/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 03:36:05,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 03:36:05,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 03:36:05,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-26 03:36:05,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 03:36:05,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 03:36:05,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 03:36:05,816 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 03:36:05,855 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 03:36:05,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 03:36:05,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 03:36:05,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 03:36:05,860 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 03:36:05,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 03:36:05,860 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 03:36:05,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 03:36:05,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 03:36:05,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 03:36:05,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 03:36:05,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 03:36:05,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 03:36:05,862 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 03:36:05,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 03:36:05,862 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 03:36:05,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 03:36:05,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 03:36:05,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 03:36:05,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 03:36:05,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 03:36:05,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:36:05,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 03:36:05,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 03:36:05,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 03:36:05,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 03:36:05,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 03:36:05,864 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 03:36:05,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 03:36:05,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 03:36:05,864 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 03:36:06,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 03:36:06,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 03:36:06,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 03:36:06,191 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 03:36:06,196 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 03:36:06,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl [2021-03-26 03:36:06,197 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl' [2021-03-26 03:36:06,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 03:36:06,250 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 03:36:06,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 03:36:06,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 03:36:06,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 03:36:06,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:36:06" (1/1) ... [2021-03-26 03:36:06,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:36:06" (1/1) ... [2021-03-26 03:36:06,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 03:36:06,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 03:36:06,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 03:36:06,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 03:36:06,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:36:06" (1/1) ... [2021-03-26 03:36:06,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:36:06" (1/1) ... [2021-03-26 03:36:06,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:36:06" (1/1) ... [2021-03-26 03:36:06,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:36:06" (1/1) ... [2021-03-26 03:36:06,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:36:06" (1/1) ... [2021-03-26 03:36:06,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:36:06" (1/1) ... [2021-03-26 03:36:06,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:36:06" (1/1) ... [2021-03-26 03:36:06,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 03:36:06,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 03:36:06,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 03:36:06,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 03:36:06,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:36:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:36:06,362 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-26 03:36:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-26 03:36:06,362 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-26 03:36:06,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-26 03:36:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-26 03:36:06,363 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-26 03:36:06,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-26 03:36:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-26 03:36:06,363 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-26 03:36:06,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-26 03:36:06,364 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-26 03:36:06,364 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-26 03:36:06,364 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-26 03:36:06,364 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-26 03:36:06,364 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-26 03:36:06,364 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-26 03:36:06,364 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-26 03:36:06,365 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-26 03:36:06,365 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 03:36:06,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 03:36:06,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 03:36:06,365 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-26 03:36:06,365 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-26 03:36:06,365 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-26 03:36:06,366 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-26 03:36:06,366 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-26 03:36:06,366 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-26 03:36:06,366 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-26 03:36:06,366 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-26 03:36:06,366 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-26 03:36:06,366 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-26 03:36:06,367 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-26 03:36:06,367 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-26 03:36:06,367 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-26 03:36:06,367 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-26 03:36:06,367 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-26 03:36:06,368 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 03:36:06,576 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 03:36:06,576 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 03:36:06,577 INFO L202 PluginConnector]: Adding new model example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:36:06 BoogieIcfgContainer [2021-03-26 03:36:06,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 03:36:06,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 03:36:06,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 03:36:06,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 03:36:06,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:36:06" (1/2) ... [2021-03-26 03:36:06,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12bc4ca5 and model type example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:36:06, skipping insertion in model container [2021-03-26 03:36:06,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:36:06" (2/2) ... [2021-03-26 03:36:06,584 INFO L111 eAbstractionObserver]: Analyzing ICFG example_11.bpl [2021-03-26 03:36:06,588 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 03:36:06,592 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 03:36:06,592 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 03:36:06,860 INFO L149 ThreadInstanceAdder]: Constructed 121 joinOtherThreadTransitions. [2021-03-26 03:36:06,878 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-03-26 03:36:06,911 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:36:06,911 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:36:06,911 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:36:06,911 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:36:06,911 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:36:06,911 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:36:06,912 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:36:06,912 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:36:06,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 168 transitions, 754 flow [2021-03-26 03:36:08,180 INFO L129 PetriNetUnfolder]: 9217/11300 cut-off events. [2021-03-26 03:36:08,181 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2021-03-26 03:36:08,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22598 conditions, 11300 events. 9217/11300 cut-off events. For 11264/11264 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 45968 event pairs, 0 based on Foata normal form. 0/11299 useless extension candidates. Maximal degree in co-relation 10292. Up to 2772 conditions per place. [2021-03-26 03:36:08,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 168 transitions, 754 flow [2021-03-26 03:36:08,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 155 transitions, 706 flow [2021-03-26 03:36:08,360 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:08,374 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 155 transitions, 706 flow [2021-03-26 03:36:08,379 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 155 transitions, 706 flow [2021-03-26 03:36:08,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 155 transitions, 706 flow [2021-03-26 03:36:09,305 INFO L129 PetriNetUnfolder]: 9217/11298 cut-off events. [2021-03-26 03:36:09,306 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2021-03-26 03:36:09,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22596 conditions, 11298 events. 9217/11298 cut-off events. For 11264/11264 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 44505 event pairs, 0 based on Foata normal form. 0/11298 useless extension candidates. Maximal degree in co-relation 10292. Up to 2772 conditions per place. [2021-03-26 03:36:09,592 INFO L142 LiptonReduction]: Number of co-enabled transitions 5060 [2021-03-26 03:36:09,836 INFO L154 LiptonReduction]: Checked pairs total: 1375 [2021-03-26 03:36:09,837 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-26 03:36:09,839 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1480 [2021-03-26 03:36:10,594 INFO L129 PetriNetUnfolder]: 9217/11286 cut-off events. [2021-03-26 03:36:10,595 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2021-03-26 03:36:10,595 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:10,596 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] [2021-03-26 03:36:10,596 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:10,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:10,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1169348747, now seen corresponding path program 1 times [2021-03-26 03:36:10,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:10,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775460659] [2021-03-26 03:36:10,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:10,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:10,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:10,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:10,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:36:10,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:10,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:10,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775460659] [2021-03-26 03:36:10,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:10,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:36:10,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163470162] [2021-03-26 03:36:10,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:36:10,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:10,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:36:10,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:36:10,804 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 03:36:10,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 144 transitions, 684 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:10,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:10,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 03:36:10,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:11,732 INFO L129 PetriNetUnfolder]: 6657/8341 cut-off events. [2021-03-26 03:36:11,732 INFO L130 PetriNetUnfolder]: For 10753/10753 co-relation queries the response was YES. [2021-03-26 03:36:11,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17333 conditions, 8341 events. 6657/8341 cut-off events. For 10753/10753 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 36601 event pairs, 0 based on Foata normal form. 386/8727 useless extension candidates. Maximal degree in co-relation 10266. Up to 2310 conditions per place. [2021-03-26 03:36:11,800 INFO L132 encePairwiseOnDemand]: 173/179 looper letters, 6 selfloop transitions, 1 changer transitions 0/139 dead transitions. [2021-03-26 03:36:11,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 139 transitions, 673 flow [2021-03-26 03:36:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:36:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:36:11,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2021-03-26 03:36:11,813 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2021-03-26 03:36:11,813 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2021-03-26 03:36:11,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2021-03-26 03:36:11,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:11,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2021-03-26 03:36:11,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:11,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:11,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:11,827 INFO L185 Difference]: Start difference. First operand has 68 places, 144 transitions, 684 flow. Second operand 3 states and 513 transitions. [2021-03-26 03:36:11,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 139 transitions, 673 flow [2021-03-26 03:36:11,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 139 transitions, 419 flow, removed 0 selfloop flow, removed 22 redundant places. [2021-03-26 03:36:11,904 INFO L241 Difference]: Finished difference. Result has 48 places, 139 transitions, 407 flow [2021-03-26 03:36:11,905 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=407, PETRI_PLACES=48, PETRI_TRANSITIONS=139} [2021-03-26 03:36:11,906 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -20 predicate places. [2021-03-26 03:36:11,906 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:11,907 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 139 transitions, 407 flow [2021-03-26 03:36:11,907 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 139 transitions, 407 flow [2021-03-26 03:36:11,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 139 transitions, 407 flow [2021-03-26 03:36:12,263 INFO L129 PetriNetUnfolder]: 6657/8341 cut-off events. [2021-03-26 03:36:12,263 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:12,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8355 conditions, 8341 events. 6657/8341 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 33436 event pairs, 0 based on Foata normal form. 0/8341 useless extension candidates. Maximal degree in co-relation 8340. Up to 2310 conditions per place. [2021-03-26 03:36:12,319 INFO L142 LiptonReduction]: Number of co-enabled transitions 2320 [2021-03-26 03:36:12,344 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:12,344 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:12,345 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 439 [2021-03-26 03:36:12,346 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 139 transitions, 407 flow [2021-03-26 03:36:12,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:12,347 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:12,347 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] [2021-03-26 03:36:12,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 03:36:12,348 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:12,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:12,348 INFO L82 PathProgramCache]: Analyzing trace with hash 932634075, now seen corresponding path program 1 times [2021-03-26 03:36:12,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:12,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991185631] [2021-03-26 03:36:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:12,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:12,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:12,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:12,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:36:12,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:12,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:12,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:12,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991185631] [2021-03-26 03:36:12,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:12,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:36:12,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871690415] [2021-03-26 03:36:12,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:36:12,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:12,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:36:12,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:36:12,376 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 03:36:12,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 139 transitions, 407 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:12,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:12,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 03:36:12,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:12,656 INFO L129 PetriNetUnfolder]: 3930/5106 cut-off events. [2021-03-26 03:36:12,656 INFO L130 PetriNetUnfolder]: For 768/768 co-relation queries the response was YES. [2021-03-26 03:36:12,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5508 conditions, 5106 events. 3930/5106 cut-off events. For 768/768 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 24566 event pairs, 0 based on Foata normal form. 382/5488 useless extension candidates. Maximal degree in co-relation 5492. Up to 1320 conditions per place. [2021-03-26 03:36:12,682 INFO L132 encePairwiseOnDemand]: 172/179 looper letters, 5 selfloop transitions, 1 changer transitions 0/133 dead transitions. [2021-03-26 03:36:12,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 133 transitions, 401 flow [2021-03-26 03:36:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:36:12,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:36:12,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2021-03-26 03:36:12,684 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2021-03-26 03:36:12,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2021-03-26 03:36:12,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2021-03-26 03:36:12,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:12,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2021-03-26 03:36:12,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:12,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:12,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:12,688 INFO L185 Difference]: Start difference. First operand has 48 places, 139 transitions, 407 flow. Second operand 3 states and 513 transitions. [2021-03-26 03:36:12,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 133 transitions, 401 flow [2021-03-26 03:36:12,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 133 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:36:12,692 INFO L241 Difference]: Finished difference. Result has 49 places, 133 transitions, 390 flow [2021-03-26 03:36:12,692 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=390, PETRI_PLACES=49, PETRI_TRANSITIONS=133} [2021-03-26 03:36:12,693 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -19 predicate places. [2021-03-26 03:36:12,693 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:12,693 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 133 transitions, 390 flow [2021-03-26 03:36:12,694 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 133 transitions, 390 flow [2021-03-26 03:36:12,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 133 transitions, 390 flow [2021-03-26 03:36:12,903 INFO L129 PetriNetUnfolder]: 3930/5106 cut-off events. [2021-03-26 03:36:12,903 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:12,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5121 conditions, 5106 events. 3930/5106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 20798 event pairs, 0 based on Foata normal form. 0/5106 useless extension candidates. Maximal degree in co-relation 5106. Up to 1320 conditions per place. [2021-03-26 03:36:12,944 INFO L142 LiptonReduction]: Number of co-enabled transitions 2200 [2021-03-26 03:36:12,955 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:12,955 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:12,955 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 262 [2021-03-26 03:36:12,957 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 133 transitions, 390 flow [2021-03-26 03:36:12,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:12,958 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:12,958 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] [2021-03-26 03:36:12,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 03:36:12,958 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:12,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:12,959 INFO L82 PathProgramCache]: Analyzing trace with hash 961797627, now seen corresponding path program 1 times [2021-03-26 03:36:12,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:12,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15540369] [2021-03-26 03:36:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:12,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:12,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:12,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:12,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:36:12,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:12,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:12,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15540369] [2021-03-26 03:36:12,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:12,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:36:12,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103326880] [2021-03-26 03:36:12,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:36:12,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:12,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:36:12,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:36:12,985 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 03:36:12,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 133 transitions, 390 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:12,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:12,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 03:36:12,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:13,114 INFO L129 PetriNetUnfolder]: 1794/2471 cut-off events. [2021-03-26 03:36:13,114 INFO L130 PetriNetUnfolder]: For 479/479 co-relation queries the response was YES. [2021-03-26 03:36:13,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2664 conditions, 2471 events. 1794/2471 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11626 event pairs, 0 based on Foata normal form. 303/2774 useless extension candidates. Maximal degree in co-relation 2648. Up to 495 conditions per place. [2021-03-26 03:36:13,128 INFO L132 encePairwiseOnDemand]: 171/179 looper letters, 4 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2021-03-26 03:36:13,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 126 transitions, 379 flow [2021-03-26 03:36:13,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:36:13,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:36:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2021-03-26 03:36:13,130 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2021-03-26 03:36:13,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2021-03-26 03:36:13,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2021-03-26 03:36:13,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:13,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2021-03-26 03:36:13,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,134 INFO L185 Difference]: Start difference. First operand has 49 places, 133 transitions, 390 flow. Second operand 3 states and 513 transitions. [2021-03-26 03:36:13,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 126 transitions, 379 flow [2021-03-26 03:36:13,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 126 transitions, 378 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:36:13,137 INFO L241 Difference]: Finished difference. Result has 50 places, 126 transitions, 370 flow [2021-03-26 03:36:13,138 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=50, PETRI_TRANSITIONS=126} [2021-03-26 03:36:13,138 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -18 predicate places. [2021-03-26 03:36:13,138 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:13,138 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 126 transitions, 370 flow [2021-03-26 03:36:13,138 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 126 transitions, 370 flow [2021-03-26 03:36:13,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 126 transitions, 370 flow [2021-03-26 03:36:13,247 INFO L129 PetriNetUnfolder]: 1794/2471 cut-off events. [2021-03-26 03:36:13,248 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:13,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 2471 events. 1794/2471 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10002 event pairs, 0 based on Foata normal form. 0/2471 useless extension candidates. Maximal degree in co-relation 2472. Up to 495 conditions per place. [2021-03-26 03:36:13,260 INFO L142 LiptonReduction]: Number of co-enabled transitions 2060 [2021-03-26 03:36:13,269 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:13,269 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:13,269 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 131 [2021-03-26 03:36:13,271 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 126 transitions, 370 flow [2021-03-26 03:36:13,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,271 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:13,272 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] [2021-03-26 03:36:13,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 03:36:13,272 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:13,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:13,272 INFO L82 PathProgramCache]: Analyzing trace with hash -171765885, now seen corresponding path program 1 times [2021-03-26 03:36:13,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:13,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434823973] [2021-03-26 03:36:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:13,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:13,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:36:13,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:13,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434823973] [2021-03-26 03:36:13,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:13,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:36:13,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277373576] [2021-03-26 03:36:13,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:36:13,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:13,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:36:13,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:36:13,332 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 03:36:13,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 126 transitions, 370 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:13,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 03:36:13,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:13,446 INFO L129 PetriNetUnfolder]: 1640/2288 cut-off events. [2021-03-26 03:36:13,447 INFO L130 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2021-03-26 03:36:13,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 2288 events. 1640/2288 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10574 event pairs, 0 based on Foata normal form. 29/2317 useless extension candidates. Maximal degree in co-relation 2500. Up to 495 conditions per place. [2021-03-26 03:36:13,460 INFO L132 encePairwiseOnDemand]: 175/179 looper letters, 8 selfloop transitions, 1 changer transitions 0/123 dead transitions. [2021-03-26 03:36:13,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 123 transitions, 379 flow [2021-03-26 03:36:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:36:13,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:36:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2021-03-26 03:36:13,462 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2021-03-26 03:36:13,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2021-03-26 03:36:13,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2021-03-26 03:36:13,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:13,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2021-03-26 03:36:13,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,465 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,465 INFO L185 Difference]: Start difference. First operand has 50 places, 126 transitions, 370 flow. Second operand 3 states and 513 transitions. [2021-03-26 03:36:13,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 123 transitions, 379 flow [2021-03-26 03:36:13,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 123 transitions, 378 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:36:13,468 INFO L241 Difference]: Finished difference. Result has 51 places, 123 transitions, 362 flow [2021-03-26 03:36:13,469 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=51, PETRI_TRANSITIONS=123} [2021-03-26 03:36:13,469 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -17 predicate places. [2021-03-26 03:36:13,469 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:13,469 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 123 transitions, 362 flow [2021-03-26 03:36:13,469 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 123 transitions, 362 flow [2021-03-26 03:36:13,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 123 transitions, 362 flow [2021-03-26 03:36:13,546 INFO L129 PetriNetUnfolder]: 1640/2288 cut-off events. [2021-03-26 03:36:13,547 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:13,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2305 conditions, 2288 events. 1640/2288 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9375 event pairs, 0 based on Foata normal form. 0/2288 useless extension candidates. Maximal degree in co-relation 2294. Up to 495 conditions per place. [2021-03-26 03:36:13,561 INFO L142 LiptonReduction]: Number of co-enabled transitions 2000 [2021-03-26 03:36:13,569 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:13,569 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:13,569 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 100 [2021-03-26 03:36:13,571 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 123 transitions, 362 flow [2021-03-26 03:36:13,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,572 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:13,572 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] [2021-03-26 03:36:13,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 03:36:13,572 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:13,573 INFO L82 PathProgramCache]: Analyzing trace with hash -387771049, now seen corresponding path program 1 times [2021-03-26 03:36:13,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:13,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674292757] [2021-03-26 03:36:13,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:13,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:13,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:36:13,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:13,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674292757] [2021-03-26 03:36:13,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:13,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:36:13,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439722133] [2021-03-26 03:36:13,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:36:13,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:13,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:36:13,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:36:13,618 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 03:36:13,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 123 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:13,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 03:36:13,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:13,661 INFO L129 PetriNetUnfolder]: 429/680 cut-off events. [2021-03-26 03:36:13,661 INFO L130 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2021-03-26 03:36:13,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 680 events. 429/680 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2831 event pairs, 0 based on Foata normal form. 207/887 useless extension candidates. Maximal degree in co-relation 698. Up to 108 conditions per place. [2021-03-26 03:36:13,664 INFO L132 encePairwiseOnDemand]: 169/179 looper letters, 2 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2021-03-26 03:36:13,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 114 transitions, 341 flow [2021-03-26 03:36:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:36:13,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:36:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2021-03-26 03:36:13,666 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2021-03-26 03:36:13,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2021-03-26 03:36:13,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2021-03-26 03:36:13,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:13,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2021-03-26 03:36:13,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,670 INFO L185 Difference]: Start difference. First operand has 51 places, 123 transitions, 362 flow. Second operand 3 states and 513 transitions. [2021-03-26 03:36:13,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 114 transitions, 341 flow [2021-03-26 03:36:13,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 114 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:36:13,676 INFO L241 Difference]: Finished difference. Result has 52 places, 114 transitions, 336 flow [2021-03-26 03:36:13,676 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=52, PETRI_TRANSITIONS=114} [2021-03-26 03:36:13,676 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -16 predicate places. [2021-03-26 03:36:13,676 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:13,676 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 114 transitions, 336 flow [2021-03-26 03:36:13,677 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 114 transitions, 336 flow [2021-03-26 03:36:13,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 114 transitions, 336 flow [2021-03-26 03:36:13,700 INFO L129 PetriNetUnfolder]: 429/680 cut-off events. [2021-03-26 03:36:13,700 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:13,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 680 events. 429/680 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2470 event pairs, 0 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 687. Up to 108 conditions per place. [2021-03-26 03:36:13,704 INFO L142 LiptonReduction]: Number of co-enabled transitions 1640 [2021-03-26 03:36:13,710 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:13,710 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:13,710 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-26 03:36:13,713 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 114 transitions, 336 flow [2021-03-26 03:36:13,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,714 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:13,715 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:36:13,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 03:36:13,716 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:13,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:13,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1715683835, now seen corresponding path program 1 times [2021-03-26 03:36:13,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:13,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997064197] [2021-03-26 03:36:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:13,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:13,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:36:13,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:13,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:13,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997064197] [2021-03-26 03:36:13,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:13,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:36:13,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917922812] [2021-03-26 03:36:13,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:36:13,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:13,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:36:13,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:36:13,759 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 03:36:13,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 114 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:13,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 03:36:13,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:13,780 INFO L129 PetriNetUnfolder]: 95/191 cut-off events. [2021-03-26 03:36:13,781 INFO L130 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2021-03-26 03:36:13,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 191 events. 95/191 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 638 event pairs, 0 based on Foata normal form. 72/263 useless extension candidates. Maximal degree in co-relation 200. Up to 30 conditions per place. [2021-03-26 03:36:13,782 INFO L132 encePairwiseOnDemand]: 168/179 looper letters, 1 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2021-03-26 03:36:13,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 85 transitions, 253 flow [2021-03-26 03:36:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:36:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:36:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2021-03-26 03:36:13,783 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2021-03-26 03:36:13,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2021-03-26 03:36:13,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2021-03-26 03:36:13,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:13,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2021-03-26 03:36:13,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,786 INFO L185 Difference]: Start difference. First operand has 52 places, 114 transitions, 336 flow. Second operand 3 states and 513 transitions. [2021-03-26 03:36:13,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 85 transitions, 253 flow [2021-03-26 03:36:13,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 85 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:36:13,788 INFO L241 Difference]: Finished difference. Result has 53 places, 85 transitions, 250 flow [2021-03-26 03:36:13,788 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=53, PETRI_TRANSITIONS=85} [2021-03-26 03:36:13,789 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -15 predicate places. [2021-03-26 03:36:13,789 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:13,789 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 85 transitions, 250 flow [2021-03-26 03:36:13,789 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 85 transitions, 250 flow [2021-03-26 03:36:13,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 85 transitions, 250 flow [2021-03-26 03:36:13,797 INFO L129 PetriNetUnfolder]: 95/191 cut-off events. [2021-03-26 03:36:13,798 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:13,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 191 events. 95/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 540 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 199. Up to 30 conditions per place. [2021-03-26 03:36:13,799 INFO L142 LiptonReduction]: Number of co-enabled transitions 1022 [2021-03-26 03:36:13,802 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:13,802 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:13,802 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-26 03:36:13,806 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 85 transitions, 250 flow [2021-03-26 03:36:13,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,807 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:13,807 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] [2021-03-26 03:36:13,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 03:36:13,807 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:13,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:13,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1910450227, now seen corresponding path program 1 times [2021-03-26 03:36:13,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:13,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783293327] [2021-03-26 03:36:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:13,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:13,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:36:13,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:13,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:13,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783293327] [2021-03-26 03:36:13,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:13,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:36:13,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628378127] [2021-03-26 03:36:13,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:36:13,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:13,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:36:13,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:36:13,852 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 03:36:13,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 85 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:13,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 03:36:13,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:13,867 INFO L129 PetriNetUnfolder]: 21/70 cut-off events. [2021-03-26 03:36:13,867 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-26 03:36:13,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 70 events. 21/70 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 0 based on Foata normal form. 23/93 useless extension candidates. Maximal degree in co-relation 80. Up to 12 conditions per place. [2021-03-26 03:36:13,868 INFO L132 encePairwiseOnDemand]: 170/179 looper letters, 1 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2021-03-26 03:36:13,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 152 flow [2021-03-26 03:36:13,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:36:13,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:36:13,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2021-03-26 03:36:13,870 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9515828677839852 [2021-03-26 03:36:13,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2021-03-26 03:36:13,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2021-03-26 03:36:13,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:13,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2021-03-26 03:36:13,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,873 INFO L185 Difference]: Start difference. First operand has 53 places, 85 transitions, 250 flow. Second operand 3 states and 511 transitions. [2021-03-26 03:36:13,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 152 flow [2021-03-26 03:36:13,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:36:13,875 INFO L241 Difference]: Finished difference. Result has 54 places, 51 transitions, 149 flow [2021-03-26 03:36:13,875 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2021-03-26 03:36:13,875 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2021-03-26 03:36:13,875 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:13,875 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 51 transitions, 149 flow [2021-03-26 03:36:13,875 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 51 transitions, 149 flow [2021-03-26 03:36:13,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 51 transitions, 149 flow [2021-03-26 03:36:13,880 INFO L129 PetriNetUnfolder]: 21/70 cut-off events. [2021-03-26 03:36:13,880 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:13,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 70 events. 21/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 79. Up to 12 conditions per place. [2021-03-26 03:36:13,881 INFO L142 LiptonReduction]: Number of co-enabled transitions 626 [2021-03-26 03:36:13,882 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:13,882 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:13,882 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 03:36:13,886 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 149 flow [2021-03-26 03:36:13,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,887 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:13,887 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] [2021-03-26 03:36:13,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 03:36:13,888 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:13,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:13,889 INFO L82 PathProgramCache]: Analyzing trace with hash -387132387, now seen corresponding path program 1 times [2021-03-26 03:36:13,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:13,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93866289] [2021-03-26 03:36:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:13,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:13,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:36:13,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:13,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:13,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93866289] [2021-03-26 03:36:13,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:13,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:36:13,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683523814] [2021-03-26 03:36:13,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:36:13,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:13,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:36:13,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:36:13,929 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 03:36:13,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:13,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 03:36:13,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:13,938 INFO L129 PetriNetUnfolder]: 12/57 cut-off events. [2021-03-26 03:36:13,938 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-26 03:36:13,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 57 events. 12/57 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 4/61 useless extension candidates. Maximal degree in co-relation 71. Up to 8 conditions per place. [2021-03-26 03:36:13,939 INFO L132 encePairwiseOnDemand]: 176/179 looper letters, 3 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2021-03-26 03:36:13,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 151 flow [2021-03-26 03:36:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:36:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:36:13,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2021-03-26 03:36:13,941 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9441340782122905 [2021-03-26 03:36:13,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2021-03-26 03:36:13,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2021-03-26 03:36:13,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:13,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2021-03-26 03:36:13,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,944 INFO L185 Difference]: Start difference. First operand has 54 places, 51 transitions, 149 flow. Second operand 3 states and 507 transitions. [2021-03-26 03:36:13,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 151 flow [2021-03-26 03:36:13,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:36:13,945 INFO L241 Difference]: Finished difference. Result has 55 places, 49 transitions, 144 flow [2021-03-26 03:36:13,945 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2021-03-26 03:36:13,946 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2021-03-26 03:36:13,946 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:13,946 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 49 transitions, 144 flow [2021-03-26 03:36:13,946 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 49 transitions, 144 flow [2021-03-26 03:36:13,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 144 flow [2021-03-26 03:36:13,950 INFO L129 PetriNetUnfolder]: 12/57 cut-off events. [2021-03-26 03:36:13,950 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:13,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 57 events. 12/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 69. Up to 8 conditions per place. [2021-03-26 03:36:13,951 INFO L142 LiptonReduction]: Number of co-enabled transitions 574 [2021-03-26 03:36:13,952 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:13,952 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:13,952 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 03:36:13,954 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 144 flow [2021-03-26 03:36:13,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:13,954 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:13,954 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] [2021-03-26 03:36:13,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 03:36:13,955 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:13,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:13,955 INFO L82 PathProgramCache]: Analyzing trace with hash 294836189, now seen corresponding path program 1 times [2021-03-26 03:36:13,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:13,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126771937] [2021-03-26 03:36:13,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:14,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:14,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:14,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:14,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:36:14,120 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:36:14,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:36:14,161 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 03:36:14,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 03:36:14,186 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-26 03:36:14,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 03:36:14,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-03-26 03:36:14,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 03:36:14,270 INFO L142 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size [2021-03-26 03:36:14,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 03:36:14,333 INFO L142 QuantifierPusher]: treesize reduction 27, result has 67.1 percent of original size [2021-03-26 03:36:14,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 03:36:14,412 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-26 03:36:14,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-26 03:36:14,497 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-03-26 03:36:14,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-26 03:36:14,605 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-03-26 03:36:14,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-26 03:36:14,694 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 03:36:14,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 03:36:14,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:14,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126771937] [2021-03-26 03:36:14,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:14,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 03:36:14,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940188846] [2021-03-26 03:36:14,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 03:36:14,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:14,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 03:36:14,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 03:36:14,753 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 03:36:14,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 144 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:14,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:14,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 03:36:14,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:16,010 INFO L129 PetriNetUnfolder]: 13170/17677 cut-off events. [2021-03-26 03:36:16,011 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:16,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33070 conditions, 17677 events. 13170/17677 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 99852 event pairs, 4097 based on Foata normal form. 1/17127 useless extension candidates. Maximal degree in co-relation 33060. Up to 5633 conditions per place. [2021-03-26 03:36:16,274 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 65 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2021-03-26 03:36:16,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 113 transitions, 424 flow [2021-03-26 03:36:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 03:36:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 03:36:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 03:36:16,280 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 03:36:16,280 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 03:36:16,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 03:36:16,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:16,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 03:36:16,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:16,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:16,289 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:16,290 INFO L185 Difference]: Start difference. First operand has 55 places, 49 transitions, 144 flow. Second operand 13 states and 2092 transitions. [2021-03-26 03:36:16,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 113 transitions, 424 flow [2021-03-26 03:36:16,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 113 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:36:16,293 INFO L241 Difference]: Finished difference. Result has 77 places, 59 transitions, 228 flow [2021-03-26 03:36:16,293 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=228, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2021-03-26 03:36:16,294 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 9 predicate places. [2021-03-26 03:36:16,295 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:16,295 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 59 transitions, 228 flow [2021-03-26 03:36:16,295 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 59 transitions, 228 flow [2021-03-26 03:36:16,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 59 transitions, 228 flow [2021-03-26 03:36:16,316 INFO L129 PetriNetUnfolder]: 72/269 cut-off events. [2021-03-26 03:36:16,317 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-03-26 03:36:16,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 269 events. 72/269 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1368 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 341. Up to 51 conditions per place. [2021-03-26 03:36:16,320 INFO L142 LiptonReduction]: Number of co-enabled transitions 968 [2021-03-26 03:36:16,324 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:16,324 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:16,324 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-03-26 03:36:16,327 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 228 flow [2021-03-26 03:36:16,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:16,330 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:16,330 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] [2021-03-26 03:36:16,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 03:36:16,330 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:16,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:16,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1223284559, now seen corresponding path program 1 times [2021-03-26 03:36:16,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:16,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286384711] [2021-03-26 03:36:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:16,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:16,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:16,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:16,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:36:16,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:16,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:16,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286384711] [2021-03-26 03:36:16,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:16,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:36:16,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409680419] [2021-03-26 03:36:16,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:36:16,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:16,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:36:16,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:36:16,364 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2021-03-26 03:36:16,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:16,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:16,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2021-03-26 03:36:16,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:16,382 INFO L129 PetriNetUnfolder]: 4/144 cut-off events. [2021-03-26 03:36:16,382 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-03-26 03:36:16,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 144 events. 4/144 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 657 event pairs, 0 based on Foata normal form. 21/148 useless extension candidates. Maximal degree in co-relation 224. Up to 11 conditions per place. [2021-03-26 03:36:16,384 INFO L132 encePairwiseOnDemand]: 174/179 looper letters, 1 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2021-03-26 03:36:16,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 46 transitions, 193 flow [2021-03-26 03:36:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:36:16,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:36:16,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2021-03-26 03:36:16,386 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9441340782122905 [2021-03-26 03:36:16,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2021-03-26 03:36:16,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2021-03-26 03:36:16,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:16,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2021-03-26 03:36:16,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:16,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:16,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:16,389 INFO L185 Difference]: Start difference. First operand has 77 places, 59 transitions, 228 flow. Second operand 3 states and 507 transitions. [2021-03-26 03:36:16,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 46 transitions, 193 flow [2021-03-26 03:36:16,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 46 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:36:16,390 INFO L241 Difference]: Finished difference. Result has 78 places, 46 transitions, 190 flow [2021-03-26 03:36:16,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=78, PETRI_TRANSITIONS=46} [2021-03-26 03:36:16,392 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2021-03-26 03:36:16,392 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:16,392 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 46 transitions, 190 flow [2021-03-26 03:36:16,392 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 46 transitions, 190 flow [2021-03-26 03:36:16,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 78 places, 46 transitions, 190 flow [2021-03-26 03:36:16,403 INFO L129 PetriNetUnfolder]: 4/144 cut-off events. [2021-03-26 03:36:16,404 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-03-26 03:36:16,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 144 events. 4/144 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 663 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 217. Up to 11 conditions per place. [2021-03-26 03:36:16,405 INFO L142 LiptonReduction]: Number of co-enabled transitions 582 [2021-03-26 03:36:16,407 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:16,407 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:16,407 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-03-26 03:36:16,409 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 46 transitions, 190 flow [2021-03-26 03:36:16,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:16,410 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:16,410 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] [2021-03-26 03:36:16,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 03:36:16,410 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:16,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:16,411 INFO L82 PathProgramCache]: Analyzing trace with hash -223924269, now seen corresponding path program 2 times [2021-03-26 03:36:16,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:16,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106757959] [2021-03-26 03:36:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:16,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:16,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:16,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:16,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:36:16,501 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:36:16,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:36:16,516 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 03:36:16,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 03:36:16,541 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 03:36:16,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 03:36:16,578 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-26 03:36:16,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-26 03:36:16,618 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-26 03:36:16,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 03:36:16,672 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-03-26 03:36:16,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 03:36:16,741 INFO L142 QuantifierPusher]: treesize reduction 54, result has 55.4 percent of original size [2021-03-26 03:36:16,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-26 03:36:16,844 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-03-26 03:36:16,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-26 03:36:16,944 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-03-26 03:36:16,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-26 03:36:17,015 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 03:36:17,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 03:36:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:17,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106757959] [2021-03-26 03:36:17,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:17,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 03:36:17,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282169465] [2021-03-26 03:36:17,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 03:36:17,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:17,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 03:36:17,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 03:36:17,073 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 03:36:17,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 46 transitions, 190 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:17,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:17,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 03:36:17,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:18,532 INFO L129 PetriNetUnfolder]: 13678/18048 cut-off events. [2021-03-26 03:36:18,532 INFO L130 PetriNetUnfolder]: For 17556/17645 co-relation queries the response was YES. [2021-03-26 03:36:18,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53449 conditions, 18048 events. 13678/18048 cut-off events. For 17556/17645 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 95112 event pairs, 4351 based on Foata normal form. 1/17659 useless extension candidates. Maximal degree in co-relation 53428. Up to 7434 conditions per place. [2021-03-26 03:36:18,843 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 74 selfloop transitions, 12 changer transitions 0/110 dead transitions. [2021-03-26 03:36:18,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 618 flow [2021-03-26 03:36:18,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 03:36:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 03:36:18,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 03:36:18,855 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 03:36:18,856 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 03:36:18,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 03:36:18,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:18,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 03:36:18,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:18,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:18,876 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:18,876 INFO L185 Difference]: Start difference. First operand has 78 places, 46 transitions, 190 flow. Second operand 13 states and 2092 transitions. [2021-03-26 03:36:18,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 618 flow [2021-03-26 03:36:18,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 110 transitions, 617 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:36:18,894 INFO L241 Difference]: Finished difference. Result has 100 places, 56 transitions, 297 flow [2021-03-26 03:36:18,894 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=297, PETRI_PLACES=100, PETRI_TRANSITIONS=56} [2021-03-26 03:36:18,894 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 32 predicate places. [2021-03-26 03:36:18,894 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:18,894 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 56 transitions, 297 flow [2021-03-26 03:36:18,895 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 56 transitions, 297 flow [2021-03-26 03:36:18,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 56 transitions, 297 flow [2021-03-26 03:36:18,920 INFO L129 PetriNetUnfolder]: 7/246 cut-off events. [2021-03-26 03:36:18,920 INFO L130 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2021-03-26 03:36:18,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 246 events. 7/246 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1594 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 414. Up to 20 conditions per place. [2021-03-26 03:36:18,923 INFO L142 LiptonReduction]: Number of co-enabled transitions 798 [2021-03-26 03:36:18,926 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:18,926 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:18,926 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-26 03:36:18,929 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 56 transitions, 297 flow [2021-03-26 03:36:18,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:18,930 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:18,930 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] [2021-03-26 03:36:18,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 03:36:18,931 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:18,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:18,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1600649307, now seen corresponding path program 3 times [2021-03-26 03:36:18,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:18,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861063065] [2021-03-26 03:36:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:19,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:19,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:19,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:19,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:36:19,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:19,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:36:19,024 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:36:19,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:36:19,041 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 03:36:19,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 03:36:19,060 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 03:36:19,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 03:36:19,085 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 03:36:19,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 03:36:19,118 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 03:36:19,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 03:36:19,159 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-03-26 03:36:19,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-26 03:36:19,213 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-03-26 03:36:19,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 03:36:19,273 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 03:36:19,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 03:36:19,343 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 03:36:19,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 03:36:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:19,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861063065] [2021-03-26 03:36:19,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:19,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 03:36:19,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098416048] [2021-03-26 03:36:19,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 03:36:19,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:19,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 03:36:19,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 03:36:19,408 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 03:36:19,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 56 transitions, 297 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:19,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:19,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 03:36:19,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:21,838 INFO L129 PetriNetUnfolder]: 19185/29925 cut-off events. [2021-03-26 03:36:21,838 INFO L130 PetriNetUnfolder]: For 78159/78347 co-relation queries the response was YES. [2021-03-26 03:36:22,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103344 conditions, 29925 events. 19185/29925 cut-off events. For 78159/78347 co-relation queries the response was YES. Maximal size of possible extension queue 2325. Compared 242386 event pairs, 5380 based on Foata normal form. 3/29468 useless extension candidates. Maximal degree in co-relation 103312. Up to 8988 conditions per place. [2021-03-26 03:36:22,417 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 114 selfloop transitions, 24 changer transitions 0/162 dead transitions. [2021-03-26 03:36:22,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 162 transitions, 1269 flow [2021-03-26 03:36:22,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 03:36:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 03:36:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 03:36:22,422 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 03:36:22,422 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 03:36:22,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 03:36:22,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:22,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 03:36:22,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:22,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:22,432 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:22,432 INFO L185 Difference]: Start difference. First operand has 100 places, 56 transitions, 297 flow. Second operand 13 states and 2092 transitions. [2021-03-26 03:36:22,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 162 transitions, 1269 flow [2021-03-26 03:36:22,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 162 transitions, 1225 flow, removed 13 selfloop flow, removed 1 redundant places. [2021-03-26 03:36:22,765 INFO L241 Difference]: Finished difference. Result has 122 places, 73 transitions, 512 flow [2021-03-26 03:36:22,765 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=512, PETRI_PLACES=122, PETRI_TRANSITIONS=73} [2021-03-26 03:36:22,765 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 54 predicate places. [2021-03-26 03:36:22,766 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:22,766 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 73 transitions, 512 flow [2021-03-26 03:36:22,766 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 73 transitions, 512 flow [2021-03-26 03:36:22,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 122 places, 73 transitions, 512 flow [2021-03-26 03:36:22,846 INFO L129 PetriNetUnfolder]: 20/747 cut-off events. [2021-03-26 03:36:22,847 INFO L130 PetriNetUnfolder]: For 740/764 co-relation queries the response was YES. [2021-03-26 03:36:22,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 747 events. 20/747 cut-off events. For 740/764 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7576 event pairs, 0 based on Foata normal form. 0/652 useless extension candidates. Maximal degree in co-relation 1393. Up to 70 conditions per place. [2021-03-26 03:36:22,857 INFO L142 LiptonReduction]: Number of co-enabled transitions 1188 [2021-03-26 03:36:22,860 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:22,860 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:22,860 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 94 [2021-03-26 03:36:22,861 INFO L480 AbstractCegarLoop]: Abstraction has has 122 places, 73 transitions, 512 flow [2021-03-26 03:36:22,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:22,862 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:22,862 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] [2021-03-26 03:36:22,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-26 03:36:22,863 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:22,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:22,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1110659359, now seen corresponding path program 4 times [2021-03-26 03:36:22,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:22,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862678823] [2021-03-26 03:36:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:22,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:22,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:22,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:22,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:36:22,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:22,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:36:22,943 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:36:22,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:36:22,956 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 03:36:22,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 03:36:22,976 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 03:36:22,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 03:36:23,000 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 03:36:23,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 03:36:23,031 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 03:36:23,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 03:36:23,070 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 03:36:23,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 03:36:23,114 INFO L142 QuantifierPusher]: treesize reduction 54, result has 55.4 percent of original size [2021-03-26 03:36:23,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-26 03:36:23,169 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 03:36:23,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 03:36:23,238 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 03:36:23,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 03:36:23,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:23,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862678823] [2021-03-26 03:36:23,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:23,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 03:36:23,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133580823] [2021-03-26 03:36:23,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 03:36:23,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:23,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 03:36:23,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 03:36:23,298 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 03:36:23,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 73 transitions, 512 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:23,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:23,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 03:36:23,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:28,470 INFO L129 PetriNetUnfolder]: 25686/41825 cut-off events. [2021-03-26 03:36:28,470 INFO L130 PetriNetUnfolder]: For 211197/211581 co-relation queries the response was YES. [2021-03-26 03:36:28,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175961 conditions, 41825 events. 25686/41825 cut-off events. For 211197/211581 co-relation queries the response was YES. Maximal size of possible extension queue 3067. Compared 357446 event pairs, 7727 based on Foata normal form. 1/41341 useless extension candidates. Maximal degree in co-relation 175918. Up to 12426 conditions per place. [2021-03-26 03:36:29,209 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 165 selfloop transitions, 41 changer transitions 0/230 dead transitions. [2021-03-26 03:36:29,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 230 transitions, 2278 flow [2021-03-26 03:36:29,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 03:36:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 03:36:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 03:36:29,213 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 03:36:29,213 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 03:36:29,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 03:36:29,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:29,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 03:36:29,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:29,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:29,223 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:29,223 INFO L185 Difference]: Start difference. First operand has 122 places, 73 transitions, 512 flow. Second operand 13 states and 2092 transitions. [2021-03-26 03:36:29,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 230 transitions, 2278 flow [2021-03-26 03:36:29,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 230 transitions, 2203 flow, removed 26 selfloop flow, removed 1 redundant places. [2021-03-26 03:36:29,774 INFO L241 Difference]: Finished difference. Result has 144 places, 110 transitions, 1053 flow [2021-03-26 03:36:29,774 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1053, PETRI_PLACES=144, PETRI_TRANSITIONS=110} [2021-03-26 03:36:29,774 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 76 predicate places. [2021-03-26 03:36:29,774 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:29,775 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 110 transitions, 1053 flow [2021-03-26 03:36:29,775 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 110 transitions, 1053 flow [2021-03-26 03:36:29,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 110 transitions, 1053 flow [2021-03-26 03:36:29,932 INFO L129 PetriNetUnfolder]: 43/1788 cut-off events. [2021-03-26 03:36:29,932 INFO L130 PetriNetUnfolder]: For 3091/3237 co-relation queries the response was YES. [2021-03-26 03:36:29,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 1788 events. 43/1788 cut-off events. For 3091/3237 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 22999 event pairs, 0 based on Foata normal form. 0/1570 useless extension candidates. Maximal degree in co-relation 3737. Up to 177 conditions per place. [2021-03-26 03:36:29,962 INFO L142 LiptonReduction]: Number of co-enabled transitions 1836 [2021-03-26 03:36:29,969 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:29,969 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:29,969 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 195 [2021-03-26 03:36:29,970 INFO L480 AbstractCegarLoop]: Abstraction has has 144 places, 110 transitions, 1053 flow [2021-03-26 03:36:29,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:29,972 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:29,972 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] [2021-03-26 03:36:29,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-26 03:36:29,972 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:29,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:29,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1093254067, now seen corresponding path program 5 times [2021-03-26 03:36:29,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:29,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994419932] [2021-03-26 03:36:29,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:30,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:30,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:30,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:30,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:36:30,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:30,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:36:30,036 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:36:30,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:36:30,047 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 03:36:30,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 03:36:30,063 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 03:36:30,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 03:36:30,085 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 03:36:30,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 03:36:30,114 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 03:36:30,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 03:36:30,152 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 03:36:30,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 03:36:30,195 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-03-26 03:36:30,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 03:36:30,245 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-03-26 03:36:30,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-26 03:36:30,308 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 03:36:30,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 03:36:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:30,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994419932] [2021-03-26 03:36:30,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:30,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 03:36:30,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657460011] [2021-03-26 03:36:30,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 03:36:30,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:30,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 03:36:30,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 03:36:30,365 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 03:36:30,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 110 transitions, 1053 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:30,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:30,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 03:36:30,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:39,597 INFO L129 PetriNetUnfolder]: 37876/65799 cut-off events. [2021-03-26 03:36:39,597 INFO L130 PetriNetUnfolder]: For 456959/459625 co-relation queries the response was YES. [2021-03-26 03:36:40,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304098 conditions, 65799 events. 37876/65799 cut-off events. For 456959/459625 co-relation queries the response was YES. Maximal size of possible extension queue 5583. Compared 660692 event pairs, 7610 based on Foata normal form. 3/65200 useless extension candidates. Maximal degree in co-relation 304044. Up to 19698 conditions per place. [2021-03-26 03:36:41,099 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 149 selfloop transitions, 72 changer transitions 0/245 dead transitions. [2021-03-26 03:36:41,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 245 transitions, 2939 flow [2021-03-26 03:36:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 03:36:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 03:36:41,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 03:36:41,103 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 03:36:41,103 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 03:36:41,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 03:36:41,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:41,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 03:36:41,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:41,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:41,111 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:41,111 INFO L185 Difference]: Start difference. First operand has 144 places, 110 transitions, 1053 flow. Second operand 13 states and 2092 transitions. [2021-03-26 03:36:41,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 245 transitions, 2939 flow [2021-03-26 03:36:43,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 245 transitions, 2897 flow, removed 14 selfloop flow, removed 1 redundant places. [2021-03-26 03:36:43,617 INFO L241 Difference]: Finished difference. Result has 166 places, 156 transitions, 1919 flow [2021-03-26 03:36:43,617 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1919, PETRI_PLACES=166, PETRI_TRANSITIONS=156} [2021-03-26 03:36:43,618 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 98 predicate places. [2021-03-26 03:36:43,618 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:43,618 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 156 transitions, 1919 flow [2021-03-26 03:36:43,618 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 156 transitions, 1919 flow [2021-03-26 03:36:43,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 166 places, 156 transitions, 1919 flow [2021-03-26 03:36:43,996 INFO L129 PetriNetUnfolder]: 83/3568 cut-off events. [2021-03-26 03:36:43,996 INFO L130 PetriNetUnfolder]: For 10629/11090 co-relation queries the response was YES. [2021-03-26 03:36:44,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8787 conditions, 3568 events. 83/3568 cut-off events. For 10629/11090 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 52750 event pairs, 0 based on Foata normal form. 7/3137 useless extension candidates. Maximal degree in co-relation 8723. Up to 332 conditions per place. [2021-03-26 03:36:44,064 INFO L142 LiptonReduction]: Number of co-enabled transitions 2710 [2021-03-26 03:36:44,072 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:44,072 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:44,072 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 454 [2021-03-26 03:36:44,073 INFO L480 AbstractCegarLoop]: Abstraction has has 166 places, 156 transitions, 1919 flow [2021-03-26 03:36:44,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:44,074 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:44,074 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] [2021-03-26 03:36:44,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-26 03:36:44,074 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:36:44,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:44,074 INFO L82 PathProgramCache]: Analyzing trace with hash -623198385, now seen corresponding path program 6 times [2021-03-26 03:36:44,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:44,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253453470] [2021-03-26 03:36:44,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:44,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:44,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:36:44,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:44,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:36:44,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:44,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:36:44,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:44,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 03:36:44,141 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 03:36:44,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 03:36:44,155 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 03:36:44,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 03:36:44,174 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-26 03:36:44,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 03:36:44,197 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 03:36:44,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 03:36:44,230 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 03:36:44,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 03:36:44,278 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-26 03:36:44,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 03:36:44,329 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 03:36:44,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 03:36:44,389 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 03:36:44,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 03:36:44,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:36:44,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253453470] [2021-03-26 03:36:44,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:44,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 03:36:44,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549935245] [2021-03-26 03:36:44,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 03:36:44,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:44,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 03:36:44,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 03:36:44,442 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 03:36:44,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 156 transitions, 1919 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:36:44,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:44,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 03:36:44,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:37:00,061 INFO L129 PetriNetUnfolder]: 50351/89961 cut-off events. [2021-03-26 03:37:00,061 INFO L130 PetriNetUnfolder]: For 966341/972192 co-relation queries the response was YES. [2021-03-26 03:37:01,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 489148 conditions, 89961 events. 50351/89961 cut-off events. For 966341/972192 co-relation queries the response was YES. Maximal size of possible extension queue 7702. Compared 971533 event pairs, 14297 based on Foata normal form. 3/89038 useless extension candidates. Maximal degree in co-relation 489083. Up to 27447 conditions per place. [2021-03-26 03:37:02,375 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 329 selfloop transitions, 70 changer transitions 0/423 dead transitions. [2021-03-26 03:37:02,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 423 transitions, 6237 flow [2021-03-26 03:37:02,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 03:37:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 03:37:02,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 03:37:02,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 03:37:02,380 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 03:37:02,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 03:37:02,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:37:02,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 03:37:02,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:37:02,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:37:02,388 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:37:02,388 INFO L185 Difference]: Start difference. First operand has 166 places, 156 transitions, 1919 flow. Second operand 13 states and 2092 transitions. [2021-03-26 03:37:02,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 423 transitions, 6237 flow [2021-03-26 03:37:11,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 423 transitions, 6089 flow, removed 61 selfloop flow, removed 1 redundant places. [2021-03-26 03:37:11,425 INFO L241 Difference]: Finished difference. Result has 188 places, 204 transitions, 2878 flow [2021-03-26 03:37:11,425 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2878, PETRI_PLACES=188, PETRI_TRANSITIONS=204} [2021-03-26 03:37:11,425 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 120 predicate places. [2021-03-26 03:37:11,425 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:37:11,425 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 204 transitions, 2878 flow [2021-03-26 03:37:11,426 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 204 transitions, 2878 flow [2021-03-26 03:37:11,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 188 places, 204 transitions, 2878 flow [2021-03-26 03:37:12,406 INFO L129 PetriNetUnfolder]: 183/6959 cut-off events. [2021-03-26 03:37:12,407 INFO L130 PetriNetUnfolder]: For 28756/29704 co-relation queries the response was YES. [2021-03-26 03:37:12,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18622 conditions, 6959 events. 183/6959 cut-off events. For 28756/29704 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 115098 event pairs, 0 based on Foata normal form. 19/6168 useless extension candidates. Maximal degree in co-relation 18547. Up to 628 conditions per place. [2021-03-26 03:37:12,549 INFO L142 LiptonReduction]: Number of co-enabled transitions 3504 [2021-03-26 03:37:12,559 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:37:12,560 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:37:12,560 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1135 [2021-03-26 03:37:12,560 INFO L480 AbstractCegarLoop]: Abstraction has has 188 places, 204 transitions, 2878 flow [2021-03-26 03:37:12,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:37:12,561 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:37:12,561 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] [2021-03-26 03:37:12,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-26 03:37:12,561 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:37:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:37:12,562 INFO L82 PathProgramCache]: Analyzing trace with hash -919380479, now seen corresponding path program 7 times [2021-03-26 03:37:12,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:37:12,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586683606] [2021-03-26 03:37:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:37:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:37:12,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:37:12,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:37:12,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:37:12,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:37:12,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:37:12,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:37:12,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:37:12,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 03:37:12,611 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 03:37:12,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 03:37:12,626 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 03:37:12,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 03:37:12,646 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-26 03:37:12,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 03:37:12,674 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 03:37:12,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 03:37:12,707 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-03-26 03:37:12,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-26 03:37:12,740 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-26 03:37:12,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 03:37:12,803 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 03:37:12,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 03:37:12,859 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 03:37:12,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 03:37:12,975 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-26 03:37:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:37:12,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586683606] [2021-03-26 03:37:12,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:37:12,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 03:37:12,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168907848] [2021-03-26 03:37:12,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 03:37:12,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:37:12,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 03:37:12,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 03:37:12,979 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 03:37:12,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 204 transitions, 2878 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:37:12,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:37:12,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 03:37:12,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:37:39,972 INFO L129 PetriNetUnfolder]: 68312/130292 cut-off events. [2021-03-26 03:37:39,972 INFO L130 PetriNetUnfolder]: For 1873559/1887996 co-relation queries the response was YES. [2021-03-26 03:37:43,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 772445 conditions, 130292 events. 68312/130292 cut-off events. For 1873559/1887996 co-relation queries the response was YES. Maximal size of possible extension queue 11235. Compared 1580555 event pairs, 21637 based on Foata normal form. 3/128635 useless extension candidates. Maximal degree in co-relation 772369. Up to 38205 conditions per place. [2021-03-26 03:37:43,845 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 429 selfloop transitions, 104 changer transitions 0/557 dead transitions. [2021-03-26 03:37:43,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 557 transitions, 9359 flow [2021-03-26 03:37:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 03:37:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 03:37:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 03:37:43,848 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 03:37:43,848 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 03:37:43,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 03:37:43,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:37:43,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 03:37:43,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:37:43,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:37:43,856 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:37:43,856 INFO L185 Difference]: Start difference. First operand has 188 places, 204 transitions, 2878 flow. Second operand 13 states and 2092 transitions. [2021-03-26 03:37:43,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 557 transitions, 9359 flow [2021-03-26 03:38:12,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 557 transitions, 9095 flow, removed 114 selfloop flow, removed 1 redundant places. [2021-03-26 03:38:12,956 INFO L241 Difference]: Finished difference. Result has 210 places, 294 transitions, 4785 flow [2021-03-26 03:38:12,957 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=2761, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4785, PETRI_PLACES=210, PETRI_TRANSITIONS=294} [2021-03-26 03:38:12,957 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 142 predicate places. [2021-03-26 03:38:12,957 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:38:12,957 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 294 transitions, 4785 flow [2021-03-26 03:38:12,957 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 294 transitions, 4785 flow [2021-03-26 03:38:12,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 210 places, 294 transitions, 4785 flow [2021-03-26 03:38:15,602 INFO L129 PetriNetUnfolder]: 388/13874 cut-off events. [2021-03-26 03:38:15,602 INFO L130 PetriNetUnfolder]: For 74049/76261 co-relation queries the response was YES. [2021-03-26 03:38:15,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39712 conditions, 13874 events. 388/13874 cut-off events. For 74049/76261 co-relation queries the response was YES. Maximal size of possible extension queue 1227. Compared 256115 event pairs, 0 based on Foata normal form. 38/12409 useless extension candidates. Maximal degree in co-relation 39626. Up to 1227 conditions per place. [2021-03-26 03:38:15,932 INFO L142 LiptonReduction]: Number of co-enabled transitions 4884 [2021-03-26 03:38:15,948 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:38:15,948 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:38:15,948 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2991 [2021-03-26 03:38:15,949 INFO L480 AbstractCegarLoop]: Abstraction has has 210 places, 294 transitions, 4785 flow [2021-03-26 03:38:15,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:38:15,949 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:38:15,949 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] [2021-03-26 03:38:15,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-26 03:38:15,950 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:38:15,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:38:15,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1417211775, now seen corresponding path program 8 times [2021-03-26 03:38:15,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:38:15,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319573186] [2021-03-26 03:38:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:38:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:38:15,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:38:15,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:38:15,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:38:15,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:38:15,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:38:15,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:38:15,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:38:15,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 03:38:16,004 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 03:38:16,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 03:38:16,020 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 03:38:16,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 03:38:16,041 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 03:38:16,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 03:38:16,071 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 03:38:16,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 03:38:16,106 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-26 03:38:16,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-26 03:38:16,172 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-26 03:38:16,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 03:38:16,374 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-03-26 03:38:16,377 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 03:38:16,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 03:38:16,440 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 03:38:16,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 03:38:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:38:16,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319573186] [2021-03-26 03:38:16,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:38:16,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 03:38:16,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978061907] [2021-03-26 03:38:16,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 03:38:16,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:38:16,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 03:38:16,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 03:38:16,490 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 03:38:16,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 294 transitions, 4785 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:38:16,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:38:16,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 03:38:16,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:39:11,494 INFO L129 PetriNetUnfolder]: 91604/183877 cut-off events. [2021-03-26 03:39:11,494 INFO L130 PetriNetUnfolder]: For 3275357/3307428 co-relation queries the response was YES. [2021-03-26 03:39:15,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1163481 conditions, 183877 events. 91604/183877 cut-off events. For 3275357/3307428 co-relation queries the response was YES. Maximal size of possible extension queue 15955. Compared 2432499 event pairs, 29649 based on Foata normal form. 3/180845 useless extension candidates. Maximal degree in co-relation 1163394. Up to 54563 conditions per place. [2021-03-26 03:39:17,084 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 375 selfloop transitions, 182 changer transitions 0/581 dead transitions. [2021-03-26 03:39:17,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 581 transitions, 10542 flow [2021-03-26 03:39:17,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 03:39:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 03:39:17,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 03:39:17,086 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 03:39:17,086 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 03:39:17,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 03:39:17,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:39:17,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 03:39:17,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:39:17,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:39:17,091 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:39:17,091 INFO L185 Difference]: Start difference. First operand has 210 places, 294 transitions, 4785 flow. Second operand 13 states and 2092 transitions. [2021-03-26 03:39:17,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 581 transitions, 10542 flow [2021-03-26 03:40:20,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 581 transitions, 10325 flow, removed 94 selfloop flow, removed 1 redundant places. [2021-03-26 03:40:20,638 INFO L241 Difference]: Finished difference. Result has 232 places, 394 transitions, 7304 flow [2021-03-26 03:40:20,639 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=4655, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7304, PETRI_PLACES=232, PETRI_TRANSITIONS=394} [2021-03-26 03:40:20,639 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 164 predicate places. [2021-03-26 03:40:20,639 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:40:20,639 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 394 transitions, 7304 flow [2021-03-26 03:40:20,639 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 394 transitions, 7304 flow [2021-03-26 03:40:20,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 232 places, 394 transitions, 7304 flow [2021-03-26 03:40:26,904 INFO L129 PetriNetUnfolder]: 628/20368 cut-off events. [2021-03-26 03:40:26,904 INFO L130 PetriNetUnfolder]: For 146516/150186 co-relation queries the response was YES. [2021-03-26 03:40:27,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63892 conditions, 20368 events. 628/20368 cut-off events. For 146516/150186 co-relation queries the response was YES. Maximal size of possible extension queue 1789. Compared 397069 event pairs, 0 based on Foata normal form. 37/18416 useless extension candidates. Maximal degree in co-relation 63795. Up to 1789 conditions per place. [2021-03-26 03:40:27,403 INFO L142 LiptonReduction]: Number of co-enabled transitions 6440 [2021-03-26 03:40:27,449 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:40:27,449 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:40:27,449 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6810 [2021-03-26 03:40:27,450 INFO L480 AbstractCegarLoop]: Abstraction has has 232 places, 394 transitions, 7304 flow [2021-03-26 03:40:27,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:27,451 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:40:27,451 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] [2021-03-26 03:40:27,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-26 03:40:27,451 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:40:27,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:40:27,451 INFO L82 PathProgramCache]: Analyzing trace with hash 446775507, now seen corresponding path program 9 times [2021-03-26 03:40:27,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:40:27,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736230997] [2021-03-26 03:40:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:40:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:40:27,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:27,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:40:27,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:27,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:40:27,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:27,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:40:27,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:40:27,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 03:40:27,503 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 03:40:27,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 03:40:27,518 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 03:40:27,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 03:40:27,539 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-26 03:40:27,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 03:40:27,568 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-03-26 03:40:27,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 03:40:27,621 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-26 03:40:27,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-26 03:40:27,680 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-26 03:40:27,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 03:40:27,750 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 03:40:27,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 03:40:27,809 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 03:40:27,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 03:40:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:40:27,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736230997] [2021-03-26 03:40:27,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:40:27,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 03:40:27,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102089248] [2021-03-26 03:40:27,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 03:40:27,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:40:27,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 03:40:27,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 03:40:27,851 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 03:40:27,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 394 transitions, 7304 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:40:27,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:40:27,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 03:40:27,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:42:22,101 INFO L129 PetriNetUnfolder]: 124454/274527 cut-off events. [2021-03-26 03:42:22,101 INFO L130 PetriNetUnfolder]: For 5795504/5879024 co-relation queries the response was YES. [2021-03-26 03:42:28,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1797188 conditions, 274527 events. 124454/274527 cut-off events. For 5795504/5879024 co-relation queries the response was YES. Maximal size of possible extension queue 24369. Compared 4130197 event pairs, 42960 based on Foata normal form. 5/268347 useless extension candidates. Maximal degree in co-relation 1797090. Up to 76851 conditions per place. [2021-03-26 03:42:30,532 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 578 selfloop transitions, 232 changer transitions 0/834 dead transitions. [2021-03-26 03:42:30,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 834 transitions, 17602 flow [2021-03-26 03:42:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 03:42:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 03:42:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-03-26 03:42:30,534 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2021-03-26 03:42:30,535 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-03-26 03:42:30,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-03-26 03:42:30,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:42:30,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-03-26 03:42:30,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:30,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:30,539 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:42:30,539 INFO L185 Difference]: Start difference. First operand has 232 places, 394 transitions, 7304 flow. Second operand 13 states and 2092 transitions. [2021-03-26 03:42:30,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 834 transitions, 17602 flow [2021-03-26 03:45:20,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 834 transitions, 17243 flow, removed 141 selfloop flow, removed 1 redundant places. [2021-03-26 03:45:20,714 INFO L241 Difference]: Finished difference. Result has 254 places, 583 transitions, 12376 flow [2021-03-26 03:45:20,714 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=7083, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12376, PETRI_PLACES=254, PETRI_TRANSITIONS=583} [2021-03-26 03:45:20,715 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 186 predicate places. [2021-03-26 03:45:20,715 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:45:20,715 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 583 transitions, 12376 flow [2021-03-26 03:45:20,715 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 583 transitions, 12376 flow [2021-03-26 03:45:20,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 254 places, 583 transitions, 12376 flow [2021-03-26 03:45:34,977 INFO L129 PetriNetUnfolder]: 1262/35510 cut-off events. [2021-03-26 03:45:34,978 INFO L130 PetriNetUnfolder]: For 337279/346306 co-relation queries the response was YES. [2021-03-26 03:45:35,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121498 conditions, 35510 events. 1262/35510 cut-off events. For 337279/346306 co-relation queries the response was YES. Maximal size of possible extension queue 3003. Compared 742483 event pairs, 0 based on Foata normal form. 436/32995 useless extension candidates. Maximal degree in co-relation 121390. Up to 3003 conditions per place. [2021-03-26 03:45:36,235 INFO L142 LiptonReduction]: Number of co-enabled transitions 8852 [2021-03-26 03:45:36,303 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:45:36,303 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:45:36,303 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15588 [2021-03-26 03:45:36,304 INFO L480 AbstractCegarLoop]: Abstraction has has 254 places, 583 transitions, 12376 flow [2021-03-26 03:45:36,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:45:36,304 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:45:36,304 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] [2021-03-26 03:45:36,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-26 03:45:36,304 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 03:45:36,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:45:36,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1713653053, now seen corresponding path program 10 times [2021-03-26 03:45:36,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:45:36,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183611256] [2021-03-26 03:45:36,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:45:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:45:36,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:45:36,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:45:36,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:45:36,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:45:36,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:45:36,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:45:36,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:45:36,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 03:45:36,357 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 03:45:36,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 03:45:36,372 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 03:45:36,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 03:45:36,391 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-26 03:45:36,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 03:45:36,431 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-03-26 03:45:36,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 03:45:36,489 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-26 03:45:36,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-26 03:45:36,555 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-26 03:45:36,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 03:45:36,619 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 03:45:36,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 03:45:36,675 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-26 03:45:36,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-26 03:45:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:45:36,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183611256] [2021-03-26 03:45:36,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:45:36,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-26 03:45:36,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779755309] [2021-03-26 03:45:36,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 03:45:36,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:45:36,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 03:45:36,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-03-26 03:45:36,729 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2021-03-26 03:45:36,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 583 transitions, 12376 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:45:36,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:45:36,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2021-03-26 03:45:36,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown