/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 16:16:18,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 16:16:18,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 16:16:18,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 16:16:18,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 16:16:18,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 16:16:18,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 16:16:18,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 16:16:18,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 16:16:18,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 16:16:18,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 16:16:18,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 16:16:18,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 16:16:18,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 16:16:18,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 16:16:18,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 16:16:18,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 16:16:18,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 16:16:18,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 16:16:18,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 16:16:18,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 16:16:18,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 16:16:18,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 16:16:18,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 16:16:18,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 16:16:18,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 16:16:18,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 16:16:18,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 16:16:18,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 16:16:18,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 16:16:18,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 16:16:18,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 16:16:18,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 16:16:18,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 16:16:18,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 16:16:18,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 16:16:18,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 16:16:18,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 16:16:18,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 16:16:18,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 16:16:18,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 16:16:18,679 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 16:16:18,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 16:16:18,679 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 16:16:18,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 16:16:18,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 16:16:18,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 16:16:18,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 16:16:18,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 16:16:18,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 16:16:18,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 16:16:18,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 16:16:18,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 16:16:18,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 16:16:18,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 16:16:18,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 16:16:18,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 16:16:18,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 16:16:18,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 16:16:18,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 16:16:18,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 16:16:18,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 16:16:18,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 16:16:18,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 16:16:18,683 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 16:16:18,683 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 16:16:18,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 16:16:19,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 16:16:19,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 16:16:19,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 16:16:19,037 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 16:16:19,038 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 16:16:19,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2021-06-10 16:16:19,047 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2021-06-10 16:16:19,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 16:16:19,084 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 16:16:19,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 16:16:19,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 16:16:19,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 16:16:19,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:16:19" (1/1) ... [2021-06-10 16:16:19,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:16:19" (1/1) ... [2021-06-10 16:16:19,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 16:16:19,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 16:16:19,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 16:16:19,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 16:16:19,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:16:19" (1/1) ... [2021-06-10 16:16:19,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:16:19" (1/1) ... [2021-06-10 16:16:19,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:16:19" (1/1) ... [2021-06-10 16:16:19,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:16:19" (1/1) ... [2021-06-10 16:16:19,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:16:19" (1/1) ... [2021-06-10 16:16:19,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:16:19" (1/1) ... [2021-06-10 16:16:19,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:16:19" (1/1) ... [2021-06-10 16:16:19,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 16:16:19,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 16:16:19,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 16:16:19,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 16:16:19,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:16:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 16:16:19,203 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-10 16:16:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-10 16:16:19,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-10 16:16:19,203 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-10 16:16:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-10 16:16:19,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-10 16:16:19,204 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 16:16:19,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 16:16:19,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 16:16:19,204 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-10 16:16:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-10 16:16:19,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-10 16:16:19,210 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 16:16:19,432 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 16:16:19,433 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-10 16:16:19,434 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 04:16:19 BoogieIcfgContainer [2021-06-10 16:16:19,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 16:16:19,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 16:16:19,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 16:16:19,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 16:16:19,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 04:16:19" (1/2) ... [2021-06-10 16:16:19,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308a30fc and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 04:16:19, skipping insertion in model container [2021-06-10 16:16:19,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 04:16:19" (2/2) ... [2021-06-10 16:16:19,440 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2021-06-10 16:16:19,461 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 16:16:19,464 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 16:16:19,465 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 16:16:19,534 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-10 16:16:19,551 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 16:16:19,602 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 16:16:19,602 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 16:16:19,602 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 16:16:19,602 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 16:16:19,602 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 16:16:19,602 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 16:16:19,602 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 16:16:19,602 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 16:16:19,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 106 flow [2021-06-10 16:16:19,656 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-06-10 16:16:19,657 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-10 16:16:19,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 0/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-10 16:16:19,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 106 flow [2021-06-10 16:16:19,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 36 transitions, 90 flow [2021-06-10 16:16:19,681 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2021-06-10 16:16:19,682 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-10 16:16:19,682 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:19,683 INFO L263 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] [2021-06-10 16:16:19,683 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:19,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:19,691 INFO L82 PathProgramCache]: Analyzing trace with hash 627180506, now seen corresponding path program 1 times [2021-06-10 16:16:19,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:19,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44455878] [2021-06-10 16:16:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:19,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:19,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:19,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:19,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:19,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:19,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:19,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:19,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:19,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:19,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:19,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:19,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:19,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:19,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:19,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:19,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:19,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44455878] [2021-06-10 16:16:19,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:19,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 16:16:19,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186587133] [2021-06-10 16:16:19,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:19,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:19,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:19,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:19,914 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:19,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:19,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:19,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:19,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:20,077 INFO L129 PetriNetUnfolder]: 31/145 cut-off events. [2021-06-10 16:16:20,077 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-06-10 16:16:20,080 INFO L84 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 145 events. 31/145 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 621 event pairs, 17 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 214. Up to 51 conditions per place. [2021-06-10 16:16:20,083 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 9 selfloop transitions, 14 changer transitions 3/54 dead transitions. [2021-06-10 16:16:20,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 178 flow [2021-06-10 16:16:20,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 16:16:20,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 16:16:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 315 transitions. [2021-06-10 16:16:20,094 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8536585365853658 [2021-06-10 16:16:20,095 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 315 transitions. [2021-06-10 16:16:20,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 315 transitions. [2021-06-10 16:16:20,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:20,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 315 transitions. [2021-06-10 16:16:20,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,107 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,108 INFO L185 Difference]: Start difference. First operand has 46 places, 36 transitions, 90 flow. Second operand 9 states and 315 transitions. [2021-06-10 16:16:20,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 178 flow [2021-06-10 16:16:20,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 166 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-06-10 16:16:20,114 INFO L241 Difference]: Finished difference. Result has 51 places, 49 transitions, 160 flow [2021-06-10 16:16:20,115 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2021-06-10 16:16:20,116 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2021-06-10 16:16:20,116 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 160 flow [2021-06-10 16:16:20,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,117 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:20,117 INFO L263 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] [2021-06-10 16:16:20,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 16:16:20,117 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:20,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:20,118 INFO L82 PathProgramCache]: Analyzing trace with hash 219872172, now seen corresponding path program 2 times [2021-06-10 16:16:20,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:20,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380815244] [2021-06-10 16:16:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:20,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:20,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:20,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:20,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:20,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:20,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 16:16:20,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:20,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380815244] [2021-06-10 16:16:20,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:20,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 16:16:20,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413809027] [2021-06-10 16:16:20,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:20,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:20,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:20,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:20,196 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 41 [2021-06-10 16:16:20,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 31.428571428571427) internal successors, (220), 7 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:20,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 41 [2021-06-10 16:16:20,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:20,380 INFO L129 PetriNetUnfolder]: 102/434 cut-off events. [2021-06-10 16:16:20,380 INFO L130 PetriNetUnfolder]: For 30/31 co-relation queries the response was YES. [2021-06-10 16:16:20,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 434 events. 102/434 cut-off events. For 30/31 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2930 event pairs, 18 based on Foata normal form. 2/412 useless extension candidates. Maximal degree in co-relation 727. Up to 69 conditions per place. [2021-06-10 16:16:20,391 INFO L132 encePairwiseOnDemand]: 32/41 looper letters, 20 selfloop transitions, 17 changer transitions 0/76 dead transitions. [2021-06-10 16:16:20,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 288 flow [2021-06-10 16:16:20,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 16:16:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 16:16:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 308 transitions. [2021-06-10 16:16:20,400 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8346883468834688 [2021-06-10 16:16:20,401 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 308 transitions. [2021-06-10 16:16:20,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 308 transitions. [2021-06-10 16:16:20,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:20,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 308 transitions. [2021-06-10 16:16:20,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 34.22222222222222) internal successors, (308), 9 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,408 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,408 INFO L185 Difference]: Start difference. First operand has 51 places, 49 transitions, 160 flow. Second operand 9 states and 308 transitions. [2021-06-10 16:16:20,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 288 flow [2021-06-10 16:16:20,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 76 transitions, 284 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-06-10 16:16:20,414 INFO L241 Difference]: Finished difference. Result has 62 places, 66 transitions, 272 flow [2021-06-10 16:16:20,414 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=272, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2021-06-10 16:16:20,414 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2021-06-10 16:16:20,415 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 272 flow [2021-06-10 16:16:20,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.428571428571427) internal successors, (220), 7 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,415 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:20,415 INFO L263 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] [2021-06-10 16:16:20,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 16:16:20,416 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:20,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:20,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1985602878, now seen corresponding path program 3 times [2021-06-10 16:16:20,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:20,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67764694] [2021-06-10 16:16:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:20,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:20,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:20,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:20,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:20,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:20,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:20,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:20,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:20,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67764694] [2021-06-10 16:16:20,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:20,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 16:16:20,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068467632] [2021-06-10 16:16:20,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:20,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:20,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:20,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:20,521 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:20,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:20,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:20,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:20,822 INFO L129 PetriNetUnfolder]: 209/702 cut-off events. [2021-06-10 16:16:20,822 INFO L130 PetriNetUnfolder]: For 280/334 co-relation queries the response was YES. [2021-06-10 16:16:20,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1685 conditions, 702 events. 209/702 cut-off events. For 280/334 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5142 event pairs, 61 based on Foata normal form. 21/705 useless extension candidates. Maximal degree in co-relation 1589. Up to 176 conditions per place. [2021-06-10 16:16:20,831 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 13 selfloop transitions, 33 changer transitions 0/91 dead transitions. [2021-06-10 16:16:20,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 473 flow [2021-06-10 16:16:20,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-10 16:16:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-06-10 16:16:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 493 transitions. [2021-06-10 16:16:20,840 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8588850174216028 [2021-06-10 16:16:20,840 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 493 transitions. [2021-06-10 16:16:20,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 493 transitions. [2021-06-10 16:16:20,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:20,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 493 transitions. [2021-06-10 16:16:20,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 35.214285714285715) internal successors, (493), 14 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 41.0) internal successors, (615), 15 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,847 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 41.0) internal successors, (615), 15 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,847 INFO L185 Difference]: Start difference. First operand has 62 places, 66 transitions, 272 flow. Second operand 14 states and 493 transitions. [2021-06-10 16:16:20,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 473 flow [2021-06-10 16:16:20,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 473 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 16:16:20,857 INFO L241 Difference]: Finished difference. Result has 78 places, 89 transitions, 482 flow [2021-06-10 16:16:20,857 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=482, PETRI_PLACES=78, PETRI_TRANSITIONS=89} [2021-06-10 16:16:20,857 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2021-06-10 16:16:20,858 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 89 transitions, 482 flow [2021-06-10 16:16:20,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,858 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:20,858 INFO L263 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] [2021-06-10 16:16:20,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 16:16:20,858 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:20,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1371059384, now seen corresponding path program 4 times [2021-06-10 16:16:20,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:20,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475436752] [2021-06-10 16:16:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:20,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:20,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:20,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:20,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:20,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475436752] [2021-06-10 16:16:20,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:20,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 16:16:20,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610044215] [2021-06-10 16:16:20,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 16:16:20,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:20,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 16:16:20,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 16:16:20,914 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 41 [2021-06-10 16:16:20,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 89 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:20,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 41 [2021-06-10 16:16:20,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:20,978 INFO L129 PetriNetUnfolder]: 126/536 cut-off events. [2021-06-10 16:16:20,978 INFO L130 PetriNetUnfolder]: For 315/320 co-relation queries the response was YES. [2021-06-10 16:16:20,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 536 events. 126/536 cut-off events. For 315/320 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3913 event pairs, 29 based on Foata normal form. 3/518 useless extension candidates. Maximal degree in co-relation 1215. Up to 105 conditions per place. [2021-06-10 16:16:20,984 INFO L132 encePairwiseOnDemand]: 38/41 looper letters, 2 selfloop transitions, 2 changer transitions 2/88 dead transitions. [2021-06-10 16:16:20,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 88 transitions, 484 flow [2021-06-10 16:16:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 16:16:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 16:16:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2021-06-10 16:16:20,986 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9186991869918699 [2021-06-10 16:16:20,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2021-06-10 16:16:20,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2021-06-10 16:16:20,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:20,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2021-06-10 16:16:20,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,988 INFO L185 Difference]: Start difference. First operand has 78 places, 89 transitions, 482 flow. Second operand 3 states and 113 transitions. [2021-06-10 16:16:20,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 88 transitions, 484 flow [2021-06-10 16:16:20,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 448 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-06-10 16:16:20,995 INFO L241 Difference]: Finished difference. Result has 79 places, 86 transitions, 433 flow [2021-06-10 16:16:20,995 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=433, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2021-06-10 16:16:20,995 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2021-06-10 16:16:20,995 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 433 flow [2021-06-10 16:16:20,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:20,996 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:20,996 INFO L263 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] [2021-06-10 16:16:20,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 16:16:20,996 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:20,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:20,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1964257370, now seen corresponding path program 5 times [2021-06-10 16:16:20,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:20,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077169109] [2021-06-10 16:16:20,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:21,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:21,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:21,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:21,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:21,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:21,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:21,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:21,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:21,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077169109] [2021-06-10 16:16:21,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:21,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 16:16:21,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048268465] [2021-06-10 16:16:21,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:21,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:21,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:21,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:21,070 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:21,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 433 flow. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:21,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:21,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:21,340 INFO L129 PetriNetUnfolder]: 184/880 cut-off events. [2021-06-10 16:16:21,341 INFO L130 PetriNetUnfolder]: For 550/623 co-relation queries the response was YES. [2021-06-10 16:16:21,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2285 conditions, 880 events. 184/880 cut-off events. For 550/623 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7615 event pairs, 10 based on Foata normal form. 26/890 useless extension candidates. Maximal degree in co-relation 2099. Up to 190 conditions per place. [2021-06-10 16:16:21,347 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 42 selfloop transitions, 43 changer transitions 4/133 dead transitions. [2021-06-10 16:16:21,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 133 transitions, 887 flow [2021-06-10 16:16:21,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-10 16:16:21,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-10 16:16:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 566 transitions. [2021-06-10 16:16:21,350 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8628048780487805 [2021-06-10 16:16:21,350 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 566 transitions. [2021-06-10 16:16:21,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 566 transitions. [2021-06-10 16:16:21,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:21,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 566 transitions. [2021-06-10 16:16:21,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 35.375) internal successors, (566), 16 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 41.0) internal successors, (697), 17 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,353 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 41.0) internal successors, (697), 17 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,354 INFO L185 Difference]: Start difference. First operand has 79 places, 86 transitions, 433 flow. Second operand 16 states and 566 transitions. [2021-06-10 16:16:21,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 133 transitions, 887 flow [2021-06-10 16:16:21,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 133 transitions, 875 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-06-10 16:16:21,362 INFO L241 Difference]: Finished difference. Result has 99 places, 123 transitions, 813 flow [2021-06-10 16:16:21,363 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=813, PETRI_PLACES=99, PETRI_TRANSITIONS=123} [2021-06-10 16:16:21,363 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 53 predicate places. [2021-06-10 16:16:21,363 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 123 transitions, 813 flow [2021-06-10 16:16:21,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,363 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:21,363 INFO L263 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] [2021-06-10 16:16:21,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 16:16:21,364 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:21,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:21,364 INFO L82 PathProgramCache]: Analyzing trace with hash 815954836, now seen corresponding path program 6 times [2021-06-10 16:16:21,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:21,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735851952] [2021-06-10 16:16:21,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:21,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:21,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:21,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:21,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:21,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:21,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:21,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:21,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:21,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735851952] [2021-06-10 16:16:21,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:21,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 16:16:21,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217146066] [2021-06-10 16:16:21,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:21,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:21,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:21,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:21,418 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:21,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 123 transitions, 813 flow. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:21,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:21,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:21,703 INFO L129 PetriNetUnfolder]: 185/986 cut-off events. [2021-06-10 16:16:21,704 INFO L130 PetriNetUnfolder]: For 1292/1452 co-relation queries the response was YES. [2021-06-10 16:16:21,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 986 events. 185/986 cut-off events. For 1292/1452 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8998 event pairs, 1 based on Foata normal form. 53/1020 useless extension candidates. Maximal degree in co-relation 2808. Up to 225 conditions per place. [2021-06-10 16:16:21,713 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 49 selfloop transitions, 45 changer transitions 3/141 dead transitions. [2021-06-10 16:16:21,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 141 transitions, 1160 flow [2021-06-10 16:16:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 16:16:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 16:16:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 458 transitions. [2021-06-10 16:16:21,715 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8592870544090057 [2021-06-10 16:16:21,715 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 458 transitions. [2021-06-10 16:16:21,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 458 transitions. [2021-06-10 16:16:21,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:21,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 458 transitions. [2021-06-10 16:16:21,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 35.23076923076923) internal successors, (458), 13 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 41.0) internal successors, (574), 14 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,718 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 41.0) internal successors, (574), 14 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,718 INFO L185 Difference]: Start difference. First operand has 99 places, 123 transitions, 813 flow. Second operand 13 states and 458 transitions. [2021-06-10 16:16:21,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 141 transitions, 1160 flow [2021-06-10 16:16:21,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 141 transitions, 1050 flow, removed 55 selfloop flow, removed 1 redundant places. [2021-06-10 16:16:21,733 INFO L241 Difference]: Finished difference. Result has 111 places, 132 transitions, 901 flow [2021-06-10 16:16:21,734 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=901, PETRI_PLACES=111, PETRI_TRANSITIONS=132} [2021-06-10 16:16:21,734 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 65 predicate places. [2021-06-10 16:16:21,734 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 132 transitions, 901 flow [2021-06-10 16:16:21,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,734 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:21,734 INFO L263 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] [2021-06-10 16:16:21,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 16:16:21,734 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:21,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:21,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1067115664, now seen corresponding path program 7 times [2021-06-10 16:16:21,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:21,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642253245] [2021-06-10 16:16:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:21,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:21,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:21,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:21,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642253245] [2021-06-10 16:16:21,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:21,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 16:16:21,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271072637] [2021-06-10 16:16:21,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 16:16:21,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:21,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 16:16:21,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 16:16:21,752 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 41 [2021-06-10 16:16:21,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 132 transitions, 901 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:21,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 41 [2021-06-10 16:16:21,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:21,848 INFO L129 PetriNetUnfolder]: 179/974 cut-off events. [2021-06-10 16:16:21,849 INFO L130 PetriNetUnfolder]: For 1188/1238 co-relation queries the response was YES. [2021-06-10 16:16:21,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2569 conditions, 974 events. 179/974 cut-off events. For 1188/1238 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8837 event pairs, 6 based on Foata normal form. 7/960 useless extension candidates. Maximal degree in co-relation 2472. Up to 149 conditions per place. [2021-06-10 16:16:21,857 INFO L132 encePairwiseOnDemand]: 38/41 looper letters, 2 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2021-06-10 16:16:21,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 132 transitions, 909 flow [2021-06-10 16:16:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 16:16:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 16:16:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2021-06-10 16:16:21,858 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9186991869918699 [2021-06-10 16:16:21,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2021-06-10 16:16:21,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2021-06-10 16:16:21,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:21,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2021-06-10 16:16:21,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,859 INFO L185 Difference]: Start difference. First operand has 111 places, 132 transitions, 901 flow. Second operand 3 states and 113 transitions. [2021-06-10 16:16:21,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 132 transitions, 909 flow [2021-06-10 16:16:21,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 132 transitions, 854 flow, removed 19 selfloop flow, removed 3 redundant places. [2021-06-10 16:16:21,875 INFO L241 Difference]: Finished difference. Result has 109 places, 132 transitions, 854 flow [2021-06-10 16:16:21,875 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=854, PETRI_PLACES=109, PETRI_TRANSITIONS=132} [2021-06-10 16:16:21,875 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2021-06-10 16:16:21,875 INFO L480 AbstractCegarLoop]: Abstraction has has 109 places, 132 transitions, 854 flow [2021-06-10 16:16:21,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,876 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:21,876 INFO L263 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] [2021-06-10 16:16:21,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 16:16:21,876 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:21,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:21,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1905452252, now seen corresponding path program 8 times [2021-06-10 16:16:21,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:21,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198199399] [2021-06-10 16:16:21,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:21,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:21,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:21,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:21,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:21,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:21,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:21,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:21,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:21,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:21,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198199399] [2021-06-10 16:16:21,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:21,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 16:16:21,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409384838] [2021-06-10 16:16:21,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:21,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:21,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:21,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:21,959 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:21,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 132 transitions, 854 flow. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:21,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:21,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:21,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:22,218 INFO L129 PetriNetUnfolder]: 184/1225 cut-off events. [2021-06-10 16:16:22,218 INFO L130 PetriNetUnfolder]: For 1341/1574 co-relation queries the response was YES. [2021-06-10 16:16:22,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3383 conditions, 1225 events. 184/1225 cut-off events. For 1341/1574 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12259 event pairs, 2 based on Foata normal form. 70/1267 useless extension candidates. Maximal degree in co-relation 3070. Up to 245 conditions per place. [2021-06-10 16:16:22,228 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 52 selfloop transitions, 58 changer transitions 3/157 dead transitions. [2021-06-10 16:16:22,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 157 transitions, 1274 flow [2021-06-10 16:16:22,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 16:16:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 16:16:22,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 458 transitions. [2021-06-10 16:16:22,230 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8592870544090057 [2021-06-10 16:16:22,230 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 458 transitions. [2021-06-10 16:16:22,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 458 transitions. [2021-06-10 16:16:22,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:22,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 458 transitions. [2021-06-10 16:16:22,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 35.23076923076923) internal successors, (458), 13 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:22,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 41.0) internal successors, (574), 14 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:22,234 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 41.0) internal successors, (574), 14 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:22,234 INFO L185 Difference]: Start difference. First operand has 109 places, 132 transitions, 854 flow. Second operand 13 states and 458 transitions. [2021-06-10 16:16:22,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 157 transitions, 1274 flow [2021-06-10 16:16:22,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 157 transitions, 1270 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 16:16:22,248 INFO L241 Difference]: Finished difference. Result has 126 places, 149 transitions, 1181 flow [2021-06-10 16:16:22,248 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1181, PETRI_PLACES=126, PETRI_TRANSITIONS=149} [2021-06-10 16:16:22,248 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 80 predicate places. [2021-06-10 16:16:22,248 INFO L480 AbstractCegarLoop]: Abstraction has has 126 places, 149 transitions, 1181 flow [2021-06-10 16:16:22,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:22,249 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:22,249 INFO L263 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] [2021-06-10 16:16:22,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 16:16:22,250 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:22,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:22,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1025455732, now seen corresponding path program 9 times [2021-06-10 16:16:22,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:22,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619969083] [2021-06-10 16:16:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:22,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:22,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:22,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:22,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:22,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:22,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:22,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:22,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:22,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:22,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619969083] [2021-06-10 16:16:22,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:22,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-10 16:16:22,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977693675] [2021-06-10 16:16:22,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 16:16:22,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:22,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 16:16:22,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-10 16:16:22,374 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 41 [2021-06-10 16:16:22,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 149 transitions, 1181 flow. Second operand has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:22,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:22,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 41 [2021-06-10 16:16:22,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:22,775 INFO L129 PetriNetUnfolder]: 392/2229 cut-off events. [2021-06-10 16:16:22,775 INFO L130 PetriNetUnfolder]: For 4075/4384 co-relation queries the response was YES. [2021-06-10 16:16:22,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6938 conditions, 2229 events. 392/2229 cut-off events. For 4075/4384 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 24655 event pairs, 19 based on Foata normal form. 77/2283 useless extension candidates. Maximal degree in co-relation 6868. Up to 315 conditions per place. [2021-06-10 16:16:22,799 INFO L132 encePairwiseOnDemand]: 31/41 looper letters, 28 selfloop transitions, 23 changer transitions 0/174 dead transitions. [2021-06-10 16:16:22,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 174 transitions, 1406 flow [2021-06-10 16:16:22,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 16:16:22,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 16:16:22,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 342 transitions. [2021-06-10 16:16:22,801 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8341463414634146 [2021-06-10 16:16:22,801 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 342 transitions. [2021-06-10 16:16:22,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 342 transitions. [2021-06-10 16:16:22,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:22,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 342 transitions. [2021-06-10 16:16:22,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 34.2) internal successors, (342), 10 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:22,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 41.0) internal successors, (451), 11 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:22,803 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 41.0) internal successors, (451), 11 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:22,803 INFO L185 Difference]: Start difference. First operand has 126 places, 149 transitions, 1181 flow. Second operand 10 states and 342 transitions. [2021-06-10 16:16:22,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 174 transitions, 1406 flow [2021-06-10 16:16:22,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 174 transitions, 1361 flow, removed 18 selfloop flow, removed 3 redundant places. [2021-06-10 16:16:22,843 INFO L241 Difference]: Finished difference. Result has 134 places, 163 transitions, 1304 flow [2021-06-10 16:16:22,844 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1304, PETRI_PLACES=134, PETRI_TRANSITIONS=163} [2021-06-10 16:16:22,844 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 88 predicate places. [2021-06-10 16:16:22,844 INFO L480 AbstractCegarLoop]: Abstraction has has 134 places, 163 transitions, 1304 flow [2021-06-10 16:16:22,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:22,844 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:22,844 INFO L263 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] [2021-06-10 16:16:22,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 16:16:22,845 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:22,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:22,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1612862054, now seen corresponding path program 10 times [2021-06-10 16:16:22,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:22,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477988474] [2021-06-10 16:16:22,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:22,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:22,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:22,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:22,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:22,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:22,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:22,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:22,912 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-06-10 16:16:22,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:22,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:22,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:22,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477988474] [2021-06-10 16:16:22,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:22,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-10 16:16:22,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296007993] [2021-06-10 16:16:22,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 16:16:22,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:22,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 16:16:22,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-10 16:16:22,930 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 41 [2021-06-10 16:16:22,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 163 transitions, 1304 flow. Second operand has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:22,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:22,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 41 [2021-06-10 16:16:22,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:23,337 INFO L129 PetriNetUnfolder]: 491/2501 cut-off events. [2021-06-10 16:16:23,337 INFO L130 PetriNetUnfolder]: For 6161/6561 co-relation queries the response was YES. [2021-06-10 16:16:23,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8484 conditions, 2501 events. 491/2501 cut-off events. For 6161/6561 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 27644 event pairs, 14 based on Foata normal form. 83/2561 useless extension candidates. Maximal degree in co-relation 7845. Up to 294 conditions per place. [2021-06-10 16:16:23,366 INFO L132 encePairwiseOnDemand]: 31/41 looper letters, 35 selfloop transitions, 30 changer transitions 0/188 dead transitions. [2021-06-10 16:16:23,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 188 transitions, 1611 flow [2021-06-10 16:16:23,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 16:16:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 16:16:23,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 339 transitions. [2021-06-10 16:16:23,369 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8268292682926829 [2021-06-10 16:16:23,369 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 339 transitions. [2021-06-10 16:16:23,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 339 transitions. [2021-06-10 16:16:23,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:23,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 339 transitions. [2021-06-10 16:16:23,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.9) internal successors, (339), 10 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:23,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 41.0) internal successors, (451), 11 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:23,373 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 41.0) internal successors, (451), 11 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:23,373 INFO L185 Difference]: Start difference. First operand has 134 places, 163 transitions, 1304 flow. Second operand 10 states and 339 transitions. [2021-06-10 16:16:23,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 188 transitions, 1611 flow [2021-06-10 16:16:23,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 188 transitions, 1574 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-06-10 16:16:23,426 INFO L241 Difference]: Finished difference. Result has 147 places, 176 transitions, 1482 flow [2021-06-10 16:16:23,427 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1482, PETRI_PLACES=147, PETRI_TRANSITIONS=176} [2021-06-10 16:16:23,427 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 101 predicate places. [2021-06-10 16:16:23,427 INFO L480 AbstractCegarLoop]: Abstraction has has 147 places, 176 transitions, 1482 flow [2021-06-10 16:16:23,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:23,427 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:23,427 INFO L263 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] [2021-06-10 16:16:23,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 16:16:23,429 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1360769404, now seen corresponding path program 11 times [2021-06-10 16:16:23,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:23,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169378197] [2021-06-10 16:16:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:23,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:23,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:23,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:23,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:23,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:23,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:23,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:23,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:23,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:23,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:23,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:23,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:23,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:23,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:23,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:23,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:23,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169378197] [2021-06-10 16:16:23,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:23,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 16:16:23,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486338379] [2021-06-10 16:16:23,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:23,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:23,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:23,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:23,508 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:23,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 176 transitions, 1482 flow. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:23,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:23,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:23,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:23,988 INFO L129 PetriNetUnfolder]: 471/2623 cut-off events. [2021-06-10 16:16:23,988 INFO L130 PetriNetUnfolder]: For 6243/6864 co-relation queries the response was YES. [2021-06-10 16:16:24,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9661 conditions, 2623 events. 471/2623 cut-off events. For 6243/6864 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 30130 event pairs, 7 based on Foata normal form. 242/2849 useless extension candidates. Maximal degree in co-relation 8866. Up to 528 conditions per place. [2021-06-10 16:16:24,021 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 53 selfloop transitions, 70 changer transitions 0/194 dead transitions. [2021-06-10 16:16:24,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 194 transitions, 1897 flow [2021-06-10 16:16:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-10 16:16:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-10 16:16:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 534 transitions. [2021-06-10 16:16:24,024 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8682926829268293 [2021-06-10 16:16:24,024 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 534 transitions. [2021-06-10 16:16:24,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 534 transitions. [2021-06-10 16:16:24,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:24,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 534 transitions. [2021-06-10 16:16:24,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 35.6) internal successors, (534), 15 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:24,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 41.0) internal successors, (656), 16 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:24,028 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 41.0) internal successors, (656), 16 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:24,028 INFO L185 Difference]: Start difference. First operand has 147 places, 176 transitions, 1482 flow. Second operand 15 states and 534 transitions. [2021-06-10 16:16:24,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 194 transitions, 1897 flow [2021-06-10 16:16:24,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 194 transitions, 1881 flow, removed 8 selfloop flow, removed 0 redundant places. [2021-06-10 16:16:24,083 INFO L241 Difference]: Finished difference. Result has 165 places, 189 transitions, 1790 flow [2021-06-10 16:16:24,083 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1790, PETRI_PLACES=165, PETRI_TRANSITIONS=189} [2021-06-10 16:16:24,083 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 119 predicate places. [2021-06-10 16:16:24,084 INFO L480 AbstractCegarLoop]: Abstraction has has 165 places, 189 transitions, 1790 flow [2021-06-10 16:16:24,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:24,084 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:24,084 INFO L263 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] [2021-06-10 16:16:24,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-10 16:16:24,084 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:24,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:24,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1163048688, now seen corresponding path program 12 times [2021-06-10 16:16:24,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:24,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90609599] [2021-06-10 16:16:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:24,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:24,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:24,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:24,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:24,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:24,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:24,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:24,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 16:16:24,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:24,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:24,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90609599] [2021-06-10 16:16:24,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:24,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-10 16:16:24,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215698453] [2021-06-10 16:16:24,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 16:16:24,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:24,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 16:16:24,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-10 16:16:24,153 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 41 [2021-06-10 16:16:24,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 189 transitions, 1790 flow. Second operand has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:24,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:24,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 41 [2021-06-10 16:16:24,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:24,603 INFO L129 PetriNetUnfolder]: 497/2734 cut-off events. [2021-06-10 16:16:24,603 INFO L130 PetriNetUnfolder]: For 9335/9892 co-relation queries the response was YES. [2021-06-10 16:16:24,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10709 conditions, 2734 events. 497/2734 cut-off events. For 9335/9892 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 31501 event pairs, 19 based on Foata normal form. 179/2904 useless extension candidates. Maximal degree in co-relation 9844. Up to 320 conditions per place. [2021-06-10 16:16:24,635 INFO L132 encePairwiseOnDemand]: 31/41 looper letters, 33 selfloop transitions, 32 changer transitions 0/201 dead transitions. [2021-06-10 16:16:24,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 201 transitions, 2010 flow [2021-06-10 16:16:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 16:16:24,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 16:16:24,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 340 transitions. [2021-06-10 16:16:24,636 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8292682926829268 [2021-06-10 16:16:24,636 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 340 transitions. [2021-06-10 16:16:24,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 340 transitions. [2021-06-10 16:16:24,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:24,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 340 transitions. [2021-06-10 16:16:24,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:24,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 41.0) internal successors, (451), 11 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:24,638 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 41.0) internal successors, (451), 11 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:24,639 INFO L185 Difference]: Start difference. First operand has 165 places, 189 transitions, 1790 flow. Second operand 10 states and 340 transitions. [2021-06-10 16:16:24,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 201 transitions, 2010 flow [2021-06-10 16:16:24,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 201 transitions, 1926 flow, removed 34 selfloop flow, removed 2 redundant places. [2021-06-10 16:16:24,714 INFO L241 Difference]: Finished difference. Result has 175 places, 193 transitions, 1830 flow [2021-06-10 16:16:24,714 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1830, PETRI_PLACES=175, PETRI_TRANSITIONS=193} [2021-06-10 16:16:24,714 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 129 predicate places. [2021-06-10 16:16:24,714 INFO L480 AbstractCegarLoop]: Abstraction has has 175 places, 193 transitions, 1830 flow [2021-06-10 16:16:24,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:24,715 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:24,715 INFO L263 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] [2021-06-10 16:16:24,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-10 16:16:24,715 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:24,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:24,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1958489322, now seen corresponding path program 13 times [2021-06-10 16:16:24,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:24,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930066332] [2021-06-10 16:16:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:24,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:24,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:24,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:24,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:24,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:24,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:24,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:24,771 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-06-10 16:16:24,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 16:16:24,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:24,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:24,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930066332] [2021-06-10 16:16:24,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:24,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-10 16:16:24,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176256010] [2021-06-10 16:16:24,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 16:16:24,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:24,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 16:16:24,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-10 16:16:24,787 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 41 [2021-06-10 16:16:24,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 193 transitions, 1830 flow. Second operand has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:24,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:24,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 41 [2021-06-10 16:16:24,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:25,196 INFO L129 PetriNetUnfolder]: 402/2562 cut-off events. [2021-06-10 16:16:25,197 INFO L130 PetriNetUnfolder]: For 8752/9235 co-relation queries the response was YES. [2021-06-10 16:16:25,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9806 conditions, 2562 events. 402/2562 cut-off events. For 8752/9235 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 29843 event pairs, 18 based on Foata normal form. 157/2701 useless extension candidates. Maximal degree in co-relation 8997. Up to 264 conditions per place. [2021-06-10 16:16:25,225 INFO L132 encePairwiseOnDemand]: 31/41 looper letters, 33 selfloop transitions, 30 changer transitions 0/199 dead transitions. [2021-06-10 16:16:25,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 199 transitions, 1989 flow [2021-06-10 16:16:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 16:16:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 16:16:25,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 339 transitions. [2021-06-10 16:16:25,226 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8268292682926829 [2021-06-10 16:16:25,227 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 339 transitions. [2021-06-10 16:16:25,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 339 transitions. [2021-06-10 16:16:25,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:25,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 339 transitions. [2021-06-10 16:16:25,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.9) internal successors, (339), 10 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:25,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 41.0) internal successors, (451), 11 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:25,229 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 41.0) internal successors, (451), 11 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:25,229 INFO L185 Difference]: Start difference. First operand has 175 places, 193 transitions, 1830 flow. Second operand 10 states and 339 transitions. [2021-06-10 16:16:25,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 199 transitions, 1989 flow [2021-06-10 16:16:25,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 199 transitions, 1946 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 16:16:25,297 INFO L241 Difference]: Finished difference. Result has 180 places, 191 transitions, 1826 flow [2021-06-10 16:16:25,297 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1826, PETRI_PLACES=180, PETRI_TRANSITIONS=191} [2021-06-10 16:16:25,297 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 134 predicate places. [2021-06-10 16:16:25,298 INFO L480 AbstractCegarLoop]: Abstraction has has 180 places, 191 transitions, 1826 flow [2021-06-10 16:16:25,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:25,298 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:25,298 INFO L263 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] [2021-06-10 16:16:25,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-10 16:16:25,298 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:25,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:25,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1812136958, now seen corresponding path program 14 times [2021-06-10 16:16:25,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:25,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034860030] [2021-06-10 16:16:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:25,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:25,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:25,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:25,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:25,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:25,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:25,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:25,387 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-06-10 16:16:25,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:25,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:25,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034860030] [2021-06-10 16:16:25,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:25,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-10 16:16:25,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232098487] [2021-06-10 16:16:25,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 16:16:25,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:25,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 16:16:25,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-10 16:16:25,402 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 41 [2021-06-10 16:16:25,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 191 transitions, 1826 flow. Second operand has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:25,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:25,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 41 [2021-06-10 16:16:25,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:25,770 INFO L129 PetriNetUnfolder]: 330/2111 cut-off events. [2021-06-10 16:16:25,770 INFO L130 PetriNetUnfolder]: For 7310/7750 co-relation queries the response was YES. [2021-06-10 16:16:25,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8202 conditions, 2111 events. 330/2111 cut-off events. For 7310/7750 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 23502 event pairs, 17 based on Foata normal form. 117/2219 useless extension candidates. Maximal degree in co-relation 7840. Up to 232 conditions per place. [2021-06-10 16:16:25,792 INFO L132 encePairwiseOnDemand]: 31/41 looper letters, 35 selfloop transitions, 26 changer transitions 0/197 dead transitions. [2021-06-10 16:16:25,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 197 transitions, 1985 flow [2021-06-10 16:16:25,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 16:16:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 16:16:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 341 transitions. [2021-06-10 16:16:25,793 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8317073170731707 [2021-06-10 16:16:25,794 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 341 transitions. [2021-06-10 16:16:25,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 341 transitions. [2021-06-10 16:16:25,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:25,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 341 transitions. [2021-06-10 16:16:25,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 34.1) internal successors, (341), 10 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:25,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 41.0) internal successors, (451), 11 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:25,795 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 41.0) internal successors, (451), 11 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:25,795 INFO L185 Difference]: Start difference. First operand has 180 places, 191 transitions, 1826 flow. Second operand 10 states and 341 transitions. [2021-06-10 16:16:25,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 197 transitions, 1985 flow [2021-06-10 16:16:25,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 197 transitions, 1928 flow, removed 2 selfloop flow, removed 7 redundant places. [2021-06-10 16:16:25,851 INFO L241 Difference]: Finished difference. Result has 183 places, 189 transitions, 1804 flow [2021-06-10 16:16:25,851 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1804, PETRI_PLACES=183, PETRI_TRANSITIONS=189} [2021-06-10 16:16:25,851 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 137 predicate places. [2021-06-10 16:16:25,851 INFO L480 AbstractCegarLoop]: Abstraction has has 183 places, 189 transitions, 1804 flow [2021-06-10 16:16:25,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:25,851 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:25,852 INFO L263 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] [2021-06-10 16:16:25,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-10 16:16:25,852 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:25,852 INFO L82 PathProgramCache]: Analyzing trace with hash -860508626, now seen corresponding path program 15 times [2021-06-10 16:16:25,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:25,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040090477] [2021-06-10 16:16:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:25,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:25,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:25,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:25,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:25,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:25,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:25,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:25,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:25,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:25,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040090477] [2021-06-10 16:16:25,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:25,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 16:16:25,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535347994] [2021-06-10 16:16:25,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:25,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:25,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:25,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:25,888 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:25,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 189 transitions, 1804 flow. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:25,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:25,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:25,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:26,278 INFO L129 PetriNetUnfolder]: 294/2049 cut-off events. [2021-06-10 16:16:26,279 INFO L130 PetriNetUnfolder]: For 6578/7271 co-relation queries the response was YES. [2021-06-10 16:16:26,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8104 conditions, 2049 events. 294/2049 cut-off events. For 6578/7271 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 23088 event pairs, 5 based on Foata normal form. 245/2287 useless extension candidates. Maximal degree in co-relation 7725. Up to 534 conditions per place. [2021-06-10 16:16:26,296 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 65 selfloop transitions, 54 changer transitions 5/195 dead transitions. [2021-06-10 16:16:26,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 195 transitions, 2129 flow [2021-06-10 16:16:26,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-10 16:16:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-10 16:16:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 426 transitions. [2021-06-10 16:16:26,297 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8658536585365854 [2021-06-10 16:16:26,297 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 426 transitions. [2021-06-10 16:16:26,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 426 transitions. [2021-06-10 16:16:26,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:26,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 426 transitions. [2021-06-10 16:16:26,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 35.5) internal successors, (426), 12 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:26,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:26,299 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:26,299 INFO L185 Difference]: Start difference. First operand has 183 places, 189 transitions, 1804 flow. Second operand 12 states and 426 transitions. [2021-06-10 16:16:26,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 195 transitions, 2129 flow [2021-06-10 16:16:26,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 195 transitions, 2069 flow, removed 2 selfloop flow, removed 9 redundant places. [2021-06-10 16:16:26,348 INFO L241 Difference]: Finished difference. Result has 188 places, 187 transitions, 1904 flow [2021-06-10 16:16:26,349 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1904, PETRI_PLACES=188, PETRI_TRANSITIONS=187} [2021-06-10 16:16:26,349 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 142 predicate places. [2021-06-10 16:16:26,349 INFO L480 AbstractCegarLoop]: Abstraction has has 188 places, 187 transitions, 1904 flow [2021-06-10 16:16:26,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:26,349 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:26,349 INFO L263 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] [2021-06-10 16:16:26,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-10 16:16:26,349 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:26,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:26,350 INFO L82 PathProgramCache]: Analyzing trace with hash 31087362, now seen corresponding path program 16 times [2021-06-10 16:16:26,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:26,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115821896] [2021-06-10 16:16:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:26,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:26,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:26,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:26,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:26,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:26,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:26,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:26,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:26,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115821896] [2021-06-10 16:16:26,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:26,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 16:16:26,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418887663] [2021-06-10 16:16:26,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:26,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:26,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:26,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:26,387 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:26,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 187 transitions, 1904 flow. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:26,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:26,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:26,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:26,773 INFO L129 PetriNetUnfolder]: 283/2127 cut-off events. [2021-06-10 16:16:26,773 INFO L130 PetriNetUnfolder]: For 8134/8954 co-relation queries the response was YES. [2021-06-10 16:16:26,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8737 conditions, 2127 events. 283/2127 cut-off events. For 8134/8954 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 24530 event pairs, 5 based on Foata normal form. 279/2398 useless extension candidates. Maximal degree in co-relation 8338. Up to 429 conditions per place. [2021-06-10 16:16:26,795 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 64 selfloop transitions, 76 changer transitions 0/211 dead transitions. [2021-06-10 16:16:26,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 211 transitions, 2510 flow [2021-06-10 16:16:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-10 16:16:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-10 16:16:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 534 transitions. [2021-06-10 16:16:26,796 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8682926829268293 [2021-06-10 16:16:26,796 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 534 transitions. [2021-06-10 16:16:26,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 534 transitions. [2021-06-10 16:16:26,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:26,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 534 transitions. [2021-06-10 16:16:26,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 35.6) internal successors, (534), 15 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:26,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 41.0) internal successors, (656), 16 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:26,799 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 41.0) internal successors, (656), 16 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:26,799 INFO L185 Difference]: Start difference. First operand has 188 places, 187 transitions, 1904 flow. Second operand 15 states and 534 transitions. [2021-06-10 16:16:26,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 211 transitions, 2510 flow [2021-06-10 16:16:26,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 211 transitions, 2396 flow, removed 23 selfloop flow, removed 7 redundant places. [2021-06-10 16:16:26,865 INFO L241 Difference]: Finished difference. Result has 196 places, 208 transitions, 2317 flow [2021-06-10 16:16:26,865 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1814, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2317, PETRI_PLACES=196, PETRI_TRANSITIONS=208} [2021-06-10 16:16:26,865 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 150 predicate places. [2021-06-10 16:16:26,866 INFO L480 AbstractCegarLoop]: Abstraction has has 196 places, 208 transitions, 2317 flow [2021-06-10 16:16:26,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:26,866 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:26,866 INFO L263 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] [2021-06-10 16:16:26,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-10 16:16:26,866 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:26,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:26,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1726897052, now seen corresponding path program 17 times [2021-06-10 16:16:26,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:26,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428383732] [2021-06-10 16:16:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:26,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:26,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:26,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:26,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:26,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:26,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:26,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:26,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:26,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:26,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428383732] [2021-06-10 16:16:26,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:26,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 16:16:26,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679318841] [2021-06-10 16:16:26,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:26,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:26,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:26,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:26,908 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:26,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 208 transitions, 2317 flow. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:26,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:26,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:26,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:27,294 INFO L129 PetriNetUnfolder]: 276/2194 cut-off events. [2021-06-10 16:16:27,294 INFO L130 PetriNetUnfolder]: For 10025/11000 co-relation queries the response was YES. [2021-06-10 16:16:27,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9348 conditions, 2194 events. 276/2194 cut-off events. For 10025/11000 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 25746 event pairs, 5 based on Foata normal form. 323/2509 useless extension candidates. Maximal degree in co-relation 8925. Up to 562 conditions per place. [2021-06-10 16:16:27,314 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 75 selfloop transitions, 57 changer transitions 9/212 dead transitions. [2021-06-10 16:16:27,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 212 transitions, 2659 flow [2021-06-10 16:16:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-10 16:16:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-10 16:16:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 426 transitions. [2021-06-10 16:16:27,316 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8658536585365854 [2021-06-10 16:16:27,316 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 426 transitions. [2021-06-10 16:16:27,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 426 transitions. [2021-06-10 16:16:27,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:27,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 426 transitions. [2021-06-10 16:16:27,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 35.5) internal successors, (426), 12 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:27,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:27,319 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:27,319 INFO L185 Difference]: Start difference. First operand has 196 places, 208 transitions, 2317 flow. Second operand 12 states and 426 transitions. [2021-06-10 16:16:27,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 212 transitions, 2659 flow [2021-06-10 16:16:27,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 212 transitions, 2590 flow, removed 24 selfloop flow, removed 3 redundant places. [2021-06-10 16:16:27,399 INFO L241 Difference]: Finished difference. Result has 207 places, 202 transitions, 2352 flow [2021-06-10 16:16:27,399 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2352, PETRI_PLACES=207, PETRI_TRANSITIONS=202} [2021-06-10 16:16:27,400 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 161 predicate places. [2021-06-10 16:16:27,400 INFO L480 AbstractCegarLoop]: Abstraction has has 207 places, 202 transitions, 2352 flow [2021-06-10 16:16:27,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:27,400 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:27,400 INFO L263 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] [2021-06-10 16:16:27,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-10 16:16:27,400 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:27,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:27,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2135772062, now seen corresponding path program 18 times [2021-06-10 16:16:27,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:27,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871883251] [2021-06-10 16:16:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:27,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:27,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:27,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:27,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:27,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:27,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:27,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:27,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:27,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:27,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:27,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:27,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:27,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:27,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:27,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:27,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:27,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871883251] [2021-06-10 16:16:27,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:27,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 16:16:27,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655332751] [2021-06-10 16:16:27,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:27,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:27,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:27,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:27,440 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:27,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 202 transitions, 2352 flow. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:27,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:27,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:27,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:27,870 INFO L129 PetriNetUnfolder]: 274/2373 cut-off events. [2021-06-10 16:16:27,871 INFO L130 PetriNetUnfolder]: For 11428/12326 co-relation queries the response was YES. [2021-06-10 16:16:27,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10250 conditions, 2373 events. 274/2373 cut-off events. For 11428/12326 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 28626 event pairs, 5 based on Foata normal form. 280/2645 useless extension candidates. Maximal degree in co-relation 10064. Up to 577 conditions per place. [2021-06-10 16:16:27,893 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 90 selfloop transitions, 59 changer transitions 2/222 dead transitions. [2021-06-10 16:16:27,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 222 transitions, 2891 flow [2021-06-10 16:16:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-10 16:16:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-10 16:16:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 563 transitions. [2021-06-10 16:16:27,895 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8582317073170732 [2021-06-10 16:16:27,895 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 563 transitions. [2021-06-10 16:16:27,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 563 transitions. [2021-06-10 16:16:27,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:27,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 563 transitions. [2021-06-10 16:16:27,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 35.1875) internal successors, (563), 16 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:27,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 41.0) internal successors, (697), 17 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:27,897 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 41.0) internal successors, (697), 17 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:27,897 INFO L185 Difference]: Start difference. First operand has 207 places, 202 transitions, 2352 flow. Second operand 16 states and 563 transitions. [2021-06-10 16:16:27,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 222 transitions, 2891 flow [2021-06-10 16:16:27,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 222 transitions, 2762 flow, removed 19 selfloop flow, removed 11 redundant places. [2021-06-10 16:16:27,979 INFO L241 Difference]: Finished difference. Result has 212 places, 213 transitions, 2552 flow [2021-06-10 16:16:27,979 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2552, PETRI_PLACES=212, PETRI_TRANSITIONS=213} [2021-06-10 16:16:27,980 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 166 predicate places. [2021-06-10 16:16:27,980 INFO L480 AbstractCegarLoop]: Abstraction has has 212 places, 213 transitions, 2552 flow [2021-06-10 16:16:27,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:27,980 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:27,980 INFO L263 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] [2021-06-10 16:16:27,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-10 16:16:27,980 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:27,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:27,980 INFO L82 PathProgramCache]: Analyzing trace with hash 326178646, now seen corresponding path program 19 times [2021-06-10 16:16:27,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:27,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305590361] [2021-06-10 16:16:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:27,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:27,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:27,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:27,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:28,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:28,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:28,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:28,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:28,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:28,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:28,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305590361] [2021-06-10 16:16:28,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:28,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 16:16:28,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959335486] [2021-06-10 16:16:28,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 16:16:28,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:28,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 16:16:28,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-10 16:16:28,027 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:28,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 213 transitions, 2552 flow. Second operand has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:28,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:28,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:28,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:28,473 INFO L129 PetriNetUnfolder]: 257/2470 cut-off events. [2021-06-10 16:16:28,473 INFO L130 PetriNetUnfolder]: For 10627/11532 co-relation queries the response was YES. [2021-06-10 16:16:28,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10523 conditions, 2470 events. 257/2470 cut-off events. For 10627/11532 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 30570 event pairs, 5 based on Foata normal form. 248/2710 useless extension candidates. Maximal degree in co-relation 10403. Up to 607 conditions per place. [2021-06-10 16:16:28,494 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 95 selfloop transitions, 58 changer transitions 0/224 dead transitions. [2021-06-10 16:16:28,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 224 transitions, 2988 flow [2021-06-10 16:16:28,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-10 16:16:28,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-10 16:16:28,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 559 transitions. [2021-06-10 16:16:28,496 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8521341463414634 [2021-06-10 16:16:28,496 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 559 transitions. [2021-06-10 16:16:28,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 559 transitions. [2021-06-10 16:16:28,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:28,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 559 transitions. [2021-06-10 16:16:28,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 34.9375) internal successors, (559), 16 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:28,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 41.0) internal successors, (697), 17 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:28,499 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 41.0) internal successors, (697), 17 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:28,499 INFO L185 Difference]: Start difference. First operand has 212 places, 213 transitions, 2552 flow. Second operand 16 states and 559 transitions. [2021-06-10 16:16:28,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 224 transitions, 2988 flow [2021-06-10 16:16:28,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 224 transitions, 2896 flow, removed 15 selfloop flow, removed 11 redundant places. [2021-06-10 16:16:28,579 INFO L241 Difference]: Finished difference. Result has 219 places, 223 transitions, 2771 flow [2021-06-10 16:16:28,580 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2462, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2771, PETRI_PLACES=219, PETRI_TRANSITIONS=223} [2021-06-10 16:16:28,580 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 173 predicate places. [2021-06-10 16:16:28,580 INFO L480 AbstractCegarLoop]: Abstraction has has 219 places, 223 transitions, 2771 flow [2021-06-10 16:16:28,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:28,580 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:28,580 INFO L263 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] [2021-06-10 16:16:28,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-10 16:16:28,580 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:28,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:28,581 INFO L82 PathProgramCache]: Analyzing trace with hash -344335414, now seen corresponding path program 20 times [2021-06-10 16:16:28,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:28,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21829549] [2021-06-10 16:16:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:28,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:28,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:28,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:28,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:28,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:28,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:28,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:28,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:28,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:28,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21829549] [2021-06-10 16:16:28,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:28,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 16:16:28,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748127034] [2021-06-10 16:16:28,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:28,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:28,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:28,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:28,621 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:28,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 223 transitions, 2771 flow. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:28,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:28,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:28,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:29,051 INFO L129 PetriNetUnfolder]: 257/2462 cut-off events. [2021-06-10 16:16:29,051 INFO L130 PetriNetUnfolder]: For 11975/13003 co-relation queries the response was YES. [2021-06-10 16:16:29,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10930 conditions, 2462 events. 257/2462 cut-off events. For 11975/13003 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 30475 event pairs, 5 based on Foata normal form. 211/2665 useless extension candidates. Maximal degree in co-relation 10462. Up to 761 conditions per place. [2021-06-10 16:16:29,070 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 118 selfloop transitions, 16 changer transitions 18/223 dead transitions. [2021-06-10 16:16:29,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 223 transitions, 3075 flow [2021-06-10 16:16:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 16:16:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 16:16:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 315 transitions. [2021-06-10 16:16:29,071 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8536585365853658 [2021-06-10 16:16:29,071 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 315 transitions. [2021-06-10 16:16:29,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 315 transitions. [2021-06-10 16:16:29,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:29,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 315 transitions. [2021-06-10 16:16:29,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:29,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:29,073 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:29,073 INFO L185 Difference]: Start difference. First operand has 219 places, 223 transitions, 2771 flow. Second operand 9 states and 315 transitions. [2021-06-10 16:16:29,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 223 transitions, 3075 flow [2021-06-10 16:16:29,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 223 transitions, 2946 flow, removed 32 selfloop flow, removed 9 redundant places. [2021-06-10 16:16:29,163 INFO L241 Difference]: Finished difference. Result has 219 places, 205 transitions, 2491 flow [2021-06-10 16:16:29,164 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2642, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2491, PETRI_PLACES=219, PETRI_TRANSITIONS=205} [2021-06-10 16:16:29,164 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 173 predicate places. [2021-06-10 16:16:29,164 INFO L480 AbstractCegarLoop]: Abstraction has has 219 places, 205 transitions, 2491 flow [2021-06-10 16:16:29,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:29,164 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:29,164 INFO L263 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] [2021-06-10 16:16:29,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-10 16:16:29,165 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:29,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:29,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1563799926, now seen corresponding path program 21 times [2021-06-10 16:16:29,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:29,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768041717] [2021-06-10 16:16:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:29,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:29,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:29,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:29,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:29,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:29,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:29,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:29,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:29,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768041717] [2021-06-10 16:16:29,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:29,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 16:16:29,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599267381] [2021-06-10 16:16:29,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:29,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:29,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:29,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:29,198 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:29,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 205 transitions, 2491 flow. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:29,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:29,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:29,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:29,593 INFO L129 PetriNetUnfolder]: 224/2264 cut-off events. [2021-06-10 16:16:29,593 INFO L130 PetriNetUnfolder]: For 11380/12049 co-relation queries the response was YES. [2021-06-10 16:16:29,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9892 conditions, 2264 events. 224/2264 cut-off events. For 11380/12049 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 27561 event pairs, 5 based on Foata normal form. 244/2501 useless extension candidates. Maximal degree in co-relation 9710. Up to 531 conditions per place. [2021-06-10 16:16:29,609 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 77 selfloop transitions, 43 changer transitions 16/207 dead transitions. [2021-06-10 16:16:29,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 207 transitions, 2785 flow [2021-06-10 16:16:29,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-10 16:16:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-06-10 16:16:29,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 627 transitions. [2021-06-10 16:16:29,610 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8495934959349594 [2021-06-10 16:16:29,610 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 627 transitions. [2021-06-10 16:16:29,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 627 transitions. [2021-06-10 16:16:29,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:29,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 627 transitions. [2021-06-10 16:16:29,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 34.833333333333336) internal successors, (627), 18 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:29,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 41.0) internal successors, (779), 19 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:29,613 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 41.0) internal successors, (779), 19 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:29,613 INFO L185 Difference]: Start difference. First operand has 219 places, 205 transitions, 2491 flow. Second operand 18 states and 627 transitions. [2021-06-10 16:16:29,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 207 transitions, 2785 flow [2021-06-10 16:16:29,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 207 transitions, 2686 flow, removed 8 selfloop flow, removed 14 redundant places. [2021-06-10 16:16:29,684 INFO L241 Difference]: Finished difference. Result has 219 places, 191 transitions, 2381 flow [2021-06-10 16:16:29,684 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2381, PETRI_PLACES=219, PETRI_TRANSITIONS=191} [2021-06-10 16:16:29,684 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 173 predicate places. [2021-06-10 16:16:29,684 INFO L480 AbstractCegarLoop]: Abstraction has has 219 places, 191 transitions, 2381 flow [2021-06-10 16:16:29,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:29,684 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:29,684 INFO L263 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] [2021-06-10 16:16:29,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-10 16:16:29,684 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:29,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:29,685 INFO L82 PathProgramCache]: Analyzing trace with hash -669569538, now seen corresponding path program 22 times [2021-06-10 16:16:29,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:29,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358082916] [2021-06-10 16:16:29,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:29,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:29,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:29,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:29,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:29,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:29,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:29,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:29,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:29,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:29,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358082916] [2021-06-10 16:16:29,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:29,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 16:16:29,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335806502] [2021-06-10 16:16:29,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 16:16:29,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:29,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 16:16:29,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-10 16:16:29,734 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:29,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 191 transitions, 2381 flow. Second operand has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:29,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:29,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:29,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:30,176 INFO L129 PetriNetUnfolder]: 198/2050 cut-off events. [2021-06-10 16:16:30,176 INFO L130 PetriNetUnfolder]: For 10148/10654 co-relation queries the response was YES. [2021-06-10 16:16:30,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9167 conditions, 2050 events. 198/2050 cut-off events. For 10148/10654 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24397 event pairs, 5 based on Foata normal form. 197/2242 useless extension candidates. Maximal degree in co-relation 8770. Up to 239 conditions per place. [2021-06-10 16:16:30,190 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 49 selfloop transitions, 78 changer transitions 10/200 dead transitions. [2021-06-10 16:16:30,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 200 transitions, 2752 flow [2021-06-10 16:16:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-10 16:16:30,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-10 16:16:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 596 transitions. [2021-06-10 16:16:30,191 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8550932568149211 [2021-06-10 16:16:30,191 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 596 transitions. [2021-06-10 16:16:30,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 596 transitions. [2021-06-10 16:16:30,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:30,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 596 transitions. [2021-06-10 16:16:30,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 35.05882352941177) internal successors, (596), 17 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:30,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 41.0) internal successors, (738), 18 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:30,194 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 41.0) internal successors, (738), 18 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:30,194 INFO L185 Difference]: Start difference. First operand has 219 places, 191 transitions, 2381 flow. Second operand 17 states and 596 transitions. [2021-06-10 16:16:30,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 200 transitions, 2752 flow [2021-06-10 16:16:30,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 200 transitions, 2598 flow, removed 21 selfloop flow, removed 17 redundant places. [2021-06-10 16:16:30,254 INFO L241 Difference]: Finished difference. Result has 212 places, 184 transitions, 2377 flow [2021-06-10 16:16:30,255 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2377, PETRI_PLACES=212, PETRI_TRANSITIONS=184} [2021-06-10 16:16:30,255 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 166 predicate places. [2021-06-10 16:16:30,255 INFO L480 AbstractCegarLoop]: Abstraction has has 212 places, 184 transitions, 2377 flow [2021-06-10 16:16:30,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:30,255 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:30,255 INFO L263 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] [2021-06-10 16:16:30,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-10 16:16:30,255 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:30,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:30,256 INFO L82 PathProgramCache]: Analyzing trace with hash 681064776, now seen corresponding path program 23 times [2021-06-10 16:16:30,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:30,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525311116] [2021-06-10 16:16:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:30,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:30,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:30,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:30,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:30,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:30,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:30,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:30,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:30,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525311116] [2021-06-10 16:16:30,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:30,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 16:16:30,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298504064] [2021-06-10 16:16:30,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 16:16:30,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:30,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 16:16:30,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-10 16:16:30,299 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:30,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 184 transitions, 2377 flow. Second operand has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:30,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:30,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:30,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:30,684 INFO L129 PetriNetUnfolder]: 180/1996 cut-off events. [2021-06-10 16:16:30,684 INFO L130 PetriNetUnfolder]: For 6783/7196 co-relation queries the response was YES. [2021-06-10 16:16:30,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8395 conditions, 1996 events. 180/1996 cut-off events. For 6783/7196 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 23812 event pairs, 5 based on Foata normal form. 134/2124 useless extension candidates. Maximal degree in co-relation 8124. Up to 500 conditions per place. [2021-06-10 16:16:30,700 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 81 selfloop transitions, 32 changer transitions 9/185 dead transitions. [2021-06-10 16:16:30,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 185 transitions, 2636 flow [2021-06-10 16:16:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-10 16:16:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-10 16:16:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 420 transitions. [2021-06-10 16:16:30,702 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8536585365853658 [2021-06-10 16:16:30,702 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 420 transitions. [2021-06-10 16:16:30,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 420 transitions. [2021-06-10 16:16:30,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:30,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 420 transitions. [2021-06-10 16:16:30,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:30,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:30,703 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:30,703 INFO L185 Difference]: Start difference. First operand has 212 places, 184 transitions, 2377 flow. Second operand 12 states and 420 transitions. [2021-06-10 16:16:30,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 185 transitions, 2636 flow [2021-06-10 16:16:30,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 185 transitions, 2434 flow, removed 16 selfloop flow, removed 23 redundant places. [2021-06-10 16:16:30,764 INFO L241 Difference]: Finished difference. Result has 197 places, 176 transitions, 2173 flow [2021-06-10 16:16:30,764 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2176, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2173, PETRI_PLACES=197, PETRI_TRANSITIONS=176} [2021-06-10 16:16:30,764 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 151 predicate places. [2021-06-10 16:16:30,764 INFO L480 AbstractCegarLoop]: Abstraction has has 197 places, 176 transitions, 2173 flow [2021-06-10 16:16:30,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:30,765 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:30,765 INFO L263 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] [2021-06-10 16:16:30,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-10 16:16:30,765 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:30,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:30,765 INFO L82 PathProgramCache]: Analyzing trace with hash 209980472, now seen corresponding path program 24 times [2021-06-10 16:16:30,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:30,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573761578] [2021-06-10 16:16:30,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:30,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:30,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:30,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:30,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:30,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:30,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 16:16:30,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:30,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:30,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:30,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573761578] [2021-06-10 16:16:30,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:30,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 16:16:30,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156801881] [2021-06-10 16:16:30,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 16:16:30,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:30,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 16:16:30,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-10 16:16:30,809 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-06-10 16:16:30,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 176 transitions, 2173 flow. Second operand has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:30,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:30,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-06-10 16:16:30,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:31,152 INFO L129 PetriNetUnfolder]: 164/1837 cut-off events. [2021-06-10 16:16:31,153 INFO L130 PetriNetUnfolder]: For 5408/5772 co-relation queries the response was YES. [2021-06-10 16:16:31,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7511 conditions, 1837 events. 164/1837 cut-off events. For 5408/5772 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 21410 event pairs, 5 based on Foata normal form. 144/1975 useless extension candidates. Maximal degree in co-relation 7011. Up to 202 conditions per place. [2021-06-10 16:16:31,163 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 35 selfloop transitions, 79 changer transitions 26/182 dead transitions. [2021-06-10 16:16:31,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 182 transitions, 2468 flow [2021-06-10 16:16:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-10 16:16:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-10 16:16:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 558 transitions. [2021-06-10 16:16:31,164 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.850609756097561 [2021-06-10 16:16:31,164 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 558 transitions. [2021-06-10 16:16:31,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 558 transitions. [2021-06-10 16:16:31,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:31,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 558 transitions. [2021-06-10 16:16:31,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 34.875) internal successors, (558), 16 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 41.0) internal successors, (697), 17 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,166 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 41.0) internal successors, (697), 17 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,166 INFO L185 Difference]: Start difference. First operand has 197 places, 176 transitions, 2173 flow. Second operand 16 states and 558 transitions. [2021-06-10 16:16:31,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 182 transitions, 2468 flow [2021-06-10 16:16:31,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 182 transitions, 2324 flow, removed 8 selfloop flow, removed 16 redundant places. [2021-06-10 16:16:31,204 INFO L241 Difference]: Finished difference. Result has 193 places, 153 transitions, 1953 flow [2021-06-10 16:16:31,204 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2037, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1953, PETRI_PLACES=193, PETRI_TRANSITIONS=153} [2021-06-10 16:16:31,204 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 147 predicate places. [2021-06-10 16:16:31,205 INFO L480 AbstractCegarLoop]: Abstraction has has 193 places, 153 transitions, 1953 flow [2021-06-10 16:16:31,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,205 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:31,205 INFO L263 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] [2021-06-10 16:16:31,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-10 16:16:31,205 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:31,205 INFO L82 PathProgramCache]: Analyzing trace with hash -225918738, now seen corresponding path program 25 times [2021-06-10 16:16:31,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:31,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481775097] [2021-06-10 16:16:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:31,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:31,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:31,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:31,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:31,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 16:16:31,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:31,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481775097] [2021-06-10 16:16:31,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:31,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 16:16:31,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799815964] [2021-06-10 16:16:31,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 16:16:31,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:31,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 16:16:31,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-10 16:16:31,253 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 41 [2021-06-10 16:16:31,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 153 transitions, 1953 flow. Second operand has 7 states, 7 states have (on average 31.428571428571427) internal successors, (220), 7 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:31,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 41 [2021-06-10 16:16:31,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:31,399 INFO L129 PetriNetUnfolder]: 133/902 cut-off events. [2021-06-10 16:16:31,399 INFO L130 PetriNetUnfolder]: For 2848/3005 co-relation queries the response was YES. [2021-06-10 16:16:31,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4133 conditions, 902 events. 133/902 cut-off events. For 2848/3005 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8334 event pairs, 3 based on Foata normal form. 60/962 useless extension candidates. Maximal degree in co-relation 4085. Up to 135 conditions per place. [2021-06-10 16:16:31,407 INFO L132 encePairwiseOnDemand]: 32/41 looper letters, 7 selfloop transitions, 11 changer transitions 19/159 dead transitions. [2021-06-10 16:16:31,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 159 transitions, 2060 flow [2021-06-10 16:16:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 16:16:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 16:16:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2021-06-10 16:16:31,408 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7994579945799458 [2021-06-10 16:16:31,408 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 295 transitions. [2021-06-10 16:16:31,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 295 transitions. [2021-06-10 16:16:31,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:31,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 295 transitions. [2021-06-10 16:16:31,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.77777777777778) internal successors, (295), 9 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,409 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,409 INFO L185 Difference]: Start difference. First operand has 193 places, 153 transitions, 1953 flow. Second operand 9 states and 295 transitions. [2021-06-10 16:16:31,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 159 transitions, 2060 flow [2021-06-10 16:16:31,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 159 transitions, 1711 flow, removed 17 selfloop flow, removed 37 redundant places. [2021-06-10 16:16:31,431 INFO L241 Difference]: Finished difference. Result has 153 places, 138 transitions, 1509 flow [2021-06-10 16:16:31,432 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1509, PETRI_PLACES=153, PETRI_TRANSITIONS=138} [2021-06-10 16:16:31,432 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 107 predicate places. [2021-06-10 16:16:31,432 INFO L480 AbstractCegarLoop]: Abstraction has has 153 places, 138 transitions, 1509 flow [2021-06-10 16:16:31,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.428571428571427) internal successors, (220), 7 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,432 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:31,433 INFO L263 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] [2021-06-10 16:16:31,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-10 16:16:31,433 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:31,433 INFO L82 PathProgramCache]: Analyzing trace with hash 730107588, now seen corresponding path program 26 times [2021-06-10 16:16:31,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:31,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424287769] [2021-06-10 16:16:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:31,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:31,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:31,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:31,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424287769] [2021-06-10 16:16:31,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:31,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-10 16:16:31,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102077693] [2021-06-10 16:16:31,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 16:16:31,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:31,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 16:16:31,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-10 16:16:31,503 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 41 [2021-06-10 16:16:31,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 138 transitions, 1509 flow. Second operand has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:31,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 41 [2021-06-10 16:16:31,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:31,613 INFO L129 PetriNetUnfolder]: 44/600 cut-off events. [2021-06-10 16:16:31,613 INFO L130 PetriNetUnfolder]: For 1102/1166 co-relation queries the response was YES. [2021-06-10 16:16:31,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 600 events. 44/600 cut-off events. For 1102/1166 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5382 event pairs, 2 based on Foata normal form. 29/615 useless extension candidates. Maximal degree in co-relation 1954. Up to 89 conditions per place. [2021-06-10 16:16:31,616 INFO L132 encePairwiseOnDemand]: 32/41 looper letters, 5 selfloop transitions, 6 changer transitions 4/137 dead transitions. [2021-06-10 16:16:31,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 137 transitions, 1531 flow [2021-06-10 16:16:31,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 16:16:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 16:16:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 285 transitions. [2021-06-10 16:16:31,617 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7723577235772358 [2021-06-10 16:16:31,617 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 285 transitions. [2021-06-10 16:16:31,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 285 transitions. [2021-06-10 16:16:31,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:31,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 285 transitions. [2021-06-10 16:16:31,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.666666666666668) internal successors, (285), 9 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,619 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,619 INFO L185 Difference]: Start difference. First operand has 153 places, 138 transitions, 1509 flow. Second operand 9 states and 285 transitions. [2021-06-10 16:16:31,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 137 transitions, 1531 flow [2021-06-10 16:16:31,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 1453 flow, removed 1 selfloop flow, removed 17 redundant places. [2021-06-10 16:16:31,628 INFO L241 Difference]: Finished difference. Result has 141 places, 133 transitions, 1410 flow [2021-06-10 16:16:31,629 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1410, PETRI_PLACES=141, PETRI_TRANSITIONS=133} [2021-06-10 16:16:31,629 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 95 predicate places. [2021-06-10 16:16:31,629 INFO L480 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions, 1410 flow [2021-06-10 16:16:31,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,629 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:31,629 INFO L263 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] [2021-06-10 16:16:31,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-10 16:16:31,629 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:31,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:31,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1474026858, now seen corresponding path program 27 times [2021-06-10 16:16:31,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:31,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912872613] [2021-06-10 16:16:31,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:31,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:31,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:31,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,680 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-06-10 16:16:31,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 16:16:31,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:31,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912872613] [2021-06-10 16:16:31,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:31,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-10 16:16:31,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549105413] [2021-06-10 16:16:31,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 16:16:31,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:31,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 16:16:31,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-10 16:16:31,692 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 41 [2021-06-10 16:16:31,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions, 1410 flow. Second operand has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:31,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 41 [2021-06-10 16:16:31,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:31,807 INFO L129 PetriNetUnfolder]: 43/569 cut-off events. [2021-06-10 16:16:31,807 INFO L130 PetriNetUnfolder]: For 967/1027 co-relation queries the response was YES. [2021-06-10 16:16:31,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 569 events. 43/569 cut-off events. For 967/1027 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5097 event pairs, 1 based on Foata normal form. 30/599 useless extension candidates. Maximal degree in co-relation 1785. Up to 88 conditions per place. [2021-06-10 16:16:31,810 INFO L132 encePairwiseOnDemand]: 31/41 looper letters, 2 selfloop transitions, 10 changer transitions 0/134 dead transitions. [2021-06-10 16:16:31,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 134 transitions, 1443 flow [2021-06-10 16:16:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 16:16:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 16:16:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 283 transitions. [2021-06-10 16:16:31,811 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7669376693766937 [2021-06-10 16:16:31,811 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 283 transitions. [2021-06-10 16:16:31,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 283 transitions. [2021-06-10 16:16:31,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:31,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 283 transitions. [2021-06-10 16:16:31,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.444444444444443) internal successors, (283), 9 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,812 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,812 INFO L185 Difference]: Start difference. First operand has 141 places, 133 transitions, 1410 flow. Second operand 9 states and 283 transitions. [2021-06-10 16:16:31,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 134 transitions, 1443 flow [2021-06-10 16:16:31,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 134 transitions, 1414 flow, removed 3 selfloop flow, removed 12 redundant places. [2021-06-10 16:16:31,821 INFO L241 Difference]: Finished difference. Result has 133 places, 134 transitions, 1417 flow [2021-06-10 16:16:31,821 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1417, PETRI_PLACES=133, PETRI_TRANSITIONS=134} [2021-06-10 16:16:31,821 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 87 predicate places. [2021-06-10 16:16:31,822 INFO L480 AbstractCegarLoop]: Abstraction has has 133 places, 134 transitions, 1417 flow [2021-06-10 16:16:31,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,822 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 16:16:31,822 INFO L263 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] [2021-06-10 16:16:31,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-10 16:16:31,822 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 16:16:31,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 16:16:31,822 INFO L82 PathProgramCache]: Analyzing trace with hash -514566828, now seen corresponding path program 28 times [2021-06-10 16:16:31,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 16:16:31,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322917803] [2021-06-10 16:16:31,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 16:16:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 16:16:31,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:31,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 16:16:31,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 16:16:31,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 16:16:31,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 16:16:31,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 16:16:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 16:16:31,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322917803] [2021-06-10 16:16:31,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 16:16:31,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-10 16:16:31,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345933558] [2021-06-10 16:16:31,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 16:16:31,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 16:16:31,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 16:16:31,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-10 16:16:31,885 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 41 [2021-06-10 16:16:31,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 134 transitions, 1417 flow. Second operand has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 16:16:31,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 41 [2021-06-10 16:16:31,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 16:16:31,963 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2021-06-10 16:16:31,963 INFO L130 PetriNetUnfolder]: For 120/122 co-relation queries the response was YES. [2021-06-10 16:16:31,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 45 events. 0/45 cut-off events. For 120/122 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 107 event pairs, 0 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-06-10 16:16:31,963 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2021-06-10 16:16:31,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 41 transitions, 383 flow [2021-06-10 16:16:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 16:16:31,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 16:16:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 279 transitions. [2021-06-10 16:16:31,964 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7560975609756098 [2021-06-10 16:16:31,964 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 279 transitions. [2021-06-10 16:16:31,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 279 transitions. [2021-06-10 16:16:31,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 16:16:31,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 279 transitions. [2021-06-10 16:16:31,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,965 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,965 INFO L185 Difference]: Start difference. First operand has 133 places, 134 transitions, 1417 flow. Second operand 9 states and 279 transitions. [2021-06-10 16:16:31,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 41 transitions, 383 flow [2021-06-10 16:16:31,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 41 transitions, 193 flow, removed 3 selfloop flow, removed 40 redundant places. [2021-06-10 16:16:31,966 INFO L241 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2021-06-10 16:16:31,966 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2021-06-10 16:16:31,966 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2021-06-10 16:16:31,966 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2021-06-10 16:16:31,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 16:16:31,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-10 16:16:31,970 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 04:16:31 BasicIcfg [2021-06-10 16:16:31,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 16:16:31,971 INFO L168 Benchmark]: Toolchain (without parser) took 12886.40 ms. Allocated memory was 373.3 MB in the beginning and 620.8 MB in the end (delta: 247.5 MB). Free memory was 352.4 MB in the beginning and 301.0 MB in the end (delta: 51.4 MB). Peak memory consumption was 300.4 MB. Max. memory is 16.0 GB. [2021-06-10 16:16:31,971 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 373.3 MB. Free memory is still 353.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 16:16:31,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.70 ms. Allocated memory is still 373.3 MB. Free memory was 352.4 MB in the beginning and 350.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 16:16:31,971 INFO L168 Benchmark]: Boogie Preprocessor took 13.56 ms. Allocated memory is still 373.3 MB. Free memory was 350.9 MB in the beginning and 350.0 MB in the end (delta: 869.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 16:16:31,971 INFO L168 Benchmark]: RCFGBuilder took 303.53 ms. Allocated memory is still 373.3 MB. Free memory was 349.9 MB in the beginning and 338.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-10 16:16:31,971 INFO L168 Benchmark]: TraceAbstraction took 12534.58 ms. Allocated memory was 373.3 MB in the beginning and 620.8 MB in the end (delta: 247.5 MB). Free memory was 337.5 MB in the beginning and 301.0 MB in the end (delta: 36.5 MB). Peak memory consumption was 285.8 MB. Max. memory is 16.0 GB. [2021-06-10 16:16:31,972 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 373.3 MB. Free memory is still 353.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.70 ms. Allocated memory is still 373.3 MB. Free memory was 352.4 MB in the beginning and 350.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.56 ms. Allocated memory is still 373.3 MB. Free memory was 350.9 MB in the beginning and 350.0 MB in the end (delta: 869.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 303.53 ms. Allocated memory is still 373.3 MB. Free memory was 349.9 MB in the beginning and 338.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 12534.58 ms. Allocated memory was 373.3 MB in the beginning and 620.8 MB in the end (delta: 247.5 MB). Free memory was 337.5 MB in the beginning and 301.0 MB in the end (delta: 36.5 MB). Peak memory consumption was 285.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 71]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 18.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 12370.0ms, OverallIterations: 28, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 10397.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 60.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 177 SDtfs, 515 SDslu, 149 SDs, 0 SdLazy, 3039 SolverSat, 331 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1385.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 2243.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2771occurred in iteration=19, InterpolantAutomatonStates: 324, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 40.6ms SsaConstructionTime, 134.2ms SatisfiabilityAnalysisTime, 1497.2ms InterpolantComputationTime, 1008 NumberOfCodeBlocks, 1008 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 980 ConstructedInterpolants, 0 QuantifiedInterpolants, 3488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...