46:45,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-06-13 09:46:45,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:45,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-06-13 09:46:45,238 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) [2021-06-13 09:46:45,238 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) [2021-06-13 09:46:45,238 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) [2021-06-13 09:46:45,238 INFO L185 Difference]: Start difference. First operand has 127 places, 627 transitions, 13264 flow. Second operand 9 states and 365 transitions. [2021-06-13 09:46:45,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 857 transitions, 19456 flow [2021-06-13 09:46:45,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 857 transitions, 19196 flow, removed 22 selfloop flow, removed 3 redundant places. [2021-06-13 09:46:45,678 INFO L241 Difference]: Finished difference. Result has 135 places, 799 transitions, 18900 flow [2021-06-13 09:46:45,679 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13066, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=550, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18900, PETRI_PLACES=135, PETRI_TRANSITIONS=799} [2021-06-13 09:46:45,679 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2021-06-13 09:46:45,679 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 799 transitions, 18900 flow [2021-06-13 09:46:45,679 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) [2021-06-13 09:46:45,679 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:45,679 INFO L255 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] [2021-06-13 09:46:45,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-13 09:46:45,680 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:45,680 INFO L82 PathProgramCache]: Analyzing trace with hash 5357258, now seen corresponding path program 18 times [2021-06-13 09:46:45,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:45,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014697945] [2021-06-13 09:46:45,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:45,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:45,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:45,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:45,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:45,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:45,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:45,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:45,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:45,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:45,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:45,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:45,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:45,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:45,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:45,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:45,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:45,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:45,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:45,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:45,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:45,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:45,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014697945] [2021-06-13 09:46:45,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014697945] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:45,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:45,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 09:46:45,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38231545] [2021-06-13 09:46:45,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 09:46:45,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:45,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 09:46:45,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-13 09:46:45,731 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:45,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 799 transitions, 18900 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) [2021-06-13 09:46:45,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:45,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:45,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:49,153 INFO L129 PetriNetUnfolder]: 9776/20640 cut-off events. [2021-06-13 09:46:49,153 INFO L130 PetriNetUnfolder]: For 259289/263855 co-relation queries the response was YES. [2021-06-13 09:46:49,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119341 conditions, 20640 events. 9776/20640 cut-off events. For 259289/263855 co-relation queries the response was YES. Maximal size of possible extension queue 1435. Compared 217776 event pairs, 2120 based on Foata normal form. 2159/21796 useless extension candidates. Maximal degree in co-relation 118672. Up to 3930 conditions per place. [2021-06-13 09:46:49,336 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 116 selfloop transitions, 772 changer transitions 21/936 dead transitions. [2021-06-13 09:46:49,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 936 transitions, 22632 flow [2021-06-13 09:46:49,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-13 09:46:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-13 09:46:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 488 transitions. [2021-06-13 09:46:49,338 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8840579710144928 [2021-06-13 09:46:49,338 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 488 transitions. [2021-06-13 09:46:49,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 488 transitions. [2021-06-13 09:46:49,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:49,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 488 transitions. [2021-06-13 09:46:49,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 40.666666666666664) internal successors, (488), 12 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:49,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:49,340 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:49,340 INFO L185 Difference]: Start difference. First operand has 135 places, 799 transitions, 18900 flow. Second operand 12 states and 488 transitions. [2021-06-13 09:46:49,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 936 transitions, 22632 flow [2021-06-13 09:46:49,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 936 transitions, 21868 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-06-13 09:46:49,825 INFO L241 Difference]: Finished difference. Result has 144 places, 845 transitions, 20716 flow [2021-06-13 09:46:49,826 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=18195, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=707, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=20716, PETRI_PLACES=144, PETRI_TRANSITIONS=845} [2021-06-13 09:46:49,826 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 89 predicate places. [2021-06-13 09:46:49,826 INFO L482 AbstractCegarLoop]: Abstraction has has 144 places, 845 transitions, 20716 flow [2021-06-13 09:46:49,826 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) [2021-06-13 09:46:49,826 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:49,826 INFO L255 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] [2021-06-13 09:46:49,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-13 09:46:49,826 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:49,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:49,827 INFO L82 PathProgramCache]: Analyzing trace with hash 2040365684, now seen corresponding path program 19 times [2021-06-13 09:46:49,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:49,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400860542] [2021-06-13 09:46:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:49,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:49,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:49,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:49,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:49,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:49,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:49,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:49,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:49,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:49,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:49,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:49,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:49,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:49,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:49,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:49,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:49,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:49,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:49,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:49,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400860542] [2021-06-13 09:46:49,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400860542] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:49,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:49,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:46:49,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361507540] [2021-06-13 09:46:49,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:46:49,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:49,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:46:49,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:46:49,865 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:49,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 845 transitions, 20716 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) [2021-06-13 09:46:49,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:49,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:49,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:53,461 INFO L129 PetriNetUnfolder]: 9206/19899 cut-off events. [2021-06-13 09:46:53,461 INFO L130 PetriNetUnfolder]: For 283339/288294 co-relation queries the response was YES. [2021-06-13 09:46:53,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119443 conditions, 19899 events. 9206/19899 cut-off events. For 283339/288294 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 212192 event pairs, 2080 based on Foata normal form. 2272/21261 useless extension candidates. Maximal degree in co-relation 118787. Up to 3784 conditions per place. [2021-06-13 09:46:53,829 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 88 selfloop transitions, 913 changer transitions 25/1053 dead transitions. [2021-06-13 09:46:53,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 1053 transitions, 27762 flow [2021-06-13 09:46:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:46:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:46:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-06-13 09:46:53,831 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-06-13 09:46:53,831 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-06-13 09:46:53,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-06-13 09:46:53,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:53,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-06-13 09:46:53,832 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) [2021-06-13 09:46:53,832 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) [2021-06-13 09:46:53,832 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) [2021-06-13 09:46:53,832 INFO L185 Difference]: Start difference. First operand has 144 places, 845 transitions, 20716 flow. Second operand 9 states and 365 transitions. [2021-06-13 09:46:53,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 1053 transitions, 27762 flow [2021-06-13 09:46:54,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 1053 transitions, 25868 flow, removed 5 selfloop flow, removed 8 redundant places. [2021-06-13 09:46:54,439 INFO L241 Difference]: Finished difference. Result has 147 places, 986 transitions, 24751 flow [2021-06-13 09:46:54,440 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=18860, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=745, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24751, PETRI_PLACES=147, PETRI_TRANSITIONS=986} [2021-06-13 09:46:54,440 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 92 predicate places. [2021-06-13 09:46:54,440 INFO L482 AbstractCegarLoop]: Abstraction has has 147 places, 986 transitions, 24751 flow [2021-06-13 09:46:54,440 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) [2021-06-13 09:46:54,440 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:46:54,440 INFO L255 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] [2021-06-13 09:46:54,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-13 09:46:54,441 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:46:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:46:54,441 INFO L82 PathProgramCache]: Analyzing trace with hash -2025798536, now seen corresponding path program 20 times [2021-06-13 09:46:54,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:46:54,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924092320] [2021-06-13 09:46:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:46:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:46:54,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:54,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:46:54,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:54,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:54,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:54,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:54,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:54,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:54,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:54,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:54,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:54,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:54,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:54,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:46:54,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:54,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:54,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:54,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:46:54,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:46:54,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:46:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:46:54,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:46:54,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924092320] [2021-06-13 09:46:54,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924092320] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:46:54,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:46:54,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 09:46:54,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903916394] [2021-06-13 09:46:54,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 09:46:54,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:46:54,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 09:46:54,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-13 09:46:54,480 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:46:54,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 986 transitions, 24751 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) [2021-06-13 09:46:54,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:46:54,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:46:54,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:46:58,760 INFO L129 PetriNetUnfolder]: 10482/22307 cut-off events. [2021-06-13 09:46:58,761 INFO L130 PetriNetUnfolder]: For 307626/313349 co-relation queries the response was YES. [2021-06-13 09:46:58,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131728 conditions, 22307 events. 10482/22307 cut-off events. For 307626/313349 co-relation queries the response was YES. Maximal size of possible extension queue 1584. Compared 240613 event pairs, 1397 based on Foata normal form. 1945/23080 useless extension candidates. Maximal degree in co-relation 131122. Up to 5617 conditions per place. [2021-06-13 09:46:58,977 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 111 selfloop transitions, 950 changer transitions 1/1089 dead transitions. [2021-06-13 09:46:58,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 1089 transitions, 28232 flow [2021-06-13 09:46:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 09:46:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 09:46:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 281 transitions. [2021-06-13 09:46:58,978 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8726708074534162 [2021-06-13 09:46:58,978 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 281 transitions. [2021-06-13 09:46:58,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 281 transitions. [2021-06-13 09:46:58,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:46:58,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 281 transitions. [2021-06-13 09:46:58,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:58,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:58,979 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:46:58,979 INFO L185 Difference]: Start difference. First operand has 147 places, 986 transitions, 24751 flow. Second operand 7 states and 281 transitions. [2021-06-13 09:46:58,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 1089 transitions, 28232 flow [2021-06-13 09:46:59,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 1089 transitions, 27914 flow, removed 11 selfloop flow, removed 3 redundant places. [2021-06-13 09:47:00,015 INFO L241 Difference]: Finished difference. Result has 153 places, 1043 transitions, 28637 flow [2021-06-13 09:47:00,016 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=24433, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=898, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28637, PETRI_PLACES=153, PETRI_TRANSITIONS=1043} [2021-06-13 09:47:00,016 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 98 predicate places. [2021-06-13 09:47:00,016 INFO L482 AbstractCegarLoop]: Abstraction has has 153 places, 1043 transitions, 28637 flow [2021-06-13 09:47:00,016 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) [2021-06-13 09:47:00,016 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:47:00,016 INFO L255 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] [2021-06-13 09:47:00,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-13 09:47:00,017 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:47:00,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:47:00,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1375491024, now seen corresponding path program 21 times [2021-06-13 09:47:00,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:47:00,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532467095] [2021-06-13 09:47:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:47:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:47:00,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:00,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:47:00,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:00,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:00,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:00,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:00,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:00,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:00,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:00,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:00,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:00,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:47:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:47:00,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:47:00,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532467095] [2021-06-13 09:47:00,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532467095] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:47:00,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:47:00,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 09:47:00,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935086024] [2021-06-13 09:47:00,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 09:47:00,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:47:00,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 09:47:00,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-13 09:47:00,064 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:47:00,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 1043 transitions, 28637 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) [2021-06-13 09:47:00,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:47:00,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:47:00,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:47:04,298 INFO L129 PetriNetUnfolder]: 8995/20122 cut-off events. [2021-06-13 09:47:04,298 INFO L130 PetriNetUnfolder]: For 333795/338330 co-relation queries the response was YES. [2021-06-13 09:47:04,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127712 conditions, 20122 events. 8995/20122 cut-off events. For 333795/338330 co-relation queries the response was YES. Maximal size of possible extension queue 1368. Compared 220078 event pairs, 2061 based on Foata normal form. 1591/20866 useless extension candidates. Maximal degree in co-relation 127023. Up to 7968 conditions per place. [2021-06-13 09:47:04,663 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 258 selfloop transitions, 851 changer transitions 25/1161 dead transitions. [2021-06-13 09:47:04,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 1161 transitions, 33444 flow [2021-06-13 09:47:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 09:47:04,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 09:47:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 320 transitions. [2021-06-13 09:47:04,665 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-06-13 09:47:04,665 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 320 transitions. [2021-06-13 09:47:04,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 320 transitions. [2021-06-13 09:47:04,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:47:04,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 320 transitions. [2021-06-13 09:47:04,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:47:04,666 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) [2021-06-13 09:47:04,666 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) [2021-06-13 09:47:04,666 INFO L185 Difference]: Start difference. First operand has 153 places, 1043 transitions, 28637 flow. Second operand 8 states and 320 transitions. [2021-06-13 09:47:04,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 1161 transitions, 33444 flow [2021-06-13 09:47:06,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 1161 transitions, 32639 flow, removed 39 selfloop flow, removed 4 redundant places. [2021-06-13 09:47:06,058 INFO L241 Difference]: Finished difference. Result has 158 places, 1081 transitions, 30957 flow [2021-06-13 09:47:06,059 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=27176, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=769, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30957, PETRI_PLACES=158, PETRI_TRANSITIONS=1081} [2021-06-13 09:47:06,059 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 103 predicate places. [2021-06-13 09:47:06,059 INFO L482 AbstractCegarLoop]: Abstraction has has 158 places, 1081 transitions, 30957 flow [2021-06-13 09:47:06,060 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) [2021-06-13 09:47:06,060 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:47:06,060 INFO L255 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] [2021-06-13 09:47:06,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-13 09:47:06,060 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:47:06,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:47:06,061 INFO L82 PathProgramCache]: Analyzing trace with hash 64415764, now seen corresponding path program 22 times [2021-06-13 09:47:06,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:47:06,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778279364] [2021-06-13 09:47:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:47:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:47:06,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:06,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:47:06,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:06,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:06,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:06,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:06,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:06,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:06,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:06,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:06,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:06,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:06,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:06,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:06,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:06,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:47:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:47:06,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:47:06,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778279364] [2021-06-13 09:47:06,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778279364] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:47:06,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:47:06,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 09:47:06,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583314555] [2021-06-13 09:47:06,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 09:47:06,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:47:06,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 09:47:06,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-13 09:47:06,102 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:47:06,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 1081 transitions, 30957 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) [2021-06-13 09:47:06,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:47:06,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:47:06,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:47:10,996 INFO L129 PetriNetUnfolder]: 8839/20049 cut-off events. [2021-06-13 09:47:10,997 INFO L130 PetriNetUnfolder]: For 352448/356985 co-relation queries the response was YES. [2021-06-13 09:47:11,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128744 conditions, 20049 events. 8839/20049 cut-off events. For 352448/356985 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 221968 event pairs, 1724 based on Foata normal form. 1509/20696 useless extension candidates. Maximal degree in co-relation 128069. Up to 5470 conditions per place. [2021-06-13 09:47:11,223 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 136 selfloop transitions, 1009 changer transitions 31/1203 dead transitions. [2021-06-13 09:47:11,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 1203 transitions, 35369 flow [2021-06-13 09:47:11,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-13 09:47:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-13 09:47:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 488 transitions. [2021-06-13 09:47:11,224 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8840579710144928 [2021-06-13 09:47:11,224 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 488 transitions. [2021-06-13 09:47:11,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 488 transitions. [2021-06-13 09:47:11,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:47:11,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 488 transitions. [2021-06-13 09:47:11,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 40.666666666666664) internal successors, (488), 12 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:47:11,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:47:11,225 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:47:11,226 INFO L185 Difference]: Start difference. First operand has 158 places, 1081 transitions, 30957 flow. Second operand 12 states and 488 transitions. [2021-06-13 09:47:11,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 1203 transitions, 35369 flow [2021-06-13 09:47:12,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 1203 transitions, 35013 flow, removed 28 selfloop flow, removed 3 redundant places. [2021-06-13 09:47:12,913 INFO L241 Difference]: Finished difference. Result has 169 places, 1114 transitions, 33441 flow [2021-06-13 09:47:12,914 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=30546, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1077, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=944, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=33441, PETRI_PLACES=169, PETRI_TRANSITIONS=1114} [2021-06-13 09:47:12,914 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 114 predicate places. [2021-06-13 09:47:12,914 INFO L482 AbstractCegarLoop]: Abstraction has has 169 places, 1114 transitions, 33441 flow [2021-06-13 09:47:12,914 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) [2021-06-13 09:47:12,914 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:47:12,914 INFO L255 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] [2021-06-13 09:47:12,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-13 09:47:12,915 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:47:12,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:47:12,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1623470046, now seen corresponding path program 23 times [2021-06-13 09:47:12,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:47:12,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928610124] [2021-06-13 09:47:12,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:47:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:47:12,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:12,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:47:12,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:12,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:12,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:12,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:12,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:12,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:12,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:12,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:12,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:12,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:12,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:12,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:47:12,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:12,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:12,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:12,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:12,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:12,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:47:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:47:12,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:47:12,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928610124] [2021-06-13 09:47:12,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928610124] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:47:12,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:47:12,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 09:47:12,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774401812] [2021-06-13 09:47:12,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 09:47:12,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:47:12,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 09:47:12,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-13 09:47:12,947 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:47:12,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 1114 transitions, 33441 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) [2021-06-13 09:47:12,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:47:12,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:47:12,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:47:17,441 INFO L129 PetriNetUnfolder]: 8359/19049 cut-off events. [2021-06-13 09:47:17,441 INFO L130 PetriNetUnfolder]: For 401546/405906 co-relation queries the response was YES. [2021-06-13 09:47:17,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130282 conditions, 19049 events. 8359/19049 cut-off events. For 401546/405906 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 210605 event pairs, 1071 based on Foata normal form. 1354/19623 useless extension candidates. Maximal degree in co-relation 129678. Up to 4529 conditions per place. [2021-06-13 09:47:17,627 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 115 selfloop transitions, 1015 changer transitions 5/1162 dead transitions. [2021-06-13 09:47:17,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 1162 transitions, 36281 flow [2021-06-13 09:47:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 09:47:17,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 09:47:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 281 transitions. [2021-06-13 09:47:17,628 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8726708074534162 [2021-06-13 09:47:17,628 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 281 transitions. [2021-06-13 09:47:17,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 281 transitions. [2021-06-13 09:47:17,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:47:17,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 281 transitions. [2021-06-13 09:47:17,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:47:17,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:47:17,630 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:47:17,630 INFO L185 Difference]: Start difference. First operand has 169 places, 1114 transitions, 33441 flow. Second operand 7 states and 281 transitions. [2021-06-13 09:47:17,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 1162 transitions, 36281 flow [2021-06-13 09:47:19,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1162 transitions, 34537 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-06-13 09:47:19,343 INFO L241 Difference]: Finished difference. Result has 169 places, 1119 transitions, 34438 flow [2021-06-13 09:47:19,344 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=31709, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1007, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34438, PETRI_PLACES=169, PETRI_TRANSITIONS=1119} [2021-06-13 09:47:19,344 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 114 predicate places. [2021-06-13 09:47:19,344 INFO L482 AbstractCegarLoop]: Abstraction has has 169 places, 1119 transitions, 34438 flow [2021-06-13 09:47:19,344 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) [2021-06-13 09:47:19,344 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:47:19,344 INFO L255 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] [2021-06-13 09:47:19,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-13 09:47:19,344 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:47:19,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:47:19,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1156547056, now seen corresponding path program 24 times [2021-06-13 09:47:19,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:47:19,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279241076] [2021-06-13 09:47:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:47:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:47:19,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:19,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:47:19,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:19,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:19,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:19,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:19,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:19,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:19,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:19,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:19,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:19,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:19,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:19,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:19,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:19,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:19,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:19,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:19,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:19,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:47:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:47:19,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:47:19,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279241076] [2021-06-13 09:47:19,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279241076] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:47:19,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:47:19,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 09:47:19,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972195629] [2021-06-13 09:47:19,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 09:47:19,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:47:19,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 09:47:19,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-13 09:47:19,400 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:47:19,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 1119 transitions, 34438 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) [2021-06-13 09:47:19,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:47:19,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:47:19,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:47:24,379 INFO L129 PetriNetUnfolder]: 8389/19394 cut-off events. [2021-06-13 09:47:24,379 INFO L130 PetriNetUnfolder]: For 430500/434772 co-relation queries the response was YES. [2021-06-13 09:47:24,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141268 conditions, 19394 events. 8389/19394 cut-off events. For 430500/434772 co-relation queries the response was YES. Maximal size of possible extension queue 1422. Compared 217473 event pairs, 1531 based on Foata normal form. 1329/19965 useless extension candidates. Maximal degree in co-relation 140692. Up to 4463 conditions per place. [2021-06-13 09:47:24,565 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 109 selfloop transitions, 1035 changer transitions 115/1286 dead transitions. [2021-06-13 09:47:24,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 1286 transitions, 40541 flow [2021-06-13 09:47:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 09:47:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 09:47:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 527 transitions. [2021-06-13 09:47:24,567 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8812709030100334 [2021-06-13 09:47:24,567 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 527 transitions. [2021-06-13 09:47:24,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 527 transitions. [2021-06-13 09:47:24,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:47:24,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 527 transitions. [2021-06-13 09:47:24,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.53846153846154) internal successors, (527), 13 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:47:24,569 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) [2021-06-13 09:47:24,569 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) [2021-06-13 09:47:24,569 INFO L185 Difference]: Start difference. First operand has 169 places, 1119 transitions, 34438 flow. Second operand 13 states and 527 transitions. [2021-06-13 09:47:24,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 1286 transitions, 40541 flow [2021-06-13 09:47:26,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 1286 transitions, 38777 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-13 09:47:26,561 INFO L241 Difference]: Finished difference. Result has 178 places, 1119 transitions, 34306 flow [2021-06-13 09:47:26,561 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=32848, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=936, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=34306, PETRI_PLACES=178, PETRI_TRANSITIONS=1119} [2021-06-13 09:47:26,561 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 123 predicate places. [2021-06-13 09:47:26,561 INFO L482 AbstractCegarLoop]: Abstraction has has 178 places, 1119 transitions, 34306 flow [2021-06-13 09:47:26,561 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) [2021-06-13 09:47:26,561 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:47:26,562 INFO L255 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] [2021-06-13 09:47:26,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-13 09:47:26,562 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:47:26,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:47:26,562 INFO L82 PathProgramCache]: Analyzing trace with hash -948186080, now seen corresponding path program 25 times [2021-06-13 09:47:26,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:47:26,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943994243] [2021-06-13 09:47:26,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:47:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:47:26,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:26,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:47:26,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:26,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:26,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:26,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:26,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:26,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:26,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:26,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:47:26,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:26,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:26,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:26,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:26,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:26,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:26,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:26,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:26,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:26,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:47:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:47:26,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:47:26,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943994243] [2021-06-13 09:47:26,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943994243] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:47:26,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:47:26,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:47:26,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389361766] [2021-06-13 09:47:26,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:47:26,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:47:26,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:47:26,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:47:26,599 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:47:26,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 1119 transitions, 34306 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) [2021-06-13 09:47:26,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:47:26,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:47:26,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:47:31,546 INFO L129 PetriNetUnfolder]: 8614/20143 cut-off events. [2021-06-13 09:47:31,546 INFO L130 PetriNetUnfolder]: For 473326/478380 co-relation queries the response was YES. [2021-06-13 09:47:31,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145016 conditions, 20143 events. 8614/20143 cut-off events. For 473326/478380 co-relation queries the response was YES. Maximal size of possible extension queue 1538. Compared 229742 event pairs, 1207 based on Foata normal form. 1323/20665 useless extension candidates. Maximal degree in co-relation 144421. Up to 4120 conditions per place. [2021-06-13 09:47:31,763 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 140 selfloop transitions, 1045 changer transitions 28/1240 dead transitions. [2021-06-13 09:47:31,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 1240 transitions, 39285 flow [2021-06-13 09:47:31,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:47:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:47:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 364 transitions. [2021-06-13 09:47:31,765 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8792270531400966 [2021-06-13 09:47:31,765 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 364 transitions. [2021-06-13 09:47:31,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 364 transitions. [2021-06-13 09:47:31,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:47:31,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 364 transitions. [2021-06-13 09:47:31,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.44444444444444) internal successors, (364), 9 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:47:31,766 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) [2021-06-13 09:47:31,766 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) [2021-06-13 09:47:31,766 INFO L185 Difference]: Start difference. First operand has 178 places, 1119 transitions, 34306 flow. Second operand 9 states and 364 transitions. [2021-06-13 09:47:31,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 1240 transitions, 39285 flow [2021-06-13 09:47:34,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 1240 transitions, 39093 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-06-13 09:47:34,250 INFO L241 Difference]: Finished difference. Result has 185 places, 1167 transitions, 37680 flow [2021-06-13 09:47:34,251 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=34118, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=984, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37680, PETRI_PLACES=185, PETRI_TRANSITIONS=1167} [2021-06-13 09:47:34,251 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 130 predicate places. [2021-06-13 09:47:34,251 INFO L482 AbstractCegarLoop]: Abstraction has has 185 places, 1167 transitions, 37680 flow [2021-06-13 09:47:34,251 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) [2021-06-13 09:47:34,251 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:47:34,251 INFO L255 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] [2021-06-13 09:47:34,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-13 09:47:34,251 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:47:34,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:47:34,251 INFO L82 PathProgramCache]: Analyzing trace with hash -120111408, now seen corresponding path program 26 times [2021-06-13 09:47:34,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:47:34,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099423674] [2021-06-13 09:47:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:47:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:47:34,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:34,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:47:34,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:34,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:34,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:34,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:34,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:34,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:34,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:34,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:34,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:34,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:34,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:34,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:47:34,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:34,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:34,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:34,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:34,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:34,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:47:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:47:34,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:47:34,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099423674] [2021-06-13 09:47:34,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099423674] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:47:34,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:47:34,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:47:34,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352103438] [2021-06-13 09:47:34,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:47:34,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:47:34,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:47:34,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:47:34,300 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:47:34,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 1167 transitions, 37680 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) [2021-06-13 09:47:34,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:47:34,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:47:34,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:47:39,285 INFO L129 PetriNetUnfolder]: 8457/19468 cut-off events. [2021-06-13 09:47:39,285 INFO L130 PetriNetUnfolder]: For 500651/505834 co-relation queries the response was YES. [2021-06-13 09:47:39,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150366 conditions, 19468 events. 8457/19468 cut-off events. For 500651/505834 co-relation queries the response was YES. Maximal size of possible extension queue 1449. Compared 217255 event pairs, 829 based on Foata normal form. 1292/19964 useless extension candidates. Maximal degree in co-relation 149701. Up to 4888 conditions per place. [2021-06-13 09:47:39,478 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 99 selfloop transitions, 1162 changer transitions 2/1290 dead transitions. [2021-06-13 09:47:39,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 1290 transitions, 41600 flow [2021-06-13 09:47:39,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:47:39,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:47:39,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-06-13 09:47:39,479 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-06-13 09:47:39,480 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-06-13 09:47:39,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-06-13 09:47:39,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:47:39,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-06-13 09:47:39,480 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) [2021-06-13 09:47:39,481 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) [2021-06-13 09:47:39,481 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) [2021-06-13 09:47:39,481 INFO L185 Difference]: Start difference. First operand has 185 places, 1167 transitions, 37680 flow. Second operand 9 states and 365 transitions. [2021-06-13 09:47:39,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 1290 transitions, 41600 flow [2021-06-13 09:47:42,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 1290 transitions, 40142 flow, removed 18 selfloop flow, removed 4 redundant places. [2021-06-13 09:47:42,468 INFO L241 Difference]: Finished difference. Result has 191 places, 1244 transitions, 40385 flow [2021-06-13 09:47:42,469 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=36276, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40385, PETRI_PLACES=191, PETRI_TRANSITIONS=1244} [2021-06-13 09:47:42,469 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 136 predicate places. [2021-06-13 09:47:42,470 INFO L482 AbstractCegarLoop]: Abstraction has has 191 places, 1244 transitions, 40385 flow [2021-06-13 09:47:42,471 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) [2021-06-13 09:47:42,471 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:47:42,471 INFO L255 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] [2021-06-13 09:47:42,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-13 09:47:42,472 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:47:42,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:47:42,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1327711002, now seen corresponding path program 27 times [2021-06-13 09:47:42,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:47:42,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194552321] [2021-06-13 09:47:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:47:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:47:42,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:42,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:47:42,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:42,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:42,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:42,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:42,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:42,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:42,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:42,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:47:42,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:42,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:42,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:42,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:42,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:42,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:42,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:42,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:42,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:42,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:47:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:47:42,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:47:42,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194552321] [2021-06-13 09:47:42,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194552321] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:47:42,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:47:42,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:47:42,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333258702] [2021-06-13 09:47:42,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:47:42,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:47:42,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:47:42,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:47:42,513 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:47:42,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 1244 transitions, 40385 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) [2021-06-13 09:47:42,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:47:42,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:47:42,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:47:48,106 INFO L129 PetriNetUnfolder]: 8696/20517 cut-off events. [2021-06-13 09:47:48,106 INFO L130 PetriNetUnfolder]: For 584176/590055 co-relation queries the response was YES. [2021-06-13 09:47:48,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161865 conditions, 20517 events. 8696/20517 cut-off events. For 584176/590055 co-relation queries the response was YES. Maximal size of possible extension queue 1551. Compared 235096 event pairs, 1156 based on Foata normal form. 1363/21094 useless extension candidates. Maximal degree in co-relation 161084. Up to 4459 conditions per place. [2021-06-13 09:47:48,380 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 186 selfloop transitions, 1113 changer transitions 1/1327 dead transitions. [2021-06-13 09:47:48,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 1327 transitions, 44136 flow [2021-06-13 09:47:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:47:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:47:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 364 transitions. [2021-06-13 09:47:48,381 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8792270531400966 [2021-06-13 09:47:48,381 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 364 transitions. [2021-06-13 09:47:48,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 364 transitions. [2021-06-13 09:47:48,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:47:48,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 364 transitions. [2021-06-13 09:47:48,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.44444444444444) internal successors, (364), 9 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:47:48,382 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) [2021-06-13 09:47:48,382 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) [2021-06-13 09:47:48,382 INFO L185 Difference]: Start difference. First operand has 191 places, 1244 transitions, 40385 flow. Second operand 9 states and 364 transitions. [2021-06-13 09:47:48,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 1327 transitions, 44136 flow [2021-06-13 09:47:51,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 1327 transitions, 43182 flow, removed 63 selfloop flow, removed 3 redundant places. [2021-06-13 09:47:51,474 INFO L241 Difference]: Finished difference. Result has 198 places, 1269 transitions, 42427 flow [2021-06-13 09:47:51,475 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=39448, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1088, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42427, PETRI_PLACES=198, PETRI_TRANSITIONS=1269} [2021-06-13 09:47:51,475 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 143 predicate places. [2021-06-13 09:47:51,475 INFO L482 AbstractCegarLoop]: Abstraction has has 198 places, 1269 transitions, 42427 flow [2021-06-13 09:47:51,475 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) [2021-06-13 09:47:51,475 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:47:51,475 INFO L255 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] [2021-06-13 09:47:51,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-13 09:47:51,476 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:47:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:47:51,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1357942226, now seen corresponding path program 28 times [2021-06-13 09:47:51,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:47:51,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474974702] [2021-06-13 09:47:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:47:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:47:51,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:51,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:47:51,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:51,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:51,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:51,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:51,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:51,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:51,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:51,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:51,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:51,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:51,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:51,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:51,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:51,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:51,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:51,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:47:51,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:47:51,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:47:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:47:51,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:47:51,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474974702] [2021-06-13 09:47:51,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474974702] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:47:51,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:47:51,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 09:47:51,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584504674] [2021-06-13 09:47:51,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 09:47:51,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:47:51,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 09:47:51,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-13 09:47:51,531 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:47:51,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 1269 transitions, 42427 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) [2021-06-13 09:47:51,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:47:51,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:47:51,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:47:57,394 INFO L129 PetriNetUnfolder]: 8673/20568 cut-off events. [2021-06-13 09:47:57,395 INFO L130 PetriNetUnfolder]: For 626436/632020 co-relation queries the response was YES. [2021-06-13 09:47:57,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168116 conditions, 20568 events. 8673/20568 cut-off events. For 626436/632020 co-relation queries the response was YES. Maximal size of possible extension queue 1587. Compared 236578 event pairs, 1735 based on Foata normal form. 1214/21017 useless extension candidates. Maximal degree in co-relation 167367. Up to 5519 conditions per place. [2021-06-13 09:47:57,611 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 233 selfloop transitions, 1062 changer transitions 24/1346 dead transitions. [2021-06-13 09:47:57,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 1346 transitions, 46120 flow [2021-06-13 09:47:57,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 09:47:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 09:47:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 530 transitions. [2021-06-13 09:47:57,612 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8862876254180602 [2021-06-13 09:47:57,612 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 530 transitions. [2021-06-13 09:47:57,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 530 transitions. [2021-06-13 09:47:57,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:47:57,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 530 transitions. [2021-06-13 09:47:57,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.76923076923077) internal successors, (530), 13 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:47:57,614 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) [2021-06-13 09:47:57,614 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) [2021-06-13 09:47:57,614 INFO L185 Difference]: Start difference. First operand has 198 places, 1269 transitions, 42427 flow. Second operand 13 states and 530 transitions. [2021-06-13 09:47:57,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 1346 transitions, 46120 flow [2021-06-13 09:48:00,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1346 transitions, 44821 flow, removed 13 selfloop flow, removed 6 redundant places. [2021-06-13 09:48:00,857 INFO L241 Difference]: Finished difference. Result has 205 places, 1266 transitions, 42765 flow [2021-06-13 09:48:00,858 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=41154, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1042, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=42765, PETRI_PLACES=205, PETRI_TRANSITIONS=1266} [2021-06-13 09:48:00,858 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 150 predicate places. [2021-06-13 09:48:00,858 INFO L482 AbstractCegarLoop]: Abstraction has has 205 places, 1266 transitions, 42765 flow [2021-06-13 09:48:00,858 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) [2021-06-13 09:48:00,858 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:48:00,858 INFO L255 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] [2021-06-13 09:48:00,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-13 09:48:00,859 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:48:00,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:48:00,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1494667088, now seen corresponding path program 29 times [2021-06-13 09:48:00,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:48:00,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84006445] [2021-06-13 09:48:00,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:48:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:48:00,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:00,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:48:00,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:00,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:00,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:00,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:00,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:00,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:00,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:00,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:48:00,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:00,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:00,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:00,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:00,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:00,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:00,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:00,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:48:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:48:00,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:48:00,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84006445] [2021-06-13 09:48:00,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84006445] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:48:00,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:48:00,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 09:48:00,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447468812] [2021-06-13 09:48:00,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 09:48:00,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:48:00,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 09:48:00,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-13 09:48:00,897 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:48:00,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 1266 transitions, 42765 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) [2021-06-13 09:48:00,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:48:00,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:48:00,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:48:06,500 INFO L129 PetriNetUnfolder]: 8605/20195 cut-off events. [2021-06-13 09:48:06,500 INFO L130 PetriNetUnfolder]: For 627754/634132 co-relation queries the response was YES. [2021-06-13 09:48:06,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166199 conditions, 20195 events. 8605/20195 cut-off events. For 627754/634132 co-relation queries the response was YES. Maximal size of possible extension queue 1524. Compared 230011 event pairs, 1151 based on Foata normal form. 1238/20656 useless extension candidates. Maximal degree in co-relation 165442. Up to 4980 conditions per place. [2021-06-13 09:48:06,710 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 180 selfloop transitions, 1123 changer transitions 2/1332 dead transitions. [2021-06-13 09:48:06,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 1332 transitions, 46422 flow [2021-06-13 09:48:06,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 09:48:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 09:48:06,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 281 transitions. [2021-06-13 09:48:06,711 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8726708074534162 [2021-06-13 09:48:06,711 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 281 transitions. [2021-06-13 09:48:06,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 281 transitions. [2021-06-13 09:48:06,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:48:06,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 281 transitions. [2021-06-13 09:48:06,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:06,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:06,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:06,712 INFO L185 Difference]: Start difference. First operand has 205 places, 1266 transitions, 42765 flow. Second operand 7 states and 281 transitions. [2021-06-13 09:48:06,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 1332 transitions, 46422 flow [2021-06-13 09:48:09,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 1332 transitions, 44801 flow, removed 5 selfloop flow, removed 9 redundant places. [2021-06-13 09:48:09,508 INFO L241 Difference]: Finished difference. Result has 203 places, 1286 transitions, 43901 flow [2021-06-13 09:48:09,509 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=41188, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43901, PETRI_PLACES=203, PETRI_TRANSITIONS=1286} [2021-06-13 09:48:09,509 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 148 predicate places. [2021-06-13 09:48:09,510 INFO L482 AbstractCegarLoop]: Abstraction has has 203 places, 1286 transitions, 43901 flow [2021-06-13 09:48:09,510 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) [2021-06-13 09:48:09,510 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:48:09,510 INFO L255 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] [2021-06-13 09:48:09,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-13 09:48:09,510 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:48:09,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:48:09,510 INFO L82 PathProgramCache]: Analyzing trace with hash 484715030, now seen corresponding path program 30 times [2021-06-13 09:48:09,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:48:09,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539740462] [2021-06-13 09:48:09,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:48:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:48:09,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:09,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:48:09,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:09,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:09,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:09,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:09,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:09,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:09,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:09,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:09,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:09,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:09,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:09,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:09,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:09,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:09,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:09,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:09,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:09,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:48:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:48:09,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:48:09,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539740462] [2021-06-13 09:48:09,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539740462] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:48:09,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:48:09,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 09:48:09,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639472654] [2021-06-13 09:48:09,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 09:48:09,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:48:09,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 09:48:09,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-13 09:48:09,567 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:48:09,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 1286 transitions, 43901 flow. Second operand has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:09,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:48:09,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:48:09,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:48:15,428 INFO L129 PetriNetUnfolder]: 8593/20419 cut-off events. [2021-06-13 09:48:15,429 INFO L130 PetriNetUnfolder]: For 654204/660437 co-relation queries the response was YES. [2021-06-13 09:48:15,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171854 conditions, 20419 events. 8593/20419 cut-off events. For 654204/660437 co-relation queries the response was YES. Maximal size of possible extension queue 1572. Compared 234659 event pairs, 1767 based on Foata normal form. 1194/20866 useless extension candidates. Maximal degree in co-relation 171117. Up to 5576 conditions per place. [2021-06-13 09:48:15,783 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 266 selfloop transitions, 1050 changer transitions 17/1360 dead transitions. [2021-06-13 09:48:15,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 1360 transitions, 47538 flow [2021-06-13 09:48:15,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-13 09:48:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-13 09:48:15,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 675 transitions. [2021-06-13 09:48:15,785 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8631713554987213 [2021-06-13 09:48:15,785 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 675 transitions. [2021-06-13 09:48:15,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 675 transitions. [2021-06-13 09:48:15,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:48:15,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 675 transitions. [2021-06-13 09:48:15,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 39.705882352941174) internal successors, (675), 17 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:15,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:15,787 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:15,787 INFO L185 Difference]: Start difference. First operand has 203 places, 1286 transitions, 43901 flow. Second operand 17 states and 675 transitions. [2021-06-13 09:48:15,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 1360 transitions, 47538 flow [2021-06-13 09:48:18,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 1360 transitions, 45982 flow, removed 15 selfloop flow, removed 5 redundant places. [2021-06-13 09:48:18,375 INFO L241 Difference]: Finished difference. Result has 215 places, 1274 transitions, 43918 flow [2021-06-13 09:48:18,376 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=42376, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=43918, PETRI_PLACES=215, PETRI_TRANSITIONS=1274} [2021-06-13 09:48:18,376 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 160 predicate places. [2021-06-13 09:48:18,376 INFO L482 AbstractCegarLoop]: Abstraction has has 215 places, 1274 transitions, 43918 flow [2021-06-13 09:48:18,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:18,376 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:48:18,376 INFO L255 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] [2021-06-13 09:48:18,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-13 09:48:18,376 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:48:18,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:48:18,377 INFO L82 PathProgramCache]: Analyzing trace with hash 403095128, now seen corresponding path program 31 times [2021-06-13 09:48:18,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:48:18,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981074267] [2021-06-13 09:48:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:48:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:48:18,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:18,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:48:18,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:18,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:18,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:18,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:18,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:18,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:18,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:18,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:18,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:18,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:18,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:18,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:48:18,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:18,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:18,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:18,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:18,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:18,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:48:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:48:18,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:48:18,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981074267] [2021-06-13 09:48:18,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981074267] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:48:18,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:48:18,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 09:48:18,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298126999] [2021-06-13 09:48:18,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 09:48:18,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:48:18,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 09:48:18,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-13 09:48:18,415 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:48:18,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 1274 transitions, 43918 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) [2021-06-13 09:48:18,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:48:18,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:48:18,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:48:23,734 INFO L129 PetriNetUnfolder]: 7981/19326 cut-off events. [2021-06-13 09:48:23,734 INFO L130 PetriNetUnfolder]: For 668735/674804 co-relation queries the response was YES. [2021-06-13 09:48:23,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165550 conditions, 19326 events. 7981/19326 cut-off events. For 668735/674804 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 222448 event pairs, 1010 based on Foata normal form. 1400/20052 useless extension candidates. Maximal degree in co-relation 164775. Up to 4634 conditions per place. [2021-06-13 09:48:23,945 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 195 selfloop transitions, 1140 changer transitions 7/1369 dead transitions. [2021-06-13 09:48:23,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 1369 transitions, 48599 flow [2021-06-13 09:48:23,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 09:48:23,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 09:48:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 281 transitions. [2021-06-13 09:48:23,946 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8726708074534162 [2021-06-13 09:48:23,946 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 281 transitions. [2021-06-13 09:48:23,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 281 transitions. [2021-06-13 09:48:23,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:48:23,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 281 transitions. [2021-06-13 09:48:23,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:23,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:23,948 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:23,948 INFO L185 Difference]: Start difference. First operand has 215 places, 1274 transitions, 43918 flow. Second operand 7 states and 281 transitions. [2021-06-13 09:48:23,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 1369 transitions, 48599 flow [2021-06-13 09:48:26,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 1369 transitions, 46903 flow, removed 0 selfloop flow, removed 12 redundant places. [2021-06-13 09:48:26,693 INFO L241 Difference]: Finished difference. Result has 210 places, 1307 transitions, 45694 flow [2021-06-13 09:48:26,693 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=42229, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=45694, PETRI_PLACES=210, PETRI_TRANSITIONS=1307} [2021-06-13 09:48:26,693 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 155 predicate places. [2021-06-13 09:48:26,694 INFO L482 AbstractCegarLoop]: Abstraction has has 210 places, 1307 transitions, 45694 flow [2021-06-13 09:48:26,694 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) [2021-06-13 09:48:26,694 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:48:26,694 INFO L255 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] [2021-06-13 09:48:26,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-13 09:48:26,694 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:48:26,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:48:26,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1842187734, now seen corresponding path program 32 times [2021-06-13 09:48:26,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:48:26,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877769117] [2021-06-13 09:48:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:48:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:48:26,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:26,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:48:26,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:26,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:26,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:26,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:26,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:26,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:26,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:26,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:26,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:26,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:26,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:26,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:26,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:26,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:26,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:26,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:26,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:26,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:48:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:48:26,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:48:26,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877769117] [2021-06-13 09:48:26,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877769117] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:48:26,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:48:26,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 09:48:26,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867546566] [2021-06-13 09:48:26,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 09:48:26,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:48:26,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 09:48:26,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-13 09:48:26,758 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:48:26,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 1307 transitions, 45694 flow. Second operand has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:26,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:48:26,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:48:26,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:48:32,794 INFO L129 PetriNetUnfolder]: 8053/19699 cut-off events. [2021-06-13 09:48:32,794 INFO L130 PetriNetUnfolder]: For 704678/710185 co-relation queries the response was YES. [2021-06-13 09:48:32,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170877 conditions, 19699 events. 8053/19699 cut-off events. For 704678/710185 co-relation queries the response was YES. Maximal size of possible extension queue 1488. Compared 229467 event pairs, 1563 based on Foata normal form. 1153/20181 useless extension candidates. Maximal degree in co-relation 170143. Up to 4872 conditions per place. [2021-06-13 09:48:33,009 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 266 selfloop transitions, 1017 changer transitions 99/1409 dead transitions. [2021-06-13 09:48:33,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 1409 transitions, 50371 flow [2021-06-13 09:48:33,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-13 09:48:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-13 09:48:33,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 671 transitions. [2021-06-13 09:48:33,010 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8580562659846548 [2021-06-13 09:48:33,010 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 671 transitions. [2021-06-13 09:48:33,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 671 transitions. [2021-06-13 09:48:33,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:48:33,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 671 transitions. [2021-06-13 09:48:33,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 39.470588235294116) internal successors, (671), 17 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:33,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:33,012 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:33,012 INFO L185 Difference]: Start difference. First operand has 210 places, 1307 transitions, 45694 flow. Second operand 17 states and 671 transitions. [2021-06-13 09:48:33,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 1409 transitions, 50371 flow [2021-06-13 09:48:36,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1409 transitions, 48525 flow, removed 30 selfloop flow, removed 6 redundant places. [2021-06-13 09:48:36,164 INFO L241 Difference]: Finished difference. Result has 221 places, 1262 transitions, 44182 flow [2021-06-13 09:48:36,165 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=43968, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1017, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=44182, PETRI_PLACES=221, PETRI_TRANSITIONS=1262} [2021-06-13 09:48:36,165 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 166 predicate places. [2021-06-13 09:48:36,165 INFO L482 AbstractCegarLoop]: Abstraction has has 221 places, 1262 transitions, 44182 flow [2021-06-13 09:48:36,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:36,165 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:48:36,165 INFO L255 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] [2021-06-13 09:48:36,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-13 09:48:36,165 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:48:36,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:48:36,165 INFO L82 PathProgramCache]: Analyzing trace with hash 664156402, now seen corresponding path program 33 times [2021-06-13 09:48:36,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:48:36,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872005281] [2021-06-13 09:48:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:48:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:48:36,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:36,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:48:36,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:36,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:36,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:36,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:36,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:36,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:36,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:36,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:48:36,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:36,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:36,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:36,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:36,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:36,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:36,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:36,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:36,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:36,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:48:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:48:36,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:48:36,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872005281] [2021-06-13 09:48:36,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872005281] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:48:36,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:48:36,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:48:36,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433594029] [2021-06-13 09:48:36,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:48:36,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:48:36,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:48:36,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:48:36,202 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:48:36,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 1262 transitions, 44182 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) [2021-06-13 09:48:36,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:48:36,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:48:36,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:48:42,169 INFO L129 PetriNetUnfolder]: 7883/19332 cut-off events. [2021-06-13 09:48:42,169 INFO L130 PetriNetUnfolder]: For 705121/711511 co-relation queries the response was YES. [2021-06-13 09:48:42,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166113 conditions, 19332 events. 7883/19332 cut-off events. For 705121/711511 co-relation queries the response was YES. Maximal size of possible extension queue 1461. Compared 225203 event pairs, 1023 based on Foata normal form. 1457/20121 useless extension candidates. Maximal degree in co-relation 165337. Up to 4154 conditions per place. [2021-06-13 09:48:42,411 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 202 selfloop transitions, 1122 changer transitions 8/1359 dead transitions. [2021-06-13 09:48:42,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1359 transitions, 48364 flow [2021-06-13 09:48:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:48:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:48:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 364 transitions. [2021-06-13 09:48:42,412 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8792270531400966 [2021-06-13 09:48:42,412 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 364 transitions. [2021-06-13 09:48:42,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 364 transitions. [2021-06-13 09:48:42,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:48:42,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 364 transitions. [2021-06-13 09:48:42,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.44444444444444) internal successors, (364), 9 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:42,413 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) [2021-06-13 09:48:42,413 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) [2021-06-13 09:48:42,413 INFO L185 Difference]: Start difference. First operand has 221 places, 1262 transitions, 44182 flow. Second operand 9 states and 364 transitions. [2021-06-13 09:48:42,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 1359 transitions, 48364 flow [2021-06-13 09:48:44,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 1359 transitions, 45663 flow, removed 99 selfloop flow, removed 14 redundant places. [2021-06-13 09:48:44,994 INFO L241 Difference]: Finished difference. Result has 212 places, 1281 transitions, 44437 flow [2021-06-13 09:48:44,994 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=41568, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1099, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44437, PETRI_PLACES=212, PETRI_TRANSITIONS=1281} [2021-06-13 09:48:44,994 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 157 predicate places. [2021-06-13 09:48:44,995 INFO L482 AbstractCegarLoop]: Abstraction has has 212 places, 1281 transitions, 44437 flow [2021-06-13 09:48:44,995 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) [2021-06-13 09:48:44,995 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:48:44,995 INFO L255 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] [2021-06-13 09:48:44,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-13 09:48:44,995 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:48:44,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:48:44,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1658115880, now seen corresponding path program 34 times [2021-06-13 09:48:44,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:48:44,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761927141] [2021-06-13 09:48:44,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:48:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:48:45,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:45,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:48:45,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:45,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:45,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:45,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:45,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:45,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:45,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:45,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:45,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:45,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:45,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:45,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:45,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:45,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:45,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:45,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:45,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:45,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:48:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:48:45,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:48:45,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761927141] [2021-06-13 09:48:45,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761927141] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:48:45,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:48:45,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 09:48:45,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558644496] [2021-06-13 09:48:45,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 09:48:45,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:48:45,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 09:48:45,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-13 09:48:45,051 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:48:45,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 1281 transitions, 44437 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) [2021-06-13 09:48:45,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:48:45,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:48:45,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:48:50,629 INFO L129 PetriNetUnfolder]: 7861/19340 cut-off events. [2021-06-13 09:48:50,629 INFO L130 PetriNetUnfolder]: For 708316/713687 co-relation queries the response was YES. [2021-06-13 09:48:50,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167936 conditions, 19340 events. 7861/19340 cut-off events. For 708316/713687 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 225886 event pairs, 1509 based on Foata normal form. 1218/19904 useless extension candidates. Maximal degree in co-relation 167191. Up to 4918 conditions per place. [2021-06-13 09:48:50,846 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 291 selfloop transitions, 1033 changer transitions 25/1376 dead transitions. [2021-06-13 09:48:50,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1376 transitions, 48892 flow [2021-06-13 09:48:50,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 09:48:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 09:48:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 526 transitions. [2021-06-13 09:48:50,847 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8795986622073578 [2021-06-13 09:48:50,847 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 526 transitions. [2021-06-13 09:48:50,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 526 transitions. [2021-06-13 09:48:50,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:48:50,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 526 transitions. [2021-06-13 09:48:50,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.46153846153846) internal successors, (526), 13 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:48:50,848 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) [2021-06-13 09:48:50,849 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) [2021-06-13 09:48:50,849 INFO L185 Difference]: Start difference. First operand has 212 places, 1281 transitions, 44437 flow. Second operand 13 states and 526 transitions. [2021-06-13 09:48:50,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 1376 transitions, 48892 flow [2021-06-13 09:48:53,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 1376 transitions, 47498 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-06-13 09:48:53,691 INFO L241 Difference]: Finished difference. Result has 219 places, 1298 transitions, 45192 flow [2021-06-13 09:48:53,692 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=43080, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=992, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=45192, PETRI_PLACES=219, PETRI_TRANSITIONS=1298} [2021-06-13 09:48:53,692 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 164 predicate places. [2021-06-13 09:48:53,693 INFO L482 AbstractCegarLoop]: Abstraction has has 219 places, 1298 transitions, 45192 flow [2021-06-13 09:48:53,693 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) [2021-06-13 09:48:53,693 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:48:53,693 INFO L255 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] [2021-06-13 09:48:53,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-13 09:48:53,693 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:48:53,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:48:53,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1651189084, now seen corresponding path program 35 times [2021-06-13 09:48:53,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:48:53,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586464363] [2021-06-13 09:48:53,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:48:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:48:53,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:53,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:48:53,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:53,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:53,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:53,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:53,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:53,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:53,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:53,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:53,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:53,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:53,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:53,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:48:53,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:53,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:53,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:53,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:48:53,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:48:53,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:48:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:48:53,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:48:53,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586464363] [2021-06-13 09:48:53,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586464363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:48:53,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:48:53,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:48:53,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649617131] [2021-06-13 09:48:53,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:48:53,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:48:53,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:48:53,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:48:53,745 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:48:53,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 1298 transitions, 45192 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) [2021-06-13 09:48:53,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:48:53,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:48:53,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:48:59,450 INFO L129 PetriNetUnfolder]: 7839/18976 cut-off events. [2021-06-13 09:48:59,450 INFO L130 PetriNetUnfolder]: For 704316/710003 co-relation queries the response was YES. [2021-06-13 09:48:59,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166771 conditions, 18976 events. 7839/18976 cut-off events. For 704316/710003 co-relation queries the response was YES. Maximal size of possible extension queue 1472. Compared 219356 event pairs, 767 based on Foata normal form. 1249/19502 useless extension candidates. Maximal degree in co-relation 166065. Up to 4672 conditions per place. [2021-06-13 09:48:59,791 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 114 selfloop transitions, 1191 changer transitions 19/1351 dead transitions. [2021-06-13 09:48:59,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 1351 transitions, 48583 flow [2021-06-13 09:48:59,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:48:59,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:48:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-06-13 09:48:59,792 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-06-13 09:48:59,792 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-06-13 09:48:59,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-06-13 09:48:59,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:48:59,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-06-13 09:48:59,793 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) [2021-06-13 09:48:59,793 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) [2021-06-13 09:48:59,793 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) [2021-06-13 09:48:59,793 INFO L185 Difference]: Start difference. First operand has 219 places, 1298 transitions, 45192 flow. Second operand 9 states and 365 transitions. [2021-06-13 09:48:59,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 1351 transitions, 48583 flow [2021-06-13 09:49:02,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 1351 transitions, 48318 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-06-13 09:49:02,450 INFO L241 Difference]: Finished difference. Result has 224 places, 1292 transitions, 46969 flow [2021-06-13 09:49:02,451 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=44939, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46969, PETRI_PLACES=224, PETRI_TRANSITIONS=1292} [2021-06-13 09:49:02,451 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 169 predicate places. [2021-06-13 09:49:02,451 INFO L482 AbstractCegarLoop]: Abstraction has has 224 places, 1292 transitions, 46969 flow [2021-06-13 09:49:02,451 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) [2021-06-13 09:49:02,451 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:49:02,451 INFO L255 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] [2021-06-13 09:49:02,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-13 09:49:02,452 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:49:02,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:49:02,452 INFO L82 PathProgramCache]: Analyzing trace with hash 953393574, now seen corresponding path program 36 times [2021-06-13 09:49:02,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:49:02,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700313319] [2021-06-13 09:49:02,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:49:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:49:02,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:02,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:49:02,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:02,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:02,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:02,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:02,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:02,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:02,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:02,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:02,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:02,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:02,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:02,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:49:02,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:02,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:02,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:02,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:02,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:02,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:49:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:49:02,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:49:02,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700313319] [2021-06-13 09:49:02,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700313319] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:49:02,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:49:02,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:49:02,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355834780] [2021-06-13 09:49:02,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:49:02,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:49:02,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:49:02,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:49:02,492 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:49:02,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 1292 transitions, 46969 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) [2021-06-13 09:49:02,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:49:02,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:49:02,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:49:07,798 INFO L129 PetriNetUnfolder]: 7691/18629 cut-off events. [2021-06-13 09:49:07,798 INFO L130 PetriNetUnfolder]: For 754136/759957 co-relation queries the response was YES. [2021-06-13 09:49:07,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170394 conditions, 18629 events. 7691/18629 cut-off events. For 754136/759957 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 214420 event pairs, 752 based on Foata normal form. 1233/19165 useless extension candidates. Maximal degree in co-relation 169666. Up to 4588 conditions per place. [2021-06-13 09:49:08,006 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 112 selfloop transitions, 1201 changer transitions 10/1350 dead transitions. [2021-06-13 09:49:08,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 1350 transitions, 50523 flow [2021-06-13 09:49:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:49:08,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:49:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-06-13 09:49:08,008 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-06-13 09:49:08,008 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-06-13 09:49:08,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-06-13 09:49:08,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:49:08,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-06-13 09:49:08,009 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) [2021-06-13 09:49:08,009 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) [2021-06-13 09:49:08,009 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) [2021-06-13 09:49:08,009 INFO L185 Difference]: Start difference. First operand has 224 places, 1292 transitions, 46969 flow. Second operand 9 states and 365 transitions. [2021-06-13 09:49:08,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 1350 transitions, 50523 flow [2021-06-13 09:49:10,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 1350 transitions, 48398 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-13 09:49:10,767 INFO L241 Difference]: Finished difference. Result has 227 places, 1298 transitions, 47162 flow [2021-06-13 09:49:10,768 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=44873, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47162, PETRI_PLACES=227, PETRI_TRANSITIONS=1298} [2021-06-13 09:49:10,768 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 172 predicate places. [2021-06-13 09:49:10,768 INFO L482 AbstractCegarLoop]: Abstraction has has 227 places, 1298 transitions, 47162 flow [2021-06-13 09:49:10,768 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) [2021-06-13 09:49:10,768 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:49:10,768 INFO L255 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] [2021-06-13 09:49:10,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-13 09:49:10,768 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:49:10,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:49:10,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1575547516, now seen corresponding path program 37 times [2021-06-13 09:49:10,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:49:10,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890471057] [2021-06-13 09:49:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:49:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:49:10,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:10,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:49:10,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:10,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:10,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:10,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:10,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:10,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:10,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:10,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:10,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:10,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:10,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:10,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:10,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:10,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:10,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:10,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:10,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:10,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:49:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:49:10,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:49:10,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890471057] [2021-06-13 09:49:10,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890471057] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:49:10,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:49:10,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 09:49:10,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313379022] [2021-06-13 09:49:10,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 09:49:10,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:49:10,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 09:49:10,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-13 09:49:10,823 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:49:10,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 1298 transitions, 47162 flow. Second operand has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:10,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:49:10,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:49:10,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:49:16,567 INFO L129 PetriNetUnfolder]: 7586/18762 cut-off events. [2021-06-13 09:49:16,567 INFO L130 PetriNetUnfolder]: For 765614/770828 co-relation queries the response was YES. [2021-06-13 09:49:16,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169818 conditions, 18762 events. 7586/18762 cut-off events. For 765614/770828 co-relation queries the response was YES. Maximal size of possible extension queue 1482. Compared 219182 event pairs, 1536 based on Foata normal form. 1038/19139 useless extension candidates. Maximal degree in co-relation 169072. Up to 4874 conditions per place. [2021-06-13 09:49:16,775 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 316 selfloop transitions, 1022 changer transitions 19/1384 dead transitions. [2021-06-13 09:49:16,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 1384 transitions, 51346 flow [2021-06-13 09:49:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-13 09:49:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-13 09:49:16,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 671 transitions. [2021-06-13 09:49:16,776 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8580562659846548 [2021-06-13 09:49:16,776 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 671 transitions. [2021-06-13 09:49:16,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 671 transitions. [2021-06-13 09:49:16,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:49:16,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 671 transitions. [2021-06-13 09:49:16,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 39.470588235294116) internal successors, (671), 17 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:16,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:16,778 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:16,778 INFO L185 Difference]: Start difference. First operand has 227 places, 1298 transitions, 47162 flow. Second operand 17 states and 671 transitions. [2021-06-13 09:49:16,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 1384 transitions, 51346 flow [2021-06-13 09:49:19,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 1384 transitions, 50202 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-06-13 09:49:19,725 INFO L241 Difference]: Finished difference. Result has 239 places, 1299 transitions, 47848 flow [2021-06-13 09:49:19,726 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=46045, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1003, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=47848, PETRI_PLACES=239, PETRI_TRANSITIONS=1299} [2021-06-13 09:49:19,726 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 184 predicate places. [2021-06-13 09:49:19,726 INFO L482 AbstractCegarLoop]: Abstraction has has 239 places, 1299 transitions, 47848 flow [2021-06-13 09:49:19,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:19,726 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:49:19,726 INFO L255 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] [2021-06-13 09:49:19,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-13 09:49:19,726 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:49:19,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:49:19,727 INFO L82 PathProgramCache]: Analyzing trace with hash -876392676, now seen corresponding path program 38 times [2021-06-13 09:49:19,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:49:19,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75894915] [2021-06-13 09:49:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:49:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:49:19,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:19,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:49:19,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:19,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:19,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:19,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:19,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:19,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:19,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:19,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:19,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:19,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:19,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:19,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:19,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:19,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:19,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:19,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:19,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:19,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:49:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:49:19,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:49:19,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75894915] [2021-06-13 09:49:19,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75894915] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:49:19,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:49:19,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 09:49:19,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317362383] [2021-06-13 09:49:19,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 09:49:19,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:49:19,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 09:49:19,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-13 09:49:19,781 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:49:19,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 1299 transitions, 47848 flow. Second operand has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:19,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:49:19,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:49:19,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:49:25,364 INFO L129 PetriNetUnfolder]: 7085/18215 cut-off events. [2021-06-13 09:49:25,364 INFO L130 PetriNetUnfolder]: For 748531/753559 co-relation queries the response was YES. [2021-06-13 09:49:25,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167217 conditions, 18215 events. 7085/18215 cut-off events. For 748531/753559 co-relation queries the response was YES. Maximal size of possible extension queue 1535. Compared 217324 event pairs, 1455 based on Foata normal form. 1396/19026 useless extension candidates. Maximal degree in co-relation 166430. Up to 4863 conditions per place. [2021-06-13 09:49:25,566 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 314 selfloop transitions, 994 changer transitions 142/1477 dead transitions. [2021-06-13 09:49:25,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1477 transitions, 55550 flow [2021-06-13 09:49:25,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-13 09:49:25,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-13 09:49:25,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 675 transitions. [2021-06-13 09:49:25,573 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8631713554987213 [2021-06-13 09:49:25,573 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 675 transitions. [2021-06-13 09:49:25,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 675 transitions. [2021-06-13 09:49:25,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:49:25,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 675 transitions. [2021-06-13 09:49:25,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 39.705882352941174) internal successors, (675), 17 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:25,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:25,575 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:25,575 INFO L185 Difference]: Start difference. First operand has 239 places, 1299 transitions, 47848 flow. Second operand 17 states and 675 transitions. [2021-06-13 09:49:25,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1477 transitions, 55550 flow [2021-06-13 09:49:28,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 1477 transitions, 54169 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-06-13 09:49:28,507 INFO L241 Difference]: Finished difference. Result has 250 places, 1270 transitions, 46154 flow [2021-06-13 09:49:28,508 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=46277, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=896, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=46154, PETRI_PLACES=250, PETRI_TRANSITIONS=1270} [2021-06-13 09:49:28,509 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 195 predicate places. [2021-06-13 09:49:28,509 INFO L482 AbstractCegarLoop]: Abstraction has has 250 places, 1270 transitions, 46154 flow [2021-06-13 09:49:28,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:28,509 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:49:28,509 INFO L255 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] [2021-06-13 09:49:28,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-13 09:49:28,509 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:49:28,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:49:28,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1189759194, now seen corresponding path program 39 times [2021-06-13 09:49:28,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:49:28,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917677484] [2021-06-13 09:49:28,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:49:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:49:28,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:28,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:49:28,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:28,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:28,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:28,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:28,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:28,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:28,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:28,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:49:28,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:28,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:28,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:28,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:28,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:28,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:28,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:28,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:49:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:49:28,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:49:28,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917677484] [2021-06-13 09:49:28,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917677484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:49:28,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:49:28,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 09:49:28,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368679229] [2021-06-13 09:49:28,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 09:49:28,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:49:28,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 09:49:28,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-13 09:49:28,539 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:49:28,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 1270 transitions, 46154 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) [2021-06-13 09:49:28,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:49:28,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:49:28,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:49:33,429 INFO L129 PetriNetUnfolder]: 6382/16492 cut-off events. [2021-06-13 09:49:33,429 INFO L130 PetriNetUnfolder]: For 751548/756996 co-relation queries the response was YES. [2021-06-13 09:49:33,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157848 conditions, 16492 events. 6382/16492 cut-off events. For 751548/756996 co-relation queries the response was YES. Maximal size of possible extension queue 1404. Compared 195220 event pairs, 820 based on Foata normal form. 911/16851 useless extension candidates. Maximal degree in co-relation 157120. Up to 4087 conditions per place. [2021-06-13 09:49:33,634 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 203 selfloop transitions, 1100 changer transitions 4/1334 dead transitions. [2021-06-13 09:49:33,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 1334 transitions, 49986 flow [2021-06-13 09:49:33,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 09:49:33,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 09:49:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 281 transitions. [2021-06-13 09:49:33,635 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8726708074534162 [2021-06-13 09:49:33,635 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 281 transitions. [2021-06-13 09:49:33,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 281 transitions. [2021-06-13 09:49:33,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:49:33,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 281 transitions. [2021-06-13 09:49:33,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:33,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:33,636 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:33,636 INFO L185 Difference]: Start difference. First operand has 250 places, 1270 transitions, 46154 flow. Second operand 7 states and 281 transitions. [2021-06-13 09:49:33,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 1334 transitions, 49986 flow [2021-06-13 09:49:36,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 1334 transitions, 49949 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 09:49:36,228 INFO L241 Difference]: Finished difference. Result has 255 places, 1297 transitions, 48977 flow [2021-06-13 09:49:36,229 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=46117, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1072, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=48977, PETRI_PLACES=255, PETRI_TRANSITIONS=1297} [2021-06-13 09:49:36,229 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 200 predicate places. [2021-06-13 09:49:36,229 INFO L482 AbstractCegarLoop]: Abstraction has has 255 places, 1297 transitions, 48977 flow [2021-06-13 09:49:36,229 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) [2021-06-13 09:49:36,229 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:49:36,229 INFO L255 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] [2021-06-13 09:49:36,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-13 09:49:36,230 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:49:36,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:49:36,230 INFO L82 PathProgramCache]: Analyzing trace with hash 622594066, now seen corresponding path program 40 times [2021-06-13 09:49:36,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:49:36,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78454687] [2021-06-13 09:49:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:49:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:49:36,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:36,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:49:36,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:36,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:36,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:36,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:36,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:36,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:36,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:36,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:49:36,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:36,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:36,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:36,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:36,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:36,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:36,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:36,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:36,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:36,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:49:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:49:36,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:49:36,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78454687] [2021-06-13 09:49:36,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78454687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:49:36,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:49:36,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:49:36,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857964188] [2021-06-13 09:49:36,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:49:36,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:49:36,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:49:36,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:49:36,271 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:49:36,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 1297 transitions, 48977 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) [2021-06-13 09:49:36,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:49:36,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:49:36,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:49:40,980 INFO L129 PetriNetUnfolder]: 5510/15130 cut-off events. [2021-06-13 09:49:40,981 INFO L130 PetriNetUnfolder]: For 803681/807856 co-relation queries the response was YES. [2021-06-13 09:49:41,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154619 conditions, 15130 events. 5510/15130 cut-off events. For 803681/807856 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 182137 event pairs, 645 based on Foata normal form. 1156/15866 useless extension candidates. Maximal degree in co-relation 153884. Up to 3141 conditions per place. [2021-06-13 09:49:41,158 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 219 selfloop transitions, 1119 changer transitions 26/1391 dead transitions. [2021-06-13 09:49:41,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1391 transitions, 53423 flow [2021-06-13 09:49:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:49:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:49:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 364 transitions. [2021-06-13 09:49:41,159 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8792270531400966 [2021-06-13 09:49:41,159 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 364 transitions. [2021-06-13 09:49:41,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 364 transitions. [2021-06-13 09:49:41,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:49:41,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 364 transitions. [2021-06-13 09:49:41,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.44444444444444) internal successors, (364), 9 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:41,160 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) [2021-06-13 09:49:41,160 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) [2021-06-13 09:49:41,160 INFO L185 Difference]: Start difference. First operand has 255 places, 1297 transitions, 48977 flow. Second operand 9 states and 364 transitions. [2021-06-13 09:49:41,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1391 transitions, 53423 flow [2021-06-13 09:49:43,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1391 transitions, 51850 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-06-13 09:49:43,796 INFO L241 Difference]: Finished difference. Result has 260 places, 1314 transitions, 49903 flow [2021-06-13 09:49:43,797 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=47318, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1074, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49903, PETRI_PLACES=260, PETRI_TRANSITIONS=1314} [2021-06-13 09:49:43,797 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 205 predicate places. [2021-06-13 09:49:43,797 INFO L482 AbstractCegarLoop]: Abstraction has has 260 places, 1314 transitions, 49903 flow [2021-06-13 09:49:43,797 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) [2021-06-13 09:49:43,797 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:49:43,797 INFO L255 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] [2021-06-13 09:49:43,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-13 09:49:43,797 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:49:43,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:49:43,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1566613790, now seen corresponding path program 41 times [2021-06-13 09:49:43,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:49:43,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32636233] [2021-06-13 09:49:43,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:49:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:49:43,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:43,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:49:43,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:43,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:43,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:43,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:43,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:43,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:43,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:43,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:43,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:43,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:43,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:43,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:49:43,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:43,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:43,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:43,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:43,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:43,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:49:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:49:43,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:49:43,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32636233] [2021-06-13 09:49:43,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32636233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:49:43,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:49:43,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:49:43,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296962717] [2021-06-13 09:49:43,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:49:43,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:49:43,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:49:43,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:49:43,830 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:49:43,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 1314 transitions, 49903 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) [2021-06-13 09:49:43,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:49:43,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:49:43,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:49:48,594 INFO L129 PetriNetUnfolder]: 5370/14724 cut-off events. [2021-06-13 09:49:48,594 INFO L130 PetriNetUnfolder]: For 790951/795327 co-relation queries the response was YES. [2021-06-13 09:49:48,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151173 conditions, 14724 events. 5370/14724 cut-off events. For 790951/795327 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 176565 event pairs, 504 based on Foata normal form. 915/15205 useless extension candidates. Maximal degree in co-relation 150433. Up to 3501 conditions per place. [2021-06-13 09:49:48,770 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 105 selfloop transitions, 1229 changer transitions 19/1380 dead transitions. [2021-06-13 09:49:48,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 1380 transitions, 54314 flow [2021-06-13 09:49:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:49:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:49:48,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 363 transitions. [2021-06-13 09:49:48,772 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8768115942028986 [2021-06-13 09:49:48,772 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 363 transitions. [2021-06-13 09:49:48,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 363 transitions. [2021-06-13 09:49:48,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:49:48,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 363 transitions. [2021-06-13 09:49:48,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.333333333333336) internal successors, (363), 9 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:48,773 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) [2021-06-13 09:49:48,773 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) [2021-06-13 09:49:48,773 INFO L185 Difference]: Start difference. First operand has 260 places, 1314 transitions, 49903 flow. Second operand 9 states and 363 transitions. [2021-06-13 09:49:48,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 1380 transitions, 54314 flow [2021-06-13 09:49:51,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 1380 transitions, 52903 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-06-13 09:49:51,346 INFO L241 Difference]: Finished difference. Result has 263 places, 1322 transitions, 51170 flow [2021-06-13 09:49:51,347 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=48534, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51170, PETRI_PLACES=263, PETRI_TRANSITIONS=1322} [2021-06-13 09:49:51,347 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 208 predicate places. [2021-06-13 09:49:51,347 INFO L482 AbstractCegarLoop]: Abstraction has has 263 places, 1322 transitions, 51170 flow [2021-06-13 09:49:51,347 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) [2021-06-13 09:49:51,347 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:49:51,347 INFO L255 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] [2021-06-13 09:49:51,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-13 09:49:51,347 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:49:51,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:49:51,348 INFO L82 PathProgramCache]: Analyzing trace with hash 589307768, now seen corresponding path program 42 times [2021-06-13 09:49:51,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:49:51,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194947950] [2021-06-13 09:49:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:49:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:49:51,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:51,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:49:51,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:51,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:51,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:51,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:49:51,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:51,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:51,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:51,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:51,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:51,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:51,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:51,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:51,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:51,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:51,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:51,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:51,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:51,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:49:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:49:51,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:49:51,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194947950] [2021-06-13 09:49:51,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194947950] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:49:51,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:49:51,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 09:49:51,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844527485] [2021-06-13 09:49:51,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 09:49:51,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:49:51,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 09:49:51,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-13 09:49:51,392 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:49:51,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 1322 transitions, 51170 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) [2021-06-13 09:49:51,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:49:51,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:49:51,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:49:56,161 INFO L129 PetriNetUnfolder]: 5349/14706 cut-off events. [2021-06-13 09:49:56,161 INFO L130 PetriNetUnfolder]: For 794707/798280 co-relation queries the response was YES. [2021-06-13 09:49:56,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151066 conditions, 14706 events. 5349/14706 cut-off events. For 794707/798280 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 176700 event pairs, 496 based on Foata normal form. 797/15067 useless extension candidates. Maximal degree in co-relation 150325. Up to 3031 conditions per place. [2021-06-13 09:49:56,315 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 131 selfloop transitions, 1213 changer transitions 71/1442 dead transitions. [2021-06-13 09:49:56,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 1442 transitions, 56397 flow [2021-06-13 09:49:56,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 09:49:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 09:49:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 522 transitions. [2021-06-13 09:49:56,325 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8729096989966555 [2021-06-13 09:49:56,325 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 522 transitions. [2021-06-13 09:49:56,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 522 transitions. [2021-06-13 09:49:56,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:49:56,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 522 transitions. [2021-06-13 09:49:56,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.15384615384615) internal successors, (522), 13 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:49:56,327 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) [2021-06-13 09:49:56,327 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) [2021-06-13 09:49:56,327 INFO L185 Difference]: Start difference. First operand has 263 places, 1322 transitions, 51170 flow. Second operand 13 states and 522 transitions. [2021-06-13 09:49:56,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 1442 transitions, 56397 flow [2021-06-13 09:49:58,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 1442 transitions, 55563 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-13 09:49:58,853 INFO L241 Difference]: Finished difference. Result has 272 places, 1312 transitions, 52773 flow [2021-06-13 09:49:58,854 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=50374, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=52773, PETRI_PLACES=272, PETRI_TRANSITIONS=1312} [2021-06-13 09:49:58,854 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 217 predicate places. [2021-06-13 09:49:58,854 INFO L482 AbstractCegarLoop]: Abstraction has has 272 places, 1312 transitions, 52773 flow [2021-06-13 09:49:58,854 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) [2021-06-13 09:49:58,854 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:49:58,854 INFO L255 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] [2021-06-13 09:49:58,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-13 09:49:58,854 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:49:58,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:49:58,855 INFO L82 PathProgramCache]: Analyzing trace with hash -237098450, now seen corresponding path program 43 times [2021-06-13 09:49:58,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:49:58,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74921653] [2021-06-13 09:49:58,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:49:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:49:58,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:58,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:49:58,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:58,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:58,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:58,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:49:58,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:58,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:58,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:58,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:58,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:58,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:58,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:58,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:58,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:58,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:58,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:58,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:49:58,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:49:58,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:49:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:49:58,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:49:58,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74921653] [2021-06-13 09:49:58,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74921653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:49:58,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:49:58,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 09:49:58,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130219136] [2021-06-13 09:49:58,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 09:49:58,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:49:58,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 09:49:58,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-13 09:49:58,912 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:49:58,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 1312 transitions, 52773 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) [2021-06-13 09:49:58,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:49:58,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:49:58,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:50:04,359 INFO L129 PetriNetUnfolder]: 5225/14606 cut-off events. [2021-06-13 09:50:04,359 INFO L130 PetriNetUnfolder]: For 860885/864363 co-relation queries the response was YES. [2021-06-13 09:50:04,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155159 conditions, 14606 events. 5225/14606 cut-off events. For 860885/864363 co-relation queries the response was YES. Maximal size of possible extension queue 1295. Compared 176810 event pairs, 464 based on Foata normal form. 888/15055 useless extension candidates. Maximal degree in co-relation 154404. Up to 2994 conditions per place. [2021-06-13 09:50:04,561 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 125 selfloop transitions, 1229 changer transitions 26/1407 dead transitions. [2021-06-13 09:50:04,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1407 transitions, 57329 flow [2021-06-13 09:50:04,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 09:50:04,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 09:50:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 525 transitions. [2021-06-13 09:50:04,563 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8779264214046822 [2021-06-13 09:50:04,563 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 525 transitions. [2021-06-13 09:50:04,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 525 transitions. [2021-06-13 09:50:04,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:50:04,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 525 transitions. [2021-06-13 09:50:04,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.38461538461539) internal successors, (525), 13 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:04,565 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) [2021-06-13 09:50:04,565 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) [2021-06-13 09:50:04,565 INFO L185 Difference]: Start difference. First operand has 272 places, 1312 transitions, 52773 flow. Second operand 13 states and 525 transitions. [2021-06-13 09:50:04,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1407 transitions, 57329 flow [2021-06-13 09:50:07,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 1407 transitions, 56562 flow, removed 22 selfloop flow, removed 6 redundant places. [2021-06-13 09:50:07,931 INFO L241 Difference]: Finished difference. Result has 280 places, 1322 transitions, 54922 flow [2021-06-13 09:50:07,933 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=52066, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=54922, PETRI_PLACES=280, PETRI_TRANSITIONS=1322} [2021-06-13 09:50:07,933 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 225 predicate places. [2021-06-13 09:50:07,933 INFO L482 AbstractCegarLoop]: Abstraction has has 280 places, 1322 transitions, 54922 flow [2021-06-13 09:50:07,933 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) [2021-06-13 09:50:07,933 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:50:07,933 INFO L255 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] [2021-06-13 09:50:07,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-13 09:50:07,933 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:50:07,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:50:07,934 INFO L82 PathProgramCache]: Analyzing trace with hash -581030050, now seen corresponding path program 44 times [2021-06-13 09:50:07,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:50:07,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092854437] [2021-06-13 09:50:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:50:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:50:07,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:07,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:50:07,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:07,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:07,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:07,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:50:07,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:07,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:07,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:07,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:07,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:07,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:07,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:07,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:07,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:07,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:07,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:07,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:07,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:07,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:50:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:50:07,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:50:07,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092854437] [2021-06-13 09:50:07,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092854437] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:50:07,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:50:07,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 09:50:07,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434143261] [2021-06-13 09:50:07,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 09:50:07,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:50:07,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 09:50:07,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-13 09:50:07,983 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:50:07,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 1322 transitions, 54922 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) [2021-06-13 09:50:07,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:50:07,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:50:07,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:50:13,614 INFO L129 PetriNetUnfolder]: 5206/14720 cut-off events. [2021-06-13 09:50:13,614 INFO L130 PetriNetUnfolder]: For 919582/922845 co-relation queries the response was YES. [2021-06-13 09:50:13,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158397 conditions, 14720 events. 5206/14720 cut-off events. For 919582/922845 co-relation queries the response was YES. Maximal size of possible extension queue 1273. Compared 179352 event pairs, 486 based on Foata normal form. 928/15217 useless extension candidates. Maximal degree in co-relation 157610. Up to 2997 conditions per place. [2021-06-13 09:50:13,797 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 125 selfloop transitions, 1237 changer transitions 28/1417 dead transitions. [2021-06-13 09:50:13,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 1417 transitions, 59515 flow [2021-06-13 09:50:13,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 09:50:13,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 09:50:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 525 transitions. [2021-06-13 09:50:13,798 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8779264214046822 [2021-06-13 09:50:13,798 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 525 transitions. [2021-06-13 09:50:13,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 525 transitions. [2021-06-13 09:50:13,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:50:13,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 525 transitions. [2021-06-13 09:50:13,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.38461538461539) internal successors, (525), 13 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:13,800 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) [2021-06-13 09:50:13,800 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) [2021-06-13 09:50:13,800 INFO L185 Difference]: Start difference. First operand has 280 places, 1322 transitions, 54922 flow. Second operand 13 states and 525 transitions. [2021-06-13 09:50:13,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 1417 transitions, 59515 flow [2021-06-13 09:50:17,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 1417 transitions, 59061 flow, removed 22 selfloop flow, removed 5 redundant places. [2021-06-13 09:50:17,632 INFO L241 Difference]: Finished difference. Result has 289 places, 1330 transitions, 57338 flow [2021-06-13 09:50:17,633 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=54516, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=57338, PETRI_PLACES=289, PETRI_TRANSITIONS=1330} [2021-06-13 09:50:17,633 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 234 predicate places. [2021-06-13 09:50:17,633 INFO L482 AbstractCegarLoop]: Abstraction has has 289 places, 1330 transitions, 57338 flow [2021-06-13 09:50:17,633 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) [2021-06-13 09:50:17,633 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:50:17,634 INFO L255 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] [2021-06-13 09:50:17,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-13 09:50:17,634 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:50:17,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:50:17,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1948055606, now seen corresponding path program 45 times [2021-06-13 09:50:17,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:50:17,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572658553] [2021-06-13 09:50:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:50:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:50:17,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:17,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:50:17,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:17,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:17,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:17,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:50:17,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:17,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:17,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:17,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:17,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:17,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:17,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:17,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:17,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:17,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:17,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:17,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:17,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:17,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:50:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:50:17,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:50:17,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572658553] [2021-06-13 09:50:17,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572658553] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:50:17,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:50:17,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 09:50:17,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71033362] [2021-06-13 09:50:17,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 09:50:17,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:50:17,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 09:50:17,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-13 09:50:17,705 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:50:17,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 1330 transitions, 57338 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) [2021-06-13 09:50:17,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:50:17,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:50:17,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:50:23,256 INFO L129 PetriNetUnfolder]: 5185/14713 cut-off events. [2021-06-13 09:50:23,256 INFO L130 PetriNetUnfolder]: For 988908/992597 co-relation queries the response was YES. [2021-06-13 09:50:23,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163273 conditions, 14713 events. 5185/14713 cut-off events. For 988908/992597 co-relation queries the response was YES. Maximal size of possible extension queue 1276. Compared 179857 event pairs, 478 based on Foata normal form. 812/15082 useless extension candidates. Maximal degree in co-relation 162492. Up to 2989 conditions per place. [2021-06-13 09:50:23,454 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 120 selfloop transitions, 1229 changer transitions 34/1410 dead transitions. [2021-06-13 09:50:23,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 1410 transitions, 61706 flow [2021-06-13 09:50:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 09:50:23,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 09:50:23,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 525 transitions. [2021-06-13 09:50:23,455 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8779264214046822 [2021-06-13 09:50:23,456 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 525 transitions. [2021-06-13 09:50:23,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 525 transitions. [2021-06-13 09:50:23,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:50:23,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 525 transitions. [2021-06-13 09:50:23,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.38461538461539) internal successors, (525), 13 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:23,457 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) [2021-06-13 09:50:23,457 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) [2021-06-13 09:50:23,457 INFO L185 Difference]: Start difference. First operand has 289 places, 1330 transitions, 57338 flow. Second operand 13 states and 525 transitions. [2021-06-13 09:50:23,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 1410 transitions, 61706 flow [2021-06-13 09:50:26,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 1410 transitions, 61418 flow, removed 22 selfloop flow, removed 5 redundant places. [2021-06-13 09:50:26,945 INFO L241 Difference]: Finished difference. Result has 298 places, 1322 transitions, 59502 flow [2021-06-13 09:50:26,946 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=57094, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=59502, PETRI_PLACES=298, PETRI_TRANSITIONS=1322} [2021-06-13 09:50:26,946 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 243 predicate places. [2021-06-13 09:50:26,946 INFO L482 AbstractCegarLoop]: Abstraction has has 298 places, 1322 transitions, 59502 flow [2021-06-13 09:50:26,946 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) [2021-06-13 09:50:26,947 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:50:26,947 INFO L255 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] [2021-06-13 09:50:26,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-13 09:50:26,947 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:50:26,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:50:26,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1031597596, now seen corresponding path program 46 times [2021-06-13 09:50:26,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:50:26,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148158732] [2021-06-13 09:50:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:50:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:50:26,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:26,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:50:26,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:26,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:26,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:26,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:26,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:26,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:26,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:26,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:26,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:26,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:26,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:26,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:26,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:26,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:27,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:27,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:50:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:50:27,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:50:27,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148158732] [2021-06-13 09:50:27,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148158732] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:50:27,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:50:27,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 09:50:27,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81387106] [2021-06-13 09:50:27,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 09:50:27,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:50:27,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 09:50:27,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-13 09:50:27,004 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:50:27,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 1322 transitions, 59502 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) [2021-06-13 09:50:27,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:50:27,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:50:27,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:50:30,465 INFO L129 PetriNetUnfolder]: 2639/8848 cut-off events. [2021-06-13 09:50:30,466 INFO L130 PetriNetUnfolder]: For 506613/509564 co-relation queries the response was YES. [2021-06-13 09:50:30,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103127 conditions, 8848 events. 2639/8848 cut-off events. For 506613/509564 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 107973 event pairs, 739 based on Foata normal form. 961/9692 useless extension candidates. Maximal degree in co-relation 102574. Up to 2751 conditions per place. [2021-06-13 09:50:30,555 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 356 selfloop transitions, 620 changer transitions 161/1164 dead transitions. [2021-06-13 09:50:30,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 1164 transitions, 51354 flow [2021-06-13 09:50:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 09:50:30,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 09:50:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 507 transitions. [2021-06-13 09:50:30,556 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2021-06-13 09:50:30,556 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 507 transitions. [2021-06-13 09:50:30,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 507 transitions. [2021-06-13 09:50:30,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:50:30,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 507 transitions. [2021-06-13 09:50:30,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 39.0) internal successors, (507), 13 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:30,557 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) [2021-06-13 09:50:30,557 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) [2021-06-13 09:50:30,557 INFO L185 Difference]: Start difference. First operand has 298 places, 1322 transitions, 59502 flow. Second operand 13 states and 507 transitions. [2021-06-13 09:50:30,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 1164 transitions, 51354 flow [2021-06-13 09:50:32,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 1164 transitions, 50905 flow, removed 34 selfloop flow, removed 6 redundant places. [2021-06-13 09:50:32,716 INFO L241 Difference]: Finished difference. Result has 309 places, 962 transitions, 40224 flow [2021-06-13 09:50:32,717 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=47047, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=611, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=40224, PETRI_PLACES=309, PETRI_TRANSITIONS=962} [2021-06-13 09:50:32,717 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 254 predicate places. [2021-06-13 09:50:32,717 INFO L482 AbstractCegarLoop]: Abstraction has has 309 places, 962 transitions, 40224 flow [2021-06-13 09:50:32,718 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) [2021-06-13 09:50:32,718 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:50:32,718 INFO L255 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] [2021-06-13 09:50:32,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-13 09:50:32,718 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:50:32,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:50:32,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1669350216, now seen corresponding path program 47 times [2021-06-13 09:50:32,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:50:32,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622061485] [2021-06-13 09:50:32,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:50:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:50:32,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:32,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:50:32,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:32,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:32,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:32,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:32,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:32,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:32,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:32,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:32,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:32,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:32,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:32,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:32,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:32,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:50:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:50:32,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:50:32,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622061485] [2021-06-13 09:50:32,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622061485] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:50:32,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:50:32,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:50:32,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635764758] [2021-06-13 09:50:32,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 09:50:32,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:50:32,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 09:50:32,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-13 09:50:32,744 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:50:32,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 962 transitions, 40224 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) [2021-06-13 09:50:32,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:50:32,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:50:32,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:50:34,821 INFO L129 PetriNetUnfolder]: 2136/7058 cut-off events. [2021-06-13 09:50:34,821 INFO L130 PetriNetUnfolder]: For 374846/376908 co-relation queries the response was YES. [2021-06-13 09:50:35,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77508 conditions, 7058 events. 2136/7058 cut-off events. For 374846/376908 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 82226 event pairs, 796 based on Foata normal form. 385/7358 useless extension candidates. Maximal degree in co-relation 77069. Up to 3551 conditions per place. [2021-06-13 09:50:35,037 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 541 selfloop transitions, 315 changer transitions 23/906 dead transitions. [2021-06-13 09:50:35,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 906 transitions, 37858 flow [2021-06-13 09:50:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 09:50:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-13 09:50:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2021-06-13 09:50:35,038 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2021-06-13 09:50:35,038 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 234 transitions. [2021-06-13 09:50:35,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 234 transitions. [2021-06-13 09:50:35,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:50:35,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 234 transitions. [2021-06-13 09:50:35,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:35,038 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) [2021-06-13 09:50:35,039 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) [2021-06-13 09:50:35,039 INFO L185 Difference]: Start difference. First operand has 309 places, 962 transitions, 40224 flow. Second operand 6 states and 234 transitions. [2021-06-13 09:50:35,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 906 transitions, 37858 flow [2021-06-13 09:50:36,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 906 transitions, 37178 flow, removed 1 selfloop flow, removed 8 redundant places. [2021-06-13 09:50:36,138 INFO L241 Difference]: Finished difference. Result has 307 places, 870 transitions, 34796 flow [2021-06-13 09:50:36,139 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=34956, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=886, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=34796, PETRI_PLACES=307, PETRI_TRANSITIONS=870} [2021-06-13 09:50:36,139 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 252 predicate places. [2021-06-13 09:50:36,139 INFO L482 AbstractCegarLoop]: Abstraction has has 307 places, 870 transitions, 34796 flow [2021-06-13 09:50:36,139 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) [2021-06-13 09:50:36,139 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:50:36,139 INFO L255 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] [2021-06-13 09:50:36,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-13 09:50:36,139 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:50:36,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:50:36,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1386652842, now seen corresponding path program 48 times [2021-06-13 09:50:36,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:50:36,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606852633] [2021-06-13 09:50:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:50:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:50:36,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:36,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:50:36,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:36,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:36,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:36,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:36,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:36,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:36,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:36,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:36,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:36,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:36,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:36,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:36,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:36,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:36,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:36,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:36,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:36,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:50:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:50:36,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:50:36,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606852633] [2021-06-13 09:50:36,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606852633] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:50:36,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:50:36,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 09:50:36,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418576124] [2021-06-13 09:50:36,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 09:50:36,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:50:36,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 09:50:36,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-13 09:50:36,169 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:50:36,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 870 transitions, 34796 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) [2021-06-13 09:50:36,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:50:36,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:50:36,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:50:37,940 INFO L129 PetriNetUnfolder]: 1792/5724 cut-off events. [2021-06-13 09:50:37,940 INFO L130 PetriNetUnfolder]: For 283246/284252 co-relation queries the response was YES. [2021-06-13 09:50:37,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60256 conditions, 5724 events. 1792/5724 cut-off events. For 283246/284252 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 62820 event pairs, 751 based on Foata normal form. 124/5759 useless extension candidates. Maximal degree in co-relation 59940. Up to 3116 conditions per place. [2021-06-13 09:50:38,020 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 445 selfloop transitions, 198 changer transitions 50/720 dead transitions. [2021-06-13 09:50:38,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 720 transitions, 28667 flow [2021-06-13 09:50:38,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 09:50:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 09:50:38,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 312 transitions. [2021-06-13 09:50:38,022 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2021-06-13 09:50:38,022 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 312 transitions. [2021-06-13 09:50:38,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 312 transitions. [2021-06-13 09:50:38,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:50:38,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 312 transitions. [2021-06-13 09:50:38,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:38,023 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) [2021-06-13 09:50:38,023 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) [2021-06-13 09:50:38,023 INFO L185 Difference]: Start difference. First operand has 307 places, 870 transitions, 34796 flow. Second operand 8 states and 312 transitions. [2021-06-13 09:50:38,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 720 transitions, 28667 flow [2021-06-13 09:50:38,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 720 transitions, 28044 flow, removed 19 selfloop flow, removed 9 redundant places. [2021-06-13 09:50:38,934 INFO L241 Difference]: Finished difference. Result has 307 places, 651 transitions, 23931 flow [2021-06-13 09:50:38,935 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=25960, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23931, PETRI_PLACES=307, PETRI_TRANSITIONS=651} [2021-06-13 09:50:38,935 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 252 predicate places. [2021-06-13 09:50:38,935 INFO L482 AbstractCegarLoop]: Abstraction has has 307 places, 651 transitions, 23931 flow [2021-06-13 09:50:38,935 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) [2021-06-13 09:50:38,935 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:50:38,936 INFO L255 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] [2021-06-13 09:50:38,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-13 09:50:38,936 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:50:38,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:50:38,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1316855318, now seen corresponding path program 49 times [2021-06-13 09:50:38,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:50:38,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948351947] [2021-06-13 09:50:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:50:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:50:38,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:38,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:50:38,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:38,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:38,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:38,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:38,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:38,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:38,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:38,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:39,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:39,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:39,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:39,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:39,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:39,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:39,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:39,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:39,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:39,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:50:39,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:50:39,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:50:39,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948351947] [2021-06-13 09:50:39,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948351947] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:50:39,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:50:39,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 09:50:39,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340488436] [2021-06-13 09:50:39,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 09:50:39,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:50:39,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 09:50:39,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-13 09:50:39,037 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:50:39,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 651 transitions, 23931 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) [2021-06-13 09:50:39,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:50:39,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:50:39,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:50:40,793 INFO L129 PetriNetUnfolder]: 1539/4771 cut-off events. [2021-06-13 09:50:40,794 INFO L130 PetriNetUnfolder]: For 214320/214866 co-relation queries the response was YES. [2021-06-13 09:50:40,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48401 conditions, 4771 events. 1539/4771 cut-off events. For 214320/214866 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 50409 event pairs, 651 based on Foata normal form. 84/4779 useless extension candidates. Maximal degree in co-relation 48158. Up to 2607 conditions per place. [2021-06-13 09:50:40,840 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 320 selfloop transitions, 73 changer transitions 160/580 dead transitions. [2021-06-13 09:50:40,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 580 transitions, 22271 flow [2021-06-13 09:50:40,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-13 09:50:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-13 09:50:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 446 transitions. [2021-06-13 09:50:40,841 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8079710144927537 [2021-06-13 09:50:40,841 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 446 transitions. [2021-06-13 09:50:40,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 446 transitions. [2021-06-13 09:50:40,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:50:40,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 446 transitions. [2021-06-13 09:50:40,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 37.166666666666664) internal successors, (446), 12 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:40,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:40,843 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:40,843 INFO L185 Difference]: Start difference. First operand has 307 places, 651 transitions, 23931 flow. Second operand 12 states and 446 transitions. [2021-06-13 09:50:40,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 580 transitions, 22271 flow [2021-06-13 09:50:41,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 580 transitions, 21637 flow, removed 120 selfloop flow, removed 20 redundant places. [2021-06-13 09:50:41,514 INFO L241 Difference]: Finished difference. Result has 296 places, 397 transitions, 11435 flow [2021-06-13 09:50:41,515 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=20031, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11435, PETRI_PLACES=296, PETRI_TRANSITIONS=397} [2021-06-13 09:50:41,515 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 241 predicate places. [2021-06-13 09:50:41,515 INFO L482 AbstractCegarLoop]: Abstraction has has 296 places, 397 transitions, 11435 flow [2021-06-13 09:50:41,515 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) [2021-06-13 09:50:41,515 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:50:41,516 INFO L255 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] [2021-06-13 09:50:41,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-13 09:50:41,516 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:50:41,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:50:41,516 INFO L82 PathProgramCache]: Analyzing trace with hash 263436468, now seen corresponding path program 50 times [2021-06-13 09:50:41,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:50:41,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488175825] [2021-06-13 09:50:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:50:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:50:41,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:41,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:50:41,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:41,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:41,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:41,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:41,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:41,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:41,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:41,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:41,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:41,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:41,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:41,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:50:41,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:41,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:41,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:41,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:41,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:41,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:50:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:50:41,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:50:41,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488175825] [2021-06-13 09:50:41,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488175825] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:50:41,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:50:41,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 09:50:41,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875235895] [2021-06-13 09:50:41,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 09:50:41,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:50:41,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 09:50:41,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-13 09:50:41,545 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:50:41,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 397 transitions, 11435 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) [2021-06-13 09:50:41,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:50:41,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:50:41,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:50:41,977 INFO L129 PetriNetUnfolder]: 367/1393 cut-off events. [2021-06-13 09:50:41,977 INFO L130 PetriNetUnfolder]: For 49624/49812 co-relation queries the response was YES. [2021-06-13 09:50:41,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13118 conditions, 1393 events. 367/1393 cut-off events. For 49624/49812 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11452 event pairs, 27 based on Foata normal form. 252/1635 useless extension candidates. Maximal degree in co-relation 12978. Up to 556 conditions per place. [2021-06-13 09:50:41,988 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 65 selfloop transitions, 154 changer transitions 38/284 dead transitions. [2021-06-13 09:50:41,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 284 transitions, 8397 flow [2021-06-13 09:50:41,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 09:50:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 09:50:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 278 transitions. [2021-06-13 09:50:41,990 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8633540372670807 [2021-06-13 09:50:41,990 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 278 transitions. [2021-06-13 09:50:41,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 278 transitions. [2021-06-13 09:50:41,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:50:41,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 278 transitions. [2021-06-13 09:50:41,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 39.714285714285715) internal successors, (278), 7 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:41,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:41,991 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:41,991 INFO L185 Difference]: Start difference. First operand has 296 places, 397 transitions, 11435 flow. Second operand 7 states and 278 transitions. [2021-06-13 09:50:41,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 284 transitions, 8397 flow [2021-06-13 09:50:42,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 284 transitions, 6790 flow, removed 94 selfloop flow, removed 69 redundant places. [2021-06-13 09:50:42,103 INFO L241 Difference]: Finished difference. Result has 211 places, 228 transitions, 5353 flow [2021-06-13 09:50:42,104 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5670, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5353, PETRI_PLACES=211, PETRI_TRANSITIONS=228} [2021-06-13 09:50:42,104 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 156 predicate places. [2021-06-13 09:50:42,104 INFO L482 AbstractCegarLoop]: Abstraction has has 211 places, 228 transitions, 5353 flow [2021-06-13 09:50:42,104 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) [2021-06-13 09:50:42,104 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:50:42,104 INFO L255 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] [2021-06-13 09:50:42,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-13 09:50:42,104 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:50:42,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:50:42,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1328475562, now seen corresponding path program 51 times [2021-06-13 09:50:42,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:50:42,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193647038] [2021-06-13 09:50:42,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:50:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:50:42,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:50:42,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:50:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:50:42,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:50:42,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193647038] [2021-06-13 09:50:42,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193647038] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:50:42,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:50:42,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 09:50:42,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838551970] [2021-06-13 09:50:42,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 09:50:42,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:50:42,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 09:50:42,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-13 09:50:42,164 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:50:42,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 228 transitions, 5353 flow. Second operand has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:42,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:50:42,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:50:42,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:50:42,438 INFO L129 PetriNetUnfolder]: 258/1050 cut-off events. [2021-06-13 09:50:42,438 INFO L130 PetriNetUnfolder]: For 27707/27837 co-relation queries the response was YES. [2021-06-13 09:50:42,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7777 conditions, 1050 events. 258/1050 cut-off events. For 27707/27837 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8118 event pairs, 115 based on Foata normal form. 9/1052 useless extension candidates. Maximal degree in co-relation 7664. Up to 548 conditions per place. [2021-06-13 09:50:42,445 INFO L132 encePairwiseOnDemand]: 36/46 looper letters, 144 selfloop transitions, 40 changer transitions 35/246 dead transitions. [2021-06-13 09:50:42,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 246 transitions, 6063 flow [2021-06-13 09:50:42,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 09:50:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 09:50:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 387 transitions. [2021-06-13 09:50:42,446 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7648221343873518 [2021-06-13 09:50:42,446 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 387 transitions. [2021-06-13 09:50:42,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 387 transitions. [2021-06-13 09:50:42,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:50:42,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 387 transitions. [2021-06-13 09:50:42,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 35.18181818181818) internal successors, (387), 11 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:42,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:42,447 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:42,447 INFO L185 Difference]: Start difference. First operand has 211 places, 228 transitions, 5353 flow. Second operand 11 states and 387 transitions. [2021-06-13 09:50:42,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 246 transitions, 6063 flow [2021-06-13 09:50:42,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 246 transitions, 5501 flow, removed 20 selfloop flow, removed 19 redundant places. [2021-06-13 09:50:42,511 INFO L241 Difference]: Finished difference. Result has 203 places, 202 transitions, 4245 flow [2021-06-13 09:50:42,511 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4799, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4245, PETRI_PLACES=203, PETRI_TRANSITIONS=202} [2021-06-13 09:50:42,511 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 148 predicate places. [2021-06-13 09:50:42,511 INFO L482 AbstractCegarLoop]: Abstraction has has 203 places, 202 transitions, 4245 flow [2021-06-13 09:50:42,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:42,512 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:50:42,512 INFO L255 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] [2021-06-13 09:50:42,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-13 09:50:42,512 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:50:42,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:50:42,512 INFO L82 PathProgramCache]: Analyzing trace with hash 123427774, now seen corresponding path program 52 times [2021-06-13 09:50:42,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:50:42,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294766311] [2021-06-13 09:50:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:50:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:50:42,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:50:42,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:50:42,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:50:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:50:42,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:50:42,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294766311] [2021-06-13 09:50:42,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294766311] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:50:42,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:50:42,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:50:42,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839119549] [2021-06-13 09:50:42,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:50:42,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:50:42,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:50:42,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:50:42,550 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:50:42,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 202 transitions, 4245 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) [2021-06-13 09:50:42,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:50:42,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:50:42,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:50:42,761 INFO L129 PetriNetUnfolder]: 130/540 cut-off events. [2021-06-13 09:50:42,761 INFO L130 PetriNetUnfolder]: For 12301/12384 co-relation queries the response was YES. [2021-06-13 09:50:42,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4423 conditions, 540 events. 130/540 cut-off events. For 12301/12384 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3454 event pairs, 5 based on Foata normal form. 45/583 useless extension candidates. Maximal degree in co-relation 4359. Up to 174 conditions per place. [2021-06-13 09:50:42,765 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 41 selfloop transitions, 60 changer transitions 46/171 dead transitions. [2021-06-13 09:50:42,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 171 transitions, 3839 flow [2021-06-13 09:50:42,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:50:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:50:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 339 transitions. [2021-06-13 09:50:42,768 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8188405797101449 [2021-06-13 09:50:42,768 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 339 transitions. [2021-06-13 09:50:42,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 339 transitions. [2021-06-13 09:50:42,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:50:42,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 339 transitions. [2021-06-13 09:50:42,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.666666666666664) internal successors, (339), 9 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:42,769 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) [2021-06-13 09:50:42,770 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) [2021-06-13 09:50:42,770 INFO L185 Difference]: Start difference. First operand has 203 places, 202 transitions, 4245 flow. Second operand 9 states and 339 transitions. [2021-06-13 09:50:42,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 171 transitions, 3839 flow [2021-06-13 09:50:42,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 171 transitions, 2844 flow, removed 52 selfloop flow, removed 45 redundant places. [2021-06-13 09:50:42,804 INFO L241 Difference]: Finished difference. Result has 147 places, 106 transitions, 1628 flow [2021-06-13 09:50:42,805 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1628, PETRI_PLACES=147, PETRI_TRANSITIONS=106} [2021-06-13 09:50:42,805 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 92 predicate places. [2021-06-13 09:50:42,805 INFO L482 AbstractCegarLoop]: Abstraction has has 147 places, 106 transitions, 1628 flow [2021-06-13 09:50:42,805 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) [2021-06-13 09:50:42,805 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:50:42,805 INFO L255 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] [2021-06-13 09:50:42,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-13 09:50:42,806 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:50:42,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:50:42,806 INFO L82 PathProgramCache]: Analyzing trace with hash 566387722, now seen corresponding path program 53 times [2021-06-13 09:50:42,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:50:42,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547863623] [2021-06-13 09:50:42,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:50:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:50:42,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:50:42,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:50:42,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:42,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:50:42,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:50:42,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:50:42,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547863623] [2021-06-13 09:50:42,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547863623] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:50:42,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:50:42,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 09:50:42,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607107002] [2021-06-13 09:50:42,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 09:50:42,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:50:42,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 09:50:42,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-13 09:50:42,845 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:50:42,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 106 transitions, 1628 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) [2021-06-13 09:50:42,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:50:42,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:50:42,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:50:42,971 INFO L129 PetriNetUnfolder]: 58/293 cut-off events. [2021-06-13 09:50:42,972 INFO L130 PetriNetUnfolder]: For 4108/4149 co-relation queries the response was YES. [2021-06-13 09:50:42,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 293 events. 58/293 cut-off events. For 4108/4149 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1458 event pairs, 2 based on Foata normal form. 14/306 useless extension candidates. Maximal degree in co-relation 1732. Up to 73 conditions per place. [2021-06-13 09:50:42,973 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 16 selfloop transitions, 43 changer transitions 32/115 dead transitions. [2021-06-13 09:50:42,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 115 transitions, 1884 flow [2021-06-13 09:50:42,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 09:50:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 09:50:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 316 transitions. [2021-06-13 09:50:42,974 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7632850241545893 [2021-06-13 09:50:42,974 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 316 transitions. [2021-06-13 09:50:42,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 316 transitions. [2021-06-13 09:50:42,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:50:42,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 316 transitions. [2021-06-13 09:50:42,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:42,976 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) [2021-06-13 09:50:42,976 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) [2021-06-13 09:50:42,976 INFO L185 Difference]: Start difference. First operand has 147 places, 106 transitions, 1628 flow. Second operand 9 states and 316 transitions. [2021-06-13 09:50:42,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 115 transitions, 1884 flow [2021-06-13 09:50:42,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 115 transitions, 1626 flow, removed 27 selfloop flow, removed 24 redundant places. [2021-06-13 09:50:42,988 INFO L241 Difference]: Finished difference. Result has 125 places, 72 transitions, 891 flow [2021-06-13 09:50:42,988 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=891, PETRI_PLACES=125, PETRI_TRANSITIONS=72} [2021-06-13 09:50:42,988 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 70 predicate places. [2021-06-13 09:50:42,989 INFO L482 AbstractCegarLoop]: Abstraction has has 125 places, 72 transitions, 891 flow [2021-06-13 09:50:42,989 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) [2021-06-13 09:50:42,989 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:50:42,989 INFO L255 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] [2021-06-13 09:50:42,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-13 09:50:42,989 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:50:42,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:50:42,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1283346276, now seen corresponding path program 54 times [2021-06-13 09:50:42,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:50:42,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365122014] [2021-06-13 09:50:42,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:50:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:50:42,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:42,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:50:43,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:43,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:43,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:43,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:50:43,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:43,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:43,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:43,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:43,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:43,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:43,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:43,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:43,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:43,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:43,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:43,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:50:43,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:50:43,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:50:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:50:43,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:50:43,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365122014] [2021-06-13 09:50:43,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365122014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:50:43,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:50:43,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 09:50:43,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5129594] [2021-06-13 09:50:43,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 09:50:43,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:50:43,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 09:50:43,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-13 09:50:43,033 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-06-13 09:50:43,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 72 transitions, 891 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) [2021-06-13 09:50:43,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:50:43,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-06-13 09:50:43,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:50:43,185 INFO L129 PetriNetUnfolder]: 31/144 cut-off events. [2021-06-13 09:50:43,185 INFO L130 PetriNetUnfolder]: For 1473/1475 co-relation queries the response was YES. [2021-06-13 09:50:43,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 144 events. 31/144 cut-off events. For 1473/1475 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 599 event pairs, 0 based on Foata normal form. 5/149 useless extension candidates. Maximal degree in co-relation 930. Up to 46 conditions per place. [2021-06-13 09:50:43,186 INFO L132 encePairwiseOnDemand]: 36/46 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2021-06-13 09:50:43,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 69 transitions, 997 flow [2021-06-13 09:50:43,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-13 09:50:43,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-13 09:50:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 398 transitions. [2021-06-13 09:50:43,187 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7210144927536232 [2021-06-13 09:50:43,187 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 398 transitions. [2021-06-13 09:50:43,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 398 transitions. [2021-06-13 09:50:43,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:50:43,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 398 transitions. [2021-06-13 09:50:43,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 33.166666666666664) internal successors, (398), 12 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:43,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:43,188 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:50:43,188 INFO L185 Difference]: Start difference. First operand has 125 places, 72 transitions, 891 flow. Second operand 12 states and 398 transitions. [2021-06-13 09:50:43,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 69 transitions, 997 flow [2021-06-13 09:50:43,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 516 flow, removed 35 selfloop flow, removed 36 redundant places. [2021-06-13 09:50:43,192 INFO L241 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2021-06-13 09:50:43,192 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2021-06-13 09:50:43,192 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2021-06-13 09:50:43,192 INFO L482 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2021-06-13 09:50:43,192 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) [2021-06-13 09:50:43,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-13 09:50:43,195 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 09:50:43,197 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 09:50:43 BasicIcfg [2021-06-13 09:50:43,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 09:50:43,198 INFO L168 Benchmark]: Toolchain (without parser) took 282747.95 ms. Allocated memory was 181.4 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 160.3 MB in the beginning and 6.5 GB in the end (delta: -6.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2021-06-13 09:50:43,198 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 181.4 MB. Free memory is still 161.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 09:50:43,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.50 ms. Allocated memory is still 181.4 MB. Free memory was 160.1 MB in the beginning and 158.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 09:50:43,198 INFO L168 Benchmark]: Boogie Preprocessor took 20.93 ms. Allocated memory is still 181.4 MB. Free memory was 158.8 MB in the beginning and 157.8 MB in the end (delta: 976.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 09:50:43,198 INFO L168 Benchmark]: RCFGBuilder took 300.80 ms. Allocated memory is still 181.4 MB. Free memory was 157.8 MB in the beginning and 142.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-06-13 09:50:43,198 INFO L168 Benchmark]: TraceAbstraction took 282390.79 ms. Allocated memory was 181.4 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 142.1 MB in the beginning and 6.5 GB in the end (delta: -6.4 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2021-06-13 09:50:43,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 181.4 MB. Free memory is still 161.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 30.50 ms. Allocated memory is still 181.4 MB. Free memory was 160.1 MB in the beginning and 158.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 20.93 ms. Allocated memory is still 181.4 MB. Free memory was 158.8 MB in the beginning and 157.8 MB in the end (delta: 976.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 300.80 ms. Allocated memory is still 181.4 MB. Free memory was 157.8 MB in the beginning and 142.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 282390.79 ms. Allocated memory was 181.4 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 142.1 MB in the beginning and 6.5 GB in the end (delta: -6.4 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 11 procedures, 83 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 25.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 282246.1ms, OverallIterations: 54, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 279079.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 46.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 93 SDtfs, 1390 SDslu, 9 SDs, 0 SdLazy, 15423 SolverSat, 2354 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7167.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 660 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 521 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 2368.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=59502occurred in iteration=45, InterpolantAutomatonStates: 521, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 62.2ms SsaConstructionTime, 279.9ms SatisfiabilityAnalysisTime, 2412.3ms InterpolantComputationTime, 2106 NumberOfCodeBlocks, 2106 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 2052 ConstructedInterpolants, 0 QuantifiedInterpolants, 5757 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 54 InterpolantComputations, 54 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...