/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 02:40:54,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 02:40:54,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 02:40:54,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-12 02:40:54,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-12 02:40:54,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-12 02:40:54,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-12 02:40:54,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-12 02:40:54,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-12 02:40:54,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-12 02:40:54,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-12 02:40:54,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-12 02:40:54,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-12 02:40:54,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-12 02:40:54,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-12 02:40:54,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-12 02:40:54,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-12 02:40:54,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-12 02:40:54,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-12 02:40:54,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-12 02:40:54,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-12 02:40:54,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-12 02:40:54,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-12 02:40:54,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-12 02:40:54,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-12 02:40:54,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-12 02:40:54,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-12 02:40:54,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-12 02:40:54,757 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-SemanticLbe.epf [2021-03-12 02:40:54,769 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 02:40:54,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 02:40:54,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 02:40:54,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 02:40:54,770 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 02:40:54,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 02:40:54,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 02:40:54,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 02:40:54,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 02:40:54,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 02:40:54,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 02:40:54,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 02:40:54,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 02:40:54,771 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 02:40:54,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 02:40:54,771 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 02:40:54,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 02:40:54,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 02:40:54,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 02:40:54,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 02:40:54,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 02:40:54,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 02:40:54,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 02:40:54,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 02:40:54,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 02:40:54,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 02:40:54,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 02:40:54,773 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-12 02:40:54,773 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 02:40:54,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 02:40:54,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 02:40:54,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 02:40:54,966 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 02:40:54,968 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 02:40:54,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-03-12 02:40:54,969 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-03-12 02:40:55,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 02:40:55,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 02:40:55,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 02:40:55,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 02:40:55,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 02:40:55,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:40:55" (1/1) ... [2021-03-12 02:40:55,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:40:55" (1/1) ... [2021-03-12 02:40:55,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 02:40:55,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 02:40:55,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 02:40:55,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 02:40:55,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:40:55" (1/1) ... [2021-03-12 02:40:55,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:40:55" (1/1) ... [2021-03-12 02:40:55,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:40:55" (1/1) ... [2021-03-12 02:40:55,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:40:55" (1/1) ... [2021-03-12 02:40:55,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:40:55" (1/1) ... [2021-03-12 02:40:55,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:40:55" (1/1) ... [2021-03-12 02:40:55,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:40:55" (1/1) ... [2021-03-12 02:40:55,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 02:40:55,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 02:40:55,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 02:40:55,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 02:40:55,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:40:55" (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 [2021-03-12 02:40:55,123 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 02:40:55,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 02:40:55,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 02:40:55,124 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 02:40:55,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 02:40:55,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 02:40:55,125 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 02:40:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 02:40:55,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 02:40:55,125 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-12 02:40:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-12 02:40:55,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-12 02:40:55,126 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-12 02:40:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-12 02:40:55,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-12 02:40:55,126 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 02:40:55,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 02:40:55,281 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 02:40:55,282 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 02:40:55 BoogieIcfgContainer [2021-03-12 02:40:55,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 02:40:55,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 02:40:55,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 02:40:55,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 02:40:55,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:40:55" (1/2) ... [2021-03-12 02:40:55,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656a146f and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 02:40:55, skipping insertion in model container [2021-03-12 02:40:55,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 02:40:55" (2/2) ... [2021-03-12 02:40:55,286 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-03-12 02:40:55,290 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 02:40:55,292 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 02:40:55,292 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 02:40:55,332 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-12 02:40:55,349 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-12 02:40:55,361 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 02:40:55,361 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-12 02:40:55,361 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 02:40:55,361 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 02:40:55,361 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 02:40:55,362 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 02:40:55,362 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 02:40:55,362 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 02:40:55,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 45 transitions, 122 flow [2021-03-12 02:40:55,389 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-03-12 02:40:55,390 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-12 02:40:55,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 41 events. 0/41 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-12 02:40:55,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 45 transitions, 122 flow [2021-03-12 02:40:55,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 102 flow [2021-03-12 02:40:55,396 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-12 02:40:55,402 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 39 transitions, 102 flow [2021-03-12 02:40:55,404 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 39 transitions, 102 flow [2021-03-12 02:40:55,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 39 transitions, 102 flow [2021-03-12 02:40:55,418 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-03-12 02:40:55,418 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-12 02:40:55,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 39 events. 0/39 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-12 02:40:55,421 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-03-12 02:40:55,687 INFO L131 LiptonReduction]: Checked pairs total: 1092 [2021-03-12 02:40:55,687 INFO L133 LiptonReduction]: Total number of compositions: 13 [2021-03-12 02:40:55,688 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 294 [2021-03-12 02:40:55,698 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-03-12 02:40:55,698 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-12 02:40:55,698 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:40:55,699 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:40:55,699 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:40:55,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:40:55,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1121673289, now seen corresponding path program 1 times [2021-03-12 02:40:55,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:40:55,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380547565] [2021-03-12 02:40:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:40:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:40:55,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:55,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 02:40:55,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:55,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:40:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:40:55,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380547565] [2021-03-12 02:40:55,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:40:55,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-12 02:40:55,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171255202] [2021-03-12 02:40:55,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 02:40:55,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:40:55,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 02:40:55,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 02:40:55,801 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 58 [2021-03-12 02:40:55,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:55,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:40:55,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 58 [2021-03-12 02:40:55,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:40:55,817 INFO L129 PetriNetUnfolder]: 1/30 cut-off events. [2021-03-12 02:40:55,817 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-12 02:40:55,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 30 events. 1/30 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 1 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 33. Up to 6 conditions per place. [2021-03-12 02:40:55,819 INFO L132 encePairwiseOnDemand]: 55/58 looper letters, 2 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2021-03-12 02:40:55,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 26 transitions, 84 flow [2021-03-12 02:40:55,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 02:40:55,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 02:40:55,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2021-03-12 02:40:55,827 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8908045977011494 [2021-03-12 02:40:55,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2021-03-12 02:40:55,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2021-03-12 02:40:55,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:40:55,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2021-03-12 02:40:55,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:55,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 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) [2021-03-12 02:40:55,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 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) [2021-03-12 02:40:55,835 INFO L185 Difference]: Start difference. First operand has 39 places, 26 transitions, 76 flow. Second operand 3 states and 155 transitions. [2021-03-12 02:40:55,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 26 transitions, 84 flow [2021-03-12 02:40:55,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 68 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-12 02:40:55,838 INFO L241 Difference]: Finished difference. Result has 34 places, 26 transitions, 68 flow [2021-03-12 02:40:55,839 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2021-03-12 02:40:55,840 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2021-03-12 02:40:55,840 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 68 flow [2021-03-12 02:40:55,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:55,840 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:40:55,840 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:40:55,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 02:40:55,840 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:40:55,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:40:55,841 INFO L82 PathProgramCache]: Analyzing trace with hash -206377187, now seen corresponding path program 2 times [2021-03-12 02:40:55,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:40:55,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962601584] [2021-03-12 02:40:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:40:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:40:55,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:55,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 02:40:55,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:55,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:40:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:40:55,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962601584] [2021-03-12 02:40:55,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:40:55,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-12 02:40:55,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096184652] [2021-03-12 02:40:55,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 02:40:55,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:40:55,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 02:40:55,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 02:40:55,860 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 58 [2021-03-12 02:40:55,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:55,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:40:55,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 58 [2021-03-12 02:40:55,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:40:55,869 INFO L129 PetriNetUnfolder]: 1/30 cut-off events. [2021-03-12 02:40:55,869 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-12 02:40:55,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 1 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 31. Up to 6 conditions per place. [2021-03-12 02:40:55,870 INFO L132 encePairwiseOnDemand]: 55/58 looper letters, 2 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2021-03-12 02:40:55,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 76 flow [2021-03-12 02:40:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 02:40:55,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 02:40:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2021-03-12 02:40:55,871 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8908045977011494 [2021-03-12 02:40:55,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2021-03-12 02:40:55,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2021-03-12 02:40:55,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:40:55,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2021-03-12 02:40:55,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:55,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 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) [2021-03-12 02:40:55,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 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) [2021-03-12 02:40:55,874 INFO L185 Difference]: Start difference. First operand has 34 places, 26 transitions, 68 flow. Second operand 3 states and 155 transitions. [2021-03-12 02:40:55,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 76 flow [2021-03-12 02:40:55,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 02:40:55,875 INFO L241 Difference]: Finished difference. Result has 35 places, 26 transitions, 72 flow [2021-03-12 02:40:55,875 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-03-12 02:40:55,875 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2021-03-12 02:40:55,875 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 72 flow [2021-03-12 02:40:55,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:55,876 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:40:55,876 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:40:55,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-12 02:40:55,876 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:40:55,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:40:55,876 INFO L82 PathProgramCache]: Analyzing trace with hash 248521225, now seen corresponding path program 3 times [2021-03-12 02:40:55,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:40:55,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491327434] [2021-03-12 02:40:55,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:40:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:40:55,942 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:40:55,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:40:55,947 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:40:55,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:40:55,954 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:40:55,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:40:55,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:55,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:55,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:55,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:55,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:55,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:56,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:56,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:56,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:56,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:56,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:56,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:56,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:56,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:56,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:56,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:56,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:56,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:56,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:56,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:56,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:56,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:56,128 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-12 02:40:56,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 02:40:56,154 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-12 02:40:56,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:40:56,183 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:40:56,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:40:56,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491327434] [2021-03-12 02:40:56,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:40:56,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-12 02:40:56,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716536374] [2021-03-12 02:40:56,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-12 02:40:56,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:40:56,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-12 02:40:56,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-12 02:40:56,192 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:40:56,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 72 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:56,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:40:56,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:40:56,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:40:57,253 INFO L129 PetriNetUnfolder]: 1079/1646 cut-off events. [2021-03-12 02:40:57,253 INFO L130 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2021-03-12 02:40:57,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3685 conditions, 1646 events. 1079/1646 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7234 event pairs, 579 based on Foata normal form. 1/1643 useless extension candidates. Maximal degree in co-relation 3639. Up to 1373 conditions per place. [2021-03-12 02:40:57,261 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 49 selfloop transitions, 75 changer transitions 3/135 dead transitions. [2021-03-12 02:40:57,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 135 transitions, 604 flow [2021-03-12 02:40:57,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 02:40:57,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-03-12 02:40:57,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 830 transitions. [2021-03-12 02:40:57,272 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5300127713920817 [2021-03-12 02:40:57,272 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 830 transitions. [2021-03-12 02:40:57,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 830 transitions. [2021-03-12 02:40:57,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:40:57,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 830 transitions. [2021-03-12 02:40:57,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 30.74074074074074) internal successors, (830), 27 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:57,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 58.0) internal successors, (1624), 28 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:57,281 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 58.0) internal successors, (1624), 28 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:57,281 INFO L185 Difference]: Start difference. First operand has 35 places, 26 transitions, 72 flow. Second operand 27 states and 830 transitions. [2021-03-12 02:40:57,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 135 transitions, 604 flow [2021-03-12 02:40:57,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 135 transitions, 566 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 02:40:57,288 INFO L241 Difference]: Finished difference. Result has 73 places, 100 transitions, 502 flow [2021-03-12 02:40:57,288 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=502, PETRI_PLACES=73, PETRI_TRANSITIONS=100} [2021-03-12 02:40:57,288 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2021-03-12 02:40:57,288 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 100 transitions, 502 flow [2021-03-12 02:40:57,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:57,288 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:40:57,289 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:40:57,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-12 02:40:57,289 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:40:57,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:40:57,290 INFO L82 PathProgramCache]: Analyzing trace with hash 551834127, now seen corresponding path program 4 times [2021-03-12 02:40:57,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:40:57,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272164596] [2021-03-12 02:40:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:40:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:40:57,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 02:40:57,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:40:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:40:57,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272164596] [2021-03-12 02:40:57,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:40:57,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-12 02:40:57,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553175769] [2021-03-12 02:40:57,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 02:40:57,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:40:57,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 02:40:57,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 02:40:57,322 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 58 [2021-03-12 02:40:57,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 100 transitions, 502 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:57,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:40:57,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 58 [2021-03-12 02:40:57,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:40:57,358 INFO L129 PetriNetUnfolder]: 280/563 cut-off events. [2021-03-12 02:40:57,359 INFO L130 PetriNetUnfolder]: For 320/320 co-relation queries the response was YES. [2021-03-12 02:40:57,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 563 events. 280/563 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3026 event pairs, 105 based on Foata normal form. 17/544 useless extension candidates. Maximal degree in co-relation 1529. Up to 399 conditions per place. [2021-03-12 02:40:57,363 INFO L132 encePairwiseOnDemand]: 55/58 looper letters, 6 selfloop transitions, 18 changer transitions 0/98 dead transitions. [2021-03-12 02:40:57,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 98 transitions, 542 flow [2021-03-12 02:40:57,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 02:40:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 02:40:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2021-03-12 02:40:57,366 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8908045977011494 [2021-03-12 02:40:57,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2021-03-12 02:40:57,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2021-03-12 02:40:57,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:40:57,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2021-03-12 02:40:57,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:57,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 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) [2021-03-12 02:40:57,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 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) [2021-03-12 02:40:57,371 INFO L185 Difference]: Start difference. First operand has 73 places, 100 transitions, 502 flow. Second operand 3 states and 155 transitions. [2021-03-12 02:40:57,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 98 transitions, 542 flow [2021-03-12 02:40:57,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 98 transitions, 532 flow, removed 5 selfloop flow, removed 1 redundant places. [2021-03-12 02:40:57,379 INFO L241 Difference]: Finished difference. Result has 72 places, 98 transitions, 542 flow [2021-03-12 02:40:57,379 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=542, PETRI_PLACES=72, PETRI_TRANSITIONS=98} [2021-03-12 02:40:57,379 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 33 predicate places. [2021-03-12 02:40:57,379 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 98 transitions, 542 flow [2021-03-12 02:40:57,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:57,379 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:40:57,379 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:40:57,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-12 02:40:57,379 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:40:57,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:40:57,380 INFO L82 PathProgramCache]: Analyzing trace with hash 956248671, now seen corresponding path program 5 times [2021-03-12 02:40:57,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:40:57,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004507022] [2021-03-12 02:40:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:40:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:40:57,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 02:40:57,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:40:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:40:57,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004507022] [2021-03-12 02:40:57,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:40:57,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-12 02:40:57,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311531973] [2021-03-12 02:40:57,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 02:40:57,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:40:57,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 02:40:57,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 02:40:57,407 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 58 [2021-03-12 02:40:57,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 98 transitions, 542 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:57,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:40:57,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 58 [2021-03-12 02:40:57,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:40:57,431 INFO L129 PetriNetUnfolder]: 196/435 cut-off events. [2021-03-12 02:40:57,432 INFO L130 PetriNetUnfolder]: For 553/553 co-relation queries the response was YES. [2021-03-12 02:40:57,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 435 events. 196/435 cut-off events. For 553/553 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2335 event pairs, 91 based on Foata normal form. 7/418 useless extension candidates. Maximal degree in co-relation 1284. Up to 286 conditions per place. [2021-03-12 02:40:57,434 INFO L132 encePairwiseOnDemand]: 55/58 looper letters, 6 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2021-03-12 02:40:57,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 502 flow [2021-03-12 02:40:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 02:40:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 02:40:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2021-03-12 02:40:57,435 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8908045977011494 [2021-03-12 02:40:57,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2021-03-12 02:40:57,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2021-03-12 02:40:57,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:40:57,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2021-03-12 02:40:57,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:57,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 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) [2021-03-12 02:40:57,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 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) [2021-03-12 02:40:57,436 INFO L185 Difference]: Start difference. First operand has 72 places, 98 transitions, 542 flow. Second operand 3 states and 155 transitions. [2021-03-12 02:40:57,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 502 flow [2021-03-12 02:40:57,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 468 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-12 02:40:57,441 INFO L241 Difference]: Finished difference. Result has 70 places, 86 transitions, 464 flow [2021-03-12 02:40:57,441 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=70, PETRI_TRANSITIONS=86} [2021-03-12 02:40:57,442 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 31 predicate places. [2021-03-12 02:40:57,442 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 86 transitions, 464 flow [2021-03-12 02:40:57,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:57,442 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:40:57,443 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:40:57,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-12 02:40:57,443 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:40:57,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:40:57,443 INFO L82 PathProgramCache]: Analyzing trace with hash -36853445, now seen corresponding path program 6 times [2021-03-12 02:40:57,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:40:57,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262457105] [2021-03-12 02:40:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:40:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:40:57,497 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:40:57,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:40:57,501 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:40:57,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:40:57,507 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:40:57,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:40:57,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:57,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:57,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:57,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:57,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:57,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:57,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:57,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:57,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:57,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:57,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:57,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:40:57,661 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:40:57,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:40:57,690 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:40:57,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:40:57,713 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:40:57,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:40:57,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262457105] [2021-03-12 02:40:57,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:40:57,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:40:57,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663859305] [2021-03-12 02:40:57,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:40:57,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:40:57,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:40:57,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:40:57,719 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:40:57,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 86 transitions, 464 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:57,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:40:57,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:40:57,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:40:59,662 INFO L129 PetriNetUnfolder]: 915/1505 cut-off events. [2021-03-12 02:40:59,662 INFO L130 PetriNetUnfolder]: For 2675/2675 co-relation queries the response was YES. [2021-03-12 02:40:59,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5899 conditions, 1505 events. 915/1505 cut-off events. For 2675/2675 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6942 event pairs, 292 based on Foata normal form. 2/1503 useless extension candidates. Maximal degree in co-relation 5795. Up to 1088 conditions per place. [2021-03-12 02:40:59,671 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 134 selfloop transitions, 163 changer transitions 10/315 dead transitions. [2021-03-12 02:40:59,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 315 transitions, 2347 flow [2021-03-12 02:40:59,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-12 02:40:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-03-12 02:40:59,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1751 transitions. [2021-03-12 02:40:59,676 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5205112960760999 [2021-03-12 02:40:59,676 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1751 transitions. [2021-03-12 02:40:59,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1751 transitions. [2021-03-12 02:40:59,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:40:59,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1751 transitions. [2021-03-12 02:40:59,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 30.189655172413794) internal successors, (1751), 58 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:59,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 58.0) internal successors, (3422), 59 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:59,684 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 58.0) internal successors, (3422), 59 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:59,684 INFO L185 Difference]: Start difference. First operand has 70 places, 86 transitions, 464 flow. Second operand 58 states and 1751 transitions. [2021-03-12 02:40:59,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 315 transitions, 2347 flow [2021-03-12 02:40:59,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 315 transitions, 2255 flow, removed 16 selfloop flow, removed 3 redundant places. [2021-03-12 02:40:59,693 INFO L241 Difference]: Finished difference. Result has 152 places, 249 transitions, 1898 flow [2021-03-12 02:40:59,693 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1898, PETRI_PLACES=152, PETRI_TRANSITIONS=249} [2021-03-12 02:40:59,694 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 113 predicate places. [2021-03-12 02:40:59,694 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 249 transitions, 1898 flow [2021-03-12 02:40:59,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:59,694 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:40:59,694 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:40:59,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-12 02:40:59,694 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:40:59,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:40:59,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1932201351, now seen corresponding path program 7 times [2021-03-12 02:40:59,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:40:59,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098735852] [2021-03-12 02:40:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:40:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:40:59,717 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:40:59,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:40:59,724 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:40:59,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:40:59,730 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:40:59,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:40:59,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:59,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:59,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:59,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:59,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:59,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:59,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:59,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:40:59,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:59,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:40:59,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:59,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:59,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:59,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:59,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:59,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:59,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:59,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:59,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:59,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:40:59,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:59,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:59,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:40:59,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:40:59,929 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-12 02:40:59,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:40:59,956 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:40:59,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:40:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:40:59,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098735852] [2021-03-12 02:40:59,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:40:59,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:40:59,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051118457] [2021-03-12 02:40:59,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:40:59,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:40:59,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:40:59,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:40:59,959 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:40:59,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 249 transitions, 1898 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:40:59,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:40:59,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:40:59,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:41:03,110 INFO L129 PetriNetUnfolder]: 1407/2311 cut-off events. [2021-03-12 02:41:03,110 INFO L130 PetriNetUnfolder]: For 21886/21904 co-relation queries the response was YES. [2021-03-12 02:41:03,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13601 conditions, 2311 events. 1407/2311 cut-off events. For 21886/21904 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11551 event pairs, 300 based on Foata normal form. 4/2312 useless extension candidates. Maximal degree in co-relation 13526. Up to 1621 conditions per place. [2021-03-12 02:41:03,135 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 280 selfloop transitions, 377 changer transitions 8/673 dead transitions. [2021-03-12 02:41:03,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 673 transitions, 7697 flow [2021-03-12 02:41:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-03-12 02:41:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-03-12 02:41:03,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 2975 transitions. [2021-03-12 02:41:03,142 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5181121560431905 [2021-03-12 02:41:03,142 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 2975 transitions. [2021-03-12 02:41:03,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 2975 transitions. [2021-03-12 02:41:03,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:41:03,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 2975 transitions. [2021-03-12 02:41:03,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 30.050505050505052) internal successors, (2975), 99 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:03,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 58.0) internal successors, (5800), 100 states have internal predecessors, (5800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:03,154 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 58.0) internal successors, (5800), 100 states have internal predecessors, (5800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:03,154 INFO L185 Difference]: Start difference. First operand has 152 places, 249 transitions, 1898 flow. Second operand 99 states and 2975 transitions. [2021-03-12 02:41:03,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 673 transitions, 7697 flow [2021-03-12 02:41:03,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 673 transitions, 7244 flow, removed 207 selfloop flow, removed 3 redundant places. [2021-03-12 02:41:03,204 INFO L241 Difference]: Finished difference. Result has 270 places, 614 transitions, 6683 flow [2021-03-12 02:41:03,205 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=6683, PETRI_PLACES=270, PETRI_TRANSITIONS=614} [2021-03-12 02:41:03,205 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 231 predicate places. [2021-03-12 02:41:03,205 INFO L480 AbstractCegarLoop]: Abstraction has has 270 places, 614 transitions, 6683 flow [2021-03-12 02:41:03,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:03,205 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:41:03,205 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:41:03,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-12 02:41:03,206 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:41:03,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:41:03,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1920496571, now seen corresponding path program 8 times [2021-03-12 02:41:03,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:41:03,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614156261] [2021-03-12 02:41:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:41:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:41:03,260 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:41:03,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:41:03,265 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:41:03,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:41:03,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:03,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:03,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:03,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:03,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:03,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:03,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:03,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:03,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:03,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:03,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:03,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:03,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:03,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:03,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:03,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:03,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:03,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:03,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:03,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:03,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:03,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:03,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:03,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:03,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:03,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:03,463 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:41:03,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:41:03,483 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:41:03,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:03,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:41:03,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614156261] [2021-03-12 02:41:03,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:41:03,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 02:41:03,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270315321] [2021-03-12 02:41:03,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 02:41:03,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:41:03,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 02:41:03,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-12 02:41:03,486 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:41:03,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 614 transitions, 6683 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:03,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:41:03,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:41:03,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:41:06,616 INFO L129 PetriNetUnfolder]: 1936/3159 cut-off events. [2021-03-12 02:41:06,616 INFO L130 PetriNetUnfolder]: For 59497/59517 co-relation queries the response was YES. [2021-03-12 02:41:06,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23646 conditions, 3159 events. 1936/3159 cut-off events. For 59497/59517 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16720 event pairs, 329 based on Foata normal form. 4/3159 useless extension candidates. Maximal degree in co-relation 23531. Up to 2386 conditions per place. [2021-03-12 02:41:06,648 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 602 selfloop transitions, 451 changer transitions 3/1064 dead transitions. [2021-03-12 02:41:06,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1064 transitions, 14882 flow [2021-03-12 02:41:06,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-03-12 02:41:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-03-12 02:41:06,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 2584 transitions. [2021-03-12 02:41:06,652 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5303776683087028 [2021-03-12 02:41:06,652 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 2584 transitions. [2021-03-12 02:41:06,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 2584 transitions. [2021-03-12 02:41:06,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:41:06,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 2584 transitions. [2021-03-12 02:41:06,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 30.761904761904763) internal successors, (2584), 84 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:06,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 58.0) internal successors, (4930), 85 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:06,660 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 58.0) internal successors, (4930), 85 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:06,660 INFO L185 Difference]: Start difference. First operand has 270 places, 614 transitions, 6683 flow. Second operand 84 states and 2584 transitions. [2021-03-12 02:41:06,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1064 transitions, 14882 flow [2021-03-12 02:41:06,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 1064 transitions, 12142 flow, removed 1345 selfloop flow, removed 3 redundant places. [2021-03-12 02:41:06,925 INFO L241 Difference]: Finished difference. Result has 374 places, 1017 transitions, 11074 flow [2021-03-12 02:41:06,926 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=3984, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=11074, PETRI_PLACES=374, PETRI_TRANSITIONS=1017} [2021-03-12 02:41:06,926 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 335 predicate places. [2021-03-12 02:41:06,926 INFO L480 AbstractCegarLoop]: Abstraction has has 374 places, 1017 transitions, 11074 flow [2021-03-12 02:41:06,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:06,926 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:41:06,926 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:41:06,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-12 02:41:06,927 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:41:06,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:41:06,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1055726613, now seen corresponding path program 9 times [2021-03-12 02:41:06,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:41:06,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699985018] [2021-03-12 02:41:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:41:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:41:06,942 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:41:06,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:41:06,946 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:41:06,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:41:06,952 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:41:06,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:41:06,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:06,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:06,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:06,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:06,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:06,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:06,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:06,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:06,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:06,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:07,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:07,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:07,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:07,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:07,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:07,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:07,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:07,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:07,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:07,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:07,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:07,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:07,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:07,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:07,095 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-12 02:41:07,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:41:07,122 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:41:07,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:41:07,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699985018] [2021-03-12 02:41:07,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:41:07,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-12 02:41:07,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673336596] [2021-03-12 02:41:07,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-12 02:41:07,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:41:07,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-12 02:41:07,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-12 02:41:07,125 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:41:07,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 1017 transitions, 11074 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:07,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:41:07,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:41:07,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:41:10,263 INFO L129 PetriNetUnfolder]: 2383/3886 cut-off events. [2021-03-12 02:41:10,263 INFO L130 PetriNetUnfolder]: For 92234/92256 co-relation queries the response was YES. [2021-03-12 02:41:10,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32446 conditions, 3886 events. 2383/3886 cut-off events. For 92234/92256 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21317 event pairs, 309 based on Foata normal form. 3/3888 useless extension candidates. Maximal degree in co-relation 32303. Up to 3091 conditions per place. [2021-03-12 02:41:10,305 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 972 selfloop transitions, 447 changer transitions 9/1436 dead transitions. [2021-03-12 02:41:10,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 1436 transitions, 21073 flow [2021-03-12 02:41:10,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-03-12 02:41:10,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-03-12 02:41:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 2184 transitions. [2021-03-12 02:41:10,309 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5303545410393394 [2021-03-12 02:41:10,309 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 2184 transitions. [2021-03-12 02:41:10,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 2184 transitions. [2021-03-12 02:41:10,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:41:10,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 2184 transitions. [2021-03-12 02:41:10,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 30.760563380281692) internal successors, (2184), 71 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:10,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 58.0) internal successors, (4176), 72 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:10,316 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 58.0) internal successors, (4176), 72 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:10,316 INFO L185 Difference]: Start difference. First operand has 374 places, 1017 transitions, 11074 flow. Second operand 71 states and 2184 transitions. [2021-03-12 02:41:10,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 1436 transitions, 21073 flow [2021-03-12 02:41:10,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 1436 transitions, 17409 flow, removed 1832 selfloop flow, removed 1 redundant places. [2021-03-12 02:41:10,953 INFO L241 Difference]: Finished difference. Result has 468 places, 1365 transitions, 14721 flow [2021-03-12 02:41:10,954 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=7548, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1017, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=828, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=14721, PETRI_PLACES=468, PETRI_TRANSITIONS=1365} [2021-03-12 02:41:10,954 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 429 predicate places. [2021-03-12 02:41:10,954 INFO L480 AbstractCegarLoop]: Abstraction has has 468 places, 1365 transitions, 14721 flow [2021-03-12 02:41:10,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:10,954 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:41:10,954 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:41:10,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-12 02:41:10,954 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:41:10,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:41:10,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1973683947, now seen corresponding path program 10 times [2021-03-12 02:41:10,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:41:10,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032866216] [2021-03-12 02:41:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:41:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:41:10,974 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:41:10,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:41:10,978 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:41:10,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:41:10,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:10,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:10,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:10,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:11,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:11,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:11,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:11,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:11,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:11,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:11,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:11,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:11,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:11,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:11,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:11,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:11,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:11,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:11,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:11,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:11,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:11,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:11,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:11,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:11,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:11,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:11,138 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:41:11,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:41:11,163 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:41:11,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:41:11,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032866216] [2021-03-12 02:41:11,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:41:11,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 02:41:11,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959789934] [2021-03-12 02:41:11,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 02:41:11,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:41:11,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 02:41:11,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-12 02:41:11,171 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:41:11,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1365 transitions, 14721 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:11,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:41:11,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:41:11,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:41:14,307 INFO L129 PetriNetUnfolder]: 2809/4588 cut-off events. [2021-03-12 02:41:14,307 INFO L130 PetriNetUnfolder]: For 139080/139101 co-relation queries the response was YES. [2021-03-12 02:41:14,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40954 conditions, 4588 events. 2809/4588 cut-off events. For 139080/139101 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 25991 event pairs, 372 based on Foata normal form. 4/4592 useless extension candidates. Maximal degree in co-relation 40763. Up to 3778 conditions per place. [2021-03-12 02:41:14,364 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 1251 selfloop transitions, 486 changer transitions 6/1751 dead transitions. [2021-03-12 02:41:14,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 1751 transitions, 26220 flow [2021-03-12 02:41:14,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-03-12 02:41:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-03-12 02:41:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 2057 transitions. [2021-03-12 02:41:14,366 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.529336078229542 [2021-03-12 02:41:14,366 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 2057 transitions. [2021-03-12 02:41:14,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 2057 transitions. [2021-03-12 02:41:14,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:41:14,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 2057 transitions. [2021-03-12 02:41:14,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 30.70149253731343) internal successors, (2057), 67 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:14,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 58.0) internal successors, (3944), 68 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:14,374 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 58.0) internal successors, (3944), 68 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:14,374 INFO L185 Difference]: Start difference. First operand has 468 places, 1365 transitions, 14721 flow. Second operand 67 states and 2057 transitions. [2021-03-12 02:41:14,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 1751 transitions, 26220 flow [2021-03-12 02:41:15,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1751 transitions, 22063 flow, removed 2065 selfloop flow, removed 3 redundant places. [2021-03-12 02:41:15,482 INFO L241 Difference]: Finished difference. Result has 554 places, 1686 transitions, 19278 flow [2021-03-12 02:41:15,482 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=11286, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=19278, PETRI_PLACES=554, PETRI_TRANSITIONS=1686} [2021-03-12 02:41:15,483 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 515 predicate places. [2021-03-12 02:41:15,483 INFO L480 AbstractCegarLoop]: Abstraction has has 554 places, 1686 transitions, 19278 flow [2021-03-12 02:41:15,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:15,483 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:41:15,483 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:41:15,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-12 02:41:15,483 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:41:15,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:41:15,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1272423025, now seen corresponding path program 11 times [2021-03-12 02:41:15,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:41:15,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364204897] [2021-03-12 02:41:15,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:41:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:41:15,501 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:41:15,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:41:15,507 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:41:15,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:41:15,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:15,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:15,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:15,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:15,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:15,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:15,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:15,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:15,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:15,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:15,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:15,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:15,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:15,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:15,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:15,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:15,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:15,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:15,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:15,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:15,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:15,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:15,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:15,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:15,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:15,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:15,682 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-12 02:41:15,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:41:15,701 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:41:15,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:41:15,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364204897] [2021-03-12 02:41:15,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:41:15,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:41:15,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864350456] [2021-03-12 02:41:15,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:41:15,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:41:15,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:41:15,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:41:15,704 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:41:15,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 1686 transitions, 19278 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:15,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:41:15,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:41:15,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:41:17,909 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-03-12 02:41:18,352 INFO L129 PetriNetUnfolder]: 2983/4900 cut-off events. [2021-03-12 02:41:18,352 INFO L130 PetriNetUnfolder]: For 171674/171747 co-relation queries the response was YES. [2021-03-12 02:41:18,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45534 conditions, 4900 events. 2983/4900 cut-off events. For 171674/171747 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 28533 event pairs, 374 based on Foata normal form. 6/4905 useless extension candidates. Maximal degree in co-relation 45325. Up to 4238 conditions per place. [2021-03-12 02:41:18,423 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 1607 selfloop transitions, 326 changer transitions 2/1943 dead transitions. [2021-03-12 02:41:18,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 1943 transitions, 28857 flow [2021-03-12 02:41:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-12 02:41:18,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-03-12 02:41:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1309 transitions. [2021-03-12 02:41:18,425 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.52485966319166 [2021-03-12 02:41:18,425 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1309 transitions. [2021-03-12 02:41:18,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1309 transitions. [2021-03-12 02:41:18,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:41:18,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1309 transitions. [2021-03-12 02:41:18,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.441860465116278) internal successors, (1309), 43 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:18,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 58.0) internal successors, (2552), 44 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:18,429 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 58.0) internal successors, (2552), 44 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:18,429 INFO L185 Difference]: Start difference. First operand has 554 places, 1686 transitions, 19278 flow. Second operand 43 states and 1309 transitions. [2021-03-12 02:41:18,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 1943 transitions, 28857 flow [2021-03-12 02:41:19,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 1943 transitions, 24891 flow, removed 1983 selfloop flow, removed 1 redundant places. [2021-03-12 02:41:19,982 INFO L241 Difference]: Finished difference. Result has 606 places, 1893 transitions, 21515 flow [2021-03-12 02:41:19,983 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=15366, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=21515, PETRI_PLACES=606, PETRI_TRANSITIONS=1893} [2021-03-12 02:41:19,983 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 567 predicate places. [2021-03-12 02:41:19,983 INFO L480 AbstractCegarLoop]: Abstraction has has 606 places, 1893 transitions, 21515 flow [2021-03-12 02:41:19,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:19,983 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:41:19,983 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:41:19,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-12 02:41:19,983 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:41:19,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:41:19,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1437017353, now seen corresponding path program 12 times [2021-03-12 02:41:19,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:41:19,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102862689] [2021-03-12 02:41:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:41:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:41:19,998 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:41:19,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:41:20,002 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:41:20,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:41:20,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:20,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:20,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:20,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:20,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:20,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:20,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:20,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:20,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:20,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:20,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:20,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:20,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:20,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:20,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:20,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:20,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:20,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:20,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:20,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:20,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:20,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:20,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:20,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:20,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:20,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:20,207 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:41:20,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:41:20,228 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:41:20,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:41:20,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102862689] [2021-03-12 02:41:20,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:41:20,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:41:20,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705737142] [2021-03-12 02:41:20,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:41:20,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:41:20,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:41:20,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:41:20,231 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:41:20,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 1893 transitions, 21515 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:20,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:41:20,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:41:20,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:41:24,342 INFO L129 PetriNetUnfolder]: 3345/5494 cut-off events. [2021-03-12 02:41:24,342 INFO L130 PetriNetUnfolder]: For 198530/198621 co-relation queries the response was YES. [2021-03-12 02:41:24,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53008 conditions, 5494 events. 3345/5494 cut-off events. For 198530/198621 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 32778 event pairs, 352 based on Foata normal form. 22/5515 useless extension candidates. Maximal degree in co-relation 52778. Up to 4535 conditions per place. [2021-03-12 02:41:24,423 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 1598 selfloop transitions, 699 changer transitions 2/2307 dead transitions. [2021-03-12 02:41:24,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 2307 transitions, 37242 flow [2021-03-12 02:41:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-12 02:41:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-03-12 02:41:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 2197 transitions. [2021-03-12 02:41:24,425 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5261015325670498 [2021-03-12 02:41:24,425 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 2197 transitions. [2021-03-12 02:41:24,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 2197 transitions. [2021-03-12 02:41:24,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:41:24,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 2197 transitions. [2021-03-12 02:41:24,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 30.51388888888889) internal successors, (2197), 72 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:24,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 58.0) internal successors, (4234), 73 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:24,432 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 58.0) internal successors, (4234), 73 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:24,432 INFO L185 Difference]: Start difference. First operand has 606 places, 1893 transitions, 21515 flow. Second operand 72 states and 2197 transitions. [2021-03-12 02:41:24,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 2307 transitions, 37242 flow [2021-03-12 02:41:26,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 2307 transitions, 33506 flow, removed 1868 selfloop flow, removed 1 redundant places. [2021-03-12 02:41:26,854 INFO L241 Difference]: Finished difference. Result has 711 places, 2248 transitions, 29903 flow [2021-03-12 02:41:26,856 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=18879, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=29903, PETRI_PLACES=711, PETRI_TRANSITIONS=2248} [2021-03-12 02:41:26,856 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 672 predicate places. [2021-03-12 02:41:26,856 INFO L480 AbstractCegarLoop]: Abstraction has has 711 places, 2248 transitions, 29903 flow [2021-03-12 02:41:26,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:26,856 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:41:26,856 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:41:26,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-12 02:41:26,856 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:41:26,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:41:26,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1088604229, now seen corresponding path program 13 times [2021-03-12 02:41:26,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:41:26,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98435886] [2021-03-12 02:41:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:41:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:41:26,870 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:41:26,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:41:26,873 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:41:26,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:41:26,878 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:41:26,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:41:26,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:26,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:26,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:26,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:26,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:26,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:26,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:26,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:26,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:26,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:26,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:26,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:26,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:26,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:26,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:26,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:26,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:26,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:26,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:26,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:27,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:27,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:27,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:27,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:27,051 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:41:27,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:41:27,072 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:41:27,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:41:27,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98435886] [2021-03-12 02:41:27,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:41:27,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:41:27,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922140059] [2021-03-12 02:41:27,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:41:27,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:41:27,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:41:27,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:41:27,075 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:41:27,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 2248 transitions, 29903 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:27,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:41:27,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:41:27,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:41:31,046 INFO L129 PetriNetUnfolder]: 3521/5794 cut-off events. [2021-03-12 02:41:31,046 INFO L130 PetriNetUnfolder]: For 264407/264501 co-relation queries the response was YES. [2021-03-12 02:41:31,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60247 conditions, 5794 events. 3521/5794 cut-off events. For 264407/264501 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 34959 event pairs, 380 based on Foata normal form. 16/5809 useless extension candidates. Maximal degree in co-relation 59977. Up to 5102 conditions per place. [2021-03-12 02:41:31,156 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 1943 selfloop transitions, 500 changer transitions 4/2455 dead transitions. [2021-03-12 02:41:31,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 764 places, 2455 transitions, 40959 flow [2021-03-12 02:41:31,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-12 02:41:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-03-12 02:41:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1666 transitions. [2021-03-12 02:41:31,158 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5129310344827587 [2021-03-12 02:41:31,158 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 1666 transitions. [2021-03-12 02:41:31,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 1666 transitions. [2021-03-12 02:41:31,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:41:31,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 1666 transitions. [2021-03-12 02:41:31,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 29.75) internal successors, (1666), 56 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:31,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 58.0) internal successors, (3306), 57 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:31,167 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 58.0) internal successors, (3306), 57 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:31,167 INFO L185 Difference]: Start difference. First operand has 711 places, 2248 transitions, 29903 flow. Second operand 56 states and 1666 transitions. [2021-03-12 02:41:31,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 764 places, 2455 transitions, 40959 flow [2021-03-12 02:41:34,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 2455 transitions, 35185 flow, removed 2887 selfloop flow, removed 2 redundant places. [2021-03-12 02:41:34,846 INFO L241 Difference]: Finished difference. Result has 773 places, 2442 transitions, 31339 flow [2021-03-12 02:41:34,848 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=24355, PETRI_DIFFERENCE_MINUEND_PLACES=707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1881, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=31339, PETRI_PLACES=773, PETRI_TRANSITIONS=2442} [2021-03-12 02:41:34,848 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 734 predicate places. [2021-03-12 02:41:34,848 INFO L480 AbstractCegarLoop]: Abstraction has has 773 places, 2442 transitions, 31339 flow [2021-03-12 02:41:34,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:34,848 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:41:34,848 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:41:34,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-12 02:41:34,849 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:41:34,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:41:34,849 INFO L82 PathProgramCache]: Analyzing trace with hash 163681417, now seen corresponding path program 14 times [2021-03-12 02:41:34,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:41:34,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036690617] [2021-03-12 02:41:34,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:41:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:41:34,876 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:41:34,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:41:34,880 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:41:34,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:41:34,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:34,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:34,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:34,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:34,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:34,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:34,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:34,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:34,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:34,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:34,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:34,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:34,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:34,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:34,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:34,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:34,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:34,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:34,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:34,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:35,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:35,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:35,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:35,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:35,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:35,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:35,063 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:41:35,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:41:35,082 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:41:35,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:41:35,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036690617] [2021-03-12 02:41:35,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:41:35,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:41:35,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240319196] [2021-03-12 02:41:35,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:41:35,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:41:35,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:41:35,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:41:35,085 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:41:35,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 2442 transitions, 31339 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:35,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:41:35,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:41:35,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:41:39,058 INFO L129 PetriNetUnfolder]: 3838/6287 cut-off events. [2021-03-12 02:41:39,058 INFO L130 PetriNetUnfolder]: For 275091/275185 co-relation queries the response was YES. [2021-03-12 02:41:39,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63526 conditions, 6287 events. 3838/6287 cut-off events. For 275091/275185 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 38241 event pairs, 277 based on Foata normal form. 22/6308 useless extension candidates. Maximal degree in co-relation 63240. Up to 5282 conditions per place. [2021-03-12 02:41:39,162 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 1972 selfloop transitions, 813 changer transitions 2/2795 dead transitions. [2021-03-12 02:41:39,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 816 places, 2795 transitions, 44611 flow [2021-03-12 02:41:39,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-12 02:41:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-03-12 02:41:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1429 transitions. [2021-03-12 02:41:39,164 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5242112986060161 [2021-03-12 02:41:39,164 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 1429 transitions. [2021-03-12 02:41:39,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 1429 transitions. [2021-03-12 02:41:39,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:41:39,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 1429 transitions. [2021-03-12 02:41:39,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 30.404255319148938) internal successors, (1429), 47 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:39,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 58.0) internal successors, (2784), 48 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:39,168 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 58.0) internal successors, (2784), 48 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:39,168 INFO L185 Difference]: Start difference. First operand has 773 places, 2442 transitions, 31339 flow. Second operand 47 states and 1429 transitions. [2021-03-12 02:41:39,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 816 places, 2795 transitions, 44611 flow [2021-03-12 02:41:42,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 2795 transitions, 39446 flow, removed 2469 selfloop flow, removed 4 redundant places. [2021-03-12 02:41:42,905 INFO L241 Difference]: Finished difference. Result has 828 places, 2735 transitions, 34813 flow [2021-03-12 02:41:42,906 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=26205, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=569, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1824, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=34813, PETRI_PLACES=828, PETRI_TRANSITIONS=2735} [2021-03-12 02:41:42,906 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 789 predicate places. [2021-03-12 02:41:42,906 INFO L480 AbstractCegarLoop]: Abstraction has has 828 places, 2735 transitions, 34813 flow [2021-03-12 02:41:42,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:42,906 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:41:42,906 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:41:42,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-12 02:41:42,906 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:41:42,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:41:42,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1837760319, now seen corresponding path program 15 times [2021-03-12 02:41:42,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:41:42,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561602038] [2021-03-12 02:41:42,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:41:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:41:42,920 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:41:42,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:41:42,923 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:41:42,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:41:42,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:42,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:42,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:42,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:42,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:42,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:42,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:42,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:42,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:42,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:42,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:42,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:42,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:42,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:42,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:42,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:43,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:43,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:43,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:43,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:43,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:43,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:43,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:43,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:43,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:43,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:43,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:41:43,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:41:43,119 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:41:43,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:41:43,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561602038] [2021-03-12 02:41:43,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:41:43,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 02:41:43,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968677179] [2021-03-12 02:41:43,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 02:41:43,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:41:43,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 02:41:43,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-12 02:41:43,122 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:41:43,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 828 places, 2735 transitions, 34813 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:43,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:41:43,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:41:43,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:41:47,419 INFO L129 PetriNetUnfolder]: 3960/6539 cut-off events. [2021-03-12 02:41:47,419 INFO L130 PetriNetUnfolder]: For 290552/290634 co-relation queries the response was YES. [2021-03-12 02:41:47,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66658 conditions, 6539 events. 3960/6539 cut-off events. For 290552/290634 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 40683 event pairs, 351 based on Foata normal form. 18/6556 useless extension candidates. Maximal degree in co-relation 66354. Up to 5414 conditions per place. [2021-03-12 02:41:47,536 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 1963 selfloop transitions, 948 changer transitions 3/2922 dead transitions. [2021-03-12 02:41:47,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 872 places, 2922 transitions, 46130 flow [2021-03-12 02:41:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-12 02:41:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-03-12 02:41:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1400 transitions. [2021-03-12 02:41:47,538 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5135730007336757 [2021-03-12 02:41:47,538 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 1400 transitions. [2021-03-12 02:41:47,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 1400 transitions. [2021-03-12 02:41:47,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:41:47,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 1400 transitions. [2021-03-12 02:41:47,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 29.78723404255319) internal successors, (1400), 47 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:47,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 58.0) internal successors, (2784), 48 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:47,541 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 58.0) internal successors, (2784), 48 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:47,541 INFO L185 Difference]: Start difference. First operand has 828 places, 2735 transitions, 34813 flow. Second operand 47 states and 1400 transitions. [2021-03-12 02:41:47,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 872 places, 2922 transitions, 46130 flow [2021-03-12 02:41:51,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 867 places, 2922 transitions, 41620 flow, removed 2103 selfloop flow, removed 5 redundant places. [2021-03-12 02:41:51,651 INFO L241 Difference]: Finished difference. Result has 882 places, 2884 transitions, 37016 flow [2021-03-12 02:41:51,652 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=31093, PETRI_DIFFERENCE_MINUEND_PLACES=821, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=817, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1889, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=37016, PETRI_PLACES=882, PETRI_TRANSITIONS=2884} [2021-03-12 02:41:51,652 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 843 predicate places. [2021-03-12 02:41:51,652 INFO L480 AbstractCegarLoop]: Abstraction has has 882 places, 2884 transitions, 37016 flow [2021-03-12 02:41:51,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:51,652 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:41:51,652 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:41:51,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-12 02:41:51,652 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:41:51,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:41:51,653 INFO L82 PathProgramCache]: Analyzing trace with hash 124229567, now seen corresponding path program 16 times [2021-03-12 02:41:51,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:41:51,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621810018] [2021-03-12 02:41:51,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:41:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:41:51,666 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:41:51,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:41:51,672 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:41:51,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:41:51,677 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:41:51,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:41:51,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:51,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:51,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:51,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:51,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:51,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:51,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:51,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:51,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:51,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:51,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:51,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:51,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:51,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:51,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:51,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:41:51,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:51,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:51,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:51,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:51,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:51,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:51,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:41:51,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:41:51,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:41:51,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:41:51,865 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:41:51,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:41:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:41:51,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621810018] [2021-03-12 02:41:51,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:41:51,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:41:51,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118374298] [2021-03-12 02:41:51,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:41:51,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:41:51,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:41:51,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:41:51,869 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:41:51,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 882 places, 2884 transitions, 37016 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:51,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:41:51,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:41:51,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:41:56,710 INFO L129 PetriNetUnfolder]: 4203/6937 cut-off events. [2021-03-12 02:41:56,710 INFO L130 PetriNetUnfolder]: For 345219/345301 co-relation queries the response was YES. [2021-03-12 02:41:56,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74305 conditions, 6937 events. 4203/6937 cut-off events. For 345219/345301 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 43437 event pairs, 288 based on Foata normal form. 13/6949 useless extension candidates. Maximal degree in co-relation 73981. Up to 6088 conditions per place. [2021-03-12 02:41:56,843 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 2579 selfloop transitions, 512 changer transitions 3/3102 dead transitions. [2021-03-12 02:41:56,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 3102 transitions, 51531 flow [2021-03-12 02:41:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-03-12 02:41:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-03-12 02:41:56,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1719 transitions. [2021-03-12 02:41:56,845 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5199637023593466 [2021-03-12 02:41:56,845 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 1719 transitions. [2021-03-12 02:41:56,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 1719 transitions. [2021-03-12 02:41:56,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:41:56,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 1719 transitions. [2021-03-12 02:41:56,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 30.157894736842106) internal successors, (1719), 57 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:56,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 58.0) internal successors, (3364), 58 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:56,849 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 58.0) internal successors, (3364), 58 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:41:56,849 INFO L185 Difference]: Start difference. First operand has 882 places, 2884 transitions, 37016 flow. Second operand 57 states and 1719 transitions. [2021-03-12 02:41:56,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 3102 transitions, 51531 flow [2021-03-12 02:42:02,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 3102 transitions, 48549 flow, removed 1321 selfloop flow, removed 5 redundant places. [2021-03-12 02:42:02,140 INFO L241 Difference]: Finished difference. Result has 946 places, 3082 transitions, 43040 flow [2021-03-12 02:42:02,142 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=34048, PETRI_DIFFERENCE_MINUEND_PLACES=875, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2884, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=43040, PETRI_PLACES=946, PETRI_TRANSITIONS=3082} [2021-03-12 02:42:02,142 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 907 predicate places. [2021-03-12 02:42:02,142 INFO L480 AbstractCegarLoop]: Abstraction has has 946 places, 3082 transitions, 43040 flow [2021-03-12 02:42:02,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:02,142 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:42:02,142 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:42:02,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-12 02:42:02,143 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:42:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:42:02,143 INFO L82 PathProgramCache]: Analyzing trace with hash -674350753, now seen corresponding path program 17 times [2021-03-12 02:42:02,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:42:02,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607058658] [2021-03-12 02:42:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:42:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:42:02,158 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:42:02,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:42:02,162 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:42:02,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:42:02,167 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:42:02,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:42:02,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:02,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:02,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:02,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:02,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:02,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:02,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:02,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:02,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:02,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:02,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:02,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:02,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:02,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:02,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:02,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:02,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:02,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:02,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:02,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:02,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:02,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:02,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:02,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:42:02,350 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:42:02,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:42:02,372 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:42:02,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:42:02,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607058658] [2021-03-12 02:42:02,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:42:02,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:42:02,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752965407] [2021-03-12 02:42:02,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:42:02,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:42:02,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:42:02,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:42:02,375 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:42:02,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 946 places, 3082 transitions, 43040 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:02,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:42:02,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:42:02,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:42:04,227 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-03-12 02:42:08,264 INFO L129 PetriNetUnfolder]: 4766/7843 cut-off events. [2021-03-12 02:42:08,264 INFO L130 PetriNetUnfolder]: For 425488/425570 co-relation queries the response was YES. [2021-03-12 02:42:08,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87552 conditions, 7843 events. 4766/7843 cut-off events. For 425488/425570 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 50313 event pairs, 390 based on Foata normal form. 13/7855 useless extension candidates. Maximal degree in co-relation 87210. Up to 6642 conditions per place. [2021-03-12 02:42:08,442 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 2777 selfloop transitions, 871 changer transitions 3/3659 dead transitions. [2021-03-12 02:42:08,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1001 places, 3659 transitions, 64220 flow [2021-03-12 02:42:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-12 02:42:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-03-12 02:42:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1758 transitions. [2021-03-12 02:42:08,444 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5225921521997622 [2021-03-12 02:42:08,444 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1758 transitions. [2021-03-12 02:42:08,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1758 transitions. [2021-03-12 02:42:08,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:42:08,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1758 transitions. [2021-03-12 02:42:08,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 30.310344827586206) internal successors, (1758), 58 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:08,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 58.0) internal successors, (3422), 59 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:08,449 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 58.0) internal successors, (3422), 59 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:08,449 INFO L185 Difference]: Start difference. First operand has 946 places, 3082 transitions, 43040 flow. Second operand 58 states and 1758 transitions. [2021-03-12 02:42:08,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1001 places, 3659 transitions, 64220 flow [2021-03-12 02:42:16,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 998 places, 3659 transitions, 57514 flow, removed 3194 selfloop flow, removed 3 redundant places. [2021-03-12 02:42:16,135 INFO L241 Difference]: Finished difference. Result has 1025 places, 3559 transitions, 50722 flow [2021-03-12 02:42:16,136 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=36403, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3082, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=472, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=50722, PETRI_PLACES=1025, PETRI_TRANSITIONS=3559} [2021-03-12 02:42:16,136 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 986 predicate places. [2021-03-12 02:42:16,136 INFO L480 AbstractCegarLoop]: Abstraction has has 1025 places, 3559 transitions, 50722 flow [2021-03-12 02:42:16,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:16,137 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:42:16,137 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:42:16,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-12 02:42:16,137 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:42:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:42:16,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1304311763, now seen corresponding path program 18 times [2021-03-12 02:42:16,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:42:16,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651476521] [2021-03-12 02:42:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:42:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:42:16,155 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:42:16,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:42:16,161 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:42:16,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:42:16,167 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:42:16,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:42:16,174 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:42:16,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:42:16,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:16,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:16,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:16,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:16,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:16,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:16,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:16,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:42:16,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:16,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:16,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:16,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:16,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:16,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:16,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:16,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:16,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:16,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:42:16,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:16,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:42:16,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:16,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:42:16,367 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:42:16,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:42:16,394 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:42:16,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:42:16,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651476521] [2021-03-12 02:42:16,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:42:16,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:42:16,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110650281] [2021-03-12 02:42:16,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:42:16,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:42:16,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:42:16,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:42:16,397 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:42:16,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1025 places, 3559 transitions, 50722 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:16,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:42:16,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:42:16,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:42:23,947 INFO L129 PetriNetUnfolder]: 5135/8506 cut-off events. [2021-03-12 02:42:23,947 INFO L130 PetriNetUnfolder]: For 542725/542807 co-relation queries the response was YES. [2021-03-12 02:42:24,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100769 conditions, 8506 events. 5135/8506 cut-off events. For 542725/542807 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 55847 event pairs, 289 based on Foata normal form. 15/8520 useless extension candidates. Maximal degree in co-relation 100388. Up to 7299 conditions per place. [2021-03-12 02:42:24,135 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 3199 selfloop transitions, 695 changer transitions 7/3909 dead transitions. [2021-03-12 02:42:24,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1104 places, 3909 transitions, 73588 flow [2021-03-12 02:42:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-03-12 02:42:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-03-12 02:42:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 2486 transitions. [2021-03-12 02:42:24,137 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.522708158116064 [2021-03-12 02:42:24,137 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 2486 transitions. [2021-03-12 02:42:24,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 2486 transitions. [2021-03-12 02:42:24,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:42:24,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 2486 transitions. [2021-03-12 02:42:24,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 30.317073170731707) internal successors, (2486), 82 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:24,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 58.0) internal successors, (4814), 83 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:24,143 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 58.0) internal successors, (4814), 83 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:24,143 INFO L185 Difference]: Start difference. First operand has 1025 places, 3559 transitions, 50722 flow. Second operand 82 states and 2486 transitions. [2021-03-12 02:42:24,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1104 places, 3909 transitions, 73588 flow [2021-03-12 02:42:35,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1102 places, 3909 transitions, 67656 flow, removed 2902 selfloop flow, removed 2 redundant places. [2021-03-12 02:42:35,258 INFO L241 Difference]: Finished difference. Result has 1127 places, 3857 transitions, 59945 flow [2021-03-12 02:42:35,260 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=44816, PETRI_DIFFERENCE_MINUEND_PLACES=1021, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=449, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3077, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=59945, PETRI_PLACES=1127, PETRI_TRANSITIONS=3857} [2021-03-12 02:42:35,261 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1088 predicate places. [2021-03-12 02:42:35,261 INFO L480 AbstractCegarLoop]: Abstraction has has 1127 places, 3857 transitions, 59945 flow [2021-03-12 02:42:35,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:35,261 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:42:35,261 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:42:35,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-12 02:42:35,261 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:42:35,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:42:35,261 INFO L82 PathProgramCache]: Analyzing trace with hash 652391857, now seen corresponding path program 19 times [2021-03-12 02:42:35,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:42:35,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212124690] [2021-03-12 02:42:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:42:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:42:35,275 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:42:35,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:42:35,279 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:42:35,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:42:35,284 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:42:35,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:42:35,292 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:42:35,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:42:35,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:35,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:35,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:35,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:35,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:35,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:35,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:35,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:35,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:35,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:35,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:35,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:35,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:35,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:35,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:35,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:35,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:35,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:35,430 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-12 02:42:35,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 02:42:35,449 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-12 02:42:35,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:42:35,470 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-12 02:42:35,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:42:35,490 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:42:35,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:42:35,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212124690] [2021-03-12 02:42:35,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:42:35,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:42:35,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115381849] [2021-03-12 02:42:35,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:42:35,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:42:35,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:42:35,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:42:35,494 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:42:35,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1127 places, 3857 transitions, 59945 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:35,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:42:35,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:42:35,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:42:42,985 INFO L129 PetriNetUnfolder]: 5463/9008 cut-off events. [2021-03-12 02:42:42,985 INFO L130 PetriNetUnfolder]: For 672844/672926 co-relation queries the response was YES. [2021-03-12 02:42:43,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108859 conditions, 9008 events. 5463/9008 cut-off events. For 672844/672926 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 59374 event pairs, 360 based on Foata normal form. 13/9020 useless extension candidates. Maximal degree in co-relation 108434. Up to 7745 conditions per place. [2021-03-12 02:42:43,203 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 3403 selfloop transitions, 859 changer transitions 4/4274 dead transitions. [2021-03-12 02:42:43,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1160 places, 4274 transitions, 78109 flow [2021-03-12 02:42:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-12 02:42:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-03-12 02:42:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1185 transitions. [2021-03-12 02:42:43,204 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5238726790450928 [2021-03-12 02:42:43,204 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1185 transitions. [2021-03-12 02:42:43,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1185 transitions. [2021-03-12 02:42:43,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:42:43,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1185 transitions. [2021-03-12 02:42:43,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.384615384615383) internal successors, (1185), 39 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:43,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 58.0) internal successors, (2320), 40 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:43,207 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 58.0) internal successors, (2320), 40 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:43,207 INFO L185 Difference]: Start difference. First operand has 1127 places, 3857 transitions, 59945 flow. Second operand 39 states and 1185 transitions. [2021-03-12 02:42:43,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1160 places, 4274 transitions, 78109 flow [2021-03-12 02:42:55,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1152 places, 4274 transitions, 66174 flow, removed 5750 selfloop flow, removed 8 redundant places. [2021-03-12 02:42:55,809 INFO L241 Difference]: Finished difference. Result has 1163 places, 4152 transitions, 57763 flow [2021-03-12 02:42:55,812 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=49074, PETRI_DIFFERENCE_MINUEND_PLACES=1114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=591, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=57763, PETRI_PLACES=1163, PETRI_TRANSITIONS=4152} [2021-03-12 02:42:55,812 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1124 predicate places. [2021-03-12 02:42:55,812 INFO L480 AbstractCegarLoop]: Abstraction has has 1163 places, 4152 transitions, 57763 flow [2021-03-12 02:42:55,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:55,812 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:42:55,812 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:42:55,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-12 02:42:55,813 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:42:55,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:42:55,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1992980373, now seen corresponding path program 20 times [2021-03-12 02:42:55,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:42:55,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600088433] [2021-03-12 02:42:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:42:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:42:55,824 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:42:55,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:42:55,828 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:42:55,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:42:55,834 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:42:55,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:42:55,841 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:42:55,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:42:55,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:55,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:55,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:55,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:55,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:55,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:55,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:55,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:55,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:55,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:55,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:55,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:55,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:55,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:42:55,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:55,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:55,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:55,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:55,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:55,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:42:56,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:42:56,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:42:56,020 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:42:56,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:42:56,039 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:42:56,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:42:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:42:56,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600088433] [2021-03-12 02:42:56,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:42:56,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:42:56,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873360934] [2021-03-12 02:42:56,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:42:56,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:42:56,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:42:56,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:42:56,042 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:42:56,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1163 places, 4152 transitions, 57763 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:42:56,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:42:56,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:42:56,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:43:01,274 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-03-12 02:43:03,992 INFO L129 PetriNetUnfolder]: 5694/9426 cut-off events. [2021-03-12 02:43:03,992 INFO L130 PetriNetUnfolder]: For 690383/690427 co-relation queries the response was YES. [2021-03-12 02:43:04,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111827 conditions, 9426 events. 5694/9426 cut-off events. For 690383/690427 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 63006 event pairs, 391 based on Foata normal form. 13/9438 useless extension candidates. Maximal degree in co-relation 111402. Up to 8312 conditions per place. [2021-03-12 02:43:04,271 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 3713 selfloop transitions, 686 changer transitions 4/4411 dead transitions. [2021-03-12 02:43:04,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1209 places, 4411 transitions, 77634 flow [2021-03-12 02:43:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-12 02:43:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-03-12 02:43:04,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1473 transitions. [2021-03-12 02:43:04,273 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5182969739619986 [2021-03-12 02:43:04,273 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 1473 transitions. [2021-03-12 02:43:04,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 1473 transitions. [2021-03-12 02:43:04,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:43:04,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 1473 transitions. [2021-03-12 02:43:04,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 30.06122448979592) internal successors, (1473), 49 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:43:04,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 58.0) internal successors, (2900), 50 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:43:04,277 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 58.0) internal successors, (2900), 50 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:43:04,277 INFO L185 Difference]: Start difference. First operand has 1163 places, 4152 transitions, 57763 flow. Second operand 49 states and 1473 transitions. [2021-03-12 02:43:04,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1209 places, 4411 transitions, 77634 flow [2021-03-12 02:43:16,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1202 places, 4411 transitions, 73206 flow, removed 2057 selfloop flow, removed 7 redundant places. [2021-03-12 02:43:16,671 INFO L241 Difference]: Finished difference. Result has 1229 places, 4377 transitions, 64151 flow [2021-03-12 02:43:16,673 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=54987, PETRI_DIFFERENCE_MINUEND_PLACES=1154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=64151, PETRI_PLACES=1229, PETRI_TRANSITIONS=4377} [2021-03-12 02:43:16,673 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1190 predicate places. [2021-03-12 02:43:16,674 INFO L480 AbstractCegarLoop]: Abstraction has has 1229 places, 4377 transitions, 64151 flow [2021-03-12 02:43:16,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:43:16,674 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:43:16,674 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:43:16,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-12 02:43:16,674 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:43:16,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:43:16,674 INFO L82 PathProgramCache]: Analyzing trace with hash -861505401, now seen corresponding path program 21 times [2021-03-12 02:43:16,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:43:16,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204050843] [2021-03-12 02:43:16,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:43:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:43:16,686 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:43:16,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:43:16,690 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:43:16,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:43:16,695 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:43:16,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:43:16,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:16,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:43:16,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:16,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:16,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:16,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:16,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:16,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:43:16,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:16,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:16,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:16,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:16,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:16,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:43:16,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:16,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:43:16,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:16,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:43:16,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:16,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:43:16,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:16,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:16,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:16,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:43:16,858 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:43:16,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:43:16,877 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:43:16,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:43:16,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204050843] [2021-03-12 02:43:16,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:43:16,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 02:43:16,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982850546] [2021-03-12 02:43:16,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 02:43:16,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:43:16,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 02:43:16,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-12 02:43:16,880 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:43:16,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1229 places, 4377 transitions, 64151 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:43:16,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:43:16,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:43:16,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:43:25,911 INFO L129 PetriNetUnfolder]: 5914/9812 cut-off events. [2021-03-12 02:43:25,911 INFO L130 PetriNetUnfolder]: For 729840/729884 co-relation queries the response was YES. [2021-03-12 02:43:26,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117119 conditions, 9812 events. 5914/9812 cut-off events. For 729840/729884 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 66336 event pairs, 362 based on Foata normal form. 13/9824 useless extension candidates. Maximal degree in co-relation 116664. Up to 8474 conditions per place. [2021-03-12 02:43:26,159 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 3677 selfloop transitions, 980 changer transitions 4/4669 dead transitions. [2021-03-12 02:43:26,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1290 places, 4669 transitions, 83058 flow [2021-03-12 02:43:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-12 02:43:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-03-12 02:43:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 1927 transitions. [2021-03-12 02:43:26,161 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5191271551724138 [2021-03-12 02:43:26,161 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 1927 transitions. [2021-03-12 02:43:26,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 1927 transitions. [2021-03-12 02:43:26,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:43:26,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 1927 transitions. [2021-03-12 02:43:26,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 30.109375) internal successors, (1927), 64 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:43:26,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 58.0) internal successors, (3770), 65 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:43:26,166 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 58.0) internal successors, (3770), 65 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:43:26,166 INFO L185 Difference]: Start difference. First operand has 1229 places, 4377 transitions, 64151 flow. Second operand 64 states and 1927 transitions. [2021-03-12 02:43:26,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1290 places, 4669 transitions, 83058 flow [2021-03-12 02:43:40,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1284 places, 4669 transitions, 78352 flow, removed 2165 selfloop flow, removed 6 redundant places. [2021-03-12 02:43:40,620 INFO L241 Difference]: Finished difference. Result has 1310 places, 4616 transitions, 69906 flow [2021-03-12 02:43:40,622 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=59460, PETRI_DIFFERENCE_MINUEND_PLACES=1221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=771, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=69906, PETRI_PLACES=1310, PETRI_TRANSITIONS=4616} [2021-03-12 02:43:40,622 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1271 predicate places. [2021-03-12 02:43:40,622 INFO L480 AbstractCegarLoop]: Abstraction has has 1310 places, 4616 transitions, 69906 flow [2021-03-12 02:43:40,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:43:40,622 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:43:40,622 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:43:40,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-12 02:43:40,622 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:43:40,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:43:40,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1903863911, now seen corresponding path program 22 times [2021-03-12 02:43:40,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:43:40,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514464949] [2021-03-12 02:43:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:43:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:43:40,638 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:43:40,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:43:40,642 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:43:40,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:43:40,648 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:43:40,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:43:40,655 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:43:40,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:43:40,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:40,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:40,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:40,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:40,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:40,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:40,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:40,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:40,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:40,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:40,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:40,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:40,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:40,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:40,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:40,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:43:40,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:40,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:43:40,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:43:40,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:40,785 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 02:43:40,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 02:43:40,789 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:43:40,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:43:40,808 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:43:40,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:43:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:43:40,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514464949] [2021-03-12 02:43:40,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:43:40,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-12 02:43:40,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468133313] [2021-03-12 02:43:40,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-12 02:43:40,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:43:40,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-12 02:43:40,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-12 02:43:40,811 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:43:40,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1310 places, 4616 transitions, 69906 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:43:40,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:43:40,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:43:40,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:43:49,174 INFO L129 PetriNetUnfolder]: 5940/9848 cut-off events. [2021-03-12 02:43:49,174 INFO L130 PetriNetUnfolder]: For 794860/794904 co-relation queries the response was YES. [2021-03-12 02:43:49,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119683 conditions, 9848 events. 5940/9848 cut-off events. For 794860/794904 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 66528 event pairs, 449 based on Foata normal form. 13/9860 useless extension candidates. Maximal degree in co-relation 119215. Up to 8941 conditions per place. [2021-03-12 02:43:49,437 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4105 selfloop transitions, 539 changer transitions 2/4654 dead transitions. [2021-03-12 02:43:49,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1330 places, 4654 transitions, 81250 flow [2021-03-12 02:43:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-12 02:43:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-03-12 02:43:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 728 transitions. [2021-03-12 02:43:49,439 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5229885057471264 [2021-03-12 02:43:49,439 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 728 transitions. [2021-03-12 02:43:49,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 728 transitions. [2021-03-12 02:43:49,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:43:49,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 728 transitions. [2021-03-12 02:43:49,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 30.333333333333332) internal successors, (728), 24 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:43:49,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 58.0) internal successors, (1450), 25 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:43:49,440 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 58.0) internal successors, (1450), 25 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:43:49,440 INFO L185 Difference]: Start difference. First operand has 1310 places, 4616 transitions, 69906 flow. Second operand 24 states and 728 transitions. [2021-03-12 02:43:49,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1330 places, 4654 transitions, 81250 flow [2021-03-12 02:44:03,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1319 places, 4654 transitions, 74686 flow, removed 2937 selfloop flow, removed 11 redundant places. [2021-03-12 02:44:03,464 INFO L241 Difference]: Finished difference. Result has 1324 places, 4640 transitions, 65627 flow [2021-03-12 02:44:03,466 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=63348, PETRI_DIFFERENCE_MINUEND_PLACES=1296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4090, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=65627, PETRI_PLACES=1324, PETRI_TRANSITIONS=4640} [2021-03-12 02:44:03,466 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1285 predicate places. [2021-03-12 02:44:03,466 INFO L480 AbstractCegarLoop]: Abstraction has has 1324 places, 4640 transitions, 65627 flow [2021-03-12 02:44:03,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:44:03,466 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:44:03,466 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:44:03,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-12 02:44:03,466 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:44:03,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:44:03,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2056835153, now seen corresponding path program 23 times [2021-03-12 02:44:03,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:44:03,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775039011] [2021-03-12 02:44:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:44:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:44:03,486 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:44:03,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:44:03,491 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:44:03,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:44:03,496 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:44:03,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:44:03,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:03,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:03,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:03,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:03,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:03,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:03,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:03,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:03,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:03,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:44:03,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:03,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:44:03,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:03,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:03,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:03,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:03,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:03,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:03,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:03,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:03,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:03,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:03,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:03,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:44:03,652 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:44:03,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:44:03,671 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:44:03,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:44:03,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775039011] [2021-03-12 02:44:03,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:44:03,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-12 02:44:03,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273829064] [2021-03-12 02:44:03,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-12 02:44:03,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:44:03,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-12 02:44:03,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-12 02:44:03,674 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:44:03,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1324 places, 4640 transitions, 65627 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:44:03,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:44:03,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:44:03,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:44:13,287 INFO L129 PetriNetUnfolder]: 6297/10440 cut-off events. [2021-03-12 02:44:13,287 INFO L130 PetriNetUnfolder]: For 846498/846542 co-relation queries the response was YES. [2021-03-12 02:44:13,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126562 conditions, 10440 events. 6297/10440 cut-off events. For 846498/846542 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 71352 event pairs, 349 based on Foata normal form. 13/10452 useless extension candidates. Maximal degree in co-relation 126082. Up to 8942 conditions per place. [2021-03-12 02:44:13,570 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 3860 selfloop transitions, 1121 changer transitions 3/4992 dead transitions. [2021-03-12 02:44:13,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1371 places, 4992 transitions, 86569 flow [2021-03-12 02:44:13,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-12 02:44:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-03-12 02:44:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 1534 transitions. [2021-03-12 02:44:13,572 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5289655172413793 [2021-03-12 02:44:13,572 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 1534 transitions. [2021-03-12 02:44:13,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 1534 transitions. [2021-03-12 02:44:13,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:44:13,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 1534 transitions. [2021-03-12 02:44:13,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 30.68) internal successors, (1534), 50 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:44:13,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 58.0) internal successors, (2958), 51 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:44:13,575 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 58.0) internal successors, (2958), 51 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:44:13,575 INFO L185 Difference]: Start difference. First operand has 1324 places, 4640 transitions, 65627 flow. Second operand 50 states and 1534 transitions. [2021-03-12 02:44:13,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1371 places, 4992 transitions, 86569 flow [2021-03-12 02:44:29,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1359 places, 4992 transitions, 85217 flow, removed 371 selfloop flow, removed 12 redundant places. [2021-03-12 02:44:29,984 INFO L241 Difference]: Finished difference. Result has 1380 places, 4915 transitions, 75080 flow [2021-03-12 02:44:29,987 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=64287, PETRI_DIFFERENCE_MINUEND_PLACES=1310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=878, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=75080, PETRI_PLACES=1380, PETRI_TRANSITIONS=4915} [2021-03-12 02:44:29,987 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1341 predicate places. [2021-03-12 02:44:29,987 INFO L480 AbstractCegarLoop]: Abstraction has has 1380 places, 4915 transitions, 75080 flow [2021-03-12 02:44:29,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:44:29,988 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:44:29,988 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:44:29,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-12 02:44:29,988 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:44:29,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:44:29,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1881081187, now seen corresponding path program 24 times [2021-03-12 02:44:29,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:44:29,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532477522] [2021-03-12 02:44:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:44:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:44:30,000 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:44:30,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:44:30,004 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:44:30,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:44:30,010 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:44:30,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:44:30,016 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:44:30,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:44:30,027 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:44:30,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:44:30,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:30,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:30,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:30,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:30,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:30,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:30,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:30,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:30,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:30,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:30,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:30,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:30,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:30,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:30,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:30,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:30,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:30,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:30,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:30,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:44:30,184 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-12 02:44:30,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:44:30,205 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:44:30,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:44:30,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532477522] [2021-03-12 02:44:30,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:44:30,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 02:44:30,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987041680] [2021-03-12 02:44:30,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 02:44:30,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:44:30,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 02:44:30,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-12 02:44:30,209 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:44:30,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1380 places, 4915 transitions, 75080 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:44:30,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:44:30,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:44:30,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:44:40,202 INFO L129 PetriNetUnfolder]: 6375/10554 cut-off events. [2021-03-12 02:44:40,202 INFO L130 PetriNetUnfolder]: For 971652/971696 co-relation queries the response was YES. [2021-03-12 02:44:40,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132569 conditions, 10554 events. 6375/10554 cut-off events. For 971652/971696 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 71992 event pairs, 408 based on Foata normal form. 13/10566 useless extension candidates. Maximal degree in co-relation 132056. Up to 9591 conditions per place. [2021-03-12 02:44:40,505 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4442 selfloop transitions, 596 changer transitions 3/5049 dead transitions. [2021-03-12 02:44:40,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1405 places, 5049 transitions, 87549 flow [2021-03-12 02:44:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-12 02:44:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-03-12 02:44:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 837 transitions. [2021-03-12 02:44:40,506 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5153940886699507 [2021-03-12 02:44:40,506 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 837 transitions. [2021-03-12 02:44:40,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 837 transitions. [2021-03-12 02:44:40,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:44:40,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 837 transitions. [2021-03-12 02:44:40,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 29.892857142857142) internal successors, (837), 28 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:44:40,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 58.0) internal successors, (1682), 29 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:44:40,508 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 58.0) internal successors, (1682), 29 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:44:40,508 INFO L185 Difference]: Start difference. First operand has 1380 places, 4915 transitions, 75080 flow. Second operand 28 states and 837 transitions. [2021-03-12 02:44:40,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1405 places, 5049 transitions, 87549 flow [2021-03-12 02:44:58,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1392 places, 5049 transitions, 83541 flow, removed 1525 selfloop flow, removed 13 redundant places. [2021-03-12 02:44:58,997 INFO L241 Difference]: Finished difference. Result has 1403 places, 5025 transitions, 74475 flow [2021-03-12 02:44:59,000 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=71074, PETRI_DIFFERENCE_MINUEND_PLACES=1365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4915, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=74475, PETRI_PLACES=1403, PETRI_TRANSITIONS=5025} [2021-03-12 02:44:59,000 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1364 predicate places. [2021-03-12 02:44:59,000 INFO L480 AbstractCegarLoop]: Abstraction has has 1403 places, 5025 transitions, 74475 flow [2021-03-12 02:44:59,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:44:59,000 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:44:59,000 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:44:59,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-12 02:44:59,000 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:44:59,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:44:59,001 INFO L82 PathProgramCache]: Analyzing trace with hash 268941387, now seen corresponding path program 25 times [2021-03-12 02:44:59,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:44:59,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081198196] [2021-03-12 02:44:59,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:44:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:44:59,011 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:44:59,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:44:59,015 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:44:59,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:44:59,021 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:44:59,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:44:59,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:59,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:59,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:59,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:59,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:59,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:59,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:59,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:59,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:59,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:59,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:59,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:59,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:59,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:59,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:59,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:59,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:59,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:59,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:59,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:44:59,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:59,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:59,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:44:59,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:44:59,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:44:59,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:44:59,234 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:44:59,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:44:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:44:59,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081198196] [2021-03-12 02:44:59,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:44:59,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:44:59,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594842933] [2021-03-12 02:44:59,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:44:59,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:44:59,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:44:59,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:44:59,237 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:44:59,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1403 places, 5025 transitions, 74475 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:44:59,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:44:59,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:44:59,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:45:09,524 INFO L129 PetriNetUnfolder]: 6416/10669 cut-off events. [2021-03-12 02:45:09,524 INFO L130 PetriNetUnfolder]: For 990557/990601 co-relation queries the response was YES. [2021-03-12 02:45:09,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132857 conditions, 10669 events. 6416/10669 cut-off events. For 990557/990601 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 73406 event pairs, 398 based on Foata normal form. 13/10681 useless extension candidates. Maximal degree in co-relation 132341. Up to 9273 conditions per place. [2021-03-12 02:45:09,839 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4111 selfloop transitions, 1026 changer transitions 3/5148 dead transitions. [2021-03-12 02:45:09,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1440 places, 5148 transitions, 89537 flow [2021-03-12 02:45:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-12 02:45:09,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-03-12 02:45:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1213 transitions. [2021-03-12 02:45:09,840 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5228448275862069 [2021-03-12 02:45:09,840 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 1213 transitions. [2021-03-12 02:45:09,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 1213 transitions. [2021-03-12 02:45:09,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:45:09,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 1213 transitions. [2021-03-12 02:45:09,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 30.325) internal successors, (1213), 40 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:45:09,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 58.0) internal successors, (2378), 41 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:45:09,843 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 58.0) internal successors, (2378), 41 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:45:09,843 INFO L185 Difference]: Start difference. First operand has 1403 places, 5025 transitions, 74475 flow. Second operand 40 states and 1213 transitions. [2021-03-12 02:45:09,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1440 places, 5148 transitions, 89537 flow [2021-03-12 02:45:28,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1434 places, 5148 transitions, 88444 flow, removed 324 selfloop flow, removed 6 redundant places. [2021-03-12 02:45:29,046 INFO L241 Difference]: Finished difference. Result has 1441 places, 5092 transitions, 78212 flow [2021-03-12 02:45:29,050 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=73384, PETRI_DIFFERENCE_MINUEND_PLACES=1395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5025, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=971, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4040, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=78212, PETRI_PLACES=1441, PETRI_TRANSITIONS=5092} [2021-03-12 02:45:29,050 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1402 predicate places. [2021-03-12 02:45:29,050 INFO L480 AbstractCegarLoop]: Abstraction has has 1441 places, 5092 transitions, 78212 flow [2021-03-12 02:45:29,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:45:29,050 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:45:29,050 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:45:29,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-12 02:45:29,050 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:45:29,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:45:29,050 INFO L82 PathProgramCache]: Analyzing trace with hash -827283205, now seen corresponding path program 26 times [2021-03-12 02:45:29,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:45:29,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408505326] [2021-03-12 02:45:29,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:45:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:45:29,067 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:45:29,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:45:29,071 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:45:29,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:45:29,077 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:45:29,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:45:29,083 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:45:29,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:45:29,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:29,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:45:29,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:29,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:45:29,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:29,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:45:29,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:29,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:45:29,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:29,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:45:29,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:29,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:45:29,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:29,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:45:29,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:29,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:45:29,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:29,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:45:29,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:29,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:45:29,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:29,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:45:29,276 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-12 02:45:29,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:45:29,299 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:45:29,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:45:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:45:29,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408505326] [2021-03-12 02:45:29,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:45:29,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:45:29,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255379032] [2021-03-12 02:45:29,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:45:29,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:45:29,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:45:29,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:45:29,302 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:45:29,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1441 places, 5092 transitions, 78212 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:45:29,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:45:29,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:45:29,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:45:39,692 INFO L129 PetriNetUnfolder]: 6431/10703 cut-off events. [2021-03-12 02:45:39,692 INFO L130 PetriNetUnfolder]: For 1022953/1022997 co-relation queries the response was YES. [2021-03-12 02:45:39,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135534 conditions, 10703 events. 6431/10703 cut-off events. For 1022953/1022997 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 73640 event pairs, 405 based on Foata normal form. 13/10715 useless extension candidates. Maximal degree in co-relation 134998. Up to 9611 conditions per place. [2021-03-12 02:45:40,010 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4395 selfloop transitions, 732 changer transitions 3/5138 dead transitions. [2021-03-12 02:45:40,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1470 places, 5138 transitions, 89936 flow [2021-03-12 02:45:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-12 02:45:40,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-03-12 02:45:40,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 956 transitions. [2021-03-12 02:45:40,011 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5150862068965517 [2021-03-12 02:45:40,011 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 956 transitions. [2021-03-12 02:45:40,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 956 transitions. [2021-03-12 02:45:40,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:45:40,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 956 transitions. [2021-03-12 02:45:40,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 29.875) internal successors, (956), 32 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:45:40,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 58.0) internal successors, (1914), 33 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:45:40,013 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 58.0) internal successors, (1914), 33 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:45:40,013 INFO L185 Difference]: Start difference. First operand has 1441 places, 5092 transitions, 78212 flow. Second operand 32 states and 956 transitions. [2021-03-12 02:45:40,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1470 places, 5138 transitions, 89936 flow [2021-03-12 02:45:58,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1452 places, 5138 transitions, 87121 flow, removed 873 selfloop flow, removed 18 redundant places. [2021-03-12 02:45:58,537 INFO L241 Difference]: Finished difference. Result has 1458 places, 5122 transitions, 77928 flow [2021-03-12 02:45:58,541 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=75399, PETRI_DIFFERENCE_MINUEND_PLACES=1421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5092, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=706, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=77928, PETRI_PLACES=1458, PETRI_TRANSITIONS=5122} [2021-03-12 02:45:58,541 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1419 predicate places. [2021-03-12 02:45:58,541 INFO L480 AbstractCegarLoop]: Abstraction has has 1458 places, 5122 transitions, 77928 flow [2021-03-12 02:45:58,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:45:58,541 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:45:58,541 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:45:58,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-12 02:45:58,541 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:45:58,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:45:58,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1958213267, now seen corresponding path program 27 times [2021-03-12 02:45:58,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:45:58,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906618795] [2021-03-12 02:45:58,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:45:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:45:58,554 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:45:58,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:45:58,562 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:45:58,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:45:58,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:58,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:45:58,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:58,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:45:58,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:58,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:45:58,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:58,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:45:58,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:58,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:45:58,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:58,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:45:58,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:58,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:45:58,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:58,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:45:58,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:58,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:45:58,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:58,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:45:58,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:58,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:45:58,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:58,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:45:58,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:45:58,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:45:58,755 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:45:58,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:45:58,776 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:45:58,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:45:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:45:58,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906618795] [2021-03-12 02:45:58,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:45:58,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:45:58,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112064999] [2021-03-12 02:45:58,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:45:58,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:45:58,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:45:58,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:45:58,779 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:45:58,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1458 places, 5122 transitions, 77928 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:45:58,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:45:58,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:45:58,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:46:10,787 INFO L129 PetriNetUnfolder]: 6793/11329 cut-off events. [2021-03-12 02:46:10,787 INFO L130 PetriNetUnfolder]: For 1188261/1188305 co-relation queries the response was YES. [2021-03-12 02:46:11,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148789 conditions, 11329 events. 6793/11329 cut-off events. For 1188261/1188305 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 79165 event pairs, 400 based on Foata normal form. 18/11346 useless extension candidates. Maximal degree in co-relation 148249. Up to 9683 conditions per place. [2021-03-12 02:46:11,124 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4328 selfloop transitions, 1296 changer transitions 2/5634 dead transitions. [2021-03-12 02:46:11,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1518 places, 5634 transitions, 105727 flow [2021-03-12 02:46:11,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-03-12 02:46:11,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-03-12 02:46:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 1910 transitions. [2021-03-12 02:46:11,126 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5227148330596606 [2021-03-12 02:46:11,126 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 1910 transitions. [2021-03-12 02:46:11,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 1910 transitions. [2021-03-12 02:46:11,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:46:11,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 1910 transitions. [2021-03-12 02:46:11,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 30.317460317460316) internal successors, (1910), 63 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:46:11,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 58.0) internal successors, (3712), 64 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:46:11,129 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 58.0) internal successors, (3712), 64 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:46:11,129 INFO L185 Difference]: Start difference. First operand has 1458 places, 5122 transitions, 77928 flow. Second operand 63 states and 1910 transitions. [2021-03-12 02:46:11,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1518 places, 5634 transitions, 105727 flow [2021-03-12 02:46:33,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1503 places, 5634 transitions, 104156 flow, removed 415 selfloop flow, removed 15 redundant places. [2021-03-12 02:46:33,251 INFO L241 Difference]: Finished difference. Result has 1525 places, 5537 transitions, 94110 flow [2021-03-12 02:46:33,254 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=76471, PETRI_DIFFERENCE_MINUEND_PLACES=1441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=931, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=94110, PETRI_PLACES=1525, PETRI_TRANSITIONS=5537} [2021-03-12 02:46:33,254 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1486 predicate places. [2021-03-12 02:46:33,254 INFO L480 AbstractCegarLoop]: Abstraction has has 1525 places, 5537 transitions, 94110 flow [2021-03-12 02:46:33,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:46:33,254 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:46:33,254 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:46:33,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-12 02:46:33,254 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:46:33,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:46:33,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1379459275, now seen corresponding path program 28 times [2021-03-12 02:46:33,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:46:33,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008337479] [2021-03-12 02:46:33,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:46:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:46:33,265 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:46:33,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:46:33,269 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:46:33,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:46:33,274 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:46:33,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:46:33,281 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:46:33,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:46:33,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:46:33,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:46:33,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:46:33,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:46:33,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:46:33,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:46:33,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:46:33,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:46:33,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:46:33,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:46:33,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:46:33,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:46:33,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:46:33,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:46:33,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:46:33,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:46:33,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:46:33,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:46:33,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:46:33,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:46:33,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 02:46:33,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 02:46:33,451 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:46:33,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:46:33,479 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:46:33,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:46:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:46:33,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008337479] [2021-03-12 02:46:33,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:46:33,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:46:33,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350031883] [2021-03-12 02:46:33,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:46:33,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:46:33,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:46:33,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:46:33,482 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:46:33,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1525 places, 5537 transitions, 94110 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:46:33,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:46:33,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:46:33,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:46:45,536 INFO L129 PetriNetUnfolder]: 6806/11352 cut-off events. [2021-03-12 02:46:45,536 INFO L130 PetriNetUnfolder]: For 1240693/1240737 co-relation queries the response was YES. [2021-03-12 02:46:45,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152956 conditions, 11352 events. 6806/11352 cut-off events. For 1240693/1240737 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 79118 event pairs, 441 based on Foata normal form. 13/11364 useless extension candidates. Maximal degree in co-relation 152423. Up to 10273 conditions per place. [2021-03-12 02:46:45,982 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4885 selfloop transitions, 681 changer transitions 3/5577 dead transitions. [2021-03-12 02:46:45,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1554 places, 5577 transitions, 106583 flow [2021-03-12 02:46:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-12 02:46:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-03-12 02:46:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 953 transitions. [2021-03-12 02:46:45,983 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5134698275862069 [2021-03-12 02:46:45,984 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 953 transitions. [2021-03-12 02:46:45,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 953 transitions. [2021-03-12 02:46:45,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:46:45,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 953 transitions. [2021-03-12 02:46:45,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 29.78125) internal successors, (953), 32 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:46:45,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 58.0) internal successors, (1914), 33 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:46:45,985 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 58.0) internal successors, (1914), 33 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:46:45,985 INFO L185 Difference]: Start difference. First operand has 1525 places, 5537 transitions, 94110 flow. Second operand 32 states and 953 transitions. [2021-03-12 02:46:45,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1554 places, 5577 transitions, 106583 flow [2021-03-12 02:47:10,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1544 places, 5577 transitions, 96283 flow, removed 4809 selfloop flow, removed 10 redundant places. [2021-03-12 02:47:10,073 INFO L241 Difference]: Finished difference. Result has 1548 places, 5562 transitions, 86172 flow [2021-03-12 02:47:10,076 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=83814, PETRI_DIFFERENCE_MINUEND_PLACES=1513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=664, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4870, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=86172, PETRI_PLACES=1548, PETRI_TRANSITIONS=5562} [2021-03-12 02:47:10,076 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1509 predicate places. [2021-03-12 02:47:10,076 INFO L480 AbstractCegarLoop]: Abstraction has has 1548 places, 5562 transitions, 86172 flow [2021-03-12 02:47:10,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:47:10,076 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:47:10,076 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:47:10,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-12 02:47:10,077 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:47:10,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:47:10,077 INFO L82 PathProgramCache]: Analyzing trace with hash 721043031, now seen corresponding path program 29 times [2021-03-12 02:47:10,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:47:10,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639987662] [2021-03-12 02:47:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:47:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:47:10,093 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:47:10,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:47:10,098 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:47:10,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:47:10,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:10,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:10,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:10,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:10,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:10,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:10,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:10,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:10,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:10,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:10,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:10,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:10,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:10,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:10,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:10,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:47:10,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:10,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:10,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:10,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:10,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:10,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:10,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:10,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:47:10,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:10,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:47:10,249 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:47:10,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:47:10,269 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:47:10,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:47:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:47:10,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639987662] [2021-03-12 02:47:10,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:47:10,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-12 02:47:10,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925830361] [2021-03-12 02:47:10,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-12 02:47:10,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:47:10,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-12 02:47:10,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-12 02:47:10,272 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:47:10,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1548 places, 5562 transitions, 86172 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:47:10,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:47:10,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:47:10,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:47:22,748 INFO L129 PetriNetUnfolder]: 7017/11736 cut-off events. [2021-03-12 02:47:22,748 INFO L130 PetriNetUnfolder]: For 1169212/1169256 co-relation queries the response was YES. [2021-03-12 02:47:23,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151873 conditions, 11736 events. 7017/11736 cut-off events. For 1169212/1169256 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 82874 event pairs, 424 based on Foata normal form. 18/11753 useless extension candidates. Maximal degree in co-relation 151342. Up to 10118 conditions per place. [2021-03-12 02:47:23,114 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4551 selfloop transitions, 1271 changer transitions 2/5832 dead transitions. [2021-03-12 02:47:23,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1596 places, 5832 transitions, 107226 flow [2021-03-12 02:47:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-12 02:47:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-03-12 02:47:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 1603 transitions. [2021-03-12 02:47:23,116 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.531498673740053 [2021-03-12 02:47:23,116 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 1603 transitions. [2021-03-12 02:47:23,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 1603 transitions. [2021-03-12 02:47:23,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:47:23,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 1603 transitions. [2021-03-12 02:47:23,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 30.826923076923077) internal successors, (1603), 52 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:47:23,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 58.0) internal successors, (3074), 53 states have internal predecessors, (3074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:47:23,118 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 58.0) internal successors, (3074), 53 states have internal predecessors, (3074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:47:23,118 INFO L185 Difference]: Start difference. First operand has 1548 places, 5562 transitions, 86172 flow. Second operand 52 states and 1603 transitions. [2021-03-12 02:47:23,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1596 places, 5832 transitions, 107226 flow [2021-03-12 02:47:46,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1582 places, 5832 transitions, 105654 flow, removed 437 selfloop flow, removed 14 redundant places. [2021-03-12 02:47:46,755 INFO L241 Difference]: Finished difference. Result has 1607 places, 5788 transitions, 95582 flow [2021-03-12 02:47:46,757 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=84632, PETRI_DIFFERENCE_MINUEND_PLACES=1531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1065, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=95582, PETRI_PLACES=1607, PETRI_TRANSITIONS=5788} [2021-03-12 02:47:46,757 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1568 predicate places. [2021-03-12 02:47:46,757 INFO L480 AbstractCegarLoop]: Abstraction has has 1607 places, 5788 transitions, 95582 flow [2021-03-12 02:47:46,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:47:46,758 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:47:46,758 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:47:46,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-12 02:47:46,758 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:47:46,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:47:46,758 INFO L82 PathProgramCache]: Analyzing trace with hash -755663677, now seen corresponding path program 30 times [2021-03-12 02:47:46,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:47:46,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134321869] [2021-03-12 02:47:46,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:47:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:47:46,768 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:47:46,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:47:46,772 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:47:46,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:47:46,778 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:47:46,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:47:46,785 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:47:46,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:47:46,793 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:47:46,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:47:46,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:46,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:47:46,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:46,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:47:46,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:46,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:47:46,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:46,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:46,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:46,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:46,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:46,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:46,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:46,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:46,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:46,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:47:46,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:47:46,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:47:46,926 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 02:47:46,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 02:47:46,944 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:47:46,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:47:46,964 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:47:46,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:47:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:47:46,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134321869] [2021-03-12 02:47:46,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:47:46,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 02:47:46,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754868136] [2021-03-12 02:47:46,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 02:47:46,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:47:46,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 02:47:46,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-12 02:47:46,967 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:47:46,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1607 places, 5788 transitions, 95582 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:47:46,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:47:46,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:47:46,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:47:59,669 INFO L129 PetriNetUnfolder]: 7028/11778 cut-off events. [2021-03-12 02:47:59,669 INFO L130 PetriNetUnfolder]: For 1254810/1254854 co-relation queries the response was YES. [2021-03-12 02:47:59,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156426 conditions, 11778 events. 7028/11778 cut-off events. For 1254810/1254854 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 83454 event pairs, 414 based on Foata normal form. 13/11790 useless extension candidates. Maximal degree in co-relation 155870. Up to 10718 conditions per place. [2021-03-12 02:48:00,054 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 5234 selfloop transitions, 596 changer transitions 3/5841 dead transitions. [2021-03-12 02:48:00,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1634 places, 5841 transitions, 108821 flow [2021-03-12 02:48:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-12 02:48:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-03-12 02:48:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 893 transitions. [2021-03-12 02:48:00,056 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5132183908045977 [2021-03-12 02:48:00,056 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 893 transitions. [2021-03-12 02:48:00,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 893 transitions. [2021-03-12 02:48:00,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:48:00,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 893 transitions. [2021-03-12 02:48:00,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 29.766666666666666) internal successors, (893), 30 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:48:00,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 58.0) internal successors, (1798), 31 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:48:00,057 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 58.0) internal successors, (1798), 31 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:48:00,057 INFO L185 Difference]: Start difference. First operand has 1607 places, 5788 transitions, 95582 flow. Second operand 30 states and 893 transitions. [2021-03-12 02:48:00,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1634 places, 5841 transitions, 108821 flow [2021-03-12 02:48:25,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1625 places, 5841 transitions, 102496 flow, removed 2754 selfloop flow, removed 9 redundant places. [2021-03-12 02:48:25,586 INFO L241 Difference]: Finished difference. Result has 1632 places, 5820 transitions, 91758 flow [2021-03-12 02:48:25,588 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=89257, PETRI_DIFFERENCE_MINUEND_PLACES=1596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=569, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=91758, PETRI_PLACES=1632, PETRI_TRANSITIONS=5820} [2021-03-12 02:48:25,588 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1593 predicate places. [2021-03-12 02:48:25,588 INFO L480 AbstractCegarLoop]: Abstraction has has 1632 places, 5820 transitions, 91758 flow [2021-03-12 02:48:25,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:48:25,588 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:48:25,588 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:48:25,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-12 02:48:25,588 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:48:25,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:48:25,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1077311839, now seen corresponding path program 31 times [2021-03-12 02:48:25,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:48:25,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903639232] [2021-03-12 02:48:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:48:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:48:25,603 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:48:25,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:48:25,607 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:48:25,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:48:25,612 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:48:25,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:48:25,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:48:25,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:48:25,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:48:25,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:48:25,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:48:25,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:48:25,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:48:25,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:48:25,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:48:25,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:48:25,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:48:25,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:48:25,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:48:25,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:48:25,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:48:25,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:48:25,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:48:25,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:48:25,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:48:25,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:48:25,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:48:25,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:48:25,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:48:25,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:48:25,783 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:48:25,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:48:25,803 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:48:25,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:48:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:48:25,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903639232] [2021-03-12 02:48:25,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:48:25,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 02:48:25,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220486522] [2021-03-12 02:48:25,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 02:48:25,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:48:25,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 02:48:25,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-12 02:48:25,807 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:48:25,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1632 places, 5820 transitions, 91758 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:48:25,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:48:25,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:48:25,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:48:38,115 INFO L129 PetriNetUnfolder]: 7048/11845 cut-off events. [2021-03-12 02:48:38,115 INFO L130 PetriNetUnfolder]: For 1224085/1224129 co-relation queries the response was YES. [2021-03-12 02:48:38,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 153738 conditions, 11845 events. 7048/11845 cut-off events. For 1224085/1224129 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 84321 event pairs, 400 based on Foata normal form. 13/11857 useless extension candidates. Maximal degree in co-relation 153175. Up to 10503 conditions per place. [2021-03-12 02:48:38,502 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4935 selfloop transitions, 948 changer transitions 3/5894 dead transitions. [2021-03-12 02:48:38,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1656 places, 5894 transitions, 106138 flow [2021-03-12 02:48:38,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-12 02:48:38,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-03-12 02:48:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 843 transitions. [2021-03-12 02:48:38,503 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5190886699507389 [2021-03-12 02:48:38,503 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 843 transitions. [2021-03-12 02:48:38,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 843 transitions. [2021-03-12 02:48:38,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:48:38,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 843 transitions. [2021-03-12 02:48:38,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 30.107142857142858) internal successors, (843), 28 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:48:38,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 58.0) internal successors, (1682), 29 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:48:38,505 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 58.0) internal successors, (1682), 29 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:48:38,505 INFO L185 Difference]: Start difference. First operand has 1632 places, 5820 transitions, 91758 flow. Second operand 28 states and 843 transitions. [2021-03-12 02:48:38,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1656 places, 5894 transitions, 106138 flow [2021-03-12 02:49:02,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1642 places, 5894 transitions, 104394 flow, removed 517 selfloop flow, removed 14 redundant places. [2021-03-12 02:49:03,018 INFO L241 Difference]: Finished difference. Result has 1653 places, 5868 transitions, 93580 flow [2021-03-12 02:49:03,019 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=90016, PETRI_DIFFERENCE_MINUEND_PLACES=1615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=904, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4884, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=93580, PETRI_PLACES=1653, PETRI_TRANSITIONS=5868} [2021-03-12 02:49:03,020 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1614 predicate places. [2021-03-12 02:49:03,020 INFO L480 AbstractCegarLoop]: Abstraction has has 1653 places, 5868 transitions, 93580 flow [2021-03-12 02:49:03,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:49:03,020 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:49:03,020 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:49:03,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-12 02:49:03,020 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:49:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:49:03,020 INFO L82 PathProgramCache]: Analyzing trace with hash 975650603, now seen corresponding path program 32 times [2021-03-12 02:49:03,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:49:03,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468927772] [2021-03-12 02:49:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:49:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:49:03,038 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:49:03,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:49:03,042 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:49:03,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:49:03,048 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:49:03,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:49:03,055 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:49:03,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:49:03,062 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:49:03,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:49:03,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:03,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:49:03,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:03,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:49:03,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:03,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:49:03,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:03,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:03,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:03,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:03,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:03,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:03,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:03,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:03,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:03,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:03,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:03,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:49:03,191 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-12 02:49:03,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 02:49:03,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:49:03,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:49:03,231 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:49:03,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:49:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:49:03,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468927772] [2021-03-12 02:49:03,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:49:03,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 02:49:03,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600210433] [2021-03-12 02:49:03,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 02:49:03,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:49:03,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 02:49:03,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-12 02:49:03,234 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:49:03,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1653 places, 5868 transitions, 93580 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:49:03,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:49:03,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:49:03,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:49:13,114 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-03-12 02:49:15,801 INFO L129 PetriNetUnfolder]: 7050/11871 cut-off events. [2021-03-12 02:49:15,801 INFO L130 PetriNetUnfolder]: For 1269388/1269432 co-relation queries the response was YES. [2021-03-12 02:49:16,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155620 conditions, 11871 events. 7050/11871 cut-off events. For 1269388/1269432 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 84487 event pairs, 414 based on Foata normal form. 13/11883 useless extension candidates. Maximal degree in co-relation 155046. Up to 10785 conditions per place. [2021-03-12 02:49:16,272 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 5282 selfloop transitions, 606 changer transitions 3/5899 dead transitions. [2021-03-12 02:49:16,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1681 places, 5899 transitions, 106599 flow [2021-03-12 02:49:16,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-12 02:49:16,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-03-12 02:49:16,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 922 transitions. [2021-03-12 02:49:16,274 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5127919911012235 [2021-03-12 02:49:16,274 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 922 transitions. [2021-03-12 02:49:16,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 922 transitions. [2021-03-12 02:49:16,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:49:16,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 922 transitions. [2021-03-12 02:49:16,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 29.741935483870968) internal successors, (922), 31 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:49:16,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 58.0) internal successors, (1856), 32 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:49:16,276 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 58.0) internal successors, (1856), 32 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:49:16,277 INFO L185 Difference]: Start difference. First operand has 1653 places, 5868 transitions, 93580 flow. Second operand 31 states and 922 transitions. [2021-03-12 02:49:16,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1681 places, 5899 transitions, 106599 flow [2021-03-12 02:49:42,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1668 places, 5899 transitions, 104605 flow, removed 508 selfloop flow, removed 13 redundant places. [2021-03-12 02:49:42,502 INFO L241 Difference]: Finished difference. Result has 1672 places, 5878 transitions, 93621 flow [2021-03-12 02:49:42,505 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=91586, PETRI_DIFFERENCE_MINUEND_PLACES=1638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=599, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=93621, PETRI_PLACES=1672, PETRI_TRANSITIONS=5878} [2021-03-12 02:49:42,505 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1633 predicate places. [2021-03-12 02:49:42,505 INFO L480 AbstractCegarLoop]: Abstraction has has 1672 places, 5878 transitions, 93621 flow [2021-03-12 02:49:42,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:49:42,505 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:49:42,505 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:49:42,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-12 02:49:42,505 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:49:42,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:49:42,505 INFO L82 PathProgramCache]: Analyzing trace with hash -688584243, now seen corresponding path program 33 times [2021-03-12 02:49:42,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:49:42,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686260809] [2021-03-12 02:49:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:49:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:49:42,523 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:49:42,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:49:42,528 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:49:42,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:49:42,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:42,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:42,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:42,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:42,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:42,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:42,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:42,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:42,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:42,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:42,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:42,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:42,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:42,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:42,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:42,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:49:42,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:42,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:42,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:42,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:42,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:42,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:49:42,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:42,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:49:42,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:49:42,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:49:42,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:49:42,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:49:42,705 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:49:42,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:49:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:49:42,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686260809] [2021-03-12 02:49:42,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:49:42,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-12 02:49:42,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024121622] [2021-03-12 02:49:42,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-12 02:49:42,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:49:42,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-12 02:49:42,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-12 02:49:42,709 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:49:42,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1672 places, 5878 transitions, 93621 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:49:42,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:49:42,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:49:42,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:49:56,609 INFO L129 PetriNetUnfolder]: 7315/12328 cut-off events. [2021-03-12 02:49:56,609 INFO L130 PetriNetUnfolder]: For 1390545/1390589 co-relation queries the response was YES. [2021-03-12 02:49:56,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165730 conditions, 12328 events. 7315/12328 cut-off events. For 1390545/1390589 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 88822 event pairs, 376 based on Foata normal form. 18/12345 useless extension candidates. Maximal degree in co-relation 165199. Up to 10594 conditions per place. [2021-03-12 02:49:57,028 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 4846 selfloop transitions, 1341 changer transitions 2/6197 dead transitions. [2021-03-12 02:49:57,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1717 places, 6197 transitions, 117228 flow [2021-03-12 02:49:57,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-12 02:49:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-03-12 02:49:57,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1514 transitions. [2021-03-12 02:49:57,030 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5327234342012667 [2021-03-12 02:49:57,030 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 1514 transitions. [2021-03-12 02:49:57,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 1514 transitions. [2021-03-12 02:49:57,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:49:57,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 1514 transitions. [2021-03-12 02:49:57,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 30.897959183673468) internal successors, (1514), 49 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:49:57,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 58.0) internal successors, (2900), 50 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:49:57,032 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 58.0) internal successors, (2900), 50 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:49:57,032 INFO L185 Difference]: Start difference. First operand has 1672 places, 5878 transitions, 93621 flow. Second operand 49 states and 1514 transitions. [2021-03-12 02:49:57,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1717 places, 6197 transitions, 117228 flow [2021-03-12 02:50:28,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1699 places, 6197 transitions, 115698 flow, removed 392 selfloop flow, removed 18 redundant places. [2021-03-12 02:50:28,713 INFO L241 Difference]: Finished difference. Result has 1717 places, 6133 transitions, 104065 flow [2021-03-12 02:50:28,715 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=92115, PETRI_DIFFERENCE_MINUEND_PLACES=1651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5878, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=104065, PETRI_PLACES=1717, PETRI_TRANSITIONS=6133} [2021-03-12 02:50:28,715 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1678 predicate places. [2021-03-12 02:50:28,715 INFO L480 AbstractCegarLoop]: Abstraction has has 1717 places, 6133 transitions, 104065 flow [2021-03-12 02:50:28,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:50:28,715 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:50:28,716 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:50:28,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-12 02:50:28,716 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:50:28,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:50:28,716 INFO L82 PathProgramCache]: Analyzing trace with hash 562932969, now seen corresponding path program 34 times [2021-03-12 02:50:28,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:50:28,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284008453] [2021-03-12 02:50:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:50:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:50:28,730 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:50:28,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:50:28,735 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:50:28,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:50:28,740 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:50:28,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:50:28,747 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 02:50:28,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 02:50:28,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:50:28,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:50:28,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:50:28,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:50:28,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:50:28,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:50:28,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:50:28,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:50:28,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:50:28,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:50:28,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:50:28,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:50:28,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:50:28,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:50:28,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:50:28,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:50:28,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:50:28,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:50:28,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:50:28,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:50:28,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:50:28,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:50:28,924 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-12 02:50:28,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:50:28,952 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:50:28,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:50:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:50:28,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284008453] [2021-03-12 02:50:28,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:50:28,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:50:28,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539815593] [2021-03-12 02:50:28,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:50:28,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:50:28,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:50:28,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:50:28,955 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:50:28,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1717 places, 6133 transitions, 104065 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:50:28,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:50:28,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:50:28,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:50:43,576 INFO L129 PetriNetUnfolder]: 7320/12362 cut-off events. [2021-03-12 02:50:43,577 INFO L130 PetriNetUnfolder]: For 1483525/1483569 co-relation queries the response was YES. [2021-03-12 02:50:43,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170208 conditions, 12362 events. 7320/12362 cut-off events. For 1483525/1483569 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 89133 event pairs, 425 based on Foata normal form. 13/12374 useless extension candidates. Maximal degree in co-relation 169659. Up to 11121 conditions per place. [2021-03-12 02:50:44,007 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 5410 selfloop transitions, 750 changer transitions 4/6172 dead transitions. [2021-03-12 02:50:44,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1753 places, 6172 transitions, 117962 flow [2021-03-12 02:50:44,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-12 02:50:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-03-12 02:50:44,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1151 transitions. [2021-03-12 02:50:44,012 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5088417329796641 [2021-03-12 02:50:44,012 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1151 transitions. [2021-03-12 02:50:44,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1151 transitions. [2021-03-12 02:50:44,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:50:44,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1151 transitions. [2021-03-12 02:50:44,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 29.512820512820515) internal successors, (1151), 39 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:50:44,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 58.0) internal successors, (2320), 40 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:50:44,014 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 58.0) internal successors, (2320), 40 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:50:44,014 INFO L185 Difference]: Start difference. First operand has 1717 places, 6133 transitions, 104065 flow. Second operand 39 states and 1151 transitions. [2021-03-12 02:50:44,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1753 places, 6172 transitions, 117962 flow [2021-03-12 02:51:20,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1744 places, 6172 transitions, 112218 flow, removed 2539 selfloop flow, removed 9 redundant places. [2021-03-12 02:51:20,703 INFO L241 Difference]: Finished difference. Result has 1746 places, 6152 transitions, 101055 flow [2021-03-12 02:51:20,705 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=98331, PETRI_DIFFERENCE_MINUEND_PLACES=1706, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=736, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=101055, PETRI_PLACES=1746, PETRI_TRANSITIONS=6152} [2021-03-12 02:51:20,706 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1707 predicate places. [2021-03-12 02:51:20,706 INFO L480 AbstractCegarLoop]: Abstraction has has 1746 places, 6152 transitions, 101055 flow [2021-03-12 02:51:20,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:51:20,706 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:51:20,706 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:51:20,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-12 02:51:20,706 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:51:20,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:51:20,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2123866731, now seen corresponding path program 35 times [2021-03-12 02:51:20,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:51:20,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103401996] [2021-03-12 02:51:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:51:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:51:20,716 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:51:20,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:51:20,720 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:51:20,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:51:20,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:51:20,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:51:20,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:51:20,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:51:20,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:51:20,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:51:20,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:51:20,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:51:20,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:51:20,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:51:20,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:51:20,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:51:20,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:51:20,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:51:20,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:51:20,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:51:20,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:51:20,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:51:20,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:51:20,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:51:20,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:51:20,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:51:20,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:51:20,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:51:20,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:51:20,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:51:20,907 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:51:20,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:51:20,928 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:51:20,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:51:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:51:20,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103401996] [2021-03-12 02:51:20,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:51:20,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 02:51:20,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172414136] [2021-03-12 02:51:20,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 02:51:20,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:51:20,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 02:51:20,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-12 02:51:20,931 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:51:20,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1746 places, 6152 transitions, 101055 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:51:20,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:51:20,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:51:20,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:51:35,247 INFO L129 PetriNetUnfolder]: 7379/12509 cut-off events. [2021-03-12 02:51:35,247 INFO L130 PetriNetUnfolder]: For 1442707/1442762 co-relation queries the response was YES. [2021-03-12 02:51:35,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169095 conditions, 12509 events. 7379/12509 cut-off events. For 1442707/1442762 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 91201 event pairs, 423 based on Foata normal form. 24/12532 useless extension candidates. Maximal degree in co-relation 168545. Up to 10914 conditions per place. [2021-03-12 02:51:35,791 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 5036 selfloop transitions, 1220 changer transitions 2/6266 dead transitions. [2021-03-12 02:51:35,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1781 places, 6266 transitions, 118180 flow [2021-03-12 02:51:35,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-12 02:51:35,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-03-12 02:51:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1149 transitions. [2021-03-12 02:51:35,792 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5213248638838476 [2021-03-12 02:51:35,792 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1149 transitions. [2021-03-12 02:51:35,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1149 transitions. [2021-03-12 02:51:35,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:51:35,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1149 transitions. [2021-03-12 02:51:35,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 30.236842105263158) internal successors, (1149), 38 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:51:35,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 58.0) internal successors, (2262), 39 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:51:35,794 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 58.0) internal successors, (2262), 39 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:51:35,795 INFO L185 Difference]: Start difference. First operand has 1746 places, 6152 transitions, 101055 flow. Second operand 38 states and 1149 transitions. [2021-03-12 02:51:35,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1781 places, 6266 transitions, 118180 flow [2021-03-12 02:52:11,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1755 places, 6266 transitions, 115878 flow, removed 626 selfloop flow, removed 26 redundant places. [2021-03-12 02:52:11,314 INFO L241 Difference]: Finished difference. Result has 1765 places, 6236 transitions, 104601 flow [2021-03-12 02:52:11,317 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=98769, PETRI_DIFFERENCE_MINUEND_PLACES=1718, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4989, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=104601, PETRI_PLACES=1765, PETRI_TRANSITIONS=6236} [2021-03-12 02:52:11,317 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1726 predicate places. [2021-03-12 02:52:11,317 INFO L480 AbstractCegarLoop]: Abstraction has has 1765 places, 6236 transitions, 104601 flow [2021-03-12 02:52:11,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:52:11,317 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:52:11,318 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:52:11,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-12 02:52:11,318 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:52:11,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:52:11,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1444030145, now seen corresponding path program 36 times [2021-03-12 02:52:11,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:52:11,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198589099] [2021-03-12 02:52:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:52:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:52:11,333 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:52:11,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:52:11,337 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:52:11,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:52:11,343 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:52:11,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:52:11,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:52:11,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:52:11,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:52:11,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:52:11,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:52:11,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:52:11,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:52:11,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:52:11,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:52:11,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:52:11,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:52:11,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:52:11,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:52:11,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:52:11,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:52:11,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:52:11,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:52:11,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:52:11,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:52:11,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:52:11,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:52:11,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:52:11,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:52:11,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:52:11,538 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:52:11,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:52:11,561 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:52:11,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:52:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:52:11,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198589099] [2021-03-12 02:52:11,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:52:11,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-12 02:52:11,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819714784] [2021-03-12 02:52:11,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-12 02:52:11,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:52:11,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-12 02:52:11,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-12 02:52:11,564 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:52:11,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1765 places, 6236 transitions, 104601 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:52:11,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:52:11,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:52:11,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:52:25,892 INFO L129 PetriNetUnfolder]: 7401/12585 cut-off events. [2021-03-12 02:52:25,892 INFO L130 PetriNetUnfolder]: For 1502142/1502197 co-relation queries the response was YES. [2021-03-12 02:52:26,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172573 conditions, 12585 events. 7401/12585 cut-off events. For 1502142/1502197 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 92230 event pairs, 430 based on Foata normal form. 19/12603 useless extension candidates. Maximal degree in co-relation 172014. Up to 10983 conditions per place. [2021-03-12 02:52:26,343 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 5239 selfloop transitions, 1066 changer transitions 3/6316 dead transitions. [2021-03-12 02:52:26,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1799 places, 6316 transitions, 121067 flow [2021-03-12 02:52:26,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-12 02:52:26,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-03-12 02:52:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1116 transitions. [2021-03-12 02:52:26,345 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5200372786579683 [2021-03-12 02:52:26,345 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1116 transitions. [2021-03-12 02:52:26,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1116 transitions. [2021-03-12 02:52:26,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:52:26,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1116 transitions. [2021-03-12 02:52:26,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 30.16216216216216) internal successors, (1116), 37 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:52:26,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 58.0) internal successors, (2204), 38 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:52:26,347 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 58.0) internal successors, (2204), 38 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:52:26,347 INFO L185 Difference]: Start difference. First operand has 1765 places, 6236 transitions, 104601 flow. Second operand 37 states and 1116 transitions. [2021-03-12 02:52:26,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1799 places, 6316 transitions, 121067 flow [2021-03-12 02:53:04,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1786 places, 6316 transitions, 117311 flow, removed 1206 selfloop flow, removed 13 redundant places. [2021-03-12 02:53:04,284 INFO L241 Difference]: Finished difference. Result has 1791 places, 6280 transitions, 105461 flow [2021-03-12 02:53:04,286 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=100847, PETRI_DIFFERENCE_MINUEND_PLACES=1750, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1028, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=105461, PETRI_PLACES=1791, PETRI_TRANSITIONS=6280} [2021-03-12 02:53:04,286 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1752 predicate places. [2021-03-12 02:53:04,286 INFO L480 AbstractCegarLoop]: Abstraction has has 1791 places, 6280 transitions, 105461 flow [2021-03-12 02:53:04,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:53:04,286 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:53:04,287 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:53:04,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-12 02:53:04,287 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:53:04,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:53:04,287 INFO L82 PathProgramCache]: Analyzing trace with hash -910712909, now seen corresponding path program 37 times [2021-03-12 02:53:04,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:53:04,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455902995] [2021-03-12 02:53:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:53:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:53:04,297 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:53:04,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:53:04,301 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:53:04,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:53:04,307 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:53:04,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:53:04,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:04,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:04,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:04,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:53:04,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:04,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:53:04,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:04,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:53:04,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:04,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:53:04,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:04,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:04,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:04,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:04,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:04,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:04,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:04,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:04,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:04,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:04,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:04,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:53:04,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:04,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:53:04,484 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:53:04,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:53:04,506 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:53:04,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:53:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:53:04,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455902995] [2021-03-12 02:53:04,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:53:04,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 02:53:04,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79073657] [2021-03-12 02:53:04,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 02:53:04,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:53:04,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 02:53:04,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-12 02:53:04,509 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:53:04,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1791 places, 6280 transitions, 105461 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:53:04,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:53:04,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:53:04,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:53:18,938 INFO L129 PetriNetUnfolder]: 7419/12649 cut-off events. [2021-03-12 02:53:18,938 INFO L130 PetriNetUnfolder]: For 1520988/1521032 co-relation queries the response was YES. [2021-03-12 02:53:19,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173438 conditions, 12649 events. 7419/12649 cut-off events. For 1520988/1521032 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 93146 event pairs, 453 based on Foata normal form. 13/12661 useless extension candidates. Maximal degree in co-relation 172874. Up to 11128 conditions per place. [2021-03-12 02:53:19,502 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 5324 selfloop transitions, 1014 changer transitions 3/6349 dead transitions. [2021-03-12 02:53:19,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1824 places, 6349 transitions, 121169 flow [2021-03-12 02:53:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-12 02:53:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-03-12 02:53:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1084 transitions. [2021-03-12 02:53:19,504 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5191570881226054 [2021-03-12 02:53:19,504 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1084 transitions. [2021-03-12 02:53:19,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1084 transitions. [2021-03-12 02:53:19,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:53:19,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1084 transitions. [2021-03-12 02:53:19,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 30.11111111111111) internal successors, (1084), 36 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:53:19,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 58.0) internal successors, (2146), 37 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:53:19,506 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 58.0) internal successors, (2146), 37 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:53:19,506 INFO L185 Difference]: Start difference. First operand has 1791 places, 6280 transitions, 105461 flow. Second operand 36 states and 1084 transitions. [2021-03-12 02:53:19,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1824 places, 6349 transitions, 121169 flow [2021-03-12 02:53:52,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1806 places, 6349 transitions, 118044 flow, removed 988 selfloop flow, removed 18 redundant places. [2021-03-12 02:53:52,270 INFO L241 Difference]: Finished difference. Result has 1813 places, 6318 transitions, 105923 flow [2021-03-12 02:53:52,272 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=102387, PETRI_DIFFERENCE_MINUEND_PLACES=1771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=981, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=105923, PETRI_PLACES=1813, PETRI_TRANSITIONS=6318} [2021-03-12 02:53:52,272 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1774 predicate places. [2021-03-12 02:53:52,272 INFO L480 AbstractCegarLoop]: Abstraction has has 1813 places, 6318 transitions, 105923 flow [2021-03-12 02:53:52,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:53:52,272 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:53:52,272 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:53:52,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-12 02:53:52,272 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:53:52,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:53:52,272 INFO L82 PathProgramCache]: Analyzing trace with hash -858971867, now seen corresponding path program 38 times [2021-03-12 02:53:52,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:53:52,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010035287] [2021-03-12 02:53:52,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:53:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:53:52,287 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:53:52,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:53:52,292 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:53:52,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:53:52,298 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:53:52,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:53:52,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:52,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:52,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:52,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:52,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:52,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:52,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:52,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:52,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:52,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:52,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:52,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:52,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:52,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:53:52,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:52,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:52,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:52,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:52,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:52,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:53:52,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:52,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:53:52,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:53:52,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:53:52,453 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:53:52,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:53:52,473 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:53:52,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:53:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:53:52,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010035287] [2021-03-12 02:53:52,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:53:52,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-12 02:53:52,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869266360] [2021-03-12 02:53:52,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-12 02:53:52,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:53:52,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-12 02:53:52,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-12 02:53:52,476 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:53:52,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1813 places, 6318 transitions, 105923 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:53:52,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:53:52,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:53:52,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:54:07,539 INFO L129 PetriNetUnfolder]: 7570/12926 cut-off events. [2021-03-12 02:54:07,540 INFO L130 PetriNetUnfolder]: For 1594880/1594924 co-relation queries the response was YES. [2021-03-12 02:54:08,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179896 conditions, 12926 events. 7570/12926 cut-off events. For 1594880/1594924 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 95764 event pairs, 412 based on Foata normal form. 13/12938 useless extension candidates. Maximal degree in co-relation 179325. Up to 11332 conditions per place. [2021-03-12 02:54:08,106 INFO L132 encePairwiseOnDemand]: 40/58 looper letters, 5533 selfloop transitions, 1001 changer transitions 5/6547 dead transitions. [2021-03-12 02:54:08,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1849 places, 6547 transitions, 127929 flow [2021-03-12 02:54:08,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-12 02:54:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-03-12 02:54:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1189 transitions. [2021-03-12 02:54:08,107 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5256410256410257 [2021-03-12 02:54:08,107 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1189 transitions. [2021-03-12 02:54:08,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1189 transitions. [2021-03-12 02:54:08,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:54:08,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1189 transitions. [2021-03-12 02:54:08,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.487179487179485) internal successors, (1189), 39 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:54:08,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 58.0) internal successors, (2320), 40 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:54:08,110 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 58.0) internal successors, (2320), 40 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:54:08,110 INFO L185 Difference]: Start difference. First operand has 1813 places, 6318 transitions, 105923 flow. Second operand 39 states and 1189 transitions. [2021-03-12 02:54:08,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1849 places, 6547 transitions, 127929 flow [2021-03-12 02:54:46,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1832 places, 6547 transitions, 125767 flow, removed 510 selfloop flow, removed 17 redundant places. [2021-03-12 02:54:47,036 INFO L241 Difference]: Finished difference. Result has 1843 places, 6489 transitions, 112647 flow [2021-03-12 02:54:47,038 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=103843, PETRI_DIFFERENCE_MINUEND_PLACES=1794, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=845, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=112647, PETRI_PLACES=1843, PETRI_TRANSITIONS=6489} [2021-03-12 02:54:47,038 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1804 predicate places. [2021-03-12 02:54:47,038 INFO L480 AbstractCegarLoop]: Abstraction has has 1843 places, 6489 transitions, 112647 flow [2021-03-12 02:54:47,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:54:47,039 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:54:47,039 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:54:47,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-12 02:54:47,039 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:54:47,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:54:47,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1679408183, now seen corresponding path program 39 times [2021-03-12 02:54:47,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:54:47,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978562113] [2021-03-12 02:54:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:54:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:54:47,054 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 02:54:47,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:54:47,058 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:54:47,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:54:47,065 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-12 02:54:47,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 02:54:47,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:54:47,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:54:47,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:54:47,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:54:47,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:54:47,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:54:47,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:54:47,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:54:47,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:54:47,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:54:47,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:54:47,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:54:47,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:54:47,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:54:47,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:54:47,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:54:47,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:54:47,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:54:47,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:54:47,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 02:54:47,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:54:47,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:54:47,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:54:47,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 02:54:47,250 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-12 02:54:47,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 02:54:47,271 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-12 02:54:47,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 02:54:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:54:47,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978562113] [2021-03-12 02:54:47,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:54:47,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-12 02:54:47,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498083974] [2021-03-12 02:54:47,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-12 02:54:47,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:54:47,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-12 02:54:47,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-12 02:54:47,274 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2021-03-12 02:54:47,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1843 places, 6489 transitions, 112647 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:54:47,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:54:47,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2021-03-12 02:54:47,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-03-12 02:54:53,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-12 02:54:53,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-12 02:54:53,422 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-12 02:54:53,424 WARN L224 ceAbstractionStarter]: Timeout [2021-03-12 02:54:53,425 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.03 02:54:53 BasicIcfg [2021-03-12 02:54:53,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-12 02:54:53,425 INFO L168 Benchmark]: Toolchain (without parser) took 838417.39 ms. Allocated memory was 352.3 MB in the beginning and 8.2 GB in the end (delta: 7.8 GB). Free memory was 332.1 MB in the beginning and 1.7 GB in the end (delta: -1.4 GB). Peak memory consumption was 6.8 GB. Max. memory is 16.0 GB. [2021-03-12 02:54:53,425 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 352.3 MB. Free memory is still 333.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 02:54:53,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.39 ms. Allocated memory is still 352.3 MB. Free memory was 331.6 MB in the beginning and 330.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 02:54:53,425 INFO L168 Benchmark]: Boogie Preprocessor took 14.36 ms. Allocated memory is still 352.3 MB. Free memory was 330.0 MB in the beginning and 329.1 MB in the end (delta: 958.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 02:54:53,425 INFO L168 Benchmark]: RCFGBuilder took 234.59 ms. Allocated memory is still 352.3 MB. Free memory was 329.1 MB in the beginning and 316.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-12 02:54:53,425 INFO L168 Benchmark]: TraceAbstraction took 838141.91 ms. Allocated memory was 352.3 MB in the beginning and 8.2 GB in the end (delta: 7.8 GB). Free memory was 316.2 MB in the beginning and 1.7 GB in the end (delta: -1.4 GB). Peak memory consumption was 6.7 GB. Max. memory is 16.0 GB. [2021-03-12 02:54:53,426 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 0.09 ms. Allocated memory is still 352.3 MB. Free memory is still 333.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.39 ms. Allocated memory is still 352.3 MB. Free memory was 331.6 MB in the beginning and 330.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.36 ms. Allocated memory is still 352.3 MB. Free memory was 330.0 MB in the beginning and 329.1 MB in the end (delta: 958.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 234.59 ms. Allocated memory is still 352.3 MB. Free memory was 329.1 MB in the beginning and 316.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 838141.91 ms. Allocated memory was 352.3 MB in the beginning and 8.2 GB in the end (delta: 7.8 GB). Free memory was 316.2 MB in the beginning and 1.7 GB in the end (delta: -1.4 GB). Peak memory consumption was 6.7 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 283.0ms, 52 PlacesBefore, 39 PlacesAfterwards, 39 TransitionsBefore, 26 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 1092 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 686, positive: 644, positive conditional: 0, positive unconditional: 644, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 546, positive: 514, positive conditional: 0, positive unconditional: 514, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 546, positive: 510, positive conditional: 0, positive unconditional: 510, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 89, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 686, positive: 130, positive conditional: 0, positive unconditional: 130, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 546, unknown conditional: 0, unknown unconditional: 546] , Statistics on independence cache: Total cache size (in pairs): 188, Positive cache size: 168, Positive conditional cache size: 0, Positive unconditional cache size: 168, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 79). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (17states, 26/58 universal loopers) in iteration 39,while PetriNetUnfolder was constructing finite prefix that currently has 79250 conditions, 4816 events (3064/4815 cut-off events. For 640396/640440 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 33475 event pairs, 86 based on Foata normal form. 12/5497 useless extension candidates. Maximal degree in co-relation 78708. Up to 4369 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 838063.9ms, OverallIterations: 39, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 829485.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 330.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1608 SDtfs, 3107 SDslu, 2239 SDs, 0 SdLazy, 58268 SolverSat, 1900 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19089.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1942 GetRequests, 16 SyntacticMatches, 48 SemanticMatches, 1878 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28223 ImplicationChecksByTransitivity, 34198.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=112647occurred in iteration=38, InterpolantAutomatonStates: 1680, 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: 24.7ms SsaConstructionTime, 139.2ms SatisfiabilityAnalysisTime, 7902.9ms InterpolantComputationTime, 1014 NumberOfCodeBlocks, 1014 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 975 ConstructedInterpolants, 0 QuantifiedInterpolants, 12627 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown