/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 08:06:24,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 08:06:24,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 08:06:24,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 08:06:24,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 08:06:24,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 08:06:24,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 08:06:24,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 08:06:24,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 08:06:24,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 08:06:24,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 08:06:24,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 08:06:24,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 08:06:24,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 08:06:24,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 08:06:24,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 08:06:24,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 08:06:24,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 08:06:24,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 08:06:24,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 08:06:24,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 08:06:24,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 08:06:24,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 08:06:24,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 08:06:24,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 08:06:24,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 08:06:24,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 08:06:24,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 08:06:24,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 08:06:24,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 08:06:24,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 08:06:24,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 08:06:24,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 08:06:24,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 08:06:24,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 08:06:24,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 08:06:24,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 08:06:24,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 08:06:24,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 08:06:24,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 08:06:24,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 08:06:24,708 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-RepeatedVariableLbe.epf [2021-03-25 08:06:24,737 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 08:06:24,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 08:06:24,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 08:06:24,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 08:06:24,739 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 08:06:24,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 08:06:24,739 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 08:06:24,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 08:06:24,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 08:06:24,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 08:06:24,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 08:06:24,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 08:06:24,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 08:06:24,740 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 08:06:24,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 08:06:24,741 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 08:06:24,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 08:06:24,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 08:06:24,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 08:06:24,741 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 08:06:24,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 08:06:24,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 08:06:24,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 08:06:24,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 08:06:24,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 08:06:24,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 08:06:24,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 08:06:24,743 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 08:06:24,743 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 08:06:24,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 08:06:24,743 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 08:06:25,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 08:06:25,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 08:06:25,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 08:06:25,074 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 08:06:25,075 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 08:06:25,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl [2021-03-25 08:06:25,078 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl' [2021-03-25 08:06:25,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 08:06:25,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 08:06:25,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 08:06:25,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 08:06:25,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 08:06:25,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:06:25" (1/1) ... [2021-03-25 08:06:25,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:06:25" (1/1) ... [2021-03-25 08:06:25,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 08:06:25,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 08:06:25,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 08:06:25,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 08:06:25,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:06:25" (1/1) ... [2021-03-25 08:06:25,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:06:25" (1/1) ... [2021-03-25 08:06:25,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:06:25" (1/1) ... [2021-03-25 08:06:25,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:06:25" (1/1) ... [2021-03-25 08:06:25,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:06:25" (1/1) ... [2021-03-25 08:06:25,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:06:25" (1/1) ... [2021-03-25 08:06:25,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:06:25" (1/1) ... [2021-03-25 08:06:25,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 08:06:25,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 08:06:25,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 08:06:25,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 08:06:25,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:06:25" (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 [2021-03-25 08:06:25,226 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-25 08:06:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-25 08:06:25,227 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-25 08:06:25,227 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-25 08:06:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-25 08:06:25,227 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-25 08:06:25,227 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-25 08:06:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-25 08:06:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-25 08:06:25,228 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-25 08:06:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-25 08:06:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-25 08:06:25,228 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-25 08:06:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-25 08:06:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-25 08:06:25,228 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 08:06:25,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 08:06:25,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 08:06:25,229 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-25 08:06:25,229 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-25 08:06:25,229 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-25 08:06:25,230 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-25 08:06:25,230 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-25 08:06:25,231 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-25 08:06:25,231 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-25 08:06:25,231 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-25 08:06:25,231 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-25 08:06:25,231 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-25 08:06:25,231 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-25 08:06:25,231 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-25 08:06:25,232 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 08:06:25,366 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 08:06:25,366 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 08:06:25,368 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 08:06:25 BoogieIcfgContainer [2021-03-25 08:06:25,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 08:06:25,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 08:06:25,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 08:06:25,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 08:06:25,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:06:25" (1/2) ... [2021-03-25 08:06:25,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6324f509 and model type example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 08:06:25, skipping insertion in model container [2021-03-25 08:06:25,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 08:06:25" (2/2) ... [2021-03-25 08:06:25,378 INFO L111 eAbstractionObserver]: Analyzing ICFG example_9.bpl [2021-03-25 08:06:25,382 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 08:06:25,395 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 08:06:25,395 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 08:06:25,541 INFO L149 ThreadInstanceAdder]: Constructed 81 joinOtherThreadTransitions. [2021-03-25 08:06:25,559 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-03-25 08:06:25,592 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 08:06:25,592 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 08:06:25,592 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 08:06:25,592 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 08:06:25,593 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 08:06:25,593 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 08:06:25,593 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 08:06:25,593 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 08:06:25,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 120 transitions, 528 flow [2021-03-25 08:06:25,947 INFO L129 PetriNetUnfolder]: 1793/2334 cut-off events. [2021-03-25 08:06:25,947 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2021-03-25 08:06:25,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 2334 events. 1793/2334 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8920 event pairs, 0 based on Foata normal form. 0/2333 useless extension candidates. Maximal degree in co-relation 2090. Up to 630 conditions per place. [2021-03-25 08:06:25,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 120 transitions, 528 flow [2021-03-25 08:06:25,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 109 transitions, 488 flow [2021-03-25 08:06:25,991 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:26,001 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 109 transitions, 488 flow [2021-03-25 08:06:26,005 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 109 transitions, 488 flow [2021-03-25 08:06:26,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 109 transitions, 488 flow [2021-03-25 08:06:26,196 INFO L129 PetriNetUnfolder]: 1793/2332 cut-off events. [2021-03-25 08:06:26,196 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2021-03-25 08:06:26,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4664 conditions, 2332 events. 1793/2332 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8412 event pairs, 0 based on Foata normal form. 0/2332 useless extension candidates. Maximal degree in co-relation 2090. Up to 630 conditions per place. [2021-03-25 08:06:26,237 INFO L142 LiptonReduction]: Number of co-enabled transitions 2736 [2021-03-25 08:06:26,414 INFO L154 LiptonReduction]: Checked pairs total: 756 [2021-03-25 08:06:26,414 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 08:06:26,416 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 426 [2021-03-25 08:06:26,555 INFO L129 PetriNetUnfolder]: 1793/2322 cut-off events. [2021-03-25 08:06:26,556 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2021-03-25 08:06:26,556 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:26,557 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] [2021-03-25 08:06:26,557 INFO L428 AbstractCegarLoop]: === Iteration 1 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:26,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:26,563 INFO L82 PathProgramCache]: Analyzing trace with hash -368766337, now seen corresponding path program 1 times [2021-03-25 08:06:26,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:26,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983709079] [2021-03-25 08:06:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:26,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:26,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:26,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:26,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:06:26,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:26,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:26,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983709079] [2021-03-25 08:06:26,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:26,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:06:26,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329983150] [2021-03-25 08:06:26,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:06:26,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:26,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:06:26,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:06:26,747 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-03-25 08:06:26,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 100 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:26,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:26,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-03-25 08:06:26,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:26,934 INFO L129 PetriNetUnfolder]: 1001/1368 cut-off events. [2021-03-25 08:06:26,934 INFO L130 PetriNetUnfolder]: For 2025/2025 co-relation queries the response was YES. [2021-03-25 08:06:26,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2840 conditions, 1368 events. 1001/1368 cut-off events. For 2025/2025 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5714 event pairs, 0 based on Foata normal form. 163/1531 useless extension candidates. Maximal degree in co-relation 2066. Up to 280 conditions per place. [2021-03-25 08:06:26,947 INFO L132 encePairwiseOnDemand]: 123/129 looper letters, 4 selfloop transitions, 1 changer transitions 0/95 dead transitions. [2021-03-25 08:06:26,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 95 transitions, 455 flow [2021-03-25 08:06:26,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:06:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:06:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-03-25 08:06:26,962 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-03-25 08:06:26,962 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-03-25 08:06:26,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-03-25 08:06:26,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:26,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-03-25 08:06:26,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:26,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:26,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:26,980 INFO L185 Difference]: Start difference. First operand has 56 places, 100 transitions, 470 flow. Second operand 3 states and 367 transitions. [2021-03-25 08:06:26,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 95 transitions, 455 flow [2021-03-25 08:06:27,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 95 transitions, 285 flow, removed 0 selfloop flow, removed 18 redundant places. [2021-03-25 08:06:27,007 INFO L241 Difference]: Finished difference. Result has 40 places, 95 transitions, 277 flow [2021-03-25 08:06:27,009 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=40, PETRI_TRANSITIONS=95} [2021-03-25 08:06:27,010 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -16 predicate places. [2021-03-25 08:06:27,010 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:27,011 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 95 transitions, 277 flow [2021-03-25 08:06:27,012 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 95 transitions, 277 flow [2021-03-25 08:06:27,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 95 transitions, 277 flow [2021-03-25 08:06:27,096 INFO L129 PetriNetUnfolder]: 1001/1368 cut-off events. [2021-03-25 08:06:27,097 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:06:27,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 1368 events. 1001/1368 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5238 event pairs, 0 based on Foata normal form. 0/1368 useless extension candidates. Maximal degree in co-relation 1365. Up to 280 conditions per place. [2021-03-25 08:06:27,108 INFO L142 LiptonReduction]: Number of co-enabled transitions 1216 [2021-03-25 08:06:27,124 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:27,124 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:27,124 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 114 [2021-03-25 08:06:27,126 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 95 transitions, 277 flow [2021-03-25 08:06:27,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,126 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:27,127 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] [2021-03-25 08:06:27,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 08:06:27,127 INFO L428 AbstractCegarLoop]: === Iteration 2 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:27,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:27,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1267996449, now seen corresponding path program 1 times [2021-03-25 08:06:27,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:27,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054672792] [2021-03-25 08:06:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:27,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:27,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:27,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:27,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:06:27,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:27,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:27,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054672792] [2021-03-25 08:06:27,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:27,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:06:27,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705470876] [2021-03-25 08:06:27,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:06:27,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:27,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:06:27,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:06:27,189 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-03-25 08:06:27,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 95 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:27,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-03-25 08:06:27,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:27,314 INFO L129 PetriNetUnfolder]: 994/1360 cut-off events. [2021-03-25 08:06:27,315 INFO L130 PetriNetUnfolder]: For 157/157 co-relation queries the response was YES. [2021-03-25 08:06:27,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 1360 events. 994/1360 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6102 event pairs, 0 based on Foata normal form. 1/1361 useless extension candidates. Maximal degree in co-relation 1513. Up to 280 conditions per place. [2021-03-25 08:06:27,323 INFO L132 encePairwiseOnDemand]: 127/129 looper letters, 8 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2021-03-25 08:06:27,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 94 transitions, 292 flow [2021-03-25 08:06:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:06:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:06:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-03-25 08:06:27,327 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-03-25 08:06:27,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-03-25 08:06:27,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-03-25 08:06:27,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:27,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-03-25 08:06:27,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,332 INFO L185 Difference]: Start difference. First operand has 40 places, 95 transitions, 277 flow. Second operand 3 states and 367 transitions. [2021-03-25 08:06:27,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 94 transitions, 292 flow [2021-03-25 08:06:27,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 94 transitions, 291 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:06:27,336 INFO L241 Difference]: Finished difference. Result has 41 places, 94 transitions, 275 flow [2021-03-25 08:06:27,336 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=41, PETRI_TRANSITIONS=94} [2021-03-25 08:06:27,337 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -15 predicate places. [2021-03-25 08:06:27,337 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:27,337 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 94 transitions, 275 flow [2021-03-25 08:06:27,338 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 94 transitions, 275 flow [2021-03-25 08:06:27,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 94 transitions, 275 flow [2021-03-25 08:06:27,433 INFO L129 PetriNetUnfolder]: 994/1360 cut-off events. [2021-03-25 08:06:27,433 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:06:27,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 1360 events. 994/1360 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5156 event pairs, 0 based on Foata normal form. 0/1360 useless extension candidates. Maximal degree in co-relation 1366. Up to 280 conditions per place. [2021-03-25 08:06:27,448 INFO L142 LiptonReduction]: Number of co-enabled transitions 1200 [2021-03-25 08:06:27,464 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:27,464 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:27,464 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 127 [2021-03-25 08:06:27,465 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 94 transitions, 275 flow [2021-03-25 08:06:27,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,465 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:27,465 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:06:27,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 08:06:27,466 INFO L428 AbstractCegarLoop]: === Iteration 3 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:27,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:27,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1076204707, now seen corresponding path program 1 times [2021-03-25 08:06:27,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:27,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998101915] [2021-03-25 08:06:27,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:27,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:27,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:27,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:27,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:06:27,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:27,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:27,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998101915] [2021-03-25 08:06:27,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:27,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:06:27,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338121581] [2021-03-25 08:06:27,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:06:27,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:27,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:06:27,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:06:27,513 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-03-25 08:06:27,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 94 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:27,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-03-25 08:06:27,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:27,671 INFO L129 PetriNetUnfolder]: 946/1304 cut-off events. [2021-03-25 08:06:27,671 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2021-03-25 08:06:27,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 1304 events. 946/1304 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5805 event pairs, 0 based on Foata normal form. 7/1311 useless extension candidates. Maximal degree in co-relation 1460. Up to 280 conditions per place. [2021-03-25 08:06:27,680 INFO L132 encePairwiseOnDemand]: 126/129 looper letters, 7 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2021-03-25 08:06:27,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 92 transitions, 285 flow [2021-03-25 08:06:27,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:06:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:06:27,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-03-25 08:06:27,683 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-03-25 08:06:27,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-03-25 08:06:27,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-03-25 08:06:27,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:27,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-03-25 08:06:27,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,686 INFO L185 Difference]: Start difference. First operand has 41 places, 94 transitions, 275 flow. Second operand 3 states and 367 transitions. [2021-03-25 08:06:27,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 92 transitions, 285 flow [2021-03-25 08:06:27,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 92 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:06:27,691 INFO L241 Difference]: Finished difference. Result has 42 places, 92 transitions, 270 flow [2021-03-25 08:06:27,692 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=42, PETRI_TRANSITIONS=92} [2021-03-25 08:06:27,692 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -14 predicate places. [2021-03-25 08:06:27,692 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:27,692 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 92 transitions, 270 flow [2021-03-25 08:06:27,693 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 92 transitions, 270 flow [2021-03-25 08:06:27,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 92 transitions, 270 flow [2021-03-25 08:06:27,783 INFO L129 PetriNetUnfolder]: 946/1304 cut-off events. [2021-03-25 08:06:27,783 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:06:27,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 1304 events. 946/1304 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5000 event pairs, 0 based on Foata normal form. 0/1304 useless extension candidates. Maximal degree in co-relation 1311. Up to 280 conditions per place. [2021-03-25 08:06:27,795 INFO L142 LiptonReduction]: Number of co-enabled transitions 1168 [2021-03-25 08:06:27,810 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:27,811 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:27,811 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 119 [2021-03-25 08:06:27,812 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 92 transitions, 270 flow [2021-03-25 08:06:27,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,813 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:27,813 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] [2021-03-25 08:06:27,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 08:06:27,813 INFO L428 AbstractCegarLoop]: === Iteration 4 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:27,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:27,814 INFO L82 PathProgramCache]: Analyzing trace with hash 323209673, now seen corresponding path program 1 times [2021-03-25 08:06:27,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:27,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765077435] [2021-03-25 08:06:27,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:27,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:27,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:27,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:27,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:06:27,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:27,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:27,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765077435] [2021-03-25 08:06:27,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:27,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:06:27,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89083173] [2021-03-25 08:06:27,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:06:27,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:27,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:06:27,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:06:27,860 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-03-25 08:06:27,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 92 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:27,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-03-25 08:06:27,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:27,924 INFO L129 PetriNetUnfolder]: 393/597 cut-off events. [2021-03-25 08:06:27,924 INFO L130 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2021-03-25 08:06:27,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 597 events. 393/597 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2501 event pairs, 0 based on Foata normal form. 112/709 useless extension candidates. Maximal degree in co-relation 642. Up to 140 conditions per place. [2021-03-25 08:06:27,929 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 3 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2021-03-25 08:06:27,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 86 transitions, 260 flow [2021-03-25 08:06:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:06:27,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:06:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-03-25 08:06:27,931 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-03-25 08:06:27,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-03-25 08:06:27,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-03-25 08:06:27,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:27,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-03-25 08:06:27,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,934 INFO L185 Difference]: Start difference. First operand has 42 places, 92 transitions, 270 flow. Second operand 3 states and 367 transitions. [2021-03-25 08:06:27,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 86 transitions, 260 flow [2021-03-25 08:06:27,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 86 transitions, 259 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:06:27,936 INFO L241 Difference]: Finished difference. Result has 43 places, 86 transitions, 253 flow [2021-03-25 08:06:27,936 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=43, PETRI_TRANSITIONS=86} [2021-03-25 08:06:27,936 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -13 predicate places. [2021-03-25 08:06:27,936 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:27,937 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 86 transitions, 253 flow [2021-03-25 08:06:27,937 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 86 transitions, 253 flow [2021-03-25 08:06:27,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 86 transitions, 253 flow [2021-03-25 08:06:27,975 INFO L129 PetriNetUnfolder]: 393/597 cut-off events. [2021-03-25 08:06:27,975 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:06:27,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 597 events. 393/597 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2115 event pairs, 0 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 605. Up to 140 conditions per place. [2021-03-25 08:06:27,980 INFO L142 LiptonReduction]: Number of co-enabled transitions 1072 [2021-03-25 08:06:27,992 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:27,992 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:27,992 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 56 [2021-03-25 08:06:27,993 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 86 transitions, 253 flow [2021-03-25 08:06:27,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:27,993 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:27,993 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] [2021-03-25 08:06:27,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 08:06:27,994 INFO L428 AbstractCegarLoop]: === Iteration 5 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:27,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:27,994 INFO L82 PathProgramCache]: Analyzing trace with hash 878838051, now seen corresponding path program 1 times [2021-03-25 08:06:27,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:27,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962625874] [2021-03-25 08:06:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:28,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:28,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:28,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:28,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:06:28,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:28,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:28,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962625874] [2021-03-25 08:06:28,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:28,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:06:28,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776429588] [2021-03-25 08:06:28,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:06:28,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:28,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:06:28,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:06:28,029 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-03-25 08:06:28,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 86 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:28,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-03-25 08:06:28,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:28,076 INFO L129 PetriNetUnfolder]: 309/492 cut-off events. [2021-03-25 08:06:28,076 INFO L130 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2021-03-25 08:06:28,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 492 events. 309/492 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2021 event pairs, 0 based on Foata normal form. 15/507 useless extension candidates. Maximal degree in co-relation 558. Up to 105 conditions per place. [2021-03-25 08:06:28,080 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 6 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2021-03-25 08:06:28,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 83 transitions, 258 flow [2021-03-25 08:06:28,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:06:28,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:06:28,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-03-25 08:06:28,081 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-03-25 08:06:28,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-03-25 08:06:28,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-03-25 08:06:28,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:28,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-03-25 08:06:28,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,085 INFO L185 Difference]: Start difference. First operand has 43 places, 86 transitions, 253 flow. Second operand 3 states and 367 transitions. [2021-03-25 08:06:28,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 83 transitions, 258 flow [2021-03-25 08:06:28,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 83 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:06:28,089 INFO L241 Difference]: Finished difference. Result has 44 places, 83 transitions, 245 flow [2021-03-25 08:06:28,089 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=44, PETRI_TRANSITIONS=83} [2021-03-25 08:06:28,089 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -12 predicate places. [2021-03-25 08:06:28,089 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:28,089 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 83 transitions, 245 flow [2021-03-25 08:06:28,089 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 83 transitions, 245 flow [2021-03-25 08:06:28,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 83 transitions, 245 flow [2021-03-25 08:06:28,120 INFO L129 PetriNetUnfolder]: 309/492 cut-off events. [2021-03-25 08:06:28,120 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:06:28,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 492 events. 309/492 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1776 event pairs, 0 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 501. Up to 105 conditions per place. [2021-03-25 08:06:28,124 INFO L142 LiptonReduction]: Number of co-enabled transitions 1024 [2021-03-25 08:06:28,136 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:28,136 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:28,136 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 47 [2021-03-25 08:06:28,137 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 83 transitions, 245 flow [2021-03-25 08:06:28,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,137 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:28,137 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] [2021-03-25 08:06:28,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 08:06:28,138 INFO L428 AbstractCegarLoop]: === Iteration 6 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:28,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:28,138 INFO L82 PathProgramCache]: Analyzing trace with hash -296795403, now seen corresponding path program 1 times [2021-03-25 08:06:28,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:28,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026304205] [2021-03-25 08:06:28,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:28,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:28,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:28,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:28,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:06:28,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:28,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:28,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026304205] [2021-03-25 08:06:28,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:28,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:06:28,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953088787] [2021-03-25 08:06:28,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:06:28,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:28,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:06:28,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:06:28,168 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-03-25 08:06:28,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 83 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:28,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-03-25 08:06:28,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:28,195 INFO L129 PetriNetUnfolder]: 76/160 cut-off events. [2021-03-25 08:06:28,195 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2021-03-25 08:06:28,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 160 events. 76/160 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 486 event pairs, 0 based on Foata normal form. 48/208 useless extension candidates. Maximal degree in co-relation 179. Up to 30 conditions per place. [2021-03-25 08:06:28,197 INFO L132 encePairwiseOnDemand]: 121/129 looper letters, 2 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2021-03-25 08:06:28,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 76 transitions, 230 flow [2021-03-25 08:06:28,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:06:28,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:06:28,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-03-25 08:06:28,198 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-03-25 08:06:28,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-03-25 08:06:28,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-03-25 08:06:28,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:28,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-03-25 08:06:28,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,200 INFO L185 Difference]: Start difference. First operand has 44 places, 83 transitions, 245 flow. Second operand 3 states and 367 transitions. [2021-03-25 08:06:28,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 76 transitions, 230 flow [2021-03-25 08:06:28,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 76 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:06:28,202 INFO L241 Difference]: Finished difference. Result has 45 places, 76 transitions, 225 flow [2021-03-25 08:06:28,203 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=45, PETRI_TRANSITIONS=76} [2021-03-25 08:06:28,203 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2021-03-25 08:06:28,203 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:28,203 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 76 transitions, 225 flow [2021-03-25 08:06:28,203 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 76 transitions, 225 flow [2021-03-25 08:06:28,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 76 transitions, 225 flow [2021-03-25 08:06:28,212 INFO L129 PetriNetUnfolder]: 76/160 cut-off events. [2021-03-25 08:06:28,212 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:06:28,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 160 events. 76/160 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 450 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 170. Up to 30 conditions per place. [2021-03-25 08:06:28,213 INFO L142 LiptonReduction]: Number of co-enabled transitions 656 [2021-03-25 08:06:28,220 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:28,220 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:28,221 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-25 08:06:28,222 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 76 transitions, 225 flow [2021-03-25 08:06:28,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,222 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:28,222 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] [2021-03-25 08:06:28,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 08:06:28,222 INFO L428 AbstractCegarLoop]: === Iteration 7 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:28,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:28,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1151034427, now seen corresponding path program 1 times [2021-03-25 08:06:28,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:28,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364756560] [2021-03-25 08:06:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:28,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:28,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:28,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:28,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:06:28,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:28,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:28,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364756560] [2021-03-25 08:06:28,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:28,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:06:28,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878134954] [2021-03-25 08:06:28,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:06:28,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:28,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:06:28,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:06:28,259 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-03-25 08:06:28,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 76 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:28,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-03-25 08:06:28,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:28,272 INFO L129 PetriNetUnfolder]: 10/48 cut-off events. [2021-03-25 08:06:28,272 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-03-25 08:06:28,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 48 events. 10/48 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 18/66 useless extension candidates. Maximal degree in co-relation 60. Up to 8 conditions per place. [2021-03-25 08:06:28,273 INFO L132 encePairwiseOnDemand]: 120/129 looper letters, 1 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2021-03-25 08:06:28,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 127 flow [2021-03-25 08:06:28,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:06:28,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:06:28,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-03-25 08:06:28,275 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-03-25 08:06:28,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-03-25 08:06:28,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-03-25 08:06:28,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:28,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-03-25 08:06:28,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,278 INFO L185 Difference]: Start difference. First operand has 45 places, 76 transitions, 225 flow. Second operand 3 states and 367 transitions. [2021-03-25 08:06:28,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 127 flow [2021-03-25 08:06:28,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:06:28,279 INFO L241 Difference]: Finished difference. Result has 46 places, 42 transitions, 124 flow [2021-03-25 08:06:28,279 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2021-03-25 08:06:28,279 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2021-03-25 08:06:28,279 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:28,279 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 42 transitions, 124 flow [2021-03-25 08:06:28,279 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 42 transitions, 124 flow [2021-03-25 08:06:28,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 124 flow [2021-03-25 08:06:28,283 INFO L129 PetriNetUnfolder]: 10/48 cut-off events. [2021-03-25 08:06:28,283 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:06:28,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 48 events. 10/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2021-03-25 08:06:28,284 INFO L142 LiptonReduction]: Number of co-enabled transitions 380 [2021-03-25 08:06:28,285 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:28,285 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:28,286 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 08:06:28,287 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 124 flow [2021-03-25 08:06:28,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,287 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:28,287 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] [2021-03-25 08:06:28,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 08:06:28,288 INFO L428 AbstractCegarLoop]: === Iteration 8 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:28,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:28,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1781566773, now seen corresponding path program 1 times [2021-03-25 08:06:28,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:28,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210939256] [2021-03-25 08:06:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:28,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:28,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:28,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:28,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:06:28,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:28,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:06:28,426 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-25 08:06:28,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 08:06:28,466 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-25 08:06:28,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-25 08:06:28,522 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-03-25 08:06:28,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-25 08:06:28,563 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.3 percent of original size [2021-03-25 08:06:28,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-25 08:06:28,613 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-03-25 08:06:28,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-25 08:06:28,677 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 08:06:28,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 08:06:28,725 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:06:28,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:06:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:28,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210939256] [2021-03-25 08:06:28,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:28,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:06:28,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985735349] [2021-03-25 08:06:28,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:06:28,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:28,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:06:28,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:06:28,771 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:06:28,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 124 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:28,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:28,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:06:28,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:29,129 INFO L129 PetriNetUnfolder]: 2489/3679 cut-off events. [2021-03-25 08:06:29,129 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:06:29,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6779 conditions, 3679 events. 2489/3679 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 19529 event pairs, 769 based on Foata normal form. 1/3495 useless extension candidates. Maximal degree in co-relation 6771. Up to 1153 conditions per place. [2021-03-25 08:06:29,159 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 44 selfloop transitions, 8 changer transitions 1/85 dead transitions. [2021-03-25 08:06:29,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 85 transitions, 316 flow [2021-03-25 08:06:29,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:06:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:06:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:06:29,162 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:06:29,163 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:06:29,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:06:29,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:29,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:06:29,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:29,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:29,168 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:29,168 INFO L185 Difference]: Start difference. First operand has 46 places, 42 transitions, 124 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:06:29,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 85 transitions, 316 flow [2021-03-25 08:06:29,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 85 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:06:29,171 INFO L241 Difference]: Finished difference. Result has 64 places, 49 transitions, 186 flow [2021-03-25 08:06:29,171 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=186, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2021-03-25 08:06:29,171 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2021-03-25 08:06:29,171 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:29,172 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 49 transitions, 186 flow [2021-03-25 08:06:29,172 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 49 transitions, 186 flow [2021-03-25 08:06:29,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 49 transitions, 186 flow [2021-03-25 08:06:29,184 INFO L129 PetriNetUnfolder]: 63/219 cut-off events. [2021-03-25 08:06:29,184 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-25 08:06:29,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 219 events. 63/219 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1054 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 276. Up to 51 conditions per place. [2021-03-25 08:06:29,186 INFO L142 LiptonReduction]: Number of co-enabled transitions 570 [2021-03-25 08:06:29,188 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:29,188 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:29,188 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 08:06:29,189 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 186 flow [2021-03-25 08:06:29,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:29,189 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:29,190 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] [2021-03-25 08:06:29,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 08:06:29,190 INFO L428 AbstractCegarLoop]: === Iteration 9 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:29,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:29,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1214353307, now seen corresponding path program 2 times [2021-03-25 08:06:29,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:29,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488303946] [2021-03-25 08:06:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:29,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:29,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:29,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:29,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:06:29,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:29,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:06:29,252 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:06:29,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:06:29,268 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 08:06:29,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 08:06:29,290 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-25 08:06:29,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 08:06:29,328 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-25 08:06:29,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-25 08:06:29,364 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-25 08:06:29,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-25 08:06:29,411 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-03-25 08:06:29,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-25 08:06:29,472 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:06:29,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:06:29,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:29,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488303946] [2021-03-25 08:06:29,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:29,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:06:29,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267637629] [2021-03-25 08:06:29,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:06:29,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:29,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:06:29,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:06:29,524 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:06:29,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 186 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:29,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:29,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:06:29,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:30,148 INFO L129 PetriNetUnfolder]: 3902/6999 cut-off events. [2021-03-25 08:06:30,149 INFO L130 PetriNetUnfolder]: For 5362/5416 co-relation queries the response was YES. [2021-03-25 08:06:30,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15574 conditions, 6999 events. 3902/6999 cut-off events. For 5362/5416 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 55119 event pairs, 963 based on Foata normal form. 1/6764 useless extension candidates. Maximal degree in co-relation 15557. Up to 1551 conditions per place. [2021-03-25 08:06:30,218 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 68 selfloop transitions, 15 changer transitions 1/116 dead transitions. [2021-03-25 08:06:30,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 116 transitions, 678 flow [2021-03-25 08:06:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:06:30,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:06:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:06:30,222 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:06:30,222 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:06:30,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:06:30,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:30,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:06:30,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:30,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:30,227 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:30,227 INFO L185 Difference]: Start difference. First operand has 63 places, 49 transitions, 186 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:06:30,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 116 transitions, 678 flow [2021-03-25 08:06:30,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 116 transitions, 653 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-03-25 08:06:30,236 INFO L241 Difference]: Finished difference. Result has 80 places, 63 transitions, 340 flow [2021-03-25 08:06:30,236 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=340, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2021-03-25 08:06:30,237 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2021-03-25 08:06:30,237 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:30,237 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 63 transitions, 340 flow [2021-03-25 08:06:30,237 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 63 transitions, 340 flow [2021-03-25 08:06:30,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 63 transitions, 340 flow [2021-03-25 08:06:30,290 INFO L129 PetriNetUnfolder]: 197/687 cut-off events. [2021-03-25 08:06:30,290 INFO L130 PetriNetUnfolder]: For 164/185 co-relation queries the response was YES. [2021-03-25 08:06:30,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 687 events. 197/687 cut-off events. For 164/185 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5254 event pairs, 0 based on Foata normal form. 0/602 useless extension candidates. Maximal degree in co-relation 904. Up to 163 conditions per place. [2021-03-25 08:06:30,298 INFO L142 LiptonReduction]: Number of co-enabled transitions 982 [2021-03-25 08:06:30,301 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:30,301 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:30,301 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 64 [2021-03-25 08:06:30,302 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 340 flow [2021-03-25 08:06:30,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:30,303 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:30,304 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] [2021-03-25 08:06:30,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 08:06:30,304 INFO L428 AbstractCegarLoop]: === Iteration 10 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:30,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:30,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1481638487, now seen corresponding path program 3 times [2021-03-25 08:06:30,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:30,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821942100] [2021-03-25 08:06:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:30,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:30,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:30,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:30,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:06:30,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:30,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:06:30,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:30,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 08:06:30,407 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-25 08:06:30,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 08:06:30,425 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-25 08:06:30,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-25 08:06:30,455 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-25 08:06:30,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-25 08:06:30,491 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-25 08:06:30,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-25 08:06:30,540 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 08:06:30,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 08:06:30,589 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:06:30,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:06:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:30,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821942100] [2021-03-25 08:06:30,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:30,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:06:30,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788167008] [2021-03-25 08:06:30,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:06:30,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:30,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:06:30,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:06:30,636 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:06:30,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 340 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:30,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:30,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:06:30,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:31,360 INFO L129 PetriNetUnfolder]: 4028/7108 cut-off events. [2021-03-25 08:06:31,360 INFO L130 PetriNetUnfolder]: For 15658/16241 co-relation queries the response was YES. [2021-03-25 08:06:31,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21517 conditions, 7108 events. 4028/7108 cut-off events. For 15658/16241 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 53919 event pairs, 970 based on Foata normal form. 1/6852 useless extension candidates. Maximal degree in co-relation 21492. Up to 1968 conditions per place. [2021-03-25 08:06:31,526 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 72 selfloop transitions, 19 changer transitions 0/123 dead transitions. [2021-03-25 08:06:31,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 123 transitions, 910 flow [2021-03-25 08:06:31,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:06:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:06:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:06:31,538 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:06:31,538 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:06:31,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:06:31,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:31,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:06:31,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:31,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:31,545 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:31,545 INFO L185 Difference]: Start difference. First operand has 80 places, 63 transitions, 340 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:06:31,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 123 transitions, 910 flow [2021-03-25 08:06:31,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 123 transitions, 893 flow, removed 4 selfloop flow, removed 1 redundant places. [2021-03-25 08:06:31,600 INFO L241 Difference]: Finished difference. Result has 98 places, 77 transitions, 533 flow [2021-03-25 08:06:31,600 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=533, PETRI_PLACES=98, PETRI_TRANSITIONS=77} [2021-03-25 08:06:31,601 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2021-03-25 08:06:31,601 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:31,601 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 77 transitions, 533 flow [2021-03-25 08:06:31,601 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 77 transitions, 533 flow [2021-03-25 08:06:31,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 77 transitions, 533 flow [2021-03-25 08:06:31,672 INFO L129 PetriNetUnfolder]: 309/1030 cut-off events. [2021-03-25 08:06:31,672 INFO L130 PetriNetUnfolder]: For 467/508 co-relation queries the response was YES. [2021-03-25 08:06:31,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 1030 events. 309/1030 cut-off events. For 467/508 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8659 event pairs, 0 based on Foata normal form. 0/903 useless extension candidates. Maximal degree in co-relation 1460. Up to 255 conditions per place. [2021-03-25 08:06:31,683 INFO L142 LiptonReduction]: Number of co-enabled transitions 1354 [2021-03-25 08:06:31,688 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:31,688 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:31,688 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 87 [2021-03-25 08:06:31,688 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 77 transitions, 533 flow [2021-03-25 08:06:31,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:31,689 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:31,689 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] [2021-03-25 08:06:31,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 08:06:31,689 INFO L428 AbstractCegarLoop]: === Iteration 11 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:31,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:31,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1170408855, now seen corresponding path program 4 times [2021-03-25 08:06:31,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:31,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692309951] [2021-03-25 08:06:31,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:31,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:31,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:31,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:31,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:06:31,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:31,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:06:31,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:06:31,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:06:31,825 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 08:06:31,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 08:06:31,843 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-25 08:06:31,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 08:06:31,869 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-25 08:06:31,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-25 08:06:31,902 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-25 08:06:31,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-25 08:06:31,950 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-03-25 08:06:31,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-25 08:06:32,003 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:06:32,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:06:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:32,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692309951] [2021-03-25 08:06:32,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:32,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:06:32,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231458154] [2021-03-25 08:06:32,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:06:32,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:32,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:06:32,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:06:32,050 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:06:32,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 77 transitions, 533 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:32,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:32,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:06:32,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:33,459 INFO L129 PetriNetUnfolder]: 6191/12223 cut-off events. [2021-03-25 08:06:33,460 INFO L130 PetriNetUnfolder]: For 42213/43203 co-relation queries the response was YES. [2021-03-25 08:06:33,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38593 conditions, 12223 events. 6191/12223 cut-off events. For 42213/43203 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 116549 event pairs, 1221 based on Foata normal form. 3/11749 useless extension candidates. Maximal degree in co-relation 38559. Up to 2507 conditions per place. [2021-03-25 08:06:33,639 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 95 selfloop transitions, 38 changer transitions 0/165 dead transitions. [2021-03-25 08:06:33,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 165 transitions, 1599 flow [2021-03-25 08:06:33,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:06:33,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:06:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:06:33,646 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:06:33,646 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:06:33,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:06:33,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:33,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:06:33,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:33,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:33,652 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:33,652 INFO L185 Difference]: Start difference. First operand has 98 places, 77 transitions, 533 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:06:33,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 165 transitions, 1599 flow [2021-03-25 08:06:33,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1509 flow, removed 36 selfloop flow, removed 1 redundant places. [2021-03-25 08:06:33,746 INFO L241 Difference]: Finished difference. Result has 116 places, 103 transitions, 935 flow [2021-03-25 08:06:33,746 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=935, PETRI_PLACES=116, PETRI_TRANSITIONS=103} [2021-03-25 08:06:33,746 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2021-03-25 08:06:33,746 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:33,747 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 103 transitions, 935 flow [2021-03-25 08:06:33,747 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 103 transitions, 935 flow [2021-03-25 08:06:33,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 103 transitions, 935 flow [2021-03-25 08:06:33,937 INFO L129 PetriNetUnfolder]: 673/2204 cut-off events. [2021-03-25 08:06:33,938 INFO L130 PetriNetUnfolder]: For 1922/2043 co-relation queries the response was YES. [2021-03-25 08:06:34,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 2204 events. 673/2204 cut-off events. For 1922/2043 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 21967 event pairs, 0 based on Foata normal form. 2/1939 useless extension candidates. Maximal degree in co-relation 3445. Up to 558 conditions per place. [2021-03-25 08:06:34,050 INFO L142 LiptonReduction]: Number of co-enabled transitions 2038 [2021-03-25 08:06:34,059 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:34,059 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:34,059 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 313 [2021-03-25 08:06:34,060 INFO L480 AbstractCegarLoop]: Abstraction has has 116 places, 103 transitions, 935 flow [2021-03-25 08:06:34,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:34,060 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:34,060 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] [2021-03-25 08:06:34,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 08:06:34,061 INFO L428 AbstractCegarLoop]: === Iteration 12 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:34,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:34,061 INFO L82 PathProgramCache]: Analyzing trace with hash -23664305, now seen corresponding path program 5 times [2021-03-25 08:06:34,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:34,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595776535] [2021-03-25 08:06:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:34,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:34,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:34,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:34,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:06:34,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:34,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:06:34,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:06:34,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:06:34,137 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 08:06:34,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 08:06:34,155 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-25 08:06:34,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 08:06:34,178 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-25 08:06:34,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-25 08:06:34,209 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-03-25 08:06:34,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-25 08:06:34,274 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 08:06:34,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 08:06:34,325 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:06:34,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:06:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:34,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595776535] [2021-03-25 08:06:34,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:34,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:06:34,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162221691] [2021-03-25 08:06:34,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:06:34,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:34,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:06:34,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:06:34,370 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:06:34,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 103 transitions, 935 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:34,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:34,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:06:34,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:36,378 INFO L129 PetriNetUnfolder]: 8395/16987 cut-off events. [2021-03-25 08:06:36,379 INFO L130 PetriNetUnfolder]: For 89519/91211 co-relation queries the response was YES. [2021-03-25 08:06:36,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61448 conditions, 16987 events. 8395/16987 cut-off events. For 89519/91211 co-relation queries the response was YES. Maximal size of possible extension queue 1519. Compared 174010 event pairs, 1388 based on Foata normal form. 3/16377 useless extension candidates. Maximal degree in co-relation 61405. Up to 3271 conditions per place. [2021-03-25 08:06:36,547 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 95 selfloop transitions, 61 changer transitions 0/188 dead transitions. [2021-03-25 08:06:36,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 188 transitions, 2189 flow [2021-03-25 08:06:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:06:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:06:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:06:36,550 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:06:36,550 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:06:36,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:06:36,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:36,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:06:36,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:36,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:36,555 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:36,555 INFO L185 Difference]: Start difference. First operand has 116 places, 103 transitions, 935 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:06:36,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 188 transitions, 2189 flow [2021-03-25 08:06:36,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 188 transitions, 2115 flow, removed 25 selfloop flow, removed 1 redundant places. [2021-03-25 08:06:36,920 INFO L241 Difference]: Finished difference. Result has 134 places, 129 transitions, 1489 flow [2021-03-25 08:06:36,920 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1489, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2021-03-25 08:06:36,921 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2021-03-25 08:06:36,921 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:36,921 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 129 transitions, 1489 flow [2021-03-25 08:06:36,921 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 129 transitions, 1489 flow [2021-03-25 08:06:36,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 134 places, 129 transitions, 1489 flow [2021-03-25 08:06:37,359 INFO L129 PetriNetUnfolder]: 1189/3815 cut-off events. [2021-03-25 08:06:37,360 INFO L130 PetriNetUnfolder]: For 5532/5801 co-relation queries the response was YES. [2021-03-25 08:06:37,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6611 conditions, 3815 events. 1189/3815 cut-off events. For 5532/5801 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 42025 event pairs, 0 based on Foata normal form. 10/3364 useless extension candidates. Maximal degree in co-relation 6560. Up to 989 conditions per place. [2021-03-25 08:06:37,427 INFO L142 LiptonReduction]: Number of co-enabled transitions 2716 [2021-03-25 08:06:37,436 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:37,436 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:37,436 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 515 [2021-03-25 08:06:37,437 INFO L480 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 1489 flow [2021-03-25 08:06:37,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:37,437 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:37,437 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] [2021-03-25 08:06:37,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 08:06:37,438 INFO L428 AbstractCegarLoop]: === Iteration 13 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:37,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:37,438 INFO L82 PathProgramCache]: Analyzing trace with hash 338622035, now seen corresponding path program 6 times [2021-03-25 08:06:37,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:37,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36431044] [2021-03-25 08:06:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:37,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:37,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:37,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:37,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:06:37,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:37,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:06:37,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:37,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 08:06:37,495 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-25 08:06:37,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 08:06:37,514 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-25 08:06:37,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-25 08:06:37,540 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-25 08:06:37,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-25 08:06:37,577 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-25 08:06:37,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-25 08:06:37,620 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-03-25 08:06:37,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-25 08:06:37,672 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:06:37,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:06:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:37,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36431044] [2021-03-25 08:06:37,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:37,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:06:37,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170546434] [2021-03-25 08:06:37,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:06:37,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:37,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:06:37,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:06:37,721 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:06:37,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 1489 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:37,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:37,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:06:37,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:40,870 INFO L129 PetriNetUnfolder]: 12630/27067 cut-off events. [2021-03-25 08:06:40,870 INFO L130 PetriNetUnfolder]: For 171427/173347 co-relation queries the response was YES. [2021-03-25 08:06:41,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97903 conditions, 27067 events. 12630/27067 cut-off events. For 171427/173347 co-relation queries the response was YES. Maximal size of possible extension queue 2754. Compared 313330 event pairs, 2625 based on Foata normal form. 2/25710 useless extension candidates. Maximal degree in co-relation 97851. Up to 4942 conditions per place. [2021-03-25 08:06:41,239 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 238 selfloop transitions, 56 changer transitions 0/326 dead transitions. [2021-03-25 08:06:41,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 326 transitions, 4833 flow [2021-03-25 08:06:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:06:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:06:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:06:41,243 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:06:41,243 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:06:41,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:06:41,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:41,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:06:41,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:41,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:41,248 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:41,248 INFO L185 Difference]: Start difference. First operand has 134 places, 129 transitions, 1489 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:06:41,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 326 transitions, 4833 flow [2021-03-25 08:06:42,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 326 transitions, 4667 flow, removed 73 selfloop flow, removed 1 redundant places. [2021-03-25 08:06:42,156 INFO L241 Difference]: Finished difference. Result has 152 places, 172 transitions, 2328 flow [2021-03-25 08:06:42,156 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2328, PETRI_PLACES=152, PETRI_TRANSITIONS=172} [2021-03-25 08:06:42,157 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2021-03-25 08:06:42,157 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:42,157 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 172 transitions, 2328 flow [2021-03-25 08:06:42,157 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 172 transitions, 2328 flow [2021-03-25 08:06:42,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 172 transitions, 2328 flow [2021-03-25 08:06:42,999 INFO L129 PetriNetUnfolder]: 2291/7581 cut-off events. [2021-03-25 08:06:42,999 INFO L130 PetriNetUnfolder]: For 16250/16785 co-relation queries the response was YES. [2021-03-25 08:06:43,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14108 conditions, 7581 events. 2291/7581 cut-off events. For 16250/16785 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 95407 event pairs, 0 based on Foata normal form. 22/6710 useless extension candidates. Maximal degree in co-relation 14048. Up to 1980 conditions per place. [2021-03-25 08:06:43,108 INFO L142 LiptonReduction]: Number of co-enabled transitions 3642 [2021-03-25 08:06:43,121 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:43,121 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:43,121 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 964 [2021-03-25 08:06:43,121 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 172 transitions, 2328 flow [2021-03-25 08:06:43,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:43,122 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:43,122 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] [2021-03-25 08:06:43,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 08:06:43,122 INFO L428 AbstractCegarLoop]: === Iteration 14 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:43,123 INFO L82 PathProgramCache]: Analyzing trace with hash 715675419, now seen corresponding path program 1 times [2021-03-25 08:06:43,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:43,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205905426] [2021-03-25 08:06:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:43,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:43,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:43,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:43,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:06:43,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:43,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:43,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205905426] [2021-03-25 08:06:43,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:43,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:06:43,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898513951] [2021-03-25 08:06:43,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:06:43,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:43,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:06:43,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:06:43,135 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-03-25 08:06:43,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 172 transitions, 2328 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:43,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:43,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-03-25 08:06:43,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:43,595 INFO L129 PetriNetUnfolder]: 0/3267 cut-off events. [2021-03-25 08:06:43,595 INFO L130 PetriNetUnfolder]: For 17139/17678 co-relation queries the response was YES. [2021-03-25 08:06:43,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10063 conditions, 3267 events. 0/3267 cut-off events. For 17139/17678 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 49452 event pairs, 0 based on Foata normal form. 623/3505 useless extension candidates. Maximal degree in co-relation 0. Up to 326 conditions per place. [2021-03-25 08:06:43,600 INFO L132 encePairwiseOnDemand]: 124/129 looper letters, 1 selfloop transitions, 1 changer transitions 8/158 dead transitions. [2021-03-25 08:06:43,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 158 transitions, 2290 flow [2021-03-25 08:06:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:06:43,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:06:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2021-03-25 08:06:43,603 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.937984496124031 [2021-03-25 08:06:43,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2021-03-25 08:06:43,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2021-03-25 08:06:43,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:43,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2021-03-25 08:06:43,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:43,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:43,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:43,605 INFO L185 Difference]: Start difference. First operand has 152 places, 172 transitions, 2328 flow. Second operand 3 states and 363 transitions. [2021-03-25 08:06:43,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 158 transitions, 2290 flow [2021-03-25 08:06:43,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 158 transitions, 2201 flow, removed 38 selfloop flow, removed 1 redundant places. [2021-03-25 08:06:43,682 INFO L241 Difference]: Finished difference. Result has 153 places, 150 transitions, 2107 flow [2021-03-25 08:06:43,682 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2107, PETRI_PLACES=153, PETRI_TRANSITIONS=150} [2021-03-25 08:06:43,683 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 97 predicate places. [2021-03-25 08:06:43,683 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:43,683 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 150 transitions, 2107 flow [2021-03-25 08:06:43,683 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 150 transitions, 2107 flow [2021-03-25 08:06:43,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 150 transitions, 2107 flow [2021-03-25 08:06:44,151 INFO L129 PetriNetUnfolder]: 0/3244 cut-off events. [2021-03-25 08:06:44,151 INFO L130 PetriNetUnfolder]: For 14614/15138 co-relation queries the response was YES. [2021-03-25 08:06:44,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9487 conditions, 3244 events. 0/3244 cut-off events. For 14614/15138 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 49132 event pairs, 0 based on Foata normal form. 21/2895 useless extension candidates. Maximal degree in co-relation 0. Up to 322 conditions per place. [2021-03-25 08:06:44,177 INFO L142 LiptonReduction]: Number of co-enabled transitions 1560 [2021-03-25 08:06:44,185 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:44,186 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:44,186 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 503 [2021-03-25 08:06:44,186 INFO L480 AbstractCegarLoop]: Abstraction has has 148 places, 150 transitions, 2107 flow [2021-03-25 08:06:44,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:44,186 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:44,186 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] [2021-03-25 08:06:44,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 08:06:44,187 INFO L428 AbstractCegarLoop]: === Iteration 15 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:44,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:44,187 INFO L82 PathProgramCache]: Analyzing trace with hash 247179585, now seen corresponding path program 7 times [2021-03-25 08:06:44,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:44,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850359382] [2021-03-25 08:06:44,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:44,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:44,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:44,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:44,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:06:44,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:44,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:06:44,233 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:06:44,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:06:44,246 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 08:06:44,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 08:06:44,264 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-25 08:06:44,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 08:06:44,287 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-25 08:06:44,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-25 08:06:44,318 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-25 08:06:44,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-25 08:06:44,357 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-03-25 08:06:44,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-25 08:06:44,408 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:06:44,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:06:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:44,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850359382] [2021-03-25 08:06:44,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:44,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:06:44,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052221372] [2021-03-25 08:06:44,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:06:44,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:44,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:06:44,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:06:44,453 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:06:44,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 150 transitions, 2107 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:44,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:44,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:06:44,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:47,603 INFO L129 PetriNetUnfolder]: 7678/19844 cut-off events. [2021-03-25 08:06:47,603 INFO L130 PetriNetUnfolder]: For 213944/216577 co-relation queries the response was YES. [2021-03-25 08:06:47,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104451 conditions, 19844 events. 7678/19844 cut-off events. For 213944/216577 co-relation queries the response was YES. Maximal size of possible extension queue 2088. Compared 243565 event pairs, 2748 based on Foata normal form. 4/19491 useless extension candidates. Maximal degree in co-relation 104390. Up to 6897 conditions per place. [2021-03-25 08:06:47,783 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 170 selfloop transitions, 63 changer transitions 1/252 dead transitions. [2021-03-25 08:06:47,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 252 transitions, 3839 flow [2021-03-25 08:06:47,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:06:47,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:06:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:06:47,786 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:06:47,786 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:06:47,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:06:47,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:47,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:06:47,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:47,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:47,792 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:47,792 INFO L185 Difference]: Start difference. First operand has 148 places, 150 transitions, 2107 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:06:47,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 252 transitions, 3839 flow [2021-03-25 08:06:48,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 252 transitions, 3701 flow, removed 67 selfloop flow, removed 9 redundant places. [2021-03-25 08:06:48,499 INFO L241 Difference]: Finished difference. Result has 158 places, 182 transitions, 2775 flow [2021-03-25 08:06:48,499 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2775, PETRI_PLACES=158, PETRI_TRANSITIONS=182} [2021-03-25 08:06:48,499 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 102 predicate places. [2021-03-25 08:06:48,499 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:48,499 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 182 transitions, 2775 flow [2021-03-25 08:06:48,500 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 182 transitions, 2775 flow [2021-03-25 08:06:48,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 157 places, 182 transitions, 2775 flow [2021-03-25 08:06:49,086 INFO L129 PetriNetUnfolder]: 0/4423 cut-off events. [2021-03-25 08:06:49,087 INFO L130 PetriNetUnfolder]: For 19328/20165 co-relation queries the response was YES. [2021-03-25 08:06:49,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11703 conditions, 4423 events. 0/4423 cut-off events. For 19328/20165 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 71266 event pairs, 0 based on Foata normal form. 25/3932 useless extension candidates. Maximal degree in co-relation 0. Up to 433 conditions per place. [2021-03-25 08:06:49,116 INFO L142 LiptonReduction]: Number of co-enabled transitions 1924 [2021-03-25 08:06:49,125 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:49,126 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:49,126 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 627 [2021-03-25 08:06:49,126 INFO L480 AbstractCegarLoop]: Abstraction has has 157 places, 182 transitions, 2775 flow [2021-03-25 08:06:49,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:49,127 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:49,127 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] [2021-03-25 08:06:49,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 08:06:49,127 INFO L428 AbstractCegarLoop]: === Iteration 16 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:49,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:49,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1738243283, now seen corresponding path program 8 times [2021-03-25 08:06:49,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:49,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910440503] [2021-03-25 08:06:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:49,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:49,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:49,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:49,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:06:49,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:49,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:06:49,183 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 08:06:49,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 08:06:49,203 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-25 08:06:49,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 08:06:49,224 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-25 08:06:49,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-25 08:06:49,251 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-25 08:06:49,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-25 08:06:49,283 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-25 08:06:49,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-25 08:06:49,322 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-03-25 08:06:49,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-25 08:06:49,379 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:06:49,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:06:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:49,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910440503] [2021-03-25 08:06:49,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:49,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:06:49,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109977677] [2021-03-25 08:06:49,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:06:49,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:49,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:06:49,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:06:49,432 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:06:49,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 182 transitions, 2775 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:49,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:49,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:06:49,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:06:54,348 INFO L129 PetriNetUnfolder]: 9339/29663 cut-off events. [2021-03-25 08:06:54,348 INFO L130 PetriNetUnfolder]: For 355660/358377 co-relation queries the response was YES. [2021-03-25 08:06:54,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150418 conditions, 29663 events. 9339/29663 cut-off events. For 355660/358377 co-relation queries the response was YES. Maximal size of possible extension queue 3042. Compared 437550 event pairs, 2961 based on Foata normal form. 6/28546 useless extension candidates. Maximal degree in co-relation 150356. Up to 7664 conditions per place. [2021-03-25 08:06:54,700 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 257 selfloop transitions, 123 changer transitions 2/400 dead transitions. [2021-03-25 08:06:54,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 400 transitions, 7225 flow [2021-03-25 08:06:54,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:06:54,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:06:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:06:54,703 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:06:54,704 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:06:54,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:06:54,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:06:54,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:06:54,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:54,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:54,709 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:54,709 INFO L185 Difference]: Start difference. First operand has 157 places, 182 transitions, 2775 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:06:54,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 400 transitions, 7225 flow [2021-03-25 08:06:55,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 400 transitions, 6993 flow, removed 62 selfloop flow, removed 2 redundant places. [2021-03-25 08:06:55,807 INFO L241 Difference]: Finished difference. Result has 174 places, 263 transitions, 4661 flow [2021-03-25 08:06:55,807 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4661, PETRI_PLACES=174, PETRI_TRANSITIONS=263} [2021-03-25 08:06:55,807 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 118 predicate places. [2021-03-25 08:06:55,807 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:06:55,807 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 263 transitions, 4661 flow [2021-03-25 08:06:55,808 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 263 transitions, 4661 flow [2021-03-25 08:06:55,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 173 places, 263 transitions, 4661 flow [2021-03-25 08:06:57,263 INFO L129 PetriNetUnfolder]: 0/8355 cut-off events. [2021-03-25 08:06:57,263 INFO L130 PetriNetUnfolder]: For 54295/56146 co-relation queries the response was YES. [2021-03-25 08:06:57,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24394 conditions, 8355 events. 0/8355 cut-off events. For 54295/56146 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 150077 event pairs, 0 based on Foata normal form. 5/7626 useless extension candidates. Maximal degree in co-relation 0. Up to 786 conditions per place. [2021-03-25 08:06:57,351 INFO L142 LiptonReduction]: Number of co-enabled transitions 2594 [2021-03-25 08:06:57,363 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:06:57,363 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:06:57,364 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1557 [2021-03-25 08:06:57,364 INFO L480 AbstractCegarLoop]: Abstraction has has 173 places, 263 transitions, 4661 flow [2021-03-25 08:06:57,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:57,365 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:06:57,365 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] [2021-03-25 08:06:57,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 08:06:57,365 INFO L428 AbstractCegarLoop]: === Iteration 17 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:06:57,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:06:57,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1114547593, now seen corresponding path program 9 times [2021-03-25 08:06:57,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:06:57,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991194492] [2021-03-25 08:06:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:06:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:06:57,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:57,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:06:57,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:57,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:06:57,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:57,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:06:57,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:06:57,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 08:06:57,424 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 08:06:57,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 08:06:57,445 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-25 08:06:57,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-25 08:06:57,469 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-25 08:06:57,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-25 08:06:57,513 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-03-25 08:06:57,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-25 08:06:57,566 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 08:06:57,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 08:06:57,642 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:06:57,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:06:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:06:57,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991194492] [2021-03-25 08:06:57,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:06:57,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:06:57,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908557343] [2021-03-25 08:06:57,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:06:57,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:06:57,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:06:57,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:06:57,687 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:06:57,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 263 transitions, 4661 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:06:57,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:06:57,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:06:57,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:07:05,055 INFO L129 PetriNetUnfolder]: 11632/39445 cut-off events. [2021-03-25 08:07:05,056 INFO L130 PetriNetUnfolder]: For 609931/614706 co-relation queries the response was YES. [2021-03-25 08:07:05,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 216250 conditions, 39445 events. 11632/39445 cut-off events. For 609931/614706 co-relation queries the response was YES. Maximal size of possible extension queue 4451. Compared 620378 event pairs, 3858 based on Foata normal form. 3/38259 useless extension candidates. Maximal degree in co-relation 216180. Up to 10973 conditions per place. [2021-03-25 08:07:05,931 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 310 selfloop transitions, 150 changer transitions 1/479 dead transitions. [2021-03-25 08:07:05,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 479 transitions, 9397 flow [2021-03-25 08:07:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:07:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:07:05,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:07:05,934 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:07:05,934 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:07:05,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:07:05,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:07:05,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:07:05,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:05,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:05,939 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:05,939 INFO L185 Difference]: Start difference. First operand has 173 places, 263 transitions, 4661 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:07:05,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 479 transitions, 9397 flow [2021-03-25 08:07:08,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 479 transitions, 9238 flow, removed 54 selfloop flow, removed 3 redundant places. [2021-03-25 08:07:08,419 INFO L241 Difference]: Finished difference. Result has 189 places, 333 transitions, 6637 flow [2021-03-25 08:07:08,420 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=4570, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6637, PETRI_PLACES=189, PETRI_TRANSITIONS=333} [2021-03-25 08:07:08,420 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 133 predicate places. [2021-03-25 08:07:08,420 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:07:08,420 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 333 transitions, 6637 flow [2021-03-25 08:07:08,420 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 333 transitions, 6637 flow [2021-03-25 08:07:08,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 188 places, 333 transitions, 6637 flow [2021-03-25 08:07:11,058 INFO L129 PetriNetUnfolder]: 0/12370 cut-off events. [2021-03-25 08:07:11,058 INFO L130 PetriNetUnfolder]: For 103972/107124 co-relation queries the response was YES. [2021-03-25 08:07:11,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38833 conditions, 12370 events. 0/12370 cut-off events. For 103972/107124 co-relation queries the response was YES. Maximal size of possible extension queue 1364. Compared 235511 event pairs, 0 based on Foata normal form. 19/11430 useless extension candidates. Maximal degree in co-relation 0. Up to 1150 conditions per place. [2021-03-25 08:07:11,225 INFO L142 LiptonReduction]: Number of co-enabled transitions 3048 [2021-03-25 08:07:11,249 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:07:11,249 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:07:11,249 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2829 [2021-03-25 08:07:11,249 INFO L480 AbstractCegarLoop]: Abstraction has has 188 places, 333 transitions, 6637 flow [2021-03-25 08:07:11,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:11,250 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:07:11,250 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] [2021-03-25 08:07:11,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 08:07:11,250 INFO L428 AbstractCegarLoop]: === Iteration 18 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:07:11,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:07:11,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1885401123, now seen corresponding path program 10 times [2021-03-25 08:07:11,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:07:11,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891374528] [2021-03-25 08:07:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:07:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:07:11,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:07:11,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:07:11,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:07:11,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:07:11,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:07:11,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:07:11,299 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:07:11,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:07:11,312 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-25 08:07:11,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 08:07:11,329 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-25 08:07:11,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-25 08:07:11,367 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-25 08:07:11,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-25 08:07:11,412 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-03-25 08:07:11,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-25 08:07:11,470 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 08:07:11,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 08:07:11,518 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:07:11,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:07:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:07:11,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891374528] [2021-03-25 08:07:11,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:07:11,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:07:11,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983926567] [2021-03-25 08:07:11,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:07:11,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:07:11,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:07:11,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:07:11,562 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:07:11,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 333 transitions, 6637 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:11,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:07:11,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:07:11,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:07:23,409 INFO L129 PetriNetUnfolder]: 12285/39665 cut-off events. [2021-03-25 08:07:23,410 INFO L130 PetriNetUnfolder]: For 815884/822675 co-relation queries the response was YES. [2021-03-25 08:07:23,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247857 conditions, 39665 events. 12285/39665 cut-off events. For 815884/822675 co-relation queries the response was YES. Maximal size of possible extension queue 4178. Compared 609845 event pairs, 6599 based on Foata normal form. 9/37895 useless extension candidates. Maximal degree in co-relation 247780. Up to 10920 conditions per place. [2021-03-25 08:07:24,211 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 340 selfloop transitions, 187 changer transitions 1/546 dead transitions. [2021-03-25 08:07:24,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 546 transitions, 12268 flow [2021-03-25 08:07:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:07:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:07:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:07:24,214 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:07:24,214 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:07:24,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:07:24,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:07:24,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:07:24,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:24,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:24,218 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:24,218 INFO L185 Difference]: Start difference. First operand has 188 places, 333 transitions, 6637 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:07:24,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 546 transitions, 12268 flow [2021-03-25 08:07:27,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 546 transitions, 11824 flow, removed 181 selfloop flow, removed 2 redundant places. [2021-03-25 08:07:27,849 INFO L241 Difference]: Finished difference. Result has 205 places, 401 transitions, 8817 flow [2021-03-25 08:07:27,849 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=6432, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8817, PETRI_PLACES=205, PETRI_TRANSITIONS=401} [2021-03-25 08:07:27,849 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 149 predicate places. [2021-03-25 08:07:27,849 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:07:27,850 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 401 transitions, 8817 flow [2021-03-25 08:07:27,850 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 401 transitions, 8817 flow [2021-03-25 08:07:27,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 204 places, 401 transitions, 8817 flow [2021-03-25 08:07:30,971 INFO L129 PetriNetUnfolder]: 0/13743 cut-off events. [2021-03-25 08:07:30,971 INFO L130 PetriNetUnfolder]: For 153984/158950 co-relation queries the response was YES. [2021-03-25 08:07:30,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46285 conditions, 13743 events. 0/13743 cut-off events. For 153984/158950 co-relation queries the response was YES. Maximal size of possible extension queue 1537. Compared 266349 event pairs, 0 based on Foata normal form. 21/12758 useless extension candidates. Maximal degree in co-relation 0. Up to 1278 conditions per place. [2021-03-25 08:07:31,083 INFO L142 LiptonReduction]: Number of co-enabled transitions 3468 [2021-03-25 08:07:31,106 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:07:31,106 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:07:31,106 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3257 [2021-03-25 08:07:31,106 INFO L480 AbstractCegarLoop]: Abstraction has has 204 places, 401 transitions, 8817 flow [2021-03-25 08:07:31,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:31,107 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:07:31,107 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] [2021-03-25 08:07:31,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 08:07:31,107 INFO L428 AbstractCegarLoop]: === Iteration 19 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:07:31,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:07:31,107 INFO L82 PathProgramCache]: Analyzing trace with hash -775744753, now seen corresponding path program 11 times [2021-03-25 08:07:31,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:07:31,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848072098] [2021-03-25 08:07:31,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:07:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:07:31,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:07:31,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:07:31,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:07:31,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:07:31,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:07:31,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:07:31,146 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-25 08:07:31,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 08:07:31,159 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 08:07:31,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 08:07:31,176 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-25 08:07:31,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-25 08:07:31,196 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-25 08:07:31,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-25 08:07:31,238 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-03-25 08:07:31,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-25 08:07:31,289 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 08:07:31,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 08:07:31,330 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:07:31,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:07:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:07:31,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848072098] [2021-03-25 08:07:31,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:07:31,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:07:31,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067541464] [2021-03-25 08:07:31,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:07:31,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:07:31,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:07:31,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:07:31,382 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:07:31,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 401 transitions, 8817 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:31,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:07:31,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:07:31,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:07:43,186 INFO L129 PetriNetUnfolder]: 12610/44436 cut-off events. [2021-03-25 08:07:43,186 INFO L130 PetriNetUnfolder]: For 994965/1005425 co-relation queries the response was YES. [2021-03-25 08:07:43,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 280417 conditions, 44436 events. 12610/44436 cut-off events. For 994965/1005425 co-relation queries the response was YES. Maximal size of possible extension queue 5074. Compared 721064 event pairs, 5660 based on Foata normal form. 28/43087 useless extension candidates. Maximal degree in co-relation 280332. Up to 12152 conditions per place. [2021-03-25 08:07:43,986 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 262 selfloop transitions, 250 changer transitions 1/531 dead transitions. [2021-03-25 08:07:43,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 531 transitions, 12430 flow [2021-03-25 08:07:43,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:07:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:07:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:07:43,988 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:07:43,988 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:07:43,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:07:43,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:07:43,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:07:43,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:43,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:43,992 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:43,992 INFO L185 Difference]: Start difference. First operand has 204 places, 401 transitions, 8817 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:07:43,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 531 transitions, 12430 flow [2021-03-25 08:07:48,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 531 transitions, 12066 flow, removed 113 selfloop flow, removed 2 redundant places. [2021-03-25 08:07:48,390 INFO L241 Difference]: Finished difference. Result has 221 places, 462 transitions, 10868 flow [2021-03-25 08:07:48,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=8596, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10868, PETRI_PLACES=221, PETRI_TRANSITIONS=462} [2021-03-25 08:07:48,391 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 165 predicate places. [2021-03-25 08:07:48,391 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:07:48,391 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 462 transitions, 10868 flow [2021-03-25 08:07:48,391 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 462 transitions, 10868 flow [2021-03-25 08:07:48,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 220 places, 462 transitions, 10868 flow [2021-03-25 08:07:52,501 INFO L129 PetriNetUnfolder]: 0/14718 cut-off events. [2021-03-25 08:07:52,501 INFO L130 PetriNetUnfolder]: For 198171/205264 co-relation queries the response was YES. [2021-03-25 08:07:52,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52672 conditions, 14718 events. 0/14718 cut-off events. For 198171/205264 co-relation queries the response was YES. Maximal size of possible extension queue 1638. Compared 288679 event pairs, 0 based on Foata normal form. 34/13664 useless extension candidates. Maximal degree in co-relation 0. Up to 1389 conditions per place. [2021-03-25 08:07:52,627 INFO L142 LiptonReduction]: Number of co-enabled transitions 4110 [2021-03-25 08:07:52,662 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:07:52,662 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:07:52,663 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4272 [2021-03-25 08:07:52,664 INFO L480 AbstractCegarLoop]: Abstraction has has 220 places, 462 transitions, 10868 flow [2021-03-25 08:07:52,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:52,665 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:07:52,665 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] [2021-03-25 08:07:52,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 08:07:52,665 INFO L428 AbstractCegarLoop]: === Iteration 20 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:07:52,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:07:52,665 INFO L82 PathProgramCache]: Analyzing trace with hash -853116425, now seen corresponding path program 12 times [2021-03-25 08:07:52,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:07:52,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942246659] [2021-03-25 08:07:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:07:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:07:52,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:07:52,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:07:52,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:07:52,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:07:52,708 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 08:07:52,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 08:07:52,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:07:52,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:07:52,730 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-25 08:07:52,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 08:07:52,746 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-25 08:07:52,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-25 08:07:52,782 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-25 08:07:52,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-25 08:07:52,823 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-03-25 08:07:52,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-25 08:07:52,868 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 08:07:52,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 08:07:52,925 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:07:52,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:07:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:07:52,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942246659] [2021-03-25 08:07:52,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:07:52,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:07:52,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43598673] [2021-03-25 08:07:52,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:07:52,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:07:52,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:07:52,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:07:52,962 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:07:52,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 462 transitions, 10868 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:07:52,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:07:52,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:07:52,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:08:08,290 INFO L129 PetriNetUnfolder]: 13738/45275 cut-off events. [2021-03-25 08:08:08,290 INFO L130 PetriNetUnfolder]: For 1301207/1318383 co-relation queries the response was YES. [2021-03-25 08:08:08,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 326158 conditions, 45275 events. 13738/45275 cut-off events. For 1301207/1318383 co-relation queries the response was YES. Maximal size of possible extension queue 5008. Compared 714042 event pairs, 5983 based on Foata normal form. 22/43972 useless extension candidates. Maximal degree in co-relation 326065. Up to 14765 conditions per place. [2021-03-25 08:08:09,245 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 280 selfloop transitions, 293 changer transitions 1/592 dead transitions. [2021-03-25 08:08:09,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 592 transitions, 15032 flow [2021-03-25 08:08:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:08:09,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:08:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:08:09,247 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:08:09,247 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:08:09,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:08:09,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:08:09,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:08:09,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:08:09,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:08:09,250 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:08:09,251 INFO L185 Difference]: Start difference. First operand has 220 places, 462 transitions, 10868 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:08:09,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 592 transitions, 15032 flow [2021-03-25 08:08:16,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 592 transitions, 14656 flow, removed 90 selfloop flow, removed 2 redundant places. [2021-03-25 08:08:16,878 INFO L241 Difference]: Finished difference. Result has 237 places, 530 transitions, 13590 flow [2021-03-25 08:08:16,879 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=10562, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13590, PETRI_PLACES=237, PETRI_TRANSITIONS=530} [2021-03-25 08:08:16,879 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 181 predicate places. [2021-03-25 08:08:16,879 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:08:16,879 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 530 transitions, 13590 flow [2021-03-25 08:08:16,879 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 530 transitions, 13590 flow [2021-03-25 08:08:16,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 236 places, 530 transitions, 13590 flow [2021-03-25 08:08:22,348 INFO L129 PetriNetUnfolder]: 0/15781 cut-off events. [2021-03-25 08:08:22,349 INFO L130 PetriNetUnfolder]: For 259634/271605 co-relation queries the response was YES. [2021-03-25 08:08:22,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58838 conditions, 15781 events. 0/15781 cut-off events. For 259634/271605 co-relation queries the response was YES. Maximal size of possible extension queue 1728. Compared 312841 event pairs, 0 based on Foata normal form. 61/14704 useless extension candidates. Maximal degree in co-relation 0. Up to 1515 conditions per place. [2021-03-25 08:08:22,491 INFO L142 LiptonReduction]: Number of co-enabled transitions 4504 [2021-03-25 08:08:22,529 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:08:22,529 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:08:22,529 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5650 [2021-03-25 08:08:22,529 INFO L480 AbstractCegarLoop]: Abstraction has has 236 places, 530 transitions, 13590 flow [2021-03-25 08:08:22,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:08:22,529 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:08:22,530 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] [2021-03-25 08:08:22,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-25 08:08:22,530 INFO L428 AbstractCegarLoop]: === Iteration 21 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:08:22,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:08:22,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1957122539, now seen corresponding path program 13 times [2021-03-25 08:08:22,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:08:22,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406236571] [2021-03-25 08:08:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:08:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:08:22,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:08:22,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:08:22,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:08:22,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:08:22,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:08:22,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:08:22,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:08:22,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 08:08:22,591 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-25 08:08:22,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-25 08:08:22,615 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-25 08:08:22,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-25 08:08:22,659 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-25 08:08:22,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-25 08:08:22,716 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-25 08:08:22,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-25 08:08:22,751 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-03-25 08:08:22,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-25 08:08:22,795 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:08:22,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:08:22,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:08:22,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406236571] [2021-03-25 08:08:22,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:08:22,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:08:22,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302318199] [2021-03-25 08:08:22,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:08:22,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:08:22,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:08:22,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:08:22,830 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:08:22,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 530 transitions, 13590 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:08:22,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:08:22,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:08:22,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:08:40,960 INFO L129 PetriNetUnfolder]: 14353/50563 cut-off events. [2021-03-25 08:08:40,961 INFO L130 PetriNetUnfolder]: For 1693097/1719529 co-relation queries the response was YES. [2021-03-25 08:08:41,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379677 conditions, 50563 events. 14353/50563 cut-off events. For 1693097/1719529 co-relation queries the response was YES. Maximal size of possible extension queue 5524. Compared 833314 event pairs, 6244 based on Foata normal form. 22/49165 useless extension candidates. Maximal degree in co-relation 379576. Up to 13267 conditions per place. [2021-03-25 08:08:42,204 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 502 selfloop transitions, 283 changer transitions 3/806 dead transitions. [2021-03-25 08:08:42,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 806 transitions, 21505 flow [2021-03-25 08:08:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:08:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:08:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:08:42,206 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:08:42,206 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:08:42,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:08:42,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:08:42,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:08:42,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:08:42,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:08:42,209 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:08:42,209 INFO L185 Difference]: Start difference. First operand has 236 places, 530 transitions, 13590 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:08:42,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 806 transitions, 21505 flow [2021-03-25 08:08:53,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 806 transitions, 21058 flow, removed 100 selfloop flow, removed 2 redundant places. [2021-03-25 08:08:53,981 INFO L241 Difference]: Finished difference. Result has 253 places, 587 transitions, 15570 flow [2021-03-25 08:08:53,981 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=13318, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15570, PETRI_PLACES=253, PETRI_TRANSITIONS=587} [2021-03-25 08:08:53,981 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 197 predicate places. [2021-03-25 08:08:53,981 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:08:53,981 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 587 transitions, 15570 flow [2021-03-25 08:08:53,982 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 587 transitions, 15570 flow [2021-03-25 08:08:53,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 252 places, 587 transitions, 15570 flow [2021-03-25 08:09:01,876 INFO L129 PetriNetUnfolder]: 0/19733 cut-off events. [2021-03-25 08:09:01,876 INFO L130 PetriNetUnfolder]: For 351520/368661 co-relation queries the response was YES. [2021-03-25 08:09:01,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75358 conditions, 19733 events. 0/19733 cut-off events. For 351520/368661 co-relation queries the response was YES. Maximal size of possible extension queue 2121. Compared 403622 event pairs, 0 based on Foata normal form. 146/18338 useless extension candidates. Maximal degree in co-relation 0. Up to 1979 conditions per place. [2021-03-25 08:09:02,279 INFO L142 LiptonReduction]: Number of co-enabled transitions 5130 [2021-03-25 08:09:02,327 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:09:02,327 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:09:02,327 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8346 [2021-03-25 08:09:02,328 INFO L480 AbstractCegarLoop]: Abstraction has has 252 places, 587 transitions, 15570 flow [2021-03-25 08:09:02,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:09:02,328 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:09:02,328 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] [2021-03-25 08:09:02,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-25 08:09:02,328 INFO L428 AbstractCegarLoop]: === Iteration 22 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:09:02,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:09:02,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1858571209, now seen corresponding path program 14 times [2021-03-25 08:09:02,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:09:02,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268732562] [2021-03-25 08:09:02,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:09:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:09:02,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:09:02,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:09:02,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:09:02,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:09:02,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:09:02,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:09:02,365 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:09:02,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:09:02,378 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 08:09:02,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 08:09:02,395 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-25 08:09:02,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 08:09:02,416 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-25 08:09:02,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-25 08:09:02,441 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-25 08:09:02,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-25 08:09:02,470 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 08:09:02,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 08:09:02,509 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:09:02,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:09:02,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:09:02,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268732562] [2021-03-25 08:09:02,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:09:02,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:09:02,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972109618] [2021-03-25 08:09:02,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:09:02,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:09:02,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:09:02,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:09:02,545 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:09:02,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 587 transitions, 15570 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:09:02,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:09:02,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:09:02,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:09:27,247 INFO L129 PetriNetUnfolder]: 15372/58818 cut-off events. [2021-03-25 08:09:27,248 INFO L130 PetriNetUnfolder]: For 2086576/2119702 co-relation queries the response was YES. [2021-03-25 08:09:28,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 444520 conditions, 58818 events. 15372/58818 cut-off events. For 2086576/2119702 co-relation queries the response was YES. Maximal size of possible extension queue 6450. Compared 1020562 event pairs, 6719 based on Foata normal form. 40/56821 useless extension candidates. Maximal degree in co-relation 444411. Up to 15495 conditions per place. [2021-03-25 08:09:28,696 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 439 selfloop transitions, 384 changer transitions 1/842 dead transitions. [2021-03-25 08:09:28,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 842 transitions, 22752 flow [2021-03-25 08:09:28,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:09:28,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:09:28,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:09:28,698 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:09:28,698 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:09:28,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:09:28,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:09:28,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:09:28,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:09:28,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:09:28,702 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:09:28,702 INFO L185 Difference]: Start difference. First operand has 252 places, 587 transitions, 15570 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:09:28,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 842 transitions, 22752 flow [2021-03-25 08:09:48,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 842 transitions, 22171 flow, removed 192 selfloop flow, removed 3 redundant places. [2021-03-25 08:09:48,672 INFO L241 Difference]: Finished difference. Result has 268 places, 710 transitions, 19535 flow [2021-03-25 08:09:48,672 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=15073, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19535, PETRI_PLACES=268, PETRI_TRANSITIONS=710} [2021-03-25 08:09:48,673 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 212 predicate places. [2021-03-25 08:09:48,673 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:09:48,673 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 268 places, 710 transitions, 19535 flow [2021-03-25 08:09:48,673 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 268 places, 710 transitions, 19535 flow [2021-03-25 08:09:48,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 267 places, 710 transitions, 19535 flow [2021-03-25 08:09:59,493 INFO L129 PetriNetUnfolder]: 0/23664 cut-off events. [2021-03-25 08:09:59,493 INFO L130 PetriNetUnfolder]: For 460733/482724 co-relation queries the response was YES. [2021-03-25 08:09:59,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92818 conditions, 23664 events. 0/23664 cut-off events. For 460733/482724 co-relation queries the response was YES. Maximal size of possible extension queue 2518. Compared 496817 event pairs, 0 based on Foata normal form. 279/22220 useless extension candidates. Maximal degree in co-relation 0. Up to 2357 conditions per place. [2021-03-25 08:09:59,726 INFO L142 LiptonReduction]: Number of co-enabled transitions 6112 [2021-03-25 08:09:59,792 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:09:59,792 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:09:59,792 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11119 [2021-03-25 08:09:59,793 INFO L480 AbstractCegarLoop]: Abstraction has has 267 places, 710 transitions, 19535 flow [2021-03-25 08:09:59,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:09:59,793 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:09:59,793 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] [2021-03-25 08:09:59,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-25 08:09:59,793 INFO L428 AbstractCegarLoop]: === Iteration 23 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:09:59,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:09:59,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1944996155, now seen corresponding path program 15 times [2021-03-25 08:09:59,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:09:59,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484609434] [2021-03-25 08:09:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:09:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:09:59,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:09:59,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:09:59,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:09:59,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:09:59,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:09:59,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:09:59,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:09:59,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 08:09:59,843 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-25 08:09:59,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 08:09:59,861 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-25 08:09:59,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-25 08:09:59,887 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-25 08:09:59,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-25 08:09:59,916 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-03-25 08:09:59,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-25 08:09:59,966 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 08:09:59,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 08:10:00,000 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:10:00,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:10:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:10:00,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484609434] [2021-03-25 08:10:00,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:10:00,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:10:00,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754753023] [2021-03-25 08:10:00,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:10:00,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:10:00,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:10:00,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:10:00,033 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:10:00,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 710 transitions, 19535 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:10:00,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:10:00,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:10:00,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:10:28,087 INFO L129 PetriNetUnfolder]: 15505/58876 cut-off events. [2021-03-25 08:10:28,087 INFO L130 PetriNetUnfolder]: For 2163906/2195815 co-relation queries the response was YES. [2021-03-25 08:10:29,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 453815 conditions, 58876 events. 15505/58876 cut-off events. For 2163906/2195815 co-relation queries the response was YES. Maximal size of possible extension queue 6406. Compared 1022019 event pairs, 6639 based on Foata normal form. 40/56669 useless extension candidates. Maximal degree in co-relation 453699. Up to 16108 conditions per place. [2021-03-25 08:10:29,712 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 764 selfloop transitions, 373 changer transitions 2/1157 dead transitions. [2021-03-25 08:10:29,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1157 transitions, 33375 flow [2021-03-25 08:10:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:10:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:10:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:10:29,714 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:10:29,714 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:10:29,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:10:29,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:10:29,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:10:29,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:10:29,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:10:29,718 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:10:29,718 INFO L185 Difference]: Start difference. First operand has 267 places, 710 transitions, 19535 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:10:29,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 1157 transitions, 33375 flow [2021-03-25 08:10:51,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 1157 transitions, 32267 flow, removed 456 selfloop flow, removed 2 redundant places. [2021-03-25 08:10:51,831 INFO L241 Difference]: Finished difference. Result has 284 places, 839 transitions, 23847 flow [2021-03-25 08:10:51,832 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=18947, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23847, PETRI_PLACES=284, PETRI_TRANSITIONS=839} [2021-03-25 08:10:51,832 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 228 predicate places. [2021-03-25 08:10:51,832 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:10:51,832 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 839 transitions, 23847 flow [2021-03-25 08:10:51,832 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 839 transitions, 23847 flow [2021-03-25 08:10:51,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 283 places, 839 transitions, 23847 flow [2021-03-25 08:11:04,165 INFO L129 PetriNetUnfolder]: 0/24625 cut-off events. [2021-03-25 08:11:04,165 INFO L130 PetriNetUnfolder]: For 519620/539266 co-relation queries the response was YES. [2021-03-25 08:11:04,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101116 conditions, 24625 events. 0/24625 cut-off events. For 519620/539266 co-relation queries the response was YES. Maximal size of possible extension queue 2727. Compared 519866 event pairs, 0 based on Foata normal form. 137/23037 useless extension candidates. Maximal degree in co-relation 0. Up to 2446 conditions per place. [2021-03-25 08:11:04,448 INFO L142 LiptonReduction]: Number of co-enabled transitions 7202 [2021-03-25 08:11:04,545 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:11:04,545 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:11:04,545 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12713 [2021-03-25 08:11:04,546 INFO L480 AbstractCegarLoop]: Abstraction has has 283 places, 839 transitions, 23847 flow [2021-03-25 08:11:04,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:11:04,546 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:11:04,546 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] [2021-03-25 08:11:04,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-25 08:11:04,546 INFO L428 AbstractCegarLoop]: === Iteration 24 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:11:04,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:11:04,547 INFO L82 PathProgramCache]: Analyzing trace with hash 122469419, now seen corresponding path program 16 times [2021-03-25 08:11:04,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:11:04,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217923921] [2021-03-25 08:11:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:11:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:11:04,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:11:04,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:11:04,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:11:04,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:11:04,574 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 08:11:04,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 08:11:04,583 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:11:04,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:11:04,595 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-25 08:11:04,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 08:11:04,612 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-25 08:11:04,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-25 08:11:04,634 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-25 08:11:04,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-25 08:11:04,662 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-03-25 08:11:04,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-25 08:11:04,716 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 08:11:04,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 08:11:04,752 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:11:04,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:11:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:11:04,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217923921] [2021-03-25 08:11:04,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:11:04,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:11:04,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748654642] [2021-03-25 08:11:04,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:11:04,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:11:04,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:11:04,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:11:04,785 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:11:04,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 839 transitions, 23847 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:11:04,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:11:04,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:11:04,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:11:37,685 INFO L129 PetriNetUnfolder]: 15482/60373 cut-off events. [2021-03-25 08:11:37,686 INFO L130 PetriNetUnfolder]: For 2417103/2457806 co-relation queries the response was YES. [2021-03-25 08:11:38,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 480691 conditions, 60373 events. 15482/60373 cut-off events. For 2417103/2457806 co-relation queries the response was YES. Maximal size of possible extension queue 6831. Compared 1053690 event pairs, 7836 based on Foata normal form. 62/58608 useless extension candidates. Maximal degree in co-relation 480567. Up to 13940 conditions per place. [2021-03-25 08:11:39,261 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 479 selfloop transitions, 559 changer transitions 2/1058 dead transitions. [2021-03-25 08:11:39,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 1058 transitions, 31003 flow [2021-03-25 08:11:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 08:11:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 08:11:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-03-25 08:11:39,271 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-03-25 08:11:39,271 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-03-25 08:11:39,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-03-25 08:11:39,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:11:39,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-03-25 08:11:39,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:11:39,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:11:39,275 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:11:39,275 INFO L185 Difference]: Start difference. First operand has 283 places, 839 transitions, 23847 flow. Second operand 11 states and 1253 transitions. [2021-03-25 08:11:39,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 1058 transitions, 31003 flow [2021-03-25 08:12:05,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 1058 transitions, 30063 flow, removed 372 selfloop flow, removed 2 redundant places. [2021-03-25 08:12:05,823 INFO L241 Difference]: Finished difference. Result has 300 places, 889 transitions, 26419 flow [2021-03-25 08:12:05,824 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=23069, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=509, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=26419, PETRI_PLACES=300, PETRI_TRANSITIONS=889} [2021-03-25 08:12:05,824 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 244 predicate places. [2021-03-25 08:12:05,824 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:12:05,824 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 300 places, 889 transitions, 26419 flow [2021-03-25 08:12:05,824 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 300 places, 889 transitions, 26419 flow [2021-03-25 08:12:05,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 299 places, 889 transitions, 26419 flow [2021-03-25 08:12:18,375 INFO L129 PetriNetUnfolder]: 0/25438 cut-off events. [2021-03-25 08:12:18,376 INFO L130 PetriNetUnfolder]: For 609079/634367 co-relation queries the response was YES. [2021-03-25 08:12:18,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108384 conditions, 25438 events. 0/25438 cut-off events. For 609079/634367 co-relation queries the response was YES. Maximal size of possible extension queue 2723. Compared 540290 event pairs, 0 based on Foata normal form. 151/23782 useless extension candidates. Maximal degree in co-relation 0. Up to 2532 conditions per place. [2021-03-25 08:12:18,644 INFO L142 LiptonReduction]: Number of co-enabled transitions 7674 [2021-03-25 08:12:18,744 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:12:18,744 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:12:18,744 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12920 [2021-03-25 08:12:18,744 INFO L480 AbstractCegarLoop]: Abstraction has has 299 places, 889 transitions, 26419 flow [2021-03-25 08:12:18,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:12:18,745 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:12:18,745 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] [2021-03-25 08:12:18,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-25 08:12:18,745 INFO L428 AbstractCegarLoop]: === Iteration 25 === [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.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 08:12:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:12:18,745 INFO L82 PathProgramCache]: Analyzing trace with hash 886203783, now seen corresponding path program 17 times [2021-03-25 08:12:18,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:12:18,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600129945] [2021-03-25 08:12:18,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:12:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:12:18,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:12:18,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:12:18,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:12:18,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:12:18,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:12:18,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:12:18,778 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:12:18,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:12:18,790 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-25 08:12:18,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 08:12:18,806 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-25 08:12:18,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-25 08:12:18,829 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-25 08:12:18,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-25 08:12:18,856 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-25 08:12:18,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-25 08:12:18,896 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-03-25 08:12:18,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-25 08:12:18,934 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-03-25 08:12:18,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:12:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:12:18,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600129945] [2021-03-25 08:12:18,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:12:18,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 08:12:18,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677117035] [2021-03-25 08:12:18,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 08:12:18,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:12:18,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 08:12:18,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-03-25 08:12:18,968 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-25 08:12:18,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 889 transitions, 26419 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:12:18,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:12:18,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-25 08:12:18,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand