/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 13:34:28,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 13:34:28,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 13:34:28,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 13:34:28,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 13:34:28,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 13:34:29,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 13:34:29,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 13:34:29,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 13:34:29,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 13:34:29,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 13:34:29,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 13:34:29,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 13:34:29,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 13:34:29,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 13:34:29,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 13:34:29,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 13:34:29,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 13:34:29,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 13:34:29,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 13:34:29,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 13:34:29,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 13:34:29,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 13:34:29,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 13:34:29,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-13 13:34:29,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-13 13:34:29,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-13 13:34:29,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-13 13:34:29,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-13 13:34:29,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-08-13 13:34:29,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 13:34:29,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 13:34:29,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 13:34:29,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-Hitting.epf [2021-08-13 13:34:29,085 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 13:34:29,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 13:34:29,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 13:34:29,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 13:34:29,086 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 13:34:29,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 13:34:29,086 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 13:34:29,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 13:34:29,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 13:34:29,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 13:34:29,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 13:34:29,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 13:34:29,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 13:34:29,087 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 13:34:29,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 13:34:29,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 13:34:29,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 13:34:29,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 13:34:29,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 13:34:29,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 13:34:29,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 13:34:29,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 13:34:29,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 13:34:29,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 13:34:29,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 13:34:29,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 13:34:29,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 13:34:29,088 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 13:34:29,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 13:34:29,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 13:34:29,089 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 13:34:29,089 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 13:34:29,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 13:34:29,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 13:34:29,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 13:34:29,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 13:34:29,307 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 13:34:29,308 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 13:34:29,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-08-13 13:34:29,309 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-08-13 13:34:29,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 13:34:29,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 13:34:29,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 13:34:29,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 13:34:29,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 13:34:29,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:34:29" (1/1) ... [2021-08-13 13:34:29,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:34:29" (1/1) ... [2021-08-13 13:34:29,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 13:34:29,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 13:34:29,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 13:34:29,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 13:34:29,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:34:29" (1/1) ... [2021-08-13 13:34:29,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:34:29" (1/1) ... [2021-08-13 13:34:29,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:34:29" (1/1) ... [2021-08-13 13:34:29,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:34:29" (1/1) ... [2021-08-13 13:34:29,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:34:29" (1/1) ... [2021-08-13 13:34:29,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:34:29" (1/1) ... [2021-08-13 13:34:29,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:34:29" (1/1) ... [2021-08-13 13:34:29,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 13:34:29,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 13:34:29,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 13:34:29,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 13:34:29,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:34:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 13:34:29,413 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 13:34:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 13:34:29,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 13:34:29,414 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 13:34:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 13:34:29,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 13:34:29,414 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 13:34:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 13:34:29,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 13:34:29,414 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-13 13:34:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-13 13:34:29,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-13 13:34:29,415 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-13 13:34:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-13 13:34:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-13 13:34:29,416 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-08-13 13:34:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-08-13 13:34:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-08-13 13:34:29,417 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 13:34:29,562 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 13:34:29,562 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 13:34:29,564 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 01:34:29 BoogieIcfgContainer [2021-08-13 13:34:29,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 13:34:29,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 13:34:29,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 13:34:29,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 13:34:29,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 01:34:29" (1/2) ... [2021-08-13 13:34:29,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae3b3cb and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 01:34:29, skipping insertion in model container [2021-08-13 13:34:29,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 01:34:29" (2/2) ... [2021-08-13 13:34:29,569 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-08-13 13:34:29,572 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 13:34:29,573 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 13:34:29,573 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 13:34:29,614 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-08-13 13:34:29,629 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-13 13:34:29,643 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 13:34:29,643 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 13:34:29,643 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 13:34:29,643 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 13:34:29,644 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 13:34:29,644 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 13:34:29,644 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 13:34:29,644 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 13:34:29,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 46 transitions, 132 flow [2021-08-13 13:34:29,686 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-08-13 13:34:29,686 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-08-13 13:34:29,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 41 events. 0/41 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 13:34:29,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 46 transitions, 132 flow [2021-08-13 13:34:29,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 39 transitions, 108 flow [2021-08-13 13:34:29,717 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-08-13 13:34:29,717 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-08-13 13:34:29,718 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:34:29,718 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:34:29,718 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:34:29,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:34:29,722 INFO L82 PathProgramCache]: Analyzing trace with hash 845413524, now seen corresponding path program 1 times [2021-08-13 13:34:29,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:34:29,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347563959] [2021-08-13 13:34:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:34:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:34:29,857 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-08-13 13:34:29,858 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-08-13 13:34:29,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:29,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:34:29,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:29,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:34:29,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:29,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 13:34:29,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:29,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:34:29,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:29,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:34:29,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:29,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 13:34:29,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:29,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:34:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:34:29,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:34:29,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347563959] [2021-08-13 13:34:29,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347563959] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:34:29,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:34:29,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 13:34:29,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127745262] [2021-08-13 13:34:29,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 13:34:29,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:34:29,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 13:34:29,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-13 13:34:29,928 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 46 [2021-08-13 13:34:29,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:29,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:34:29,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 46 [2021-08-13 13:34:29,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:34:30,199 INFO L129 PetriNetUnfolder]: 1023/2303 cut-off events. [2021-08-13 13:34:30,199 INFO L130 PetriNetUnfolder]: For 172/172 co-relation queries the response was YES. [2021-08-13 13:34:30,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3970 conditions, 2303 events. 1023/2303 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18549 event pairs, 452 based on Foata normal form. 1/2283 useless extension candidates. Maximal degree in co-relation 3939. Up to 810 conditions per place. [2021-08-13 13:34:30,222 INFO L132 encePairwiseOnDemand]: 33/46 looper letters, 23 selfloop transitions, 11 changer transitions 1/61 dead transitions. [2021-08-13 13:34:30,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 222 flow [2021-08-13 13:34:30,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 13:34:30,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 13:34:30,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 196 transitions. [2021-08-13 13:34:30,231 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8521739130434782 [2021-08-13 13:34:30,231 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 196 transitions. [2021-08-13 13:34:30,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 196 transitions. [2021-08-13 13:34:30,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:34:30,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 196 transitions. [2021-08-13 13:34:30,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:30,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:30,248 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:30,249 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2021-08-13 13:34:30,249 INFO L482 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 222 flow [2021-08-13 13:34:30,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:30,250 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:34:30,250 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:34:30,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 13:34:30,250 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:34:30,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:34:30,252 INFO L82 PathProgramCache]: Analyzing trace with hash 784312606, now seen corresponding path program 2 times [2021-08-13 13:34:30,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:34:30,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295229283] [2021-08-13 13:34:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:34:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:34:30,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:30,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:34:30,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:30,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:30,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:30,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:30,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:30,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:30,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:30,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:30,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:30,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:30,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:30,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:34:30,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:34:30,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:34:30,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295229283] [2021-08-13 13:34:30,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295229283] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:34:30,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:34:30,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 13:34:30,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129972125] [2021-08-13 13:34:30,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 13:34:30,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:34:30,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 13:34:30,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-13 13:34:30,370 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:34:30,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 222 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:30,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:34:30,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:34:30,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:34:33,129 INFO L129 PetriNetUnfolder]: 21559/32855 cut-off events. [2021-08-13 13:34:33,132 INFO L130 PetriNetUnfolder]: For 7273/7435 co-relation queries the response was YES. [2021-08-13 13:34:33,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72946 conditions, 32855 events. 21559/32855 cut-off events. For 7273/7435 co-relation queries the response was YES. Maximal size of possible extension queue 2054. Compared 254953 event pairs, 5642 based on Foata normal form. 87/30761 useless extension candidates. Maximal degree in co-relation 72913. Up to 10493 conditions per place. [2021-08-13 13:34:33,444 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 57 selfloop transitions, 72 changer transitions 0/161 dead transitions. [2021-08-13 13:34:33,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 161 transitions, 784 flow [2021-08-13 13:34:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 13:34:33,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 13:34:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 322 transitions. [2021-08-13 13:34:33,449 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-08-13 13:34:33,449 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 322 transitions. [2021-08-13 13:34:33,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 322 transitions. [2021-08-13 13:34:33,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:34:33,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 322 transitions. [2021-08-13 13:34:33,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.25) internal successors, (322), 8 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:33,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:33,454 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:33,454 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2021-08-13 13:34:33,454 INFO L482 AbstractCegarLoop]: Abstraction has has 66 places, 161 transitions, 784 flow [2021-08-13 13:34:33,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:33,455 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:34:33,455 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:34:33,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 13:34:33,455 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:34:33,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:34:33,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1452761740, now seen corresponding path program 3 times [2021-08-13 13:34:33,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:34:33,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856403379] [2021-08-13 13:34:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:34:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:34:33,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:33,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:34:33,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:33,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:33,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:33,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:33,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:33,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:33,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:33,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:33,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:33,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:33,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:33,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:33,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:33,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:33,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:33,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:34:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:34:33,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:34:33,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856403379] [2021-08-13 13:34:33,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856403379] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:34:33,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:34:33,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 13:34:33,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057794526] [2021-08-13 13:34:33,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 13:34:33,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:34:33,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 13:34:33,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-13 13:34:33,524 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:34:33,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 161 transitions, 784 flow. Second operand has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:33,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:34:33,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:34:33,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:34:37,017 INFO L129 PetriNetUnfolder]: 28561/46995 cut-off events. [2021-08-13 13:34:37,018 INFO L130 PetriNetUnfolder]: For 26029/29530 co-relation queries the response was YES. [2021-08-13 13:34:37,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133951 conditions, 46995 events. 28561/46995 cut-off events. For 26029/29530 co-relation queries the response was YES. Maximal size of possible extension queue 3154. Compared 425513 event pairs, 6233 based on Foata normal form. 1129/45560 useless extension candidates. Maximal degree in co-relation 133916. Up to 13561 conditions per place. [2021-08-13 13:34:37,328 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 174 selfloop transitions, 99 changer transitions 0/305 dead transitions. [2021-08-13 13:34:37,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 305 transitions, 2050 flow [2021-08-13 13:34:37,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 13:34:37,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 13:34:37,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2021-08-13 13:34:37,329 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8623188405797102 [2021-08-13 13:34:37,329 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 238 transitions. [2021-08-13 13:34:37,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 238 transitions. [2021-08-13 13:34:37,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:34:37,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 238 transitions. [2021-08-13 13:34:37,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.666666666666664) internal successors, (238), 6 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:37,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:37,331 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:37,331 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2021-08-13 13:34:37,331 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 305 transitions, 2050 flow [2021-08-13 13:34:37,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:37,331 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:34:37,331 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:34:37,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 13:34:37,332 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:34:37,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:34:37,332 INFO L82 PathProgramCache]: Analyzing trace with hash -726951234, now seen corresponding path program 4 times [2021-08-13 13:34:37,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:34:37,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409056933] [2021-08-13 13:34:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:34:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:34:37,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:37,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:34:37,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:37,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:37,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:37,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:37,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:37,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:34:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:34:37,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:34:37,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409056933] [2021-08-13 13:34:37,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409056933] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:34:37,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:34:37,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 13:34:37,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741057395] [2021-08-13 13:34:37,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 13:34:37,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:34:37,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 13:34:37,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 13:34:37,361 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:34:37,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 305 transitions, 2050 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:37,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:34:37,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:34:37,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:34:40,795 INFO L129 PetriNetUnfolder]: 29707/48145 cut-off events. [2021-08-13 13:34:40,795 INFO L130 PetriNetUnfolder]: For 52298/58263 co-relation queries the response was YES. [2021-08-13 13:34:40,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169976 conditions, 48145 events. 29707/48145 cut-off events. For 52298/58263 co-relation queries the response was YES. Maximal size of possible extension queue 3069. Compared 425511 event pairs, 6585 based on Foata normal form. 908/46670 useless extension candidates. Maximal degree in co-relation 169939. Up to 28079 conditions per place. [2021-08-13 13:34:41,124 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 373 selfloop transitions, 75 changer transitions 1/481 dead transitions. [2021-08-13 13:34:41,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 481 transitions, 4172 flow [2021-08-13 13:34:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 13:34:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 13:34:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-08-13 13:34:41,125 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-08-13 13:34:41,125 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-08-13 13:34:41,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-08-13 13:34:41,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:34:41,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-08-13 13:34:41,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:41,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:41,126 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:41,127 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2021-08-13 13:34:41,127 INFO L482 AbstractCegarLoop]: Abstraction has has 75 places, 481 transitions, 4172 flow [2021-08-13 13:34:41,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:41,127 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:34:41,127 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:34:41,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 13:34:41,127 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:34:41,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:34:41,128 INFO L82 PathProgramCache]: Analyzing trace with hash -79446480, now seen corresponding path program 5 times [2021-08-13 13:34:41,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:34:41,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236423282] [2021-08-13 13:34:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:34:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:34:41,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:41,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:34:41,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:41,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:41,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:41,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:41,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:41,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:41,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:41,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:41,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:41,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:41,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:41,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:41,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:41,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:34:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:34:41,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:34:41,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236423282] [2021-08-13 13:34:41,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236423282] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:34:41,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:34:41,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 13:34:41,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408754476] [2021-08-13 13:34:41,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 13:34:41,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:34:41,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 13:34:41,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-13 13:34:41,193 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:34:41,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 481 transitions, 4172 flow. Second operand has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:41,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:34:41,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:34:41,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:34:45,537 INFO L129 PetriNetUnfolder]: 31077/50272 cut-off events. [2021-08-13 13:34:45,537 INFO L130 PetriNetUnfolder]: For 93087/102563 co-relation queries the response was YES. [2021-08-13 13:34:45,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210432 conditions, 50272 events. 31077/50272 cut-off events. For 93087/102563 co-relation queries the response was YES. Maximal size of possible extension queue 3221. Compared 445136 event pairs, 6892 based on Foata normal form. 1651/49475 useless extension candidates. Maximal degree in co-relation 210393. Up to 28905 conditions per place. [2021-08-13 13:34:45,920 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 198 selfloop transitions, 303 changer transitions 1/534 dead transitions. [2021-08-13 13:34:45,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 534 transitions, 5634 flow [2021-08-13 13:34:45,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 13:34:45,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 13:34:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2021-08-13 13:34:45,924 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8717391304347826 [2021-08-13 13:34:45,924 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 401 transitions. [2021-08-13 13:34:45,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 401 transitions. [2021-08-13 13:34:45,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:34:45,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 401 transitions. [2021-08-13 13:34:45,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.1) internal successors, (401), 10 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:45,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:45,929 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:45,929 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2021-08-13 13:34:45,929 INFO L482 AbstractCegarLoop]: Abstraction has has 84 places, 534 transitions, 5634 flow [2021-08-13 13:34:45,929 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:45,929 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:34:45,929 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:34:45,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 13:34:45,930 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:34:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:34:45,930 INFO L82 PathProgramCache]: Analyzing trace with hash 777061248, now seen corresponding path program 6 times [2021-08-13 13:34:45,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:34:45,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267901905] [2021-08-13 13:34:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:34:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:34:45,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:45,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:34:45,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:45,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:45,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:45,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:45,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:45,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:45,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:45,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:34:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:34:45,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:34:45,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267901905] [2021-08-13 13:34:45,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267901905] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:34:45,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:34:45,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 13:34:45,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502626768] [2021-08-13 13:34:45,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 13:34:45,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:34:45,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 13:34:45,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-13 13:34:45,966 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:34:45,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 534 transitions, 5634 flow. Second operand has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:45,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:34:45,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:34:45,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:34:50,582 INFO L129 PetriNetUnfolder]: 31552/51192 cut-off events. [2021-08-13 13:34:50,583 INFO L130 PetriNetUnfolder]: For 144324/154355 co-relation queries the response was YES. [2021-08-13 13:34:50,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248694 conditions, 51192 events. 31552/51192 cut-off events. For 144324/154355 co-relation queries the response was YES. Maximal size of possible extension queue 3195. Compared 456519 event pairs, 7447 based on Foata normal form. 1973/50719 useless extension candidates. Maximal degree in co-relation 248653. Up to 29608 conditions per place. [2021-08-13 13:34:51,032 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 394 selfloop transitions, 245 changer transitions 4/675 dead transitions. [2021-08-13 13:34:51,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 675 transitions, 8440 flow [2021-08-13 13:34:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 13:34:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 13:34:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2021-08-13 13:34:51,034 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8623188405797102 [2021-08-13 13:34:51,034 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 238 transitions. [2021-08-13 13:34:51,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 238 transitions. [2021-08-13 13:34:51,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:34:51,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 238 transitions. [2021-08-13 13:34:51,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.666666666666664) internal successors, (238), 6 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:51,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:51,035 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:51,035 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2021-08-13 13:34:51,036 INFO L482 AbstractCegarLoop]: Abstraction has has 89 places, 675 transitions, 8440 flow [2021-08-13 13:34:51,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:51,036 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:34:51,036 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:34:51,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 13:34:51,036 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:34:51,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:34:51,036 INFO L82 PathProgramCache]: Analyzing trace with hash -228704232, now seen corresponding path program 7 times [2021-08-13 13:34:51,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:34:51,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404146094] [2021-08-13 13:34:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:34:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:34:51,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:51,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:34:51,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:51,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:51,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:51,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:51,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:51,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:51,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:51,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:51,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:51,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:51,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:51,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:51,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:51,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:34:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:34:51,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:34:51,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404146094] [2021-08-13 13:34:51,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404146094] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:34:51,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:34:51,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 13:34:51,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208101070] [2021-08-13 13:34:51,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 13:34:51,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:34:51,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 13:34:51,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-13 13:34:51,088 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:34:51,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 675 transitions, 8440 flow. Second operand has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:51,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:34:51,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:34:51,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:34:56,720 INFO L129 PetriNetUnfolder]: 33842/54722 cut-off events. [2021-08-13 13:34:56,720 INFO L130 PetriNetUnfolder]: For 216244/227597 co-relation queries the response was YES. [2021-08-13 13:34:56,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 300565 conditions, 54722 events. 33842/54722 cut-off events. For 216244/227597 co-relation queries the response was YES. Maximal size of possible extension queue 3461. Compared 488558 event pairs, 8168 based on Foata normal form. 1037/53202 useless extension candidates. Maximal degree in co-relation 300522. Up to 30956 conditions per place. [2021-08-13 13:34:57,288 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 335 selfloop transitions, 429 changer transitions 4/800 dead transitions. [2021-08-13 13:34:57,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 800 transitions, 11530 flow [2021-08-13 13:34:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 13:34:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 13:34:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2021-08-13 13:34:57,293 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8717391304347826 [2021-08-13 13:34:57,293 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 401 transitions. [2021-08-13 13:34:57,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 401 transitions. [2021-08-13 13:34:57,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:34:57,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 401 transitions. [2021-08-13 13:34:57,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.1) internal successors, (401), 10 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:57,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:57,295 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:57,295 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2021-08-13 13:34:57,295 INFO L482 AbstractCegarLoop]: Abstraction has has 98 places, 800 transitions, 11530 flow [2021-08-13 13:34:57,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:57,295 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:34:57,295 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:34:57,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 13:34:57,295 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:34:57,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:34:57,296 INFO L82 PathProgramCache]: Analyzing trace with hash 2086673280, now seen corresponding path program 8 times [2021-08-13 13:34:57,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:34:57,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232777917] [2021-08-13 13:34:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:34:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:34:57,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:57,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:34:57,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:57,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:57,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:57,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:57,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:57,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:57,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:57,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:57,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:57,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:34:57,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:34:57,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:34:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:34:57,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:34:57,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232777917] [2021-08-13 13:34:57,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232777917] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:34:57,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:34:57,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 13:34:57,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728471447] [2021-08-13 13:34:57,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 13:34:57,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:34:57,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 13:34:57,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-13 13:34:57,348 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:34:57,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 800 transitions, 11530 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:34:57,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:34:57,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:34:57,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:35:04,338 INFO L129 PetriNetUnfolder]: 36857/60484 cut-off events. [2021-08-13 13:35:04,338 INFO L130 PetriNetUnfolder]: For 319652/333779 co-relation queries the response was YES. [2021-08-13 13:35:04,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 370918 conditions, 60484 events. 36857/60484 cut-off events. For 319652/333779 co-relation queries the response was YES. Maximal size of possible extension queue 3877. Compared 557659 event pairs, 8652 based on Foata normal form. 1642/59375 useless extension candidates. Maximal degree in co-relation 370873. Up to 34638 conditions per place. [2021-08-13 13:35:05,086 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 482 selfloop transitions, 418 changer transitions 4/936 dead transitions. [2021-08-13 13:35:05,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 936 transitions, 15334 flow [2021-08-13 13:35:05,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 13:35:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 13:35:05,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-08-13 13:35:05,088 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-08-13 13:35:05,088 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-08-13 13:35:05,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-08-13 13:35:05,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:35:05,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-08-13 13:35:05,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.55555555555556) internal successors, (365), 9 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:05,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:05,090 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:05,090 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2021-08-13 13:35:05,090 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 936 transitions, 15334 flow [2021-08-13 13:35:05,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:05,090 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:35:05,090 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:35:05,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 13:35:05,090 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:35:05,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:35:05,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1596078402, now seen corresponding path program 9 times [2021-08-13 13:35:05,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:35:05,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110591885] [2021-08-13 13:35:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:35:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:35:05,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:05,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:35:05,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:05,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:05,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:05,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:05,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:05,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:05,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:05,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:05,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:05,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:05,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:05,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:35:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:35:05,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:35:05,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110591885] [2021-08-13 13:35:05,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110591885] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:35:05,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:35:05,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 13:35:05,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582076049] [2021-08-13 13:35:05,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 13:35:05,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:35:05,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 13:35:05,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-13 13:35:05,130 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:35:05,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 936 transitions, 15334 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:05,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:35:05,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:35:05,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:35:13,590 INFO L129 PetriNetUnfolder]: 39099/64446 cut-off events. [2021-08-13 13:35:13,590 INFO L130 PetriNetUnfolder]: For 445132/461577 co-relation queries the response was YES. [2021-08-13 13:35:13,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 436592 conditions, 64446 events. 39099/64446 cut-off events. For 445132/461577 co-relation queries the response was YES. Maximal size of possible extension queue 4201. Compared 602298 event pairs, 9168 based on Foata normal form. 1936/63600 useless extension candidates. Maximal degree in co-relation 436545. Up to 36658 conditions per place. [2021-08-13 13:35:14,243 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 574 selfloop transitions, 488 changer transitions 4/1098 dead transitions. [2021-08-13 13:35:14,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 1098 transitions, 20158 flow [2021-08-13 13:35:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 13:35:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 13:35:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2021-08-13 13:35:14,245 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2021-08-13 13:35:14,245 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 365 transitions. [2021-08-13 13:35:14,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 365 transitions. [2021-08-13 13:35:14,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:35:14,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 365 transitions. [2021-08-13 13:35:14,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.55555555555556) internal successors, (365), 9 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:14,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:14,247 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:14,247 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2021-08-13 13:35:14,248 INFO L482 AbstractCegarLoop]: Abstraction has has 114 places, 1098 transitions, 20158 flow [2021-08-13 13:35:14,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:14,248 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:35:14,248 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:35:14,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 13:35:14,248 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:35:14,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:35:14,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1938558694, now seen corresponding path program 10 times [2021-08-13 13:35:14,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:35:14,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640062972] [2021-08-13 13:35:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:35:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:35:14,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:14,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:35:14,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:14,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:14,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:14,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:14,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:14,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:14,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:14,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:14,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:14,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:14,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:14,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:14,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:14,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:14,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:14,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:35:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:35:14,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:35:14,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640062972] [2021-08-13 13:35:14,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640062972] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:35:14,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:35:14,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 13:35:14,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531405789] [2021-08-13 13:35:14,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 13:35:14,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:35:14,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 13:35:14,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-13 13:35:14,304 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:35:14,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 1098 transitions, 20158 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:14,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:35:14,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:35:14,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:35:24,267 INFO L129 PetriNetUnfolder]: 39335/65003 cut-off events. [2021-08-13 13:35:24,267 INFO L130 PetriNetUnfolder]: For 567057/585916 co-relation queries the response was YES. [2021-08-13 13:35:24,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 482429 conditions, 65003 events. 39335/65003 cut-off events. For 567057/585916 co-relation queries the response was YES. Maximal size of possible extension queue 4231. Compared 611203 event pairs, 9203 based on Foata normal form. 1249/63458 useless extension candidates. Maximal degree in co-relation 482380. Up to 36960 conditions per place. [2021-08-13 13:35:25,142 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 462 selfloop transitions, 624 changer transitions 4/1122 dead transitions. [2021-08-13 13:35:25,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 1122 transitions, 22770 flow [2021-08-13 13:35:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 13:35:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 13:35:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 520 transitions. [2021-08-13 13:35:25,145 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-08-13 13:35:25,145 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 520 transitions. [2021-08-13 13:35:25,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 520 transitions. [2021-08-13 13:35:25,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:35:25,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 520 transitions. [2021-08-13 13:35:25,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.0) internal successors, (520), 13 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:25,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:25,148 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:25,148 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 71 predicate places. [2021-08-13 13:35:25,148 INFO L482 AbstractCegarLoop]: Abstraction has has 126 places, 1122 transitions, 22770 flow [2021-08-13 13:35:25,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:25,148 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:35:25,149 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:35:25,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 13:35:25,149 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:35:25,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:35:25,150 INFO L82 PathProgramCache]: Analyzing trace with hash -590845340, now seen corresponding path program 11 times [2021-08-13 13:35:25,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:35:25,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669351551] [2021-08-13 13:35:25,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:35:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:35:25,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:25,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:35:25,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:25,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:25,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:25,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:25,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:25,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:35:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:35:25,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:35:25,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669351551] [2021-08-13 13:35:25,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669351551] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:35:25,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:35:25,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 13:35:25,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124835887] [2021-08-13 13:35:25,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 13:35:25,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:35:25,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 13:35:25,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 13:35:25,221 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:35:25,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 1122 transitions, 22770 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:25,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:35:25,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:35:25,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:35:34,339 INFO L129 PetriNetUnfolder]: 35896/60022 cut-off events. [2021-08-13 13:35:34,339 INFO L130 PetriNetUnfolder]: For 658428/679511 co-relation queries the response was YES. [2021-08-13 13:35:34,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 486959 conditions, 60022 events. 35896/60022 cut-off events. For 658428/679511 co-relation queries the response was YES. Maximal size of possible extension queue 4047. Compared 568519 event pairs, 8662 based on Foata normal form. 1021/58324 useless extension candidates. Maximal degree in co-relation 486908. Up to 35288 conditions per place. [2021-08-13 13:35:35,000 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 961 selfloop transitions, 262 changer transitions 77/1332 dead transitions. [2021-08-13 13:35:35,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 1332 transitions, 29726 flow [2021-08-13 13:35:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 13:35:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 13:35:35,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-08-13 13:35:35,002 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-08-13 13:35:35,002 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-08-13 13:35:35,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-08-13 13:35:35,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:35:35,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-08-13 13:35:35,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:35,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:35,003 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:35,004 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 75 predicate places. [2021-08-13 13:35:35,004 INFO L482 AbstractCegarLoop]: Abstraction has has 130 places, 1332 transitions, 29726 flow [2021-08-13 13:35:35,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:35,004 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:35:35,004 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:35:35,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 13:35:35,004 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:35:35,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:35:35,004 INFO L82 PathProgramCache]: Analyzing trace with hash 324061566, now seen corresponding path program 12 times [2021-08-13 13:35:35,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:35:35,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304723280] [2021-08-13 13:35:35,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:35:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:35:35,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:35,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:35:35,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:35,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:35,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:35,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:35,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:35,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:35,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:35,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:35,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:35,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:35,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:35,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:35,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:35,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:35:35,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:35:35,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:35:35,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304723280] [2021-08-13 13:35:35,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304723280] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:35:35,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:35:35,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 13:35:35,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397784925] [2021-08-13 13:35:35,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 13:35:35,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:35:35,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 13:35:35,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-13 13:35:35,162 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:35:35,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 1332 transitions, 29726 flow. Second operand has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:35,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:35:35,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:35:35,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:35:46,050 INFO L129 PetriNetUnfolder]: 37813/63687 cut-off events. [2021-08-13 13:35:46,050 INFO L130 PetriNetUnfolder]: For 821884/844424 co-relation queries the response was YES. [2021-08-13 13:35:46,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 554951 conditions, 63687 events. 37813/63687 cut-off events. For 821884/844424 co-relation queries the response was YES. Maximal size of possible extension queue 4224. Compared 612441 event pairs, 9353 based on Foata normal form. 1566/62550 useless extension candidates. Maximal degree in co-relation 554898. Up to 36698 conditions per place. [2021-08-13 13:35:46,868 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 646 selfloop transitions, 806 changer transitions 85/1569 dead transitions. [2021-08-13 13:35:46,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 1569 transitions, 38088 flow [2021-08-13 13:35:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 13:35:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 13:35:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2021-08-13 13:35:46,869 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8717391304347826 [2021-08-13 13:35:46,869 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 401 transitions. [2021-08-13 13:35:46,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 401 transitions. [2021-08-13 13:35:46,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:35:46,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 401 transitions. [2021-08-13 13:35:46,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.1) internal successors, (401), 10 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:46,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:46,871 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:46,871 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 84 predicate places. [2021-08-13 13:35:46,871 INFO L482 AbstractCegarLoop]: Abstraction has has 139 places, 1569 transitions, 38088 flow [2021-08-13 13:35:46,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:46,871 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:35:46,871 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:35:46,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 13:35:46,872 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:35:46,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:35:46,872 INFO L82 PathProgramCache]: Analyzing trace with hash 480618148, now seen corresponding path program 13 times [2021-08-13 13:35:46,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:35:46,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952417665] [2021-08-13 13:35:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:35:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:35:46,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:46,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:35:46,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:46,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:46,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:46,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:46,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:46,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:46,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:46,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:46,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:46,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:46,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:46,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:46,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:46,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:35:46,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:35:46,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:35:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:35:46,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:35:46,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952417665] [2021-08-13 13:35:46,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952417665] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:35:46,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:35:46,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 13:35:46,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168096629] [2021-08-13 13:35:46,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 13:35:46,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:35:46,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 13:35:46,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-13 13:35:46,929 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:35:46,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 1569 transitions, 38088 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:35:46,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:35:46,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:35:46,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:35:59,144 INFO L129 PetriNetUnfolder]: 38523/65275 cut-off events. [2021-08-13 13:35:59,144 INFO L130 PetriNetUnfolder]: For 1015554/1039317 co-relation queries the response was YES. [2021-08-13 13:35:59,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 611976 conditions, 65275 events. 38523/65275 cut-off events. For 1015554/1039317 co-relation queries the response was YES. Maximal size of possible extension queue 4357. Compared 634610 event pairs, 9593 based on Foata normal form. 1694/64341 useless extension candidates. Maximal degree in co-relation 611921. Up to 37522 conditions per place. [2021-08-13 13:36:00,031 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 734 selfloop transitions, 905 changer transitions 85/1756 dead transitions. [2021-08-13 13:36:00,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 1756 transitions, 46118 flow [2021-08-13 13:36:00,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 13:36:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 13:36:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 521 transitions. [2021-08-13 13:36:00,032 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8712374581939799 [2021-08-13 13:36:00,032 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 521 transitions. [2021-08-13 13:36:00,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 521 transitions. [2021-08-13 13:36:00,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:36:00,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 521 transitions. [2021-08-13 13:36:00,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.07692307692308) internal successors, (521), 13 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:00,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:00,034 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:00,035 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 96 predicate places. [2021-08-13 13:36:00,035 INFO L482 AbstractCegarLoop]: Abstraction has has 151 places, 1756 transitions, 46118 flow [2021-08-13 13:36:00,035 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:00,035 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:36:00,035 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:36:00,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 13:36:00,035 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:36:00,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:36:00,035 INFO L82 PathProgramCache]: Analyzing trace with hash -49070656, now seen corresponding path program 14 times [2021-08-13 13:36:00,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:36:00,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607029014] [2021-08-13 13:36:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:36:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:36:00,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:00,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:36:00,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:00,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:00,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:00,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:00,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:00,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:36:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:36:00,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:36:00,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607029014] [2021-08-13 13:36:00,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607029014] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:36:00,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:36:00,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 13:36:00,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697934926] [2021-08-13 13:36:00,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 13:36:00,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:36:00,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 13:36:00,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 13:36:00,080 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:36:00,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 1756 transitions, 46118 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:00,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:36:00,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:36:00,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:36:13,691 INFO L129 PetriNetUnfolder]: 37312/63438 cut-off events. [2021-08-13 13:36:13,692 INFO L130 PetriNetUnfolder]: For 1155937/1183027 co-relation queries the response was YES. [2021-08-13 13:36:14,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 636940 conditions, 63438 events. 37312/63438 cut-off events. For 1155937/1183027 co-relation queries the response was YES. Maximal size of possible extension queue 4297. Compared 617276 event pairs, 9356 based on Foata normal form. 678/61428 useless extension candidates. Maximal degree in co-relation 636883. Up to 36990 conditions per place. [2021-08-13 13:36:14,573 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 1329 selfloop transitions, 411 changer transitions 127/1899 dead transitions. [2021-08-13 13:36:14,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 1899 transitions, 53676 flow [2021-08-13 13:36:14,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 13:36:14,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 13:36:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-08-13 13:36:14,574 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-08-13 13:36:14,574 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-08-13 13:36:14,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-08-13 13:36:14,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:36:14,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-08-13 13:36:14,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:14,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:14,575 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:14,576 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 100 predicate places. [2021-08-13 13:36:14,576 INFO L482 AbstractCegarLoop]: Abstraction has has 155 places, 1899 transitions, 53676 flow [2021-08-13 13:36:14,576 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:14,576 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:36:14,576 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:36:14,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 13:36:14,576 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:36:14,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:36:14,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1182662166, now seen corresponding path program 15 times [2021-08-13 13:36:14,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:36:14,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387889779] [2021-08-13 13:36:14,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:36:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:36:14,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:14,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:36:14,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:14,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:14,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:14,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:14,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:14,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:14,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:14,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:14,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:14,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:14,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:14,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:14,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:14,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:14,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:14,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:36:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:36:14,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:36:14,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387889779] [2021-08-13 13:36:14,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387889779] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:36:14,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:36:14,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 13:36:14,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269342712] [2021-08-13 13:36:14,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 13:36:14,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:36:14,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 13:36:14,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-13 13:36:14,635 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:36:14,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 1899 transitions, 53676 flow. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:14,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:36:14,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:36:14,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:36:29,125 INFO L129 PetriNetUnfolder]: 37430/63885 cut-off events. [2021-08-13 13:36:29,125 INFO L130 PetriNetUnfolder]: For 1340315/1370539 co-relation queries the response was YES. [2021-08-13 13:36:29,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 682258 conditions, 63885 events. 37430/63885 cut-off events. For 1340315/1370539 co-relation queries the response was YES. Maximal size of possible extension queue 4381. Compared 625842 event pairs, 9360 based on Foata normal form. 775/61976 useless extension candidates. Maximal degree in co-relation 682199. Up to 37213 conditions per place. [2021-08-13 13:36:29,883 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 789 selfloop transitions, 975 changer transitions 127/1923 dead transitions. [2021-08-13 13:36:29,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 1923 transitions, 58130 flow [2021-08-13 13:36:29,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 13:36:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 13:36:29,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 520 transitions. [2021-08-13 13:36:29,897 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-08-13 13:36:29,897 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 520 transitions. [2021-08-13 13:36:29,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 520 transitions. [2021-08-13 13:36:29,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:36:29,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 520 transitions. [2021-08-13 13:36:29,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.0) internal successors, (520), 13 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:29,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:29,899 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:29,899 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 112 predicate places. [2021-08-13 13:36:29,899 INFO L482 AbstractCegarLoop]: Abstraction has has 167 places, 1923 transitions, 58130 flow [2021-08-13 13:36:29,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:29,899 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:36:29,899 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:36:29,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 13:36:29,899 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:36:29,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:36:29,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1105730754, now seen corresponding path program 16 times [2021-08-13 13:36:29,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:36:29,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036452656] [2021-08-13 13:36:29,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:36:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:36:29,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:29,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:36:29,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:29,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:29,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:29,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:29,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:29,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:36:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:36:29,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:36:29,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036452656] [2021-08-13 13:36:29,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036452656] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:36:29,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:36:29,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 13:36:29,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401964016] [2021-08-13 13:36:29,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 13:36:29,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:36:29,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 13:36:29,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 13:36:29,918 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:36:29,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 1923 transitions, 58130 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:29,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:36:29,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:36:29,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 13:36:43,938 INFO L129 PetriNetUnfolder]: 35402/61289 cut-off events. [2021-08-13 13:36:43,938 INFO L130 PetriNetUnfolder]: For 1458799/1491720 co-relation queries the response was YES. [2021-08-13 13:36:44,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 692768 conditions, 61289 events. 35402/61289 cut-off events. For 1458799/1491720 co-relation queries the response was YES. Maximal size of possible extension queue 4372. Compared 608873 event pairs, 9052 based on Foata normal form. 687/59335 useless extension candidates. Maximal degree in co-relation 692707. Up to 36510 conditions per place. [2021-08-13 13:36:44,777 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 1372 selfloop transitions, 416 changer transitions 171/1991 dead transitions. [2021-08-13 13:36:44,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 1991 transitions, 64148 flow [2021-08-13 13:36:44,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 13:36:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 13:36:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2021-08-13 13:36:44,778 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-08-13 13:36:44,778 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2021-08-13 13:36:44,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2021-08-13 13:36:44,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 13:36:44,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2021-08-13 13:36:44,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:44,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:44,779 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:44,779 INFO L348 CegarLoopForPetriNet]: 55 programPoint places, 116 predicate places. [2021-08-13 13:36:44,779 INFO L482 AbstractCegarLoop]: Abstraction has has 171 places, 1991 transitions, 64148 flow [2021-08-13 13:36:44,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:44,779 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 13:36:44,779 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 13:36:44,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 13:36:44,779 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 13:36:44,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 13:36:44,780 INFO L82 PathProgramCache]: Analyzing trace with hash 2095215536, now seen corresponding path program 17 times [2021-08-13 13:36:44,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 13:36:44,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439860674] [2021-08-13 13:36:44,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 13:36:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 13:36:44,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:44,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 13:36:44,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:44,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:44,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:44,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:44,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:44,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:44,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:44,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 13:36:44,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 13:36:44,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 13:36:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 13:36:44,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 13:36:44,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439860674] [2021-08-13 13:36:44,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439860674] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 13:36:44,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 13:36:44,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 13:36:44,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081057445] [2021-08-13 13:36:44,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 13:36:44,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 13:36:44,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 13:36:44,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-13 13:36:44,814 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 13:36:44,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 1991 transitions, 64148 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 13:36:44,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 13:36:44,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 13:36:44,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand