/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/parallel/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 01:40:10,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 01:40:10,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 01:40:10,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-11 01:40:10,701 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 [2021-06-11 01:40:10,725 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 01:40:10,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 01:40:10,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 01:40:10,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 01:40:10,726 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 01:40:10,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 01:40:10,726 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 01:40:10,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 01:40:10,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 01:40:10,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 01:40:10,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 01:40:10,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 01:40:10,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 01:40:10,727 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 01:40:10,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 01:40:10,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 01:40:10,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 01:40:10,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 01:40:10,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 01:40:10,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 01:40:10,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 01:40:10,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 01:40:10,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 01:40:10,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 01:40:10,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 01:40:10,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 01:40:10,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 01:40:10,728 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 01:40:10,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 01:40:10,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 01:40:10,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 01:40:10,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 01:40:10,950 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 01:40:10,953 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 01:40:10,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-06-11 01:40:10,953 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-06-11 01:40:11,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 01:40:11,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 01:40:11,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 01:40:11,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 01:40:11,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 01:40:11,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 01:40:11" (1/1) ... [2021-06-11 01:40:11,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 01:40:11" (1/1) ... [2021-06-11 01:40:11,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 01:40:11,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 01:40:11,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 01:40:11,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 01:40:11,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 01:40:11" (1/1) ... [2021-06-11 01:40:11,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 01:40:11" (1/1) ... [2021-06-11 01:40:11,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 01:40:11" (1/1) ... [2021-06-11 01:40:11,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 01:40:11" (1/1) ... [2021-06-11 01:40:11,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 01:40:11" (1/1) ... [2021-06-11 01:40:11,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 01:40:11" (1/1) ... [2021-06-11 01:40:11,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 01:40:11" (1/1) ... [2021-06-11 01:40:11,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 01:40:11,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 01:40:11,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 01:40:11,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 01:40:11,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 01:40:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 01:40:11,084 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-11 01:40:11,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-11 01:40:11,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-11 01:40:11,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-11 01:40:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-11 01:40:11,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-11 01:40:11,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 01:40:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 01:40:11,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 01:40:11,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-11 01:40:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-11 01:40:11,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-11 01:40:11,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-11 01:40:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-11 01:40:11,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-11 01:40:11,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-11 01:40:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-11 01:40:11,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-11 01:40:11,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-06-11 01:40:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-06-11 01:40:11,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-06-11 01:40:11,087 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 01:40:11,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 01:40:11,204 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 01:40:11,205 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 01:40:11 BoogieIcfgContainer [2021-06-11 01:40:11,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 01:40:11,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 01:40:11,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 01:40:11,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 01:40:11,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 01:40:11" (1/2) ... [2021-06-11 01:40:11,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a36d303 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 01:40:11, skipping insertion in model container [2021-06-11 01:40:11,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 01:40:11" (2/2) ... [2021-06-11 01:40:11,210 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-06-11 01:40:11,213 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 01:40:11,215 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 01:40:11,216 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 01:40:11,304 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-06-11 01:40:11,316 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-06-11 01:40:11,330 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 01:40:11,330 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 01:40:11,330 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 01:40:11,330 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 01:40:11,330 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 01:40:11,331 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 01:40:11,331 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 01:40:11,331 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 01:40:11,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 65 transitions, 202 flow [2021-06-11 01:40:11,374 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-06-11 01:40:11,374 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-11 01:40:11,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 53 events. 4/53 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-06-11 01:40:11,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 65 transitions, 202 flow [2021-06-11 01:40:11,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 51 transitions, 150 flow [2021-06-11 01:40:11,391 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 01:40:11,400 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 51 transitions, 150 flow [2021-06-11 01:40:11,403 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 51 transitions, 150 flow [2021-06-11 01:40:11,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 51 transitions, 150 flow [2021-06-11 01:40:11,418 INFO L129 PetriNetUnfolder]: 4/51 cut-off events. [2021-06-11 01:40:11,418 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-11 01:40:11,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 51 events. 4/51 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-06-11 01:40:11,421 INFO L151 LiptonReduction]: Number of co-enabled transitions 1336 [2021-06-11 01:40:11,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:11,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:11,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:11,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:11,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:11,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:11,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:11,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:11,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:11,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:11,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:11,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:11,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:11,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:11,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:11,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:11,802 INFO L163 LiptonReduction]: Checked pairs total: 1358 [2021-06-11 01:40:11,803 INFO L165 LiptonReduction]: Total number of compositions: 13 [2021-06-11 01:40:11,805 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 415 [2021-06-11 01:40:11,829 INFO L129 PetriNetUnfolder]: 4/37 cut-off events. [2021-06-11 01:40:11,829 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-11 01:40:11,829 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:11,830 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:11,830 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:11,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1729675932, now seen corresponding path program 1 times [2021-06-11 01:40:11,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:11,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202701940] [2021-06-11 01:40:11,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:11,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:11,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:11,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:11,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-11 01:40:11,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:11,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:11,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202701940] [2021-06-11 01:40:11,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:11,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 01:40:11,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906629801] [2021-06-11 01:40:11,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 01:40:11,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:11,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 01:40:11,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 01:40:11,957 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2021-06-11 01:40:11,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:11,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:11,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2021-06-11 01:40:11,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:11,997 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-06-11 01:40:11,997 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-06-11 01:40:11,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 43 events. 6/43 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 1 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2021-06-11 01:40:11,999 INFO L132 encePairwiseOnDemand]: 79/82 looper letters, 2 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2021-06-11 01:40:11,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 38 transitions, 132 flow [2021-06-11 01:40:12,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 01:40:12,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 01:40:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-06-11 01:40:12,008 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9227642276422764 [2021-06-11 01:40:12,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-06-11 01:40:12,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-06-11 01:40:12,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:12,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-06-11 01:40:12,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:12,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:12,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:12,022 INFO L185 Difference]: Start difference. First operand has 53 places, 38 transitions, 124 flow. Second operand 3 states and 227 transitions. [2021-06-11 01:40:12,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 38 transitions, 132 flow [2021-06-11 01:40:12,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 97 flow, removed 0 selfloop flow, removed 13 redundant places. [2021-06-11 01:40:12,028 INFO L241 Difference]: Finished difference. Result has 43 places, 38 transitions, 97 flow [2021-06-11 01:40:12,030 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2021-06-11 01:40:12,030 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2021-06-11 01:40:12,031 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 97 flow [2021-06-11 01:40:12,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:12,031 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:12,031 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:12,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 01:40:12,032 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:12,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:12,033 INFO L82 PathProgramCache]: Analyzing trace with hash 2133907847, now seen corresponding path program 1 times [2021-06-11 01:40:12,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:12,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918973229] [2021-06-11 01:40:12,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:12,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:12,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-11 01:40:12,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:12,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918973229] [2021-06-11 01:40:12,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:12,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 01:40:12,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323300371] [2021-06-11 01:40:12,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 01:40:12,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:12,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 01:40:12,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 01:40:12,073 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2021-06-11 01:40:12,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:12,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:12,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2021-06-11 01:40:12,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:12,086 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-06-11 01:40:12,086 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-11 01:40:12,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 43 events. 6/43 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 1 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2021-06-11 01:40:12,088 INFO L132 encePairwiseOnDemand]: 79/82 looper letters, 2 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2021-06-11 01:40:12,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 105 flow [2021-06-11 01:40:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 01:40:12,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 01:40:12,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-06-11 01:40:12,092 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9227642276422764 [2021-06-11 01:40:12,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-06-11 01:40:12,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-06-11 01:40:12,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:12,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-06-11 01:40:12,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:12,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:12,096 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:12,096 INFO L185 Difference]: Start difference. First operand has 43 places, 38 transitions, 97 flow. Second operand 3 states and 227 transitions. [2021-06-11 01:40:12,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 105 flow [2021-06-11 01:40:12,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 101 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 01:40:12,097 INFO L241 Difference]: Finished difference. Result has 44 places, 38 transitions, 101 flow [2021-06-11 01:40:12,097 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2021-06-11 01:40:12,098 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2021-06-11 01:40:12,098 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 101 flow [2021-06-11 01:40:12,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:12,098 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:12,098 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:12,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 01:40:12,099 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:12,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:12,099 INFO L82 PathProgramCache]: Analyzing trace with hash -795821729, now seen corresponding path program 1 times [2021-06-11 01:40:12,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:12,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058264260] [2021-06-11 01:40:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:12,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:40:12,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:12,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:12,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:12,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:12,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:12,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:12,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:12,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:12,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:12,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:12,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:12,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:12,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:12,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:12,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:12,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:12,413 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:40:12,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:40:12,436 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:40:12,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:12,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058264260] [2021-06-11 01:40:12,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:12,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 01:40:12,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879660107] [2021-06-11 01:40:12,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-11 01:40:12,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:12,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-11 01:40:12,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-11 01:40:12,444 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:40:12,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 101 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:12,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:12,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:40:12,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:14,134 INFO L129 PetriNetUnfolder]: 1326/2128 cut-off events. [2021-06-11 01:40:14,134 INFO L130 PetriNetUnfolder]: For 329/329 co-relation queries the response was YES. [2021-06-11 01:40:14,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 2128 events. 1326/2128 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10419 event pairs, 586 based on Foata normal form. 1/1993 useless extension candidates. Maximal degree in co-relation 4391. Up to 1515 conditions per place. [2021-06-11 01:40:14,146 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 77 selfloop transitions, 127 changer transitions 0/222 dead transitions. [2021-06-11 01:40:14,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 222 transitions, 1018 flow [2021-06-11 01:40:14,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-11 01:40:14,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-06-11 01:40:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2077 transitions. [2021-06-11 01:40:14,151 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6494684177611006 [2021-06-11 01:40:14,151 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2077 transitions. [2021-06-11 01:40:14,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2077 transitions. [2021-06-11 01:40:14,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:14,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2077 transitions. [2021-06-11 01:40:14,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.256410256410255) internal successors, (2077), 39 states have internal predecessors, (2077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 82.0) internal successors, (3280), 40 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,160 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 82.0) internal successors, (3280), 40 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,160 INFO L185 Difference]: Start difference. First operand has 44 places, 38 transitions, 101 flow. Second operand 39 states and 2077 transitions. [2021-06-11 01:40:14,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 222 transitions, 1018 flow [2021-06-11 01:40:14,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 222 transitions, 942 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 01:40:14,165 INFO L241 Difference]: Finished difference. Result has 100 places, 166 transitions, 826 flow [2021-06-11 01:40:14,165 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=826, PETRI_PLACES=100, PETRI_TRANSITIONS=166} [2021-06-11 01:40:14,165 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2021-06-11 01:40:14,165 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 166 transitions, 826 flow [2021-06-11 01:40:14,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,166 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:14,166 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:14,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 01:40:14,166 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:14,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:14,166 INFO L82 PathProgramCache]: Analyzing trace with hash 318124037, now seen corresponding path program 2 times [2021-06-11 01:40:14,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:14,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175912864] [2021-06-11 01:40:14,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:14,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:14,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-11 01:40:14,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:14,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175912864] [2021-06-11 01:40:14,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:14,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 01:40:14,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269780956] [2021-06-11 01:40:14,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 01:40:14,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:14,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 01:40:14,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 01:40:14,182 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2021-06-11 01:40:14,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 166 transitions, 826 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:14,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2021-06-11 01:40:14,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:14,234 INFO L129 PetriNetUnfolder]: 480/986 cut-off events. [2021-06-11 01:40:14,235 INFO L130 PetriNetUnfolder]: For 911/916 co-relation queries the response was YES. [2021-06-11 01:40:14,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2440 conditions, 986 events. 480/986 cut-off events. For 911/916 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5444 event pairs, 198 based on Foata normal form. 27/857 useless extension candidates. Maximal degree in co-relation 2404. Up to 557 conditions per place. [2021-06-11 01:40:14,241 INFO L132 encePairwiseOnDemand]: 79/82 looper letters, 7 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2021-06-11 01:40:14,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 145 transitions, 805 flow [2021-06-11 01:40:14,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 01:40:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 01:40:14,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-06-11 01:40:14,243 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9227642276422764 [2021-06-11 01:40:14,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-06-11 01:40:14,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-06-11 01:40:14,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:14,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-06-11 01:40:14,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,244 INFO L185 Difference]: Start difference. First operand has 100 places, 166 transitions, 826 flow. Second operand 3 states and 227 transitions. [2021-06-11 01:40:14,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 145 transitions, 805 flow [2021-06-11 01:40:14,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 145 transitions, 790 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-06-11 01:40:14,253 INFO L241 Difference]: Finished difference. Result has 98 places, 145 transitions, 809 flow [2021-06-11 01:40:14,253 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=809, PETRI_PLACES=98, PETRI_TRANSITIONS=145} [2021-06-11 01:40:14,253 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2021-06-11 01:40:14,253 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 145 transitions, 809 flow [2021-06-11 01:40:14,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,253 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:14,253 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:14,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 01:40:14,253 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:14,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:14,254 INFO L82 PathProgramCache]: Analyzing trace with hash 414070021, now seen corresponding path program 3 times [2021-06-11 01:40:14,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:14,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539618602] [2021-06-11 01:40:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:14,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:14,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-11 01:40:14,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 01:40:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:14,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539618602] [2021-06-11 01:40:14,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:14,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 01:40:14,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778235579] [2021-06-11 01:40:14,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 01:40:14,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:14,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 01:40:14,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 01:40:14,269 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2021-06-11 01:40:14,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 145 transitions, 809 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:14,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2021-06-11 01:40:14,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:14,314 INFO L129 PetriNetUnfolder]: 419/859 cut-off events. [2021-06-11 01:40:14,315 INFO L130 PetriNetUnfolder]: For 1014/1028 co-relation queries the response was YES. [2021-06-11 01:40:14,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 859 events. 419/859 cut-off events. For 1014/1028 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4525 event pairs, 160 based on Foata normal form. 11/724 useless extension candidates. Maximal degree in co-relation 2129. Up to 452 conditions per place. [2021-06-11 01:40:14,321 INFO L132 encePairwiseOnDemand]: 79/82 looper letters, 12 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2021-06-11 01:40:14,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 145 transitions, 841 flow [2021-06-11 01:40:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 01:40:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 01:40:14,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-06-11 01:40:14,322 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9227642276422764 [2021-06-11 01:40:14,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-06-11 01:40:14,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-06-11 01:40:14,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:14,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-06-11 01:40:14,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,323 INFO L185 Difference]: Start difference. First operand has 98 places, 145 transitions, 809 flow. Second operand 3 states and 227 transitions. [2021-06-11 01:40:14,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 145 transitions, 841 flow [2021-06-11 01:40:14,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 145 transitions, 783 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 01:40:14,329 INFO L241 Difference]: Finished difference. Result has 99 places, 145 transitions, 765 flow [2021-06-11 01:40:14,329 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=765, PETRI_PLACES=99, PETRI_TRANSITIONS=145} [2021-06-11 01:40:14,329 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2021-06-11 01:40:14,329 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 145 transitions, 765 flow [2021-06-11 01:40:14,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,330 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:14,330 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:14,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 01:40:14,330 INFO L428 AbstractCegarLoop]: === Iteration 6 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:14,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:14,330 INFO L82 PathProgramCache]: Analyzing trace with hash -2115111695, now seen corresponding path program 4 times [2021-06-11 01:40:14,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:14,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247804434] [2021-06-11 01:40:14,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:14,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:40:14,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:14,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:14,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:14,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:14,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:14,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:14,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:14,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:14,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 01:40:14,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 01:40:14,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 01:40:14,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:14,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:14,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:14,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:14,559 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-11 01:40:14,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 01:40:14,578 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 01:40:14,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:40:14,599 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:40:14,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:14,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247804434] [2021-06-11 01:40:14,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:14,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:40:14,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606506657] [2021-06-11 01:40:14,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:40:14,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:14,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:40:14,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:40:14,604 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:40:14,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 145 transitions, 765 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:14,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:14,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:40:14,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:16,704 INFO L129 PetriNetUnfolder]: 1292/2118 cut-off events. [2021-06-11 01:40:16,705 INFO L130 PetriNetUnfolder]: For 6373/6375 co-relation queries the response was YES. [2021-06-11 01:40:16,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8184 conditions, 2118 events. 1292/2118 cut-off events. For 6373/6375 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10354 event pairs, 248 based on Foata normal form. 3/1981 useless extension candidates. Maximal degree in co-relation 8137. Up to 1248 conditions per place. [2021-06-11 01:40:16,720 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 182 selfloop transitions, 212 changer transitions 1/413 dead transitions. [2021-06-11 01:40:16,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 413 transitions, 3245 flow [2021-06-11 01:40:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-11 01:40:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-06-11 01:40:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2791 transitions. [2021-06-11 01:40:16,727 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6545497185741088 [2021-06-11 01:40:16,727 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 2791 transitions. [2021-06-11 01:40:16,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 2791 transitions. [2021-06-11 01:40:16,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:16,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 2791 transitions. [2021-06-11 01:40:16,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 53.67307692307692) internal successors, (2791), 52 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:16,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 82.0) internal successors, (4346), 53 states have internal predecessors, (4346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:16,737 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 82.0) internal successors, (4346), 53 states have internal predecessors, (4346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:16,737 INFO L185 Difference]: Start difference. First operand has 99 places, 145 transitions, 765 flow. Second operand 52 states and 2791 transitions. [2021-06-11 01:40:16,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 413 transitions, 3245 flow [2021-06-11 01:40:16,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 413 transitions, 3187 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 01:40:16,751 INFO L241 Difference]: Finished difference. Result has 177 places, 329 transitions, 2519 flow [2021-06-11 01:40:16,751 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2519, PETRI_PLACES=177, PETRI_TRANSITIONS=329} [2021-06-11 01:40:16,751 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 124 predicate places. [2021-06-11 01:40:16,751 INFO L480 AbstractCegarLoop]: Abstraction has has 177 places, 329 transitions, 2519 flow [2021-06-11 01:40:16,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:16,752 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:16,752 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:16,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 01:40:16,752 INFO L428 AbstractCegarLoop]: === Iteration 7 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:16,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:16,752 INFO L82 PathProgramCache]: Analyzing trace with hash 347114567, now seen corresponding path program 5 times [2021-06-11 01:40:16,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:16,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77082444] [2021-06-11 01:40:16,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:16,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:16,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:40:16,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:16,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:16,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:16,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:16,810 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:40:16,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:16,817 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-06-11 01:40:16,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:16,824 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-06-11 01:40:16,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:16,834 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-06-11 01:40:16,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:16,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:16,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:16,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:16,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:16,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:16,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:16,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:16,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:16,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:16,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:16,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:16,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:16,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:16,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:16,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:16,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:16,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:16,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:17,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:40:17,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:40:17,038 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:40:17,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:17,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77082444] [2021-06-11 01:40:17,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:17,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-11 01:40:17,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858955124] [2021-06-11 01:40:17,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-11 01:40:17,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:17,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-11 01:40:17,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-11 01:40:17,042 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:40:17,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 329 transitions, 2519 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:17,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:17,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:40:17,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:20,734 INFO L129 PetriNetUnfolder]: 1834/3052 cut-off events. [2021-06-11 01:40:20,735 INFO L130 PetriNetUnfolder]: For 27960/27962 co-relation queries the response was YES. [2021-06-11 01:40:20,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17252 conditions, 3052 events. 1834/3052 cut-off events. For 27960/27962 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 16205 event pairs, 353 based on Foata normal form. 5/2845 useless extension candidates. Maximal degree in co-relation 17168. Up to 1911 conditions per place. [2021-06-11 01:40:20,768 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 378 selfloop transitions, 382 changer transitions 0/778 dead transitions. [2021-06-11 01:40:20,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 778 transitions, 9035 flow [2021-06-11 01:40:20,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-06-11 01:40:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-06-11 01:40:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 4577 transitions. [2021-06-11 01:40:20,775 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6415755536865714 [2021-06-11 01:40:20,775 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 4577 transitions. [2021-06-11 01:40:20,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 4577 transitions. [2021-06-11 01:40:20,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:20,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 4577 transitions. [2021-06-11 01:40:20,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 52.60919540229885) internal successors, (4577), 87 states have internal predecessors, (4577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:20,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 82.0) internal successors, (7216), 88 states have internal predecessors, (7216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:20,788 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 82.0) internal successors, (7216), 88 states have internal predecessors, (7216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:20,788 INFO L185 Difference]: Start difference. First operand has 177 places, 329 transitions, 2519 flow. Second operand 87 states and 4577 transitions. [2021-06-11 01:40:20,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 778 transitions, 9035 flow [2021-06-11 01:40:20,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 778 transitions, 7978 flow, removed 463 selfloop flow, removed 4 redundant places. [2021-06-11 01:40:20,892 INFO L241 Difference]: Finished difference. Result has 282 places, 732 transitions, 7220 flow [2021-06-11 01:40:20,892 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2128, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=7220, PETRI_PLACES=282, PETRI_TRANSITIONS=732} [2021-06-11 01:40:20,892 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 229 predicate places. [2021-06-11 01:40:20,892 INFO L480 AbstractCegarLoop]: Abstraction has has 282 places, 732 transitions, 7220 flow [2021-06-11 01:40:20,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:20,893 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:20,893 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:20,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-11 01:40:20,893 INFO L428 AbstractCegarLoop]: === Iteration 8 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:20,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:20,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1620631605, now seen corresponding path program 6 times [2021-06-11 01:40:20,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:20,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227699237] [2021-06-11 01:40:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:20,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:20,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:40:20,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:20,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:20,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:20,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:20,934 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:40:20,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:20,940 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-06-11 01:40:20,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:20,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:20,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:20,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:20,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:20,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:20,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:20,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:20,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:20,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:20,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:21,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:21,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:21,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:21,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:21,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:21,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:21,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:21,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:21,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:21,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:21,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:21,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:21,113 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:40:21,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:40:21,135 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:40:21,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:21,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227699237] [2021-06-11 01:40:21,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:21,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-11 01:40:21,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061851541] [2021-06-11 01:40:21,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-11 01:40:21,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:21,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-11 01:40:21,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-11 01:40:21,138 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:40:21,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 732 transitions, 7220 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:21,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:21,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:40:21,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:25,622 INFO L129 PetriNetUnfolder]: 2593/4333 cut-off events. [2021-06-11 01:40:25,622 INFO L130 PetriNetUnfolder]: For 65818/65871 co-relation queries the response was YES. [2021-06-11 01:40:25,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27593 conditions, 4333 events. 2593/4333 cut-off events. For 65818/65871 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 24493 event pairs, 323 based on Foata normal form. 26/4032 useless extension candidates. Maximal degree in co-relation 27434. Up to 2768 conditions per place. [2021-06-11 01:40:25,680 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 732 selfloop transitions, 542 changer transitions 5/1297 dead transitions. [2021-06-11 01:40:25,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 1297 transitions, 17100 flow [2021-06-11 01:40:25,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-06-11 01:40:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-06-11 01:40:25,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 5269 transitions. [2021-06-11 01:40:25,686 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6490514905149052 [2021-06-11 01:40:25,686 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 5269 transitions. [2021-06-11 01:40:25,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 5269 transitions. [2021-06-11 01:40:25,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:25,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 5269 transitions. [2021-06-11 01:40:25,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 53.22222222222222) internal successors, (5269), 99 states have internal predecessors, (5269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:25,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 82.0) internal successors, (8200), 100 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:25,701 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 82.0) internal successors, (8200), 100 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:25,701 INFO L185 Difference]: Start difference. First operand has 282 places, 732 transitions, 7220 flow. Second operand 99 states and 5269 transitions. [2021-06-11 01:40:25,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 1297 transitions, 17100 flow [2021-06-11 01:40:25,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 1297 transitions, 14857 flow, removed 1120 selfloop flow, removed 1 redundant places. [2021-06-11 01:40:25,962 INFO L241 Difference]: Finished difference. Result has 397 places, 1256 transitions, 13495 flow [2021-06-11 01:40:25,962 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=5015, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=13495, PETRI_PLACES=397, PETRI_TRANSITIONS=1256} [2021-06-11 01:40:25,962 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 344 predicate places. [2021-06-11 01:40:25,962 INFO L480 AbstractCegarLoop]: Abstraction has has 397 places, 1256 transitions, 13495 flow [2021-06-11 01:40:25,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:25,963 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:25,963 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:25,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-11 01:40:25,963 INFO L428 AbstractCegarLoop]: === Iteration 9 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:25,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:25,963 INFO L82 PathProgramCache]: Analyzing trace with hash -25157131, now seen corresponding path program 7 times [2021-06-11 01:40:25,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:25,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21012708] [2021-06-11 01:40:25,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:25,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:25,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:40:25,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:25,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:25,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:25,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:26,001 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:40:26,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:26,008 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-06-11 01:40:26,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:26,015 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-06-11 01:40:26,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:26,022 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-06-11 01:40:26,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:26,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:26,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:26,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:26,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:26,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:26,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:26,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:26,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:26,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:26,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:26,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:26,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:26,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:26,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:26,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:26,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:26,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:26,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:26,175 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:40:26,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:40:26,196 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:40:26,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:26,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:26,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21012708] [2021-06-11 01:40:26,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:26,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-11 01:40:26,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965380922] [2021-06-11 01:40:26,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-11 01:40:26,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:26,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-11 01:40:26,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-11 01:40:26,199 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:40:26,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 1256 transitions, 13495 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:26,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:26,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:40:26,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:30,404 INFO L129 PetriNetUnfolder]: 3104/5238 cut-off events. [2021-06-11 01:40:30,404 INFO L130 PetriNetUnfolder]: For 85640/85675 co-relation queries the response was YES. [2021-06-11 01:40:30,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34624 conditions, 5238 events. 3104/5238 cut-off events. For 85640/85675 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 31083 event pairs, 287 based on Foata normal form. 16/4828 useless extension candidates. Maximal degree in co-relation 34383. Up to 3532 conditions per place. [2021-06-11 01:40:30,466 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 1172 selfloop transitions, 537 changer transitions 0/1727 dead transitions. [2021-06-11 01:40:30,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 1727 transitions, 23785 flow [2021-06-11 01:40:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-11 01:40:30,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-06-11 01:40:30,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 4450 transitions. [2021-06-11 01:40:30,470 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6460511033681765 [2021-06-11 01:40:30,470 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 4450 transitions. [2021-06-11 01:40:30,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 4450 transitions. [2021-06-11 01:40:30,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:30,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 4450 transitions. [2021-06-11 01:40:30,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 52.976190476190474) internal successors, (4450), 84 states have internal predecessors, (4450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:30,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 82.0) internal successors, (6970), 85 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:30,482 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 82.0) internal successors, (6970), 85 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:30,482 INFO L185 Difference]: Start difference. First operand has 397 places, 1256 transitions, 13495 flow. Second operand 84 states and 4450 transitions. [2021-06-11 01:40:30,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 1727 transitions, 23785 flow [2021-06-11 01:40:30,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 1727 transitions, 19081 flow, removed 2349 selfloop flow, removed 1 redundant places. [2021-06-11 01:40:30,964 INFO L241 Difference]: Finished difference. Result has 493 places, 1699 transitions, 17040 flow [2021-06-11 01:40:30,965 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=8839, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1066, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=17040, PETRI_PLACES=493, PETRI_TRANSITIONS=1699} [2021-06-11 01:40:30,965 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 440 predicate places. [2021-06-11 01:40:30,965 INFO L480 AbstractCegarLoop]: Abstraction has has 493 places, 1699 transitions, 17040 flow [2021-06-11 01:40:30,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:30,966 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:30,966 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:30,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-11 01:40:30,966 INFO L428 AbstractCegarLoop]: === Iteration 10 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:30,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:30,967 INFO L82 PathProgramCache]: Analyzing trace with hash 736257217, now seen corresponding path program 8 times [2021-06-11 01:40:30,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:30,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339110593] [2021-06-11 01:40:30,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:30,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:30,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:40:30,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:30,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:30,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:30,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:31,002 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:40:31,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:31,009 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-06-11 01:40:31,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:31,016 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-06-11 01:40:31,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-11 01:40:31,027 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-06-11 01:40:31,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-11 01:40:31,039 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-11 01:40:31,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-11 01:40:31,052 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-11 01:40:31,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-11 01:40:31,065 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-11 01:40:31,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-11 01:40:31,084 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-11 01:40:31,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-11 01:40:31,159 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-11 01:40:31,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-11 01:40:31,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:31,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:31,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:31,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:31,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:31,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:31,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:31,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:31,264 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:40:31,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:40:31,286 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:40:31,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:31,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339110593] [2021-06-11 01:40:31,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:31,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-11 01:40:31,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841440508] [2021-06-11 01:40:31,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-11 01:40:31,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:31,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-11 01:40:31,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-06-11 01:40:31,292 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:40:31,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1699 transitions, 17040 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:31,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:31,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:40:31,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:34,093 INFO L129 PetriNetUnfolder]: 3479/5837 cut-off events. [2021-06-11 01:40:34,093 INFO L130 PetriNetUnfolder]: For 89728/89766 co-relation queries the response was YES. [2021-06-11 01:40:34,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38216 conditions, 5837 events. 3479/5837 cut-off events. For 89728/89766 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35132 event pairs, 376 based on Foata normal form. 18/5403 useless extension candidates. Maximal degree in co-relation 37926. Up to 4181 conditions per place. [2021-06-11 01:40:34,174 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 1588 selfloop transitions, 437 changer transitions 0/2043 dead transitions. [2021-06-11 01:40:34,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 2043 transitions, 26907 flow [2021-06-11 01:40:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-11 01:40:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-06-11 01:40:34,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2208 transitions. [2021-06-11 01:40:34,177 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6567519333729923 [2021-06-11 01:40:34,177 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2208 transitions. [2021-06-11 01:40:34,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2208 transitions. [2021-06-11 01:40:34,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:34,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2208 transitions. [2021-06-11 01:40:34,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 53.853658536585364) internal successors, (2208), 41 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:34,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 82.0) internal successors, (3444), 42 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:34,183 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 82.0) internal successors, (3444), 42 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:34,183 INFO L185 Difference]: Start difference. First operand has 493 places, 1699 transitions, 17040 flow. Second operand 41 states and 2208 transitions. [2021-06-11 01:40:34,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 2043 transitions, 26907 flow [2021-06-11 01:40:34,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 2043 transitions, 22018 flow, removed 2443 selfloop flow, removed 1 redundant places. [2021-06-11 01:40:34,884 INFO L241 Difference]: Finished difference. Result has 550 places, 1958 transitions, 18373 flow [2021-06-11 01:40:34,886 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=12679, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=18373, PETRI_PLACES=550, PETRI_TRANSITIONS=1958} [2021-06-11 01:40:34,886 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 497 predicate places. [2021-06-11 01:40:34,886 INFO L480 AbstractCegarLoop]: Abstraction has has 550 places, 1958 transitions, 18373 flow [2021-06-11 01:40:34,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:34,886 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:34,886 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:34,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-11 01:40:34,886 INFO L428 AbstractCegarLoop]: === Iteration 11 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:34,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:34,887 INFO L82 PathProgramCache]: Analyzing trace with hash -814640639, now seen corresponding path program 9 times [2021-06-11 01:40:34,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:34,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4594239] [2021-06-11 01:40:34,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:34,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:34,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:40:34,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:34,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:34,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:34,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:34,920 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:40:34,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:34,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:34,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:34,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:34,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:34,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:34,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:34,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:34,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:34,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:34,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:34,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:34,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:34,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:35,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:35,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:35,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:35,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:35,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:35,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:35,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:35,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:35,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:35,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:35,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:35,085 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:40:35,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:40:35,105 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:40:35,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:35,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4594239] [2021-06-11 01:40:35,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:35,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:40:35,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183263211] [2021-06-11 01:40:35,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:40:35,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:35,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:40:35,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:40:35,109 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:40:35,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 1958 transitions, 18373 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:35,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:35,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:40:35,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:38,526 INFO L129 PetriNetUnfolder]: 3807/6389 cut-off events. [2021-06-11 01:40:38,527 INFO L130 PetriNetUnfolder]: For 108712/108751 co-relation queries the response was YES. [2021-06-11 01:40:38,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42832 conditions, 6389 events. 3807/6389 cut-off events. For 108712/108751 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 39444 event pairs, 259 based on Foata normal form. 24/5939 useless extension candidates. Maximal degree in co-relation 42484. Up to 4607 conditions per place. [2021-06-11 01:40:38,628 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 1756 selfloop transitions, 493 changer transitions 0/2267 dead transitions. [2021-06-11 01:40:38,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 2267 transitions, 28200 flow [2021-06-11 01:40:38,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-11 01:40:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-06-11 01:40:38,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 3206 transitions. [2021-06-11 01:40:38,631 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6409436225509796 [2021-06-11 01:40:38,631 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 3206 transitions. [2021-06-11 01:40:38,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 3206 transitions. [2021-06-11 01:40:38,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:38,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 3206 transitions. [2021-06-11 01:40:38,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 52.557377049180324) internal successors, (3206), 61 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:38,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 82.0) internal successors, (5084), 62 states have internal predecessors, (5084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:38,639 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 82.0) internal successors, (5084), 62 states have internal predecessors, (5084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:38,639 INFO L185 Difference]: Start difference. First operand has 550 places, 1958 transitions, 18373 flow. Second operand 61 states and 3206 transitions. [2021-06-11 01:40:38,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 2267 transitions, 28200 flow [2021-06-11 01:40:39,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 2267 transitions, 26351 flow, removed 923 selfloop flow, removed 1 redundant places. [2021-06-11 01:40:39,554 INFO L241 Difference]: Finished difference. Result has 626 places, 2215 transitions, 22578 flow [2021-06-11 01:40:39,555 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=16556, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1958, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=22578, PETRI_PLACES=626, PETRI_TRANSITIONS=2215} [2021-06-11 01:40:39,555 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 573 predicate places. [2021-06-11 01:40:39,555 INFO L480 AbstractCegarLoop]: Abstraction has has 626 places, 2215 transitions, 22578 flow [2021-06-11 01:40:39,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:39,555 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:39,555 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:39,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-11 01:40:39,556 INFO L428 AbstractCegarLoop]: === Iteration 12 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:39,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:39,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1865859479, now seen corresponding path program 10 times [2021-06-11 01:40:39,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:39,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611957820] [2021-06-11 01:40:39,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:39,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:40:39,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:39,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:39,592 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:40:39,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:39,599 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-06-11 01:40:39,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:39,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:39,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:39,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:39,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:39,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:39,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:39,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:39,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:39,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:39,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:39,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:39,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:39,789 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:40:39,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:40:39,819 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:40:39,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:39,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611957820] [2021-06-11 01:40:39,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:39,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-11 01:40:39,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119161869] [2021-06-11 01:40:39,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-11 01:40:39,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:39,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-11 01:40:39,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-11 01:40:39,823 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:40:39,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 2215 transitions, 22578 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:39,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:39,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:40:39,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:43,836 INFO L129 PetriNetUnfolder]: 4265/7115 cut-off events. [2021-06-11 01:40:43,837 INFO L130 PetriNetUnfolder]: For 133645/133686 co-relation queries the response was YES. [2021-06-11 01:40:43,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51822 conditions, 7115 events. 4265/7115 cut-off events. For 133645/133686 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 44384 event pairs, 252 based on Foata normal form. 26/6633 useless extension candidates. Maximal degree in co-relation 51424. Up to 5229 conditions per place. [2021-06-11 01:40:44,060 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 2036 selfloop transitions, 590 changer transitions 0/2644 dead transitions. [2021-06-11 01:40:44,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 2644 transitions, 36720 flow [2021-06-11 01:40:44,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-11 01:40:44,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-06-11 01:40:44,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 3037 transitions. [2021-06-11 01:40:44,063 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6497646555412923 [2021-06-11 01:40:44,063 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 3037 transitions. [2021-06-11 01:40:44,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 3037 transitions. [2021-06-11 01:40:44,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:44,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 3037 transitions. [2021-06-11 01:40:44,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 53.280701754385966) internal successors, (3037), 57 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:44,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 82.0) internal successors, (4756), 58 states have internal predecessors, (4756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:44,070 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 82.0) internal successors, (4756), 58 states have internal predecessors, (4756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:44,070 INFO L185 Difference]: Start difference. First operand has 626 places, 2215 transitions, 22578 flow. Second operand 57 states and 3037 transitions. [2021-06-11 01:40:44,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 2644 transitions, 36720 flow [2021-06-11 01:40:45,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 2644 transitions, 33125 flow, removed 1777 selfloop flow, removed 2 redundant places. [2021-06-11 01:40:45,090 INFO L241 Difference]: Finished difference. Result has 707 places, 2570 transitions, 28508 flow [2021-06-11 01:40:45,092 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=19193, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1882, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=28508, PETRI_PLACES=707, PETRI_TRANSITIONS=2570} [2021-06-11 01:40:45,092 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 654 predicate places. [2021-06-11 01:40:45,092 INFO L480 AbstractCegarLoop]: Abstraction has has 707 places, 2570 transitions, 28508 flow [2021-06-11 01:40:45,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:45,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:45,092 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:45,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-11 01:40:45,092 INFO L428 AbstractCegarLoop]: === Iteration 13 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:45,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:45,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1146365083, now seen corresponding path program 11 times [2021-06-11 01:40:45,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:45,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973521844] [2021-06-11 01:40:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:45,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:45,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:40:45,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:45,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:45,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:45,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:45,125 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:40:45,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:45,131 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-06-11 01:40:45,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:45,138 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-06-11 01:40:45,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:45,146 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-06-11 01:40:45,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:45,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:45,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:45,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:45,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:45,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:45,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:45,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:45,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:45,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:45,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:45,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:45,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:45,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:45,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:45,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:45,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:45,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:45,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:45,313 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:40:45,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:40:45,337 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:40:45,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:45,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973521844] [2021-06-11 01:40:45,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:45,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-11 01:40:45,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641553594] [2021-06-11 01:40:45,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-11 01:40:45,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:45,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-11 01:40:45,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-11 01:40:45,352 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:40:45,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 2570 transitions, 28508 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:45,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:45,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:40:45,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:49,745 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2021-06-11 01:40:51,568 INFO L129 PetriNetUnfolder]: 4888/8170 cut-off events. [2021-06-11 01:40:51,568 INFO L130 PetriNetUnfolder]: For 190944/190985 co-relation queries the response was YES. [2021-06-11 01:40:51,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64303 conditions, 8170 events. 4888/8170 cut-off events. For 190944/190985 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 52199 event pairs, 299 based on Foata normal form. 27/7616 useless extension candidates. Maximal degree in co-relation 63795. Up to 5804 conditions per place. [2021-06-11 01:40:51,706 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 2225 selfloop transitions, 865 changer transitions 0/3108 dead transitions. [2021-06-11 01:40:51,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 794 places, 3108 transitions, 47822 flow [2021-06-11 01:40:51,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-06-11 01:40:51,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-06-11 01:40:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 4731 transitions. [2021-06-11 01:40:51,711 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6556263858093127 [2021-06-11 01:40:51,711 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 4731 transitions. [2021-06-11 01:40:51,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 4731 transitions. [2021-06-11 01:40:51,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:51,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 4731 transitions. [2021-06-11 01:40:51,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 53.76136363636363) internal successors, (4731), 88 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:51,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 82.0) internal successors, (7298), 89 states have internal predecessors, (7298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:51,722 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 82.0) internal successors, (7298), 89 states have internal predecessors, (7298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:51,722 INFO L185 Difference]: Start difference. First operand has 707 places, 2570 transitions, 28508 flow. Second operand 88 states and 4731 transitions. [2021-06-11 01:40:51,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 794 places, 3108 transitions, 47822 flow [2021-06-11 01:40:53,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 3108 transitions, 44385 flow, removed 1698 selfloop flow, removed 2 redundant places. [2021-06-11 01:40:53,630 INFO L241 Difference]: Finished difference. Result has 815 places, 3066 transitions, 40206 flow [2021-06-11 01:40:53,633 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=25287, PETRI_DIFFERENCE_MINUEND_PLACES=705, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2078, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=40206, PETRI_PLACES=815, PETRI_TRANSITIONS=3066} [2021-06-11 01:40:53,633 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 762 predicate places. [2021-06-11 01:40:53,633 INFO L480 AbstractCegarLoop]: Abstraction has has 815 places, 3066 transitions, 40206 flow [2021-06-11 01:40:53,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:53,634 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:40:53,634 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:40:53,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-11 01:40:53,634 INFO L428 AbstractCegarLoop]: === Iteration 14 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:40:53,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:40:53,635 INFO L82 PathProgramCache]: Analyzing trace with hash 757610911, now seen corresponding path program 12 times [2021-06-11 01:40:53,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:40:53,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649783580] [2021-06-11 01:40:53,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:40:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:40:53,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:40:53,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:53,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:40:53,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:53,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:53,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:53,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:53,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:53,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:53,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:53,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:53,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:53,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:53,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:53,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:53,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:40:53,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:40:53,859 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:40:53,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:40:53,881 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:40:53,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:40:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:40:53,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649783580] [2021-06-11 01:40:53,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:40:53,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:40:53,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815593275] [2021-06-11 01:40:53,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:40:53,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:40:53,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:40:53,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:40:53,885 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:40:53,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 815 places, 3066 transitions, 40206 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:53,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:40:53,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:40:53,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:40:59,098 INFO L129 PetriNetUnfolder]: 5294/8835 cut-off events. [2021-06-11 01:40:59,098 INFO L130 PetriNetUnfolder]: For 221515/221554 co-relation queries the response was YES. [2021-06-11 01:40:59,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71700 conditions, 8835 events. 5294/8835 cut-off events. For 221515/221554 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 57069 event pairs, 287 based on Foata normal form. 24/8241 useless extension candidates. Maximal degree in co-relation 71207. Up to 6639 conditions per place. [2021-06-11 01:40:59,254 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 2765 selfloop transitions, 639 changer transitions 0/3422 dead transitions. [2021-06-11 01:40:59,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 858 places, 3422 transitions, 53961 flow [2021-06-11 01:40:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-11 01:40:59,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-06-11 01:40:59,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2301 transitions. [2021-06-11 01:40:59,257 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6377494456762749 [2021-06-11 01:40:59,257 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2301 transitions. [2021-06-11 01:40:59,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2301 transitions. [2021-06-11 01:40:59,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:40:59,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2301 transitions. [2021-06-11 01:40:59,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.29545454545455) internal successors, (2301), 44 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:59,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 82.0) internal successors, (3690), 45 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:59,262 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 82.0) internal successors, (3690), 45 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:40:59,262 INFO L185 Difference]: Start difference. First operand has 815 places, 3066 transitions, 40206 flow. Second operand 44 states and 2301 transitions. [2021-06-11 01:40:59,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 858 places, 3422 transitions, 53961 flow [2021-06-11 01:41:01,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 858 places, 3422 transitions, 44417 flow, removed 4772 selfloop flow, removed 0 redundant places. [2021-06-11 01:41:01,990 INFO L241 Difference]: Finished difference. Result has 871 places, 3342 transitions, 37811 flow [2021-06-11 01:41:01,991 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=31276, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=406, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=37811, PETRI_PLACES=871, PETRI_TRANSITIONS=3342} [2021-06-11 01:41:01,992 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 818 predicate places. [2021-06-11 01:41:01,992 INFO L480 AbstractCegarLoop]: Abstraction has has 871 places, 3342 transitions, 37811 flow [2021-06-11 01:41:01,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:01,992 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:41:01,992 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:41:01,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-11 01:41:01,992 INFO L428 AbstractCegarLoop]: === Iteration 15 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:41:01,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:41:01,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1285726095, now seen corresponding path program 13 times [2021-06-11 01:41:01,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:41:01,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621977125] [2021-06-11 01:41:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:41:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:41:02,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:41:02,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:02,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:02,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:02,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:02,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:02,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:02,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:02,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:02,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:02,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:02,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:02,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:02,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:02,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:02,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:02,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:02,191 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:41:02,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:41:02,211 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:41:02,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:41:02,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621977125] [2021-06-11 01:41:02,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:41:02,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 01:41:02,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503458509] [2021-06-11 01:41:02,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-11 01:41:02,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:41:02,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-11 01:41:02,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-11 01:41:02,215 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:41:02,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 871 places, 3342 transitions, 37811 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:02,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:41:02,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:41:02,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:41:07,453 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-06-11 01:41:08,307 INFO L129 PetriNetUnfolder]: 5550/9303 cut-off events. [2021-06-11 01:41:08,307 INFO L130 PetriNetUnfolder]: For 231176/231217 co-relation queries the response was YES. [2021-06-11 01:41:08,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71972 conditions, 9303 events. 5550/9303 cut-off events. For 231176/231217 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 61467 event pairs, 320 based on Foata normal form. 26/8662 useless extension candidates. Maximal degree in co-relation 71421. Up to 6879 conditions per place. [2021-06-11 01:41:08,590 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 2822 selfloop transitions, 796 changer transitions 0/3636 dead transitions. [2021-06-11 01:41:08,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 3636 transitions, 52725 flow [2021-06-11 01:41:08,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-11 01:41:08,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-06-11 01:41:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 3496 transitions. [2021-06-11 01:41:08,593 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6459719142645972 [2021-06-11 01:41:08,594 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 3496 transitions. [2021-06-11 01:41:08,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 3496 transitions. [2021-06-11 01:41:08,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:41:08,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 3496 transitions. [2021-06-11 01:41:08,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 52.96969696969697) internal successors, (3496), 66 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:08,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 82.0) internal successors, (5494), 67 states have internal predecessors, (5494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:08,601 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 82.0) internal successors, (5494), 67 states have internal predecessors, (5494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:08,601 INFO L185 Difference]: Start difference. First operand has 871 places, 3342 transitions, 37811 flow. Second operand 66 states and 3496 transitions. [2021-06-11 01:41:08,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 3636 transitions, 52725 flow [2021-06-11 01:41:10,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 933 places, 3636 transitions, 50099 flow, removed 1213 selfloop flow, removed 3 redundant places. [2021-06-11 01:41:11,038 INFO L241 Difference]: Finished difference. Result has 956 places, 3576 transitions, 43192 flow [2021-06-11 01:41:11,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=35771, PETRI_DIFFERENCE_MINUEND_PLACES=868, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=595, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=43192, PETRI_PLACES=956, PETRI_TRANSITIONS=3576} [2021-06-11 01:41:11,040 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 903 predicate places. [2021-06-11 01:41:11,040 INFO L480 AbstractCegarLoop]: Abstraction has has 956 places, 3576 transitions, 43192 flow [2021-06-11 01:41:11,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:11,040 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:41:11,040 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:41:11,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-11 01:41:11,040 INFO L428 AbstractCegarLoop]: === Iteration 16 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:41:11,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:41:11,041 INFO L82 PathProgramCache]: Analyzing trace with hash -594897881, now seen corresponding path program 14 times [2021-06-11 01:41:11,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:41:11,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509256349] [2021-06-11 01:41:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:41:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:41:11,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:11,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:41:11,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:11,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:11,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:11,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:11,077 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:41:11,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:11,083 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-06-11 01:41:11,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:11,091 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-06-11 01:41:11,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-11 01:41:11,103 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-06-11 01:41:11,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-11 01:41:11,117 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-11 01:41:11,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-11 01:41:11,130 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-11 01:41:11,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-11 01:41:11,144 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-11 01:41:11,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-11 01:41:11,159 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-11 01:41:11,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-11 01:41:11,175 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-11 01:41:11,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-11 01:41:11,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:11,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:11,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:11,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:11,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:11,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:11,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:41:11,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:41:11,281 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:41:11,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:41:11,302 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:41:11,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:41:11,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509256349] [2021-06-11 01:41:11,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:41:11,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-11 01:41:11,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425810863] [2021-06-11 01:41:11,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-11 01:41:11,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:41:11,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-11 01:41:11,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-11 01:41:11,306 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:41:11,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 956 places, 3576 transitions, 43192 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:11,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:41:11,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:41:11,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:41:17,248 INFO L129 PetriNetUnfolder]: 5861/9791 cut-off events. [2021-06-11 01:41:17,249 INFO L130 PetriNetUnfolder]: For 294748/294789 co-relation queries the response was YES. [2021-06-11 01:41:17,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81255 conditions, 9791 events. 5861/9791 cut-off events. For 294748/294789 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 65004 event pairs, 413 based on Foata normal form. 26/9124 useless extension candidates. Maximal degree in co-relation 80906. Up to 7357 conditions per place. [2021-06-11 01:41:17,612 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3036 selfloop transitions, 814 changer transitions 0/3868 dead transitions. [2021-06-11 01:41:17,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 991 places, 3868 transitions, 58525 flow [2021-06-11 01:41:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-11 01:41:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-06-11 01:41:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1956 transitions. [2021-06-11 01:41:17,614 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6626016260162602 [2021-06-11 01:41:17,614 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1956 transitions. [2021-06-11 01:41:17,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1956 transitions. [2021-06-11 01:41:17,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:41:17,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1956 transitions. [2021-06-11 01:41:17,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 54.333333333333336) internal successors, (1956), 36 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:17,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 82.0) internal successors, (3034), 37 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:17,618 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 82.0) internal successors, (3034), 37 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:17,618 INFO L185 Difference]: Start difference. First operand has 956 places, 3576 transitions, 43192 flow. Second operand 36 states and 1956 transitions. [2021-06-11 01:41:17,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 991 places, 3868 transitions, 58525 flow [2021-06-11 01:41:20,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 979 places, 3868 transitions, 54307 flow, removed 1788 selfloop flow, removed 12 redundant places. [2021-06-11 01:41:20,606 INFO L241 Difference]: Finished difference. Result has 994 places, 3796 transitions, 47120 flow [2021-06-11 01:41:20,607 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=39084, PETRI_DIFFERENCE_MINUEND_PLACES=944, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=613, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2914, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=47120, PETRI_PLACES=994, PETRI_TRANSITIONS=3796} [2021-06-11 01:41:20,608 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 941 predicate places. [2021-06-11 01:41:20,608 INFO L480 AbstractCegarLoop]: Abstraction has has 994 places, 3796 transitions, 47120 flow [2021-06-11 01:41:20,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:20,608 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:41:20,608 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:41:20,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-11 01:41:20,608 INFO L428 AbstractCegarLoop]: === Iteration 17 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:41:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:41:20,608 INFO L82 PathProgramCache]: Analyzing trace with hash -7107125, now seen corresponding path program 15 times [2021-06-11 01:41:20,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:41:20,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52069343] [2021-06-11 01:41:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:41:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:41:20,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:41:20,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:20,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:20,651 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:41:20,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:20,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:20,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:20,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:20,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:20,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:20,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:20,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:20,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:20,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:20,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:20,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:20,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:20,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:20,837 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:41:20,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:41:20,857 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:41:20,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:41:20,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52069343] [2021-06-11 01:41:20,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:41:20,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:41:20,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076215665] [2021-06-11 01:41:20,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:41:20,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:41:20,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:41:20,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:41:20,860 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:41:20,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 994 places, 3796 transitions, 47120 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:20,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:41:20,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:41:20,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:41:27,855 INFO L129 PetriNetUnfolder]: 6209/10341 cut-off events. [2021-06-11 01:41:27,855 INFO L130 PetriNetUnfolder]: For 364587/364626 co-relation queries the response was YES. [2021-06-11 01:41:28,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90251 conditions, 10341 events. 6209/10341 cut-off events. For 364587/364626 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 69093 event pairs, 359 based on Foata normal form. 24/9645 useless extension candidates. Maximal degree in co-relation 89664. Up to 7714 conditions per place. [2021-06-11 01:41:28,086 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3183 selfloop transitions, 951 changer transitions 0/4152 dead transitions. [2021-06-11 01:41:28,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1052 places, 4152 transitions, 64354 flow [2021-06-11 01:41:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-11 01:41:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-06-11 01:41:28,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 3136 transitions. [2021-06-11 01:41:28,089 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6482017362546507 [2021-06-11 01:41:28,089 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 3136 transitions. [2021-06-11 01:41:28,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 3136 transitions. [2021-06-11 01:41:28,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:41:28,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 3136 transitions. [2021-06-11 01:41:28,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 53.152542372881356) internal successors, (3136), 59 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:28,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 82.0) internal successors, (4920), 60 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:28,095 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 82.0) internal successors, (4920), 60 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:28,095 INFO L185 Difference]: Start difference. First operand has 994 places, 3796 transitions, 47120 flow. Second operand 59 states and 3136 transitions. [2021-06-11 01:41:28,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1052 places, 4152 transitions, 64354 flow [2021-06-11 01:41:32,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1050 places, 4152 transitions, 61489 flow, removed 1412 selfloop flow, removed 2 redundant places. [2021-06-11 01:41:32,328 INFO L241 Difference]: Finished difference. Result has 1068 places, 4067 transitions, 53666 flow [2021-06-11 01:41:32,331 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=44409, PETRI_DIFFERENCE_MINUEND_PLACES=992, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=721, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3032, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=53666, PETRI_PLACES=1068, PETRI_TRANSITIONS=4067} [2021-06-11 01:41:32,331 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1015 predicate places. [2021-06-11 01:41:32,331 INFO L480 AbstractCegarLoop]: Abstraction has has 1068 places, 4067 transitions, 53666 flow [2021-06-11 01:41:32,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:32,331 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:41:32,331 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:41:32,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-11 01:41:32,331 INFO L428 AbstractCegarLoop]: === Iteration 18 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:41:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:41:32,332 INFO L82 PathProgramCache]: Analyzing trace with hash -920096161, now seen corresponding path program 16 times [2021-06-11 01:41:32,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:41:32,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660795342] [2021-06-11 01:41:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:41:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:41:32,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:41:32,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:32,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:32,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:32,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:32,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:32,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:32,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:32,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:32,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:32,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:32,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:32,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:32,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:32,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:32,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:32,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:32,548 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:41:32,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:41:32,569 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:41:32,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:41:32,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660795342] [2021-06-11 01:41:32,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:41:32,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:41:32,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515076841] [2021-06-11 01:41:32,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:41:32,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:41:32,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:41:32,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:41:32,573 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:41:32,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1068 places, 4067 transitions, 53666 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:32,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:41:32,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:41:32,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:41:40,240 INFO L129 PetriNetUnfolder]: 6413/10748 cut-off events. [2021-06-11 01:41:40,240 INFO L130 PetriNetUnfolder]: For 386395/386436 co-relation queries the response was YES. [2021-06-11 01:41:40,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94593 conditions, 10748 events. 6413/10748 cut-off events. For 386395/386436 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 73207 event pairs, 350 based on Foata normal form. 26/10005 useless extension candidates. Maximal degree in co-relation 94207. Up to 8064 conditions per place. [2021-06-11 01:41:40,517 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3423 selfloop transitions, 834 changer transitions 0/4275 dead transitions. [2021-06-11 01:41:40,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1120 places, 4275 transitions, 67329 flow [2021-06-11 01:41:40,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-11 01:41:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-06-11 01:41:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2754 transitions. [2021-06-11 01:41:40,520 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6336861481822366 [2021-06-11 01:41:40,520 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2754 transitions. [2021-06-11 01:41:40,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2754 transitions. [2021-06-11 01:41:40,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:41:40,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2754 transitions. [2021-06-11 01:41:40,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 51.9622641509434) internal successors, (2754), 53 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:40,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 82.0) internal successors, (4428), 54 states have internal predecessors, (4428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:40,525 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 82.0) internal successors, (4428), 54 states have internal predecessors, (4428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:40,525 INFO L185 Difference]: Start difference. First operand has 1068 places, 4067 transitions, 53666 flow. Second operand 53 states and 2754 transitions. [2021-06-11 01:41:40,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1120 places, 4275 transitions, 67329 flow [2021-06-11 01:41:44,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1106 places, 4275 transitions, 60988 flow, removed 2645 selfloop flow, removed 14 redundant places. [2021-06-11 01:41:45,020 INFO L241 Difference]: Finished difference. Result has 1120 places, 4236 transitions, 53293 flow [2021-06-11 01:41:45,023 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=47394, PETRI_DIFFERENCE_MINUEND_PLACES=1054, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=678, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=53293, PETRI_PLACES=1120, PETRI_TRANSITIONS=4236} [2021-06-11 01:41:45,023 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1067 predicate places. [2021-06-11 01:41:45,023 INFO L480 AbstractCegarLoop]: Abstraction has has 1120 places, 4236 transitions, 53293 flow [2021-06-11 01:41:45,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:45,024 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:41:45,024 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:41:45,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-11 01:41:45,024 INFO L428 AbstractCegarLoop]: === Iteration 19 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:41:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:41:45,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1830179307, now seen corresponding path program 17 times [2021-06-11 01:41:45,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:41:45,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469155885] [2021-06-11 01:41:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:41:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:41:45,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:41:45,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:45,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:45,058 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:41:45,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:45,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:45,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:45,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:45,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:45,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:45,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:45,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:45,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:45,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:45,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:45,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:45,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:45,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:45,210 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:41:45,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:41:45,230 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:41:45,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:45,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:41:45,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469155885] [2021-06-11 01:41:45,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:41:45,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 01:41:45,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368997465] [2021-06-11 01:41:45,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-11 01:41:45,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:41:45,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-11 01:41:45,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-11 01:41:45,233 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:41:45,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1120 places, 4236 transitions, 53293 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:45,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:41:45,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:41:45,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:41:52,674 INFO L129 PetriNetUnfolder]: 6594/11020 cut-off events. [2021-06-11 01:41:52,674 INFO L130 PetriNetUnfolder]: For 414813/414854 co-relation queries the response was YES. [2021-06-11 01:41:52,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97016 conditions, 11020 events. 6594/11020 cut-off events. For 414813/414854 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 75041 event pairs, 341 based on Foata normal form. 26/10298 useless extension candidates. Maximal degree in co-relation 96394. Up to 8310 conditions per place. [2021-06-11 01:41:52,931 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3468 selfloop transitions, 985 changer transitions 0/4471 dead transitions. [2021-06-11 01:41:52,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1162 places, 4471 transitions, 67796 flow [2021-06-11 01:41:52,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-11 01:41:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-06-11 01:41:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2305 transitions. [2021-06-11 01:41:52,933 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6537152580828134 [2021-06-11 01:41:52,933 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2305 transitions. [2021-06-11 01:41:52,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2305 transitions. [2021-06-11 01:41:52,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:41:52,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2305 transitions. [2021-06-11 01:41:52,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 53.604651162790695) internal successors, (2305), 43 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:52,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 82.0) internal successors, (3608), 44 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:52,936 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 82.0) internal successors, (3608), 44 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:52,936 INFO L185 Difference]: Start difference. First operand has 1120 places, 4236 transitions, 53293 flow. Second operand 43 states and 2305 transitions. [2021-06-11 01:41:52,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1162 places, 4471 transitions, 67796 flow [2021-06-11 01:41:58,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1149 places, 4471 transitions, 64064 flow, removed 1451 selfloop flow, removed 13 redundant places. [2021-06-11 01:41:58,294 INFO L241 Difference]: Finished difference. Result has 1162 places, 4398 transitions, 55779 flow [2021-06-11 01:41:58,297 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=49689, PETRI_DIFFERENCE_MINUEND_PLACES=1107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=843, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=55779, PETRI_PLACES=1162, PETRI_TRANSITIONS=4398} [2021-06-11 01:41:58,297 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1109 predicate places. [2021-06-11 01:41:58,298 INFO L480 AbstractCegarLoop]: Abstraction has has 1162 places, 4398 transitions, 55779 flow [2021-06-11 01:41:58,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:58,298 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:41:58,298 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:41:58,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-11 01:41:58,298 INFO L428 AbstractCegarLoop]: === Iteration 20 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:41:58,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:41:58,298 INFO L82 PathProgramCache]: Analyzing trace with hash -2111146965, now seen corresponding path program 18 times [2021-06-11 01:41:58,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:41:58,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749237811] [2021-06-11 01:41:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:41:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:41:58,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:41:58,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:58,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:41:58,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:58,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:58,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:58,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:58,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:58,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:58,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:58,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:58,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:58,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:58,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:58,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:58,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:41:58,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:41:58,488 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:41:58,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:41:58,508 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:41:58,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:41:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:41:58,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749237811] [2021-06-11 01:41:58,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:41:58,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 01:41:58,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642117198] [2021-06-11 01:41:58,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-11 01:41:58,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:41:58,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-11 01:41:58,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-11 01:41:58,511 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:41:58,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1162 places, 4398 transitions, 55779 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:41:58,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:41:58,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:41:58,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:42:06,376 INFO L129 PetriNetUnfolder]: 6677/11184 cut-off events. [2021-06-11 01:42:06,376 INFO L130 PetriNetUnfolder]: For 401059/401100 co-relation queries the response was YES. [2021-06-11 01:42:06,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97888 conditions, 11184 events. 6677/11184 cut-off events. For 401059/401100 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 76597 event pairs, 362 based on Foata normal form. 26/10433 useless extension candidates. Maximal degree in co-relation 97481. Up to 8546 conditions per place. [2021-06-11 01:42:06,631 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3665 selfloop transitions, 835 changer transitions 0/4518 dead transitions. [2021-06-11 01:42:06,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1205 places, 4518 transitions, 68058 flow [2021-06-11 01:42:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-11 01:42:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-06-11 01:42:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2317 transitions. [2021-06-11 01:42:06,633 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6421840354767184 [2021-06-11 01:42:06,633 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2317 transitions. [2021-06-11 01:42:06,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2317 transitions. [2021-06-11 01:42:06,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:42:06,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2317 transitions. [2021-06-11 01:42:06,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.65909090909091) internal successors, (2317), 44 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:06,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 82.0) internal successors, (3690), 45 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:06,637 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 82.0) internal successors, (3690), 45 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:06,637 INFO L185 Difference]: Start difference. First operand has 1162 places, 4398 transitions, 55779 flow. Second operand 44 states and 2317 transitions. [2021-06-11 01:42:06,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1205 places, 4518 transitions, 68058 flow [2021-06-11 01:42:11,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1199 places, 4518 transitions, 65647 flow, removed 988 selfloop flow, removed 6 redundant places. [2021-06-11 01:42:11,902 INFO L241 Difference]: Finished difference. Result has 1206 places, 4483 transitions, 57768 flow [2021-06-11 01:42:11,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=53368, PETRI_DIFFERENCE_MINUEND_PLACES=1156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=763, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=57768, PETRI_PLACES=1206, PETRI_TRANSITIONS=4483} [2021-06-11 01:42:11,904 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1153 predicate places. [2021-06-11 01:42:11,904 INFO L480 AbstractCegarLoop]: Abstraction has has 1206 places, 4483 transitions, 57768 flow [2021-06-11 01:42:11,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:11,904 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:42:11,904 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:42:11,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-11 01:42:11,905 INFO L428 AbstractCegarLoop]: === Iteration 21 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:42:11,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:42:11,905 INFO L82 PathProgramCache]: Analyzing trace with hash -39401661, now seen corresponding path program 19 times [2021-06-11 01:42:11,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:42:11,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616392122] [2021-06-11 01:42:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:42:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:42:11,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:11,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:42:11,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:11,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:42:11,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:11,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:42:11,950 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:42:11,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:42:11,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:11,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:42:11,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:11,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:11,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:11,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:11,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:11,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:12,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:12,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:12,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:12,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:12,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:12,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:12,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:12,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:12,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:12,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:12,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:12,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:12,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:12,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:12,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:12,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:12,125 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:42:12,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:42:12,145 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:42:12,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:42:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:42:12,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616392122] [2021-06-11 01:42:12,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:42:12,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:42:12,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973836106] [2021-06-11 01:42:12,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:42:12,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:42:12,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:42:12,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:42:12,151 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:42:12,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1206 places, 4483 transitions, 57768 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:12,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:42:12,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:42:12,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:42:20,464 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2021-06-11 01:42:20,848 INFO L129 PetriNetUnfolder]: 7061/11839 cut-off events. [2021-06-11 01:42:20,849 INFO L130 PetriNetUnfolder]: For 461450/461491 co-relation queries the response was YES. [2021-06-11 01:42:21,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105660 conditions, 11839 events. 7061/11839 cut-off events. For 461450/461491 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 82181 event pairs, 358 based on Foata normal form. 26/11028 useless extension candidates. Maximal degree in co-relation 105244. Up to 8689 conditions per place. [2021-06-11 01:42:21,145 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3681 selfloop transitions, 1114 changer transitions 0/4813 dead transitions. [2021-06-11 01:42:21,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1256 places, 4813 transitions, 74779 flow [2021-06-11 01:42:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-11 01:42:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-06-11 01:42:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2705 transitions. [2021-06-11 01:42:21,147 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6468197034911526 [2021-06-11 01:42:21,147 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2705 transitions. [2021-06-11 01:42:21,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2705 transitions. [2021-06-11 01:42:21,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:42:21,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2705 transitions. [2021-06-11 01:42:21,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 53.03921568627451) internal successors, (2705), 51 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:21,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 82.0) internal successors, (4264), 52 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:21,151 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 82.0) internal successors, (4264), 52 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:21,151 INFO L185 Difference]: Start difference. First operand has 1206 places, 4483 transitions, 57768 flow. Second operand 51 states and 2705 transitions. [2021-06-11 01:42:21,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1256 places, 4813 transitions, 74779 flow [2021-06-11 01:42:27,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1236 places, 4813 transitions, 71907 flow, removed 934 selfloop flow, removed 20 redundant places. [2021-06-11 01:42:27,368 INFO L241 Difference]: Finished difference. Result has 1255 places, 4724 transitions, 62753 flow [2021-06-11 01:42:27,371 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=54950, PETRI_DIFFERENCE_MINUEND_PLACES=1186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=895, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=62753, PETRI_PLACES=1255, PETRI_TRANSITIONS=4724} [2021-06-11 01:42:27,371 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1202 predicate places. [2021-06-11 01:42:27,371 INFO L480 AbstractCegarLoop]: Abstraction has has 1255 places, 4724 transitions, 62753 flow [2021-06-11 01:42:27,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:27,371 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:42:27,371 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:42:27,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-11 01:42:27,371 INFO L428 AbstractCegarLoop]: === Iteration 22 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:42:27,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:42:27,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1027263643, now seen corresponding path program 20 times [2021-06-11 01:42:27,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:42:27,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506734648] [2021-06-11 01:42:27,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:42:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:42:27,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:42:27,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:42:27,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:42:27,401 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:42:27,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:42:27,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:42:27,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:27,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:27,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:27,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:27,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:42:27,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:42:27,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:42:27,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:27,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:27,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:27,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:27,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:27,583 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 01:42:27,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:42:27,604 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:42:27,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:42:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:42:27,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506734648] [2021-06-11 01:42:27,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:42:27,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:42:27,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506193275] [2021-06-11 01:42:27,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:42:27,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:42:27,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:42:27,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:42:27,607 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:42:27,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1255 places, 4724 transitions, 62753 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:27,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:42:27,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:42:27,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:42:39,280 INFO L129 PetriNetUnfolder]: 7528/12710 cut-off events. [2021-06-11 01:42:39,280 INFO L130 PetriNetUnfolder]: For 563407/563448 co-relation queries the response was YES. [2021-06-11 01:42:39,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120193 conditions, 12710 events. 7528/12710 cut-off events. For 563407/563448 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 90275 event pairs, 365 based on Foata normal form. 26/11827 useless extension candidates. Maximal degree in co-relation 119759. Up to 9009 conditions per place. [2021-06-11 01:42:39,796 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3788 selfloop transitions, 1389 changer transitions 0/5195 dead transitions. [2021-06-11 01:42:39,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1355 places, 5195 transitions, 88063 flow [2021-06-11 01:42:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-06-11 01:42:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-06-11 01:42:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 5284 transitions. [2021-06-11 01:42:39,800 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6380101424776624 [2021-06-11 01:42:39,800 INFO L72 ComplementDD]: Start complementDD. Operand 101 states and 5284 transitions. [2021-06-11 01:42:39,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 5284 transitions. [2021-06-11 01:42:39,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:42:39,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 101 states and 5284 transitions. [2021-06-11 01:42:39,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 102 states, 101 states have (on average 52.31683168316832) internal successors, (5284), 101 states have internal predecessors, (5284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:39,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 102 states, 102 states have (on average 82.0) internal successors, (8364), 102 states have internal predecessors, (8364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:39,808 INFO L81 ComplementDD]: Finished complementDD. Result has 102 states, 102 states have (on average 82.0) internal successors, (8364), 102 states have internal predecessors, (8364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:39,808 INFO L185 Difference]: Start difference. First operand has 1255 places, 4724 transitions, 62753 flow. Second operand 101 states and 5284 transitions. [2021-06-11 01:42:39,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1355 places, 5195 transitions, 88063 flow [2021-06-11 01:42:48,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1347 places, 5195 transitions, 82856 flow, removed 2161 selfloop flow, removed 8 redundant places. [2021-06-11 01:42:49,037 INFO L241 Difference]: Finished difference. Result has 1368 places, 5114 transitions, 73657 flow [2021-06-11 01:42:49,041 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=58778, PETRI_DIFFERENCE_MINUEND_PLACES=1247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=73657, PETRI_PLACES=1368, PETRI_TRANSITIONS=5114} [2021-06-11 01:42:49,041 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1315 predicate places. [2021-06-11 01:42:49,041 INFO L480 AbstractCegarLoop]: Abstraction has has 1368 places, 5114 transitions, 73657 flow [2021-06-11 01:42:49,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:49,041 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:42:49,041 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:42:49,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-11 01:42:49,041 INFO L428 AbstractCegarLoop]: === Iteration 23 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:42:49,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:42:49,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1237737417, now seen corresponding path program 21 times [2021-06-11 01:42:49,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:42:49,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985700246] [2021-06-11 01:42:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:42:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:42:49,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:42:49,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:42:49,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:42:49,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:42:49,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:42:49,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:49,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:49,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:49,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:49,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:42:49,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:42:49,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 01:42:49,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:42:49,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:49,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:49,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:42:49,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:42:49,254 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:42:49,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:42:49,275 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:42:49,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:42:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:42:49,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985700246] [2021-06-11 01:42:49,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:42:49,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:42:49,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036214564] [2021-06-11 01:42:49,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:42:49,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:42:49,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:42:49,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:42:49,279 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:42:49,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1368 places, 5114 transitions, 73657 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:42:49,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:42:49,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:42:49,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:42:52,705 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-06-11 01:43:03,010 INFO L129 PetriNetUnfolder]: 8414/14118 cut-off events. [2021-06-11 01:43:03,010 INFO L130 PetriNetUnfolder]: For 703862/703903 co-relation queries the response was YES. [2021-06-11 01:43:03,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140803 conditions, 14118 events. 8414/14118 cut-off events. For 703862/703903 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 101473 event pairs, 360 based on Foata normal form. 26/13171 useless extension candidates. Maximal degree in co-relation 140302. Up to 9694 conditions per place. [2021-06-11 01:43:03,397 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 3945 selfloop transitions, 2064 changer transitions 0/6027 dead transitions. [2021-06-11 01:43:03,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1467 places, 6027 transitions, 108383 flow [2021-06-11 01:43:03,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-06-11 01:43:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-06-11 01:43:03,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 5287 transitions. [2021-06-11 01:43:03,401 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6447560975609756 [2021-06-11 01:43:03,401 INFO L72 ComplementDD]: Start complementDD. Operand 100 states and 5287 transitions. [2021-06-11 01:43:03,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 100 states and 5287 transitions. [2021-06-11 01:43:03,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:43:03,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 100 states and 5287 transitions. [2021-06-11 01:43:03,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 101 states, 100 states have (on average 52.87) internal successors, (5287), 100 states have internal predecessors, (5287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:43:03,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 101 states, 101 states have (on average 82.0) internal successors, (8282), 101 states have internal predecessors, (8282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:43:03,409 INFO L81 ComplementDD]: Finished complementDD. Result has 101 states, 101 states have (on average 82.0) internal successors, (8282), 101 states have internal predecessors, (8282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:43:03,409 INFO L185 Difference]: Start difference. First operand has 1368 places, 5114 transitions, 73657 flow. Second operand 100 states and 5287 transitions. [2021-06-11 01:43:03,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1467 places, 6027 transitions, 108383 flow [2021-06-11 01:43:16,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1461 places, 6027 transitions, 99821 flow, removed 4161 selfloop flow, removed 6 redundant places. [2021-06-11 01:43:16,330 INFO L241 Difference]: Finished difference. Result has 1485 places, 5898 transitions, 90311 flow [2021-06-11 01:43:16,333 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=65099, PETRI_DIFFERENCE_MINUEND_PLACES=1362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=90311, PETRI_PLACES=1485, PETRI_TRANSITIONS=5898} [2021-06-11 01:43:16,333 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1432 predicate places. [2021-06-11 01:43:16,333 INFO L480 AbstractCegarLoop]: Abstraction has has 1485 places, 5898 transitions, 90311 flow [2021-06-11 01:43:16,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:43:16,334 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:43:16,334 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:43:16,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-11 01:43:16,334 INFO L428 AbstractCegarLoop]: === Iteration 24 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:43:16,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:43:16,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2116533617, now seen corresponding path program 22 times [2021-06-11 01:43:16,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:43:16,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870771816] [2021-06-11 01:43:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:43:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:43:16,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:43:16,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:43:16,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:43:16,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:43:16,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:43:16,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:16,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:16,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:16,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:16,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:43:16,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:43:16,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:43:16,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:43:16,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:16,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:16,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:16,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:16,531 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:43:16,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:43:16,553 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:43:16,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:43:16,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:43:16,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870771816] [2021-06-11 01:43:16,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:43:16,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 01:43:16,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295983927] [2021-06-11 01:43:16,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-11 01:43:16,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:43:16,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-11 01:43:16,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-11 01:43:16,557 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:43:16,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1485 places, 5898 transitions, 90311 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:43:16,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:43:16,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:43:16,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:43:30,018 INFO L129 PetriNetUnfolder]: 8526/14325 cut-off events. [2021-06-11 01:43:30,018 INFO L130 PetriNetUnfolder]: For 716707/716746 co-relation queries the response was YES. [2021-06-11 01:43:30,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142596 conditions, 14325 events. 8526/14325 cut-off events. For 716707/716746 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 103291 event pairs, 397 based on Foata normal form. 24/13366 useless extension candidates. Maximal degree in co-relation 142127. Up to 10878 conditions per place. [2021-06-11 01:43:30,511 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 4791 selfloop transitions, 1255 changer transitions 0/6064 dead transitions. [2021-06-11 01:43:30,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1522 places, 6064 transitions, 107467 flow [2021-06-11 01:43:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-11 01:43:30,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-06-11 01:43:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1998 transitions. [2021-06-11 01:43:30,512 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.641206675224647 [2021-06-11 01:43:30,513 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1998 transitions. [2021-06-11 01:43:30,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1998 transitions. [2021-06-11 01:43:30,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:43:30,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1998 transitions. [2021-06-11 01:43:30,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.578947368421055) internal successors, (1998), 38 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:43:30,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 82.0) internal successors, (3198), 39 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:43:30,516 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 82.0) internal successors, (3198), 39 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:43:30,516 INFO L185 Difference]: Start difference. First operand has 1485 places, 5898 transitions, 90311 flow. Second operand 38 states and 1998 transitions. [2021-06-11 01:43:30,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1522 places, 6064 transitions, 107467 flow [2021-06-11 01:43:43,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1512 places, 6064 transitions, 94830 flow, removed 5985 selfloop flow, removed 10 redundant places. [2021-06-11 01:43:43,505 INFO L241 Difference]: Finished difference. Result has 1520 places, 6029 transitions, 84891 flow [2021-06-11 01:43:43,510 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=78236, PETRI_DIFFERENCE_MINUEND_PLACES=1475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=84891, PETRI_PLACES=1520, PETRI_TRANSITIONS=6029} [2021-06-11 01:43:43,510 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1467 predicate places. [2021-06-11 01:43:43,510 INFO L480 AbstractCegarLoop]: Abstraction has has 1520 places, 6029 transitions, 84891 flow [2021-06-11 01:43:43,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:43:43,510 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:43:43,510 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:43:43,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-11 01:43:43,510 INFO L428 AbstractCegarLoop]: === Iteration 25 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:43:43,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:43:43,511 INFO L82 PathProgramCache]: Analyzing trace with hash 551854925, now seen corresponding path program 23 times [2021-06-11 01:43:43,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:43:43,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647114889] [2021-06-11 01:43:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:43:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:43:43,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:43:43,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:43:43,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:43:43,539 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:43:43,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:43:43,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:43:43,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:43,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:43,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:43,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:43,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:43:43,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:43:43,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:43,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:43,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:43,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:43,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:43:43,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:43:43,731 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:43:43,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:43:43,753 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:43:43,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:43:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:43:43,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647114889] [2021-06-11 01:43:43,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:43:43,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:43:43,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122893720] [2021-06-11 01:43:43,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:43:43,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:43:43,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:43:43,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:43:43,757 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:43:43,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1520 places, 6029 transitions, 84891 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:43:43,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:43:43,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:43:43,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:43:56,113 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-06-11 01:43:57,297 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2021-06-11 01:43:59,100 INFO L129 PetriNetUnfolder]: 9013/15299 cut-off events. [2021-06-11 01:43:59,100 INFO L130 PetriNetUnfolder]: For 669641/669682 co-relation queries the response was YES. [2021-06-11 01:43:59,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143518 conditions, 15299 events. 9013/15299 cut-off events. For 669641/669682 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 113208 event pairs, 379 based on Foata normal form. 26/14232 useless extension candidates. Maximal degree in co-relation 143024. Up to 10833 conditions per place. [2021-06-11 01:43:59,656 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 4888 selfloop transitions, 1678 changer transitions 0/6584 dead transitions. [2021-06-11 01:43:59,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1604 places, 6584 transitions, 111367 flow [2021-06-11 01:43:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-06-11 01:43:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-06-11 01:43:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 4516 transitions. [2021-06-11 01:43:59,659 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6479196556671449 [2021-06-11 01:43:59,659 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 4516 transitions. [2021-06-11 01:43:59,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 4516 transitions. [2021-06-11 01:43:59,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:43:59,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 4516 transitions. [2021-06-11 01:43:59,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 53.129411764705885) internal successors, (4516), 85 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:43:59,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 82.0) internal successors, (7052), 86 states have internal predecessors, (7052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:43:59,665 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 82.0) internal successors, (7052), 86 states have internal predecessors, (7052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:43:59,665 INFO L185 Difference]: Start difference. First operand has 1520 places, 6029 transitions, 84891 flow. Second operand 85 states and 4516 transitions. [2021-06-11 01:43:59,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1604 places, 6584 transitions, 111367 flow [2021-06-11 01:44:10,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1592 places, 6584 transitions, 107077 flow, removed 1659 selfloop flow, removed 12 redundant places. [2021-06-11 01:44:10,944 INFO L241 Difference]: Finished difference. Result has 1641 places, 6446 transitions, 95291 flow [2021-06-11 01:44:10,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=80675, PETRI_DIFFERENCE_MINUEND_PLACES=1508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6029, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=95291, PETRI_PLACES=1641, PETRI_TRANSITIONS=6446} [2021-06-11 01:44:10,948 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1588 predicate places. [2021-06-11 01:44:10,948 INFO L480 AbstractCegarLoop]: Abstraction has has 1641 places, 6446 transitions, 95291 flow [2021-06-11 01:44:10,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:44:10,948 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:44:10,948 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:44:10,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-11 01:44:10,948 INFO L428 AbstractCegarLoop]: === Iteration 26 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:44:10,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:44:10,949 INFO L82 PathProgramCache]: Analyzing trace with hash 737261555, now seen corresponding path program 24 times [2021-06-11 01:44:10,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:44:10,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171027461] [2021-06-11 01:44:10,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:44:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:44:10,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:10,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:44:10,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:10,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:44:10,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:10,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:44:10,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:10,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:44:10,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:10,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:44:10,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:10,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:11,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:11,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:11,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:11,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:11,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:11,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:11,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:11,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:44:11,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:11,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:44:11,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:11,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 01:44:11,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:11,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:44:11,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:11,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:11,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:11,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:11,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:11,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:11,157 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:44:11,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:44:11,181 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:44:11,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:44:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:44:11,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171027461] [2021-06-11 01:44:11,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:44:11,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:44:11,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801406557] [2021-06-11 01:44:11,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:44:11,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:44:11,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:44:11,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:44:11,184 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:44:11,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1641 places, 6446 transitions, 95291 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:44:11,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:44:11,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:44:11,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:44:21,972 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-06-11 01:44:29,810 INFO L129 PetriNetUnfolder]: 9624/16465 cut-off events. [2021-06-11 01:44:29,811 INFO L130 PetriNetUnfolder]: For 814262/814303 co-relation queries the response was YES. [2021-06-11 01:44:30,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164897 conditions, 16465 events. 9624/16465 cut-off events. For 814262/814303 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 125233 event pairs, 370 based on Foata normal form. 27/15303 useless extension candidates. Maximal degree in co-relation 164398. Up to 10363 conditions per place. [2021-06-11 01:44:30,491 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 4285 selfloop transitions, 2841 changer transitions 0/7144 dead transitions. [2021-06-11 01:44:30,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1734 places, 7144 transitions, 132517 flow [2021-06-11 01:44:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-06-11 01:44:30,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-06-11 01:44:30,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 4964 transitions. [2021-06-11 01:44:30,494 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6440062272963155 [2021-06-11 01:44:30,494 INFO L72 ComplementDD]: Start complementDD. Operand 94 states and 4964 transitions. [2021-06-11 01:44:30,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 4964 transitions. [2021-06-11 01:44:30,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:44:30,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 94 states and 4964 transitions. [2021-06-11 01:44:30,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 95 states, 94 states have (on average 52.808510638297875) internal successors, (4964), 94 states have internal predecessors, (4964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:44:30,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 95 states, 95 states have (on average 82.0) internal successors, (7790), 95 states have internal predecessors, (7790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:44:30,501 INFO L81 ComplementDD]: Finished complementDD. Result has 95 states, 95 states have (on average 82.0) internal successors, (7790), 95 states have internal predecessors, (7790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:44:30,501 INFO L185 Difference]: Start difference. First operand has 1641 places, 6446 transitions, 95291 flow. Second operand 94 states and 4964 transitions. [2021-06-11 01:44:30,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1734 places, 7144 transitions, 132517 flow [2021-06-11 01:44:47,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1723 places, 7144 transitions, 125525 flow, removed 3095 selfloop flow, removed 11 redundant places. [2021-06-11 01:44:47,530 INFO L241 Difference]: Finished difference. Result has 1751 places, 6997 transitions, 115294 flow [2021-06-11 01:44:47,534 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=90498, PETRI_DIFFERENCE_MINUEND_PLACES=1630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3932, PETRI_DIFFERENCE_SUBTRAHEND_STATES=94, PETRI_FLOW=115294, PETRI_PLACES=1751, PETRI_TRANSITIONS=6997} [2021-06-11 01:44:47,534 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1698 predicate places. [2021-06-11 01:44:47,534 INFO L480 AbstractCegarLoop]: Abstraction has has 1751 places, 6997 transitions, 115294 flow [2021-06-11 01:44:47,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:44:47,535 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:44:47,535 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:44:47,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-11 01:44:47,535 INFO L428 AbstractCegarLoop]: === Iteration 27 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:44:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:44:47,535 INFO L82 PathProgramCache]: Analyzing trace with hash -2125702871, now seen corresponding path program 25 times [2021-06-11 01:44:47,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:44:47,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380857653] [2021-06-11 01:44:47,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:44:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:44:47,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:44:47,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:44:47,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:44:47,563 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:44:47,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:44:47,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:44:47,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:47,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:47,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:47,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:47,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:44:47,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:44:47,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:44:47,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:47,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:47,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:47,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:44:47,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:44:47,744 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:44:47,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:44:47,767 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:44:47,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:44:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:44:47,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380857653] [2021-06-11 01:44:47,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:44:47,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:44:47,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545272786] [2021-06-11 01:44:47,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:44:47,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:44:47,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:44:47,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:44:47,771 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:44:47,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1751 places, 6997 transitions, 115294 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:44:47,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:44:47,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:44:47,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:45:07,717 INFO L129 PetriNetUnfolder]: 9718/16632 cut-off events. [2021-06-11 01:45:07,717 INFO L130 PetriNetUnfolder]: For 866395/866436 co-relation queries the response was YES. [2021-06-11 01:45:08,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170845 conditions, 16632 events. 9718/16632 cut-off events. For 866395/866436 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 126664 event pairs, 402 based on Foata normal form. 26/15467 useless extension candidates. Maximal degree in co-relation 170338. Up to 12422 conditions per place. [2021-06-11 01:45:08,444 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 5902 selfloop transitions, 1270 changer transitions 0/7190 dead transitions. [2021-06-11 01:45:08,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1797 places, 7190 transitions, 135513 flow [2021-06-11 01:45:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-11 01:45:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-06-11 01:45:08,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2505 transitions. [2021-06-11 01:45:08,446 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6499740529320187 [2021-06-11 01:45:08,446 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2505 transitions. [2021-06-11 01:45:08,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2505 transitions. [2021-06-11 01:45:08,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:45:08,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2505 transitions. [2021-06-11 01:45:08,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 53.297872340425535) internal successors, (2505), 47 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:45:08,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:45:08,450 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:45:08,450 INFO L185 Difference]: Start difference. First operand has 1751 places, 6997 transitions, 115294 flow. Second operand 47 states and 2505 transitions. [2021-06-11 01:45:08,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1797 places, 7190 transitions, 135513 flow [2021-06-11 01:45:27,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1773 places, 7190 transitions, 125690 flow, removed 4535 selfloop flow, removed 24 redundant places. [2021-06-11 01:45:27,875 INFO L241 Difference]: Finished difference. Result has 1787 places, 7113 transitions, 112156 flow [2021-06-11 01:45:27,878 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=105487, PETRI_DIFFERENCE_MINUEND_PLACES=1727, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6997, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=112156, PETRI_PLACES=1787, PETRI_TRANSITIONS=7113} [2021-06-11 01:45:27,878 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1734 predicate places. [2021-06-11 01:45:27,878 INFO L480 AbstractCegarLoop]: Abstraction has has 1787 places, 7113 transitions, 112156 flow [2021-06-11 01:45:27,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:45:27,879 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:45:27,879 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:45:27,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-11 01:45:27,879 INFO L428 AbstractCegarLoop]: === Iteration 28 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:45:27,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:45:27,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1220000841, now seen corresponding path program 26 times [2021-06-11 01:45:27,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:45:27,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085503966] [2021-06-11 01:45:27,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:45:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:45:27,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:27,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:45:27,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:27,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:45:27,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:27,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:45:27,907 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:45:27,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:45:27,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:27,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:45:27,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:27,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:45:27,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:27,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:45:27,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:27,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:45:27,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:27,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:45:27,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:27,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:45:27,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:27,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:45:28,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:28,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 01:45:28,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:28,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:45:28,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:28,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:45:28,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:28,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:45:28,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:45:28,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:45:28,079 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:45:28,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:45:28,099 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:45:28,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:45:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:45:28,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085503966] [2021-06-11 01:45:28,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:45:28,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:45:28,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104758900] [2021-06-11 01:45:28,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:45:28,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:45:28,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:45:28,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:45:28,108 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:45:28,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1787 places, 7113 transitions, 112156 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:45:28,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:45:28,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:45:28,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:45:46,241 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-06-11 01:45:49,346 INFO L129 PetriNetUnfolder]: 10140/17478 cut-off events. [2021-06-11 01:45:49,346 INFO L130 PetriNetUnfolder]: For 948738/948779 co-relation queries the response was YES. [2021-06-11 01:45:49,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178770 conditions, 17478 events. 10140/17478 cut-off events. For 948738/948779 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 135640 event pairs, 410 based on Foata normal form. 26/16224 useless extension candidates. Maximal degree in co-relation 178251. Up to 12284 conditions per place. [2021-06-11 01:45:50,063 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 5749 selfloop transitions, 1882 changer transitions 0/7649 dead transitions. [2021-06-11 01:45:50,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1863 places, 7649 transitions, 144111 flow [2021-06-11 01:45:50,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-06-11 01:45:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-06-11 01:45:50,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 4081 transitions. [2021-06-11 01:45:50,066 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2021-06-11 01:45:50,066 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 4081 transitions. [2021-06-11 01:45:50,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 4081 transitions. [2021-06-11 01:45:50,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:45:50,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 4081 transitions. [2021-06-11 01:45:50,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 53.0) internal successors, (4081), 77 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:45:50,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 82.0) internal successors, (6396), 78 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:45:50,072 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 82.0) internal successors, (6396), 78 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:45:50,072 INFO L185 Difference]: Start difference. First operand has 1787 places, 7113 transitions, 112156 flow. Second operand 77 states and 4081 transitions. [2021-06-11 01:45:50,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1863 places, 7649 transitions, 144111 flow [2021-06-11 01:46:11,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1847 places, 7649 transitions, 139047 flow, removed 2037 selfloop flow, removed 16 redundant places. [2021-06-11 01:46:11,135 INFO L241 Difference]: Finished difference. Result has 1881 places, 7518 transitions, 126537 flow [2021-06-11 01:46:11,139 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=108338, PETRI_DIFFERENCE_MINUEND_PLACES=1771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1550, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=126537, PETRI_PLACES=1881, PETRI_TRANSITIONS=7518} [2021-06-11 01:46:11,139 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1828 predicate places. [2021-06-11 01:46:11,139 INFO L480 AbstractCegarLoop]: Abstraction has has 1881 places, 7518 transitions, 126537 flow [2021-06-11 01:46:11,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:46:11,139 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:46:11,139 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:46:11,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-11 01:46:11,139 INFO L428 AbstractCegarLoop]: === Iteration 29 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:46:11,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:46:11,140 INFO L82 PathProgramCache]: Analyzing trace with hash 748164273, now seen corresponding path program 27 times [2021-06-11 01:46:11,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:46:11,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614429519] [2021-06-11 01:46:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:46:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:46:11,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:46:11,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:46:11,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:46:11,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:46:11,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:46:11,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:11,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:11,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:11,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:11,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:46:11,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:46:11,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:11,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:11,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:11,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:11,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:11,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:11,329 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:46:11,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:46:11,349 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:46:11,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:46:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:46:11,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614429519] [2021-06-11 01:46:11,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:46:11,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 01:46:11,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088013859] [2021-06-11 01:46:11,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-11 01:46:11,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:46:11,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-11 01:46:11,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-11 01:46:11,353 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:46:11,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1881 places, 7518 transitions, 126537 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:46:11,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:46:11,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:46:11,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:46:32,798 INFO L129 PetriNetUnfolder]: 10157/17548 cut-off events. [2021-06-11 01:46:32,798 INFO L130 PetriNetUnfolder]: For 929999/930038 co-relation queries the response was YES. [2021-06-11 01:46:33,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180736 conditions, 17548 events. 10157/17548 cut-off events. For 929999/930038 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 136687 event pairs, 422 based on Foata normal form. 24/16278 useless extension candidates. Maximal degree in co-relation 180197. Up to 13162 conditions per place. [2021-06-11 01:46:33,508 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6456 selfloop transitions, 1109 changer transitions 0/7583 dead transitions. [2021-06-11 01:46:33,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1914 places, 7583 transitions, 143782 flow [2021-06-11 01:46:33,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-11 01:46:33,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-06-11 01:46:33,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1789 transitions. [2021-06-11 01:46:33,514 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6416786226685797 [2021-06-11 01:46:33,514 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1789 transitions. [2021-06-11 01:46:33,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1789 transitions. [2021-06-11 01:46:33,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:46:33,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1789 transitions. [2021-06-11 01:46:33,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.61764705882353) internal successors, (1789), 34 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:46:33,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 82.0) internal successors, (2870), 35 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:46:33,516 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 82.0) internal successors, (2870), 35 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:46:33,517 INFO L185 Difference]: Start difference. First operand has 1881 places, 7518 transitions, 126537 flow. Second operand 34 states and 1789 transitions. [2021-06-11 01:46:33,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1914 places, 7583 transitions, 143782 flow [2021-06-11 01:46:56,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1902 places, 7583 transitions, 135135 flow, removed 4003 selfloop flow, removed 12 redundant places. [2021-06-11 01:46:56,276 INFO L241 Difference]: Finished difference. Result has 1905 places, 7542 transitions, 121352 flow [2021-06-11 01:46:56,279 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=117894, PETRI_DIFFERENCE_MINUEND_PLACES=1869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=121352, PETRI_PLACES=1905, PETRI_TRANSITIONS=7542} [2021-06-11 01:46:56,279 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1852 predicate places. [2021-06-11 01:46:56,279 INFO L480 AbstractCegarLoop]: Abstraction has has 1905 places, 7542 transitions, 121352 flow [2021-06-11 01:46:56,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:46:56,280 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:46:56,280 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:46:56,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-11 01:46:56,280 INFO L428 AbstractCegarLoop]: === Iteration 30 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:46:56,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:46:56,280 INFO L82 PathProgramCache]: Analyzing trace with hash -480576767, now seen corresponding path program 28 times [2021-06-11 01:46:56,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:46:56,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091087284] [2021-06-11 01:46:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:46:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:46:56,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:46:56,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:46:56,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:46:56,318 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:46:56,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:46:56,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:46:56,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:56,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:56,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:56,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:56,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:56,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:56,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:46:56,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:46:56,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:46:56,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:46:56,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:46:56,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:46:56,504 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:46:56,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:46:56,528 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:46:56,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:46:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:46:56,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091087284] [2021-06-11 01:46:56,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:46:56,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:46:56,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855479381] [2021-06-11 01:46:56,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:46:56,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:46:56,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:46:56,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:46:56,532 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:46:56,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1905 places, 7542 transitions, 121352 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:46:56,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:46:56,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:46:56,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:47:19,973 INFO L129 PetriNetUnfolder]: 10619/18290 cut-off events. [2021-06-11 01:47:19,973 INFO L130 PetriNetUnfolder]: For 991881/991920 co-relation queries the response was YES. [2021-06-11 01:47:20,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192120 conditions, 18290 events. 10619/18290 cut-off events. For 991881/991920 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 142680 event pairs, 429 based on Foata normal form. 25/16976 useless extension candidates. Maximal degree in co-relation 191578. Up to 13251 conditions per place. [2021-06-11 01:47:20,756 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6301 selfloop transitions, 1699 changer transitions 0/8018 dead transitions. [2021-06-11 01:47:20,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1978 places, 8018 transitions, 157052 flow [2021-06-11 01:47:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-06-11 01:47:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-06-11 01:47:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 3970 transitions. [2021-06-11 01:47:20,759 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6542518127883982 [2021-06-11 01:47:20,759 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 3970 transitions. [2021-06-11 01:47:20,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 3970 transitions. [2021-06-11 01:47:20,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:47:20,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 3970 transitions. [2021-06-11 01:47:20,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 53.648648648648646) internal successors, (3970), 74 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:47:20,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 82.0) internal successors, (6150), 75 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:47:20,764 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 82.0) internal successors, (6150), 75 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:47:20,764 INFO L185 Difference]: Start difference. First operand has 1905 places, 7542 transitions, 121352 flow. Second operand 74 states and 3970 transitions. [2021-06-11 01:47:20,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1978 places, 8018 transitions, 157052 flow [2021-06-11 01:47:43,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1961 places, 8018 transitions, 154665 flow, removed 501 selfloop flow, removed 17 redundant places. [2021-06-11 01:47:43,787 INFO L241 Difference]: Finished difference. Result has 1982 places, 7963 transitions, 140907 flow [2021-06-11 01:47:43,791 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=118965, PETRI_DIFFERENCE_MINUEND_PLACES=1888, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=140907, PETRI_PLACES=1982, PETRI_TRANSITIONS=7963} [2021-06-11 01:47:43,791 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1929 predicate places. [2021-06-11 01:47:43,791 INFO L480 AbstractCegarLoop]: Abstraction has has 1982 places, 7963 transitions, 140907 flow [2021-06-11 01:47:43,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:47:43,791 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:47:43,791 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:47:43,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-11 01:47:43,791 INFO L428 AbstractCegarLoop]: === Iteration 31 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:47:43,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:47:43,792 INFO L82 PathProgramCache]: Analyzing trace with hash 962542149, now seen corresponding path program 29 times [2021-06-11 01:47:43,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:47:43,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150602643] [2021-06-11 01:47:43,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:47:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:47:43,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:47:43,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:47:43,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:47:43,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:47:43,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:47:43,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:47:43,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:47:43,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:47:43,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:47:43,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:47:43,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:47:43,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:47:43,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:47:43,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:47:43,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:47:43,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:47:43,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:47:44,020 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:47:44,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:47:44,043 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:47:44,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:47:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:47:44,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150602643] [2021-06-11 01:47:44,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:47:44,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:47:44,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920651202] [2021-06-11 01:47:44,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:47:44,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:47:44,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:47:44,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:47:44,046 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:47:44,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1982 places, 7963 transitions, 140907 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:47:44,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:47:44,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:47:44,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:48:06,630 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2021-06-11 01:48:08,701 INFO L129 PetriNetUnfolder]: 10662/18404 cut-off events. [2021-06-11 01:48:08,701 INFO L130 PetriNetUnfolder]: For 1049191/1049230 co-relation queries the response was YES. [2021-06-11 01:48:09,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197350 conditions, 18404 events. 10662/18404 cut-off events. For 1049191/1049230 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 144251 event pairs, 426 based on Foata normal form. 24/17069 useless extension candidates. Maximal degree in co-relation 196786. Up to 13857 conditions per place. [2021-06-11 01:48:09,442 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6955 selfloop transitions, 1080 changer transitions 0/8053 dead transitions. [2021-06-11 01:48:09,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2021 places, 8053 transitions, 159528 flow [2021-06-11 01:48:09,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-11 01:48:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-06-11 01:48:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2119 transitions. [2021-06-11 01:48:09,445 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6460365853658536 [2021-06-11 01:48:09,445 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2119 transitions. [2021-06-11 01:48:09,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2119 transitions. [2021-06-11 01:48:09,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:48:09,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2119 transitions. [2021-06-11 01:48:09,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 52.975) internal successors, (2119), 40 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:48:09,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 82.0) internal successors, (3362), 41 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:48:09,448 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 82.0) internal successors, (3362), 41 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:48:09,448 INFO L185 Difference]: Start difference. First operand has 1982 places, 7963 transitions, 140907 flow. Second operand 40 states and 2119 transitions. [2021-06-11 01:48:09,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2021 places, 8053 transitions, 159528 flow [2021-06-11 01:48:38,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2019 places, 8053 transitions, 147619 flow, removed 5883 selfloop flow, removed 2 redundant places. [2021-06-11 01:48:38,268 INFO L241 Difference]: Finished difference. Result has 2025 places, 8002 transitions, 132994 flow [2021-06-11 01:48:38,272 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=128998, PETRI_DIFFERENCE_MINUEND_PLACES=1980, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6903, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=132994, PETRI_PLACES=2025, PETRI_TRANSITIONS=8002} [2021-06-11 01:48:38,272 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1972 predicate places. [2021-06-11 01:48:38,272 INFO L480 AbstractCegarLoop]: Abstraction has has 2025 places, 8002 transitions, 132994 flow [2021-06-11 01:48:38,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:48:38,272 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:48:38,272 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:48:38,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-11 01:48:38,272 INFO L428 AbstractCegarLoop]: === Iteration 32 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:48:38,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:48:38,273 INFO L82 PathProgramCache]: Analyzing trace with hash -181623729, now seen corresponding path program 30 times [2021-06-11 01:48:38,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:48:38,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781265471] [2021-06-11 01:48:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:48:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:48:38,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:48:38,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:48:38,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:48:38,301 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:48:38,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:48:38,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:48:38,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:48:38,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:48:38,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:48:38,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:48:38,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:48:38,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:48:38,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:48:38,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:48:38,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:48:38,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:48:38,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:48:38,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:48:38,461 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:48:38,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:48:38,482 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:48:38,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:48:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:48:38,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781265471] [2021-06-11 01:48:38,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:48:38,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 01:48:38,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033431422] [2021-06-11 01:48:38,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-11 01:48:38,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:48:38,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-11 01:48:38,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-11 01:48:38,485 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:48:38,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2025 places, 8002 transitions, 132994 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:48:38,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:48:38,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:48:38,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:49:03,306 INFO L129 PetriNetUnfolder]: 10897/18826 cut-off events. [2021-06-11 01:49:03,306 INFO L130 PetriNetUnfolder]: For 1072829/1072870 co-relation queries the response was YES. [2021-06-11 01:49:04,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197718 conditions, 18826 events. 10897/18826 cut-off events. For 1072829/1072870 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 148359 event pairs, 414 based on Foata normal form. 26/17469 useless extension candidates. Maximal degree in co-relation 197147. Up to 13838 conditions per place. [2021-06-11 01:49:04,174 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6612 selfloop transitions, 1692 changer transitions 0/8322 dead transitions. [2021-06-11 01:49:04,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2079 places, 8322 transitions, 159670 flow [2021-06-11 01:49:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-11 01:49:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-06-11 01:49:04,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 2936 transitions. [2021-06-11 01:49:04,177 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6509977827050998 [2021-06-11 01:49:04,177 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 2936 transitions. [2021-06-11 01:49:04,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 2936 transitions. [2021-06-11 01:49:04,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:49:04,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 2936 transitions. [2021-06-11 01:49:04,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 53.38181818181818) internal successors, (2936), 55 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:49:04,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 82.0) internal successors, (4592), 56 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:49:04,181 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 82.0) internal successors, (4592), 56 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:49:04,181 INFO L185 Difference]: Start difference. First operand has 2025 places, 8002 transitions, 132994 flow. Second operand 55 states and 2936 transitions. [2021-06-11 01:49:04,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2079 places, 8322 transitions, 159670 flow [2021-06-11 01:49:29,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2064 places, 8322 transitions, 157668 flow, removed 561 selfloop flow, removed 15 redundant places. [2021-06-11 01:49:29,902 INFO L241 Difference]: Finished difference. Result has 2078 places, 8241 transitions, 143079 flow [2021-06-11 01:49:29,906 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=130992, PETRI_DIFFERENCE_MINUEND_PLACES=2010, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=143079, PETRI_PLACES=2078, PETRI_TRANSITIONS=8241} [2021-06-11 01:49:29,906 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 2025 predicate places. [2021-06-11 01:49:29,906 INFO L480 AbstractCegarLoop]: Abstraction has has 2078 places, 8241 transitions, 143079 flow [2021-06-11 01:49:29,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:49:29,906 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:49:29,906 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:49:29,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-11 01:49:29,906 INFO L428 AbstractCegarLoop]: === Iteration 33 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:49:29,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:49:29,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1645604727, now seen corresponding path program 31 times [2021-06-11 01:49:29,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:49:29,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216171396] [2021-06-11 01:49:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:49:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:49:29,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:29,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:49:29,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:29,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:49:29,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:29,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:49:29,934 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:49:29,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:49:29,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:29,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:49:29,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:29,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:49:29,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:29,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:49:29,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:29,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:49:29,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:29,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:49:30,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:30,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:49:30,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:30,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:49:30,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:30,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:49:30,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:30,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:49:30,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:30,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:49:30,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:30,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:49:30,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:49:30,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:49:30,101 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:49:30,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:49:30,124 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:49:30,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:49:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:49:30,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216171396] [2021-06-11 01:49:30,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:49:30,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 01:49:30,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027573784] [2021-06-11 01:49:30,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-11 01:49:30,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:49:30,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-11 01:49:30,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-11 01:49:30,128 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:49:30,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2078 places, 8241 transitions, 143079 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:49:30,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:49:30,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:49:30,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:49:56,507 INFO L129 PetriNetUnfolder]: 10935/18920 cut-off events. [2021-06-11 01:49:56,507 INFO L130 PetriNetUnfolder]: For 1123789/1123828 co-relation queries the response was YES. [2021-06-11 01:49:57,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202863 conditions, 18920 events. 10935/18920 cut-off events. For 1123789/1123828 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 149497 event pairs, 419 based on Foata normal form. 24/17549 useless extension candidates. Maximal degree in co-relation 202267. Up to 14053 conditions per place. [2021-06-11 01:49:57,388 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6972 selfloop transitions, 1371 changer transitions 0/8361 dead transitions. [2021-06-11 01:49:57,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2117 places, 8361 transitions, 163949 flow [2021-06-11 01:49:57,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-11 01:49:57,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-06-11 01:49:57,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2140 transitions. [2021-06-11 01:49:57,390 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6524390243902439 [2021-06-11 01:49:57,390 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2140 transitions. [2021-06-11 01:49:57,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2140 transitions. [2021-06-11 01:49:57,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:49:57,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2140 transitions. [2021-06-11 01:49:57,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 53.5) internal successors, (2140), 40 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:49:57,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 82.0) internal successors, (3362), 41 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:49:57,393 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 82.0) internal successors, (3362), 41 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:49:57,393 INFO L185 Difference]: Start difference. First operand has 2078 places, 8241 transitions, 143079 flow. Second operand 40 states and 2140 transitions. [2021-06-11 01:49:57,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2117 places, 8361 transitions, 163949 flow [2021-06-11 01:50:26,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2099 places, 8361 transitions, 159403 flow, removed 1730 selfloop flow, removed 18 redundant places. [2021-06-11 01:50:26,462 INFO L241 Difference]: Finished difference. Result has 2108 places, 8292 transitions, 143647 flow [2021-06-11 01:50:26,465 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138533, PETRI_DIFFERENCE_MINUEND_PLACES=2060, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6908, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=143647, PETRI_PLACES=2108, PETRI_TRANSITIONS=8292} [2021-06-11 01:50:26,465 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 2055 predicate places. [2021-06-11 01:50:26,465 INFO L480 AbstractCegarLoop]: Abstraction has has 2108 places, 8292 transitions, 143647 flow [2021-06-11 01:50:26,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:50:26,465 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:50:26,465 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:50:26,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-11 01:50:26,465 INFO L428 AbstractCegarLoop]: === Iteration 34 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:50:26,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:50:26,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1257673225, now seen corresponding path program 32 times [2021-06-11 01:50:26,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:50:26,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734497136] [2021-06-11 01:50:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:50:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:50:26,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:50:26,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:50:26,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:50:26,494 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:50:26,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:50:26,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:50:26,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:50:26,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:50:26,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:50:26,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:50:26,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:50:26,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:50:26,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:50:26,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:50:26,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:50:26,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:50:26,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:50:26,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:50:26,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:50:26,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:50:26,697 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:50:26,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:50:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:50:26,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734497136] [2021-06-11 01:50:26,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:50:26,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:50:26,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070004558] [2021-06-11 01:50:26,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:50:26,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:50:26,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:50:26,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:50:26,700 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:50:26,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2108 places, 8292 transitions, 143647 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:50:26,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:50:26,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:50:26,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:50:53,850 INFO L129 PetriNetUnfolder]: 11081/19182 cut-off events. [2021-06-11 01:50:53,850 INFO L130 PetriNetUnfolder]: For 1177344/1177385 co-relation queries the response was YES. [2021-06-11 01:50:54,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207943 conditions, 19182 events. 11081/19182 cut-off events. For 1177344/1177385 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 151957 event pairs, 448 based on Foata normal form. 26/17804 useless extension candidates. Maximal degree in co-relation 207337. Up to 14222 conditions per place. [2021-06-11 01:50:54,848 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 7033 selfloop transitions, 1488 changer transitions 0/8539 dead transitions. [2021-06-11 01:50:54,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2154 places, 8539 transitions, 168514 flow [2021-06-11 01:50:54,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-11 01:50:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-06-11 01:50:54,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2502 transitions. [2021-06-11 01:50:54,851 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6491956408925791 [2021-06-11 01:50:54,851 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2502 transitions. [2021-06-11 01:50:54,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2502 transitions. [2021-06-11 01:50:54,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:50:54,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2502 transitions. [2021-06-11 01:50:54,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 53.234042553191486) internal successors, (2502), 47 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:50:54,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:50:54,854 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:50:54,854 INFO L185 Difference]: Start difference. First operand has 2108 places, 8292 transitions, 143647 flow. Second operand 47 states and 2502 transitions. [2021-06-11 01:50:54,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2154 places, 8539 transitions, 168514 flow [2021-06-11 01:51:22,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2135 places, 8539 transitions, 165553 flow, removed 794 selfloop flow, removed 19 redundant places. [2021-06-11 01:51:22,863 INFO L241 Difference]: Finished difference. Result has 2150 places, 8440 transitions, 149216 flow [2021-06-11 01:51:22,866 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=140703, PETRI_DIFFERENCE_MINUEND_PLACES=2089, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6892, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=149216, PETRI_PLACES=2150, PETRI_TRANSITIONS=8440} [2021-06-11 01:51:22,866 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 2097 predicate places. [2021-06-11 01:51:22,866 INFO L480 AbstractCegarLoop]: Abstraction has has 2150 places, 8440 transitions, 149216 flow [2021-06-11 01:51:22,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:51:22,866 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:51:22,866 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:51:22,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-11 01:51:22,867 INFO L428 AbstractCegarLoop]: === Iteration 35 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:51:22,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:51:22,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1827037189, now seen corresponding path program 33 times [2021-06-11 01:51:22,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:51:22,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734775730] [2021-06-11 01:51:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:51:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:51:22,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:22,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:51:22,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:22,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:51:22,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:22,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:51:22,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:22,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:51:22,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:22,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:51:22,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:22,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:51:22,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:22,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:51:22,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:22,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:51:22,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:22,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:51:22,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:22,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:51:22,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:22,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 01:51:23,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:23,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:51:23,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:23,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:51:23,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:23,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:51:23,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:23,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:51:23,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:51:23,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:51:23,079 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:51:23,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:51:23,102 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 01:51:23,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:51:23,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:51:23,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734775730] [2021-06-11 01:51:23,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:51:23,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-11 01:51:23,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473854694] [2021-06-11 01:51:23,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-11 01:51:23,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:51:23,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-11 01:51:23,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-11 01:51:23,106 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:51:23,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2150 places, 8440 transitions, 149216 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:51:23,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:51:23,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:51:23,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:51:52,165 INFO L129 PetriNetUnfolder]: 11624/20045 cut-off events. [2021-06-11 01:51:52,165 INFO L130 PetriNetUnfolder]: For 1357718/1357728 co-relation queries the response was YES. [2021-06-11 01:51:53,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229475 conditions, 20045 events. 11624/20045 cut-off events. For 1357718/1357728 co-relation queries the response was YES. Maximal size of possible extension queue 1056. Compared 159154 event pairs, 427 based on Foata normal form. 6/18611 useless extension candidates. Maximal degree in co-relation 228841. Up to 14039 conditions per place. [2021-06-11 01:51:53,329 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 6408 selfloop transitions, 2608 changer transitions 0/9034 dead transitions. [2021-06-11 01:51:53,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2203 places, 9034 transitions, 188424 flow [2021-06-11 01:51:53,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-11 01:51:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-06-11 01:51:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 2852 transitions. [2021-06-11 01:51:53,331 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6440831074977417 [2021-06-11 01:51:53,332 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 2852 transitions. [2021-06-11 01:51:53,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 2852 transitions. [2021-06-11 01:51:53,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:51:53,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 2852 transitions. [2021-06-11 01:51:53,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 52.81481481481482) internal successors, (2852), 54 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:51:53,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 82.0) internal successors, (4510), 55 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:51:53,335 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 82.0) internal successors, (4510), 55 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:51:53,335 INFO L185 Difference]: Start difference. First operand has 2150 places, 8440 transitions, 149216 flow. Second operand 54 states and 2852 transitions. [2021-06-11 01:51:53,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2203 places, 9034 transitions, 188424 flow [2021-06-11 01:52:27,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2186 places, 9034 transitions, 184346 flow, removed 1419 selfloop flow, removed 17 redundant places. [2021-06-11 01:52:27,992 INFO L241 Difference]: Finished difference. Result has 2209 places, 8916 transitions, 169469 flow [2021-06-11 01:52:27,994 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=145841, PETRI_DIFFERENCE_MINUEND_PLACES=2133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=169469, PETRI_PLACES=2209, PETRI_TRANSITIONS=8916} [2021-06-11 01:52:27,995 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 2156 predicate places. [2021-06-11 01:52:27,995 INFO L480 AbstractCegarLoop]: Abstraction has has 2209 places, 8916 transitions, 169469 flow [2021-06-11 01:52:27,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:52:27,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 01:52:27,995 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 01:52:27,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-11 01:52:27,995 INFO L428 AbstractCegarLoop]: === Iteration 36 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 01:52:27,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 01:52:27,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1885359763, now seen corresponding path program 34 times [2021-06-11 01:52:27,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 01:52:27,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250423386] [2021-06-11 01:52:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 01:52:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 01:52:28,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 01:52:28,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:52:28,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:52:28,025 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-11 01:52:28,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 01:52:28,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:52:28,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:52:28,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:52:28,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:52:28,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:52:28,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:52:28,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:52:28,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:52:28,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:52:28,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:52:28,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:52:28,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 01:52:28,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 01:52:28,215 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 01:52:28,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 01:52:28,237 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 01:52:28,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 01:52:28,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 01:52:28,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250423386] [2021-06-11 01:52:28,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 01:52:28,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 01:52:28,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818440461] [2021-06-11 01:52:28,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-11 01:52:28,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 01:52:28,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-11 01:52:28,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-11 01:52:28,241 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 82 [2021-06-11 01:52:28,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2209 places, 8916 transitions, 169469 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:52:28,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 01:52:28,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 82 [2021-06-11 01:52:28,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 01:53:04,509 INFO L129 PetriNetUnfolder]: 12140/21036 cut-off events. [2021-06-11 01:53:04,509 INFO L130 PetriNetUnfolder]: For 1667602/1667641 co-relation queries the response was YES. [2021-06-11 01:53:05,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 255919 conditions, 21036 events. 12140/21036 cut-off events. For 1667602/1667641 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 169436 event pairs, 418 based on Foata normal form. 24/19520 useless extension candidates. Maximal degree in co-relation 255261. Up to 14954 conditions per place. [2021-06-11 01:53:05,686 INFO L132 encePairwiseOnDemand]: 62/82 looper letters, 7310 selfloop transitions, 2193 changer transitions 0/9521 dead transitions. [2021-06-11 01:53:05,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2324 places, 9521 transitions, 215427 flow [2021-06-11 01:53:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-06-11 01:53:05,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-06-11 01:53:05,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 6099 transitions. [2021-06-11 01:53:05,690 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6411900756938604 [2021-06-11 01:53:05,691 INFO L72 ComplementDD]: Start complementDD. Operand 116 states and 6099 transitions. [2021-06-11 01:53:05,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 6099 transitions. [2021-06-11 01:53:05,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 01:53:05,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 116 states and 6099 transitions. [2021-06-11 01:53:05,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 117 states, 116 states have (on average 52.577586206896555) internal successors, (6099), 116 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:53:05,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 117 states, 117 states have (on average 82.0) internal successors, (9594), 117 states have internal predecessors, (9594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:53:05,698 INFO L81 ComplementDD]: Finished complementDD. Result has 117 states, 117 states have (on average 82.0) internal successors, (9594), 117 states have internal predecessors, (9594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 01:53:05,699 INFO L185 Difference]: Start difference. First operand has 2209 places, 8916 transitions, 169469 flow. Second operand 116 states and 6099 transitions. [2021-06-11 01:53:05,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2324 places, 9521 transitions, 215427 flow Received shutdown request... [2021-06-11 01:53:48,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-11 01:53:48,616 WARN L545 AbstractCegarLoop]: Verification canceled [2021-06-11 01:53:48,618 WARN L224 ceAbstractionStarter]: Timeout [2021-06-11 01:53:48,619 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 01:53:48 BasicIcfg [2021-06-11 01:53:48,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 01:53:48,619 INFO L168 Benchmark]: Toolchain (without parser) took 817611.89 ms. Allocated memory was 394.3 MB in the beginning and 11.3 GB in the end (delta: 10.9 GB). Free memory was 374.0 MB in the beginning and 3.4 GB in the end (delta: -3.0 GB). Peak memory consumption was 8.0 GB. Max. memory is 16.0 GB. [2021-06-11 01:53:48,619 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 394.3 MB. Free memory was 375.2 MB in the beginning and 375.2 MB in the end (delta: 76.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 01:53:48,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.00 ms. Allocated memory is still 394.3 MB. Free memory was 373.9 MB in the beginning and 372.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 01:53:48,619 INFO L168 Benchmark]: Boogie Preprocessor took 17.02 ms. Allocated memory is still 394.3 MB. Free memory was 372.4 MB in the beginning and 371.5 MB in the end (delta: 963.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 01:53:48,619 INFO L168 Benchmark]: RCFGBuilder took 161.09 ms. Allocated memory is still 394.3 MB. Free memory was 371.4 MB in the beginning and 357.9 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-11 01:53:48,619 INFO L168 Benchmark]: TraceAbstraction took 817412.21 ms. Allocated memory was 394.3 MB in the beginning and 11.3 GB in the end (delta: 10.9 GB). Free memory was 357.4 MB in the beginning and 3.4 GB in the end (delta: -3.0 GB). Peak memory consumption was 7.9 GB. Max. memory is 16.0 GB. [2021-06-11 01:53:48,620 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 0.10 ms. Allocated memory is still 394.3 MB. Free memory was 375.2 MB in the beginning and 375.2 MB in the end (delta: 76.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.00 ms. Allocated memory is still 394.3 MB. Free memory was 373.9 MB in the beginning and 372.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.02 ms. Allocated memory is still 394.3 MB. Free memory was 372.4 MB in the beginning and 371.5 MB in the end (delta: 963.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 161.09 ms. Allocated memory is still 394.3 MB. Free memory was 371.4 MB in the beginning and 357.9 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 817412.21 ms. Allocated memory was 394.3 MB in the beginning and 11.3 GB in the end (delta: 10.9 GB). Free memory was 357.4 MB in the beginning and 3.4 GB in the end (delta: -3.0 GB). Peak memory consumption was 7.9 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 400.1ms, 66 PlacesBefore, 53 PlacesAfterwards, 51 TransitionsBefore, 38 TransitionsAfterwards, 1336 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 1358 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 710, positive: 672, positive conditional: 0, positive unconditional: 672, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 631, positive: 604, positive conditional: 0, positive unconditional: 604, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 631, positive: 604, positive conditional: 0, positive unconditional: 604, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 631, positive: 600, positive conditional: 0, positive unconditional: 600, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 116, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 710, positive: 68, positive conditional: 0, positive unconditional: 68, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 631, unknown conditional: 0, unknown unconditional: 631] , Statistics on independence cache: Total cache size (in pairs): 778, Positive cache size: 751, Positive conditional cache size: 0, Positive unconditional cache size: 751, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 95). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 817289.2ms, OverallIterations: 36, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 808706.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 485.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1787 SDtfs, 4394 SDslu, 2355 SDs, 0 SdLazy, 74957 SolverSat, 3220 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25071.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2196 GetRequests, 41 SyntacticMatches, 33 SemanticMatches, 2122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46718 ImplicationChecksByTransitivity, 47116.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=169469occurred in iteration=35, InterpolantAutomatonStates: 1902, 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: 32.1ms SsaConstructionTime, 166.1ms SatisfiabilityAnalysisTime, 7699.2ms InterpolantComputationTime, 1224 NumberOfCodeBlocks, 1224 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1188 ConstructedInterpolants, 0 QuantifiedInterpolants, 14991 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 36 InterpolantComputations, 36 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