/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 13:27:32,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 13:27:32,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 13:27:32,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 13:27:32,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 13:27:32,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 13:27:32,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 13:27:32,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 13:27:32,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 13:27:32,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 13:27:32,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 13:27:32,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 13:27:32,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 13:27:32,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 13:27:32,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 13:27:32,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 13:27:32,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 13:27:32,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 13:27:32,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 13:27:32,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 13:27:32,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 13:27:32,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 13:27:32,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 13:27:32,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 13:27:32,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 13:27:32,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 13:27:32,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 13:27:32,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 13:27:32,444 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 13:27:32,480 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 13:27:32,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 13:27:32,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 13:27:32,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 13:27:32,484 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 13:27:32,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 13:27:32,484 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 13:27:32,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 13:27:32,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 13:27:32,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 13:27:32,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 13:27:32,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 13:27:32,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 13:27:32,486 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 13:27:32,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 13:27:32,486 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 13:27:32,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 13:27:32,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 13:27:32,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 13:27:32,487 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 13:27:32,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 13:27:32,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:27:32,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 13:27:32,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 13:27:32,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 13:27:32,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 13:27:32,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 13:27:32,488 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 13:27:32,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 13:27:32,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 13:27:32,489 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 13:27:32,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 13:27:32,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 13:27:32,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 13:27:32,837 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 13:27:32,838 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 13:27:32,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl [2021-03-26 13:27:32,839 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl' [2021-03-26 13:27:32,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 13:27:32,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 13:27:32,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 13:27:32,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 13:27:32,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 13:27:32,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:27:32" (1/1) ... [2021-03-26 13:27:32,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:27:32" (1/1) ... [2021-03-26 13:27:32,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 13:27:32,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 13:27:32,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 13:27:32,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 13:27:32,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:27:32" (1/1) ... [2021-03-26 13:27:32,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:27:32" (1/1) ... [2021-03-26 13:27:32,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:27:32" (1/1) ... [2021-03-26 13:27:32,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:27:32" (1/1) ... [2021-03-26 13:27:32,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:27:32" (1/1) ... [2021-03-26 13:27:32,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:27:32" (1/1) ... [2021-03-26 13:27:32,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:27:32" (1/1) ... [2021-03-26 13:27:32,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 13:27:32,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 13:27:32,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 13:27:32,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 13:27:32,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:27:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:27:32,996 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-26 13:27:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-26 13:27:32,998 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-26 13:27:32,998 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-26 13:27:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-26 13:27:32,999 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-26 13:27:32,999 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-26 13:27:32,999 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-26 13:27:32,999 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-26 13:27:32,999 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-26 13:27:32,999 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-26 13:27:32,999 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-26 13:27:33,000 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-26 13:27:33,000 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-26 13:27:33,000 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-26 13:27:33,000 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-26 13:27:33,002 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-26 13:27:33,002 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-26 13:27:33,002 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 13:27:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 13:27:33,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 13:27:33,003 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-26 13:27:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-26 13:27:33,004 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-26 13:27:33,004 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-26 13:27:33,005 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-26 13:27:33,005 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-26 13:27:33,005 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-26 13:27:33,006 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-26 13:27:33,006 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-26 13:27:33,007 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-26 13:27:33,007 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-26 13:27:33,007 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-26 13:27:33,011 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-26 13:27:33,011 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-26 13:27:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-26 13:27:33,011 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-26 13:27:33,011 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-26 13:27:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-26 13:27:33,012 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-26 13:27:33,012 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-26 13:27:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-26 13:27:33,013 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 13:27:33,230 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 13:27:33,230 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 13:27:33,248 INFO L202 PluginConnector]: Adding new model example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:27:33 BoogieIcfgContainer [2021-03-26 13:27:33,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 13:27:33,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 13:27:33,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 13:27:33,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 13:27:33,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:27:32" (1/2) ... [2021-03-26 13:27:33,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9b5d2f and model type example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 01:27:33, skipping insertion in model container [2021-03-26 13:27:33,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:27:33" (2/2) ... [2021-03-26 13:27:33,254 INFO L111 eAbstractionObserver]: Analyzing ICFG example_13.bpl [2021-03-26 13:27:33,258 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 13:27:33,261 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 13:27:33,262 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 13:27:33,444 INFO L149 ThreadInstanceAdder]: Constructed 169 joinOtherThreadTransitions. [2021-03-26 13:27:33,472 INFO L253 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-03-26 13:27:33,498 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 13:27:33,499 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 13:27:33,499 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 13:27:33,499 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 13:27:33,499 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 13:27:33,499 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 13:27:33,499 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 13:27:33,499 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 13:27:33,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 224 transitions, 1020 flow [2021-03-26 13:27:38,357 INFO L129 PetriNetUnfolder]: 45057/53290 cut-off events. [2021-03-26 13:27:38,358 INFO L130 PetriNetUnfolder]: For 53248/53248 co-relation queries the response was YES. [2021-03-26 13:27:38,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106578 conditions, 53290 events. 45057/53290 cut-off events. For 53248/53248 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 211898 event pairs, 0 based on Foata normal form. 0/53289 useless extension candidates. Maximal degree in co-relation 49214. Up to 12012 conditions per place. [2021-03-26 13:27:38,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 224 transitions, 1020 flow [2021-03-26 13:27:39,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 209 transitions, 964 flow [2021-03-26 13:27:39,091 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:27:39,103 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 209 transitions, 964 flow [2021-03-26 13:27:39,106 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 209 transitions, 964 flow [2021-03-26 13:27:39,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 209 transitions, 964 flow [2021-03-26 13:27:42,375 INFO L129 PetriNetUnfolder]: 45057/53288 cut-off events. [2021-03-26 13:27:42,375 INFO L130 PetriNetUnfolder]: For 53248/53248 co-relation queries the response was YES. [2021-03-26 13:27:42,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106576 conditions, 53288 events. 45057/53288 cut-off events. For 53248/53248 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 223878 event pairs, 0 based on Foata normal form. 0/53288 useless extension candidates. Maximal degree in co-relation 49214. Up to 12012 conditions per place. [2021-03-26 13:27:43,353 INFO L142 LiptonReduction]: Number of co-enabled transitions 8424 [2021-03-26 13:27:43,731 INFO L154 LiptonReduction]: Checked pairs total: 2262 [2021-03-26 13:27:43,731 INFO L156 LiptonReduction]: Total number of compositions: 13 [2021-03-26 13:27:43,735 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4645 [2021-03-26 13:27:46,114 INFO L129 PetriNetUnfolder]: 45057/53274 cut-off events. [2021-03-26 13:27:46,115 INFO L130 PetriNetUnfolder]: For 53248/53248 co-relation queries the response was YES. [2021-03-26 13:27:46,115 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:27:46,116 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:27:46,116 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:27:46,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:27:46,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1397032023, now seen corresponding path program 1 times [2021-03-26 13:27:46,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:27:46,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368434164] [2021-03-26 13:27:46,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:27:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:27:46,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:46,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:27:46,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:46,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:27:46,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:46,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:27:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:27:46,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368434164] [2021-03-26 13:27:46,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:27:46,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:27:46,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850954248] [2021-03-26 13:27:46,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:27:46,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:27:46,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:27:46,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:27:46,330 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-26 13:27:46,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 196 transitions, 938 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:46,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:27:46,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-26 13:27:46,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:27:49,412 INFO L129 PetriNetUnfolder]: 27225/32933 cut-off events. [2021-03-26 13:27:49,413 INFO L130 PetriNetUnfolder]: For 43609/43609 co-relation queries the response was YES. [2021-03-26 13:27:49,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67467 conditions, 32933 events. 27225/32933 cut-off events. For 43609/43609 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 155055 event pairs, 0 based on Foata normal form. 2510/35443 useless extension candidates. Maximal degree in co-relation 49180. Up to 6435 conditions per place. [2021-03-26 13:27:49,699 INFO L132 encePairwiseOnDemand]: 229/237 looper letters, 6 selfloop transitions, 1 changer transitions 0/189 dead transitions. [2021-03-26 13:27:49,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 189 transitions, 917 flow [2021-03-26 13:27:49,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:27:49,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:27:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2021-03-26 13:27:49,711 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.960618846694796 [2021-03-26 13:27:49,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2021-03-26 13:27:49,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2021-03-26 13:27:49,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:27:49,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2021-03-26 13:27:49,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:49,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:49,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:49,728 INFO L185 Difference]: Start difference. First operand has 80 places, 196 transitions, 938 flow. Second operand 3 states and 683 transitions. [2021-03-26 13:27:49,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 189 transitions, 917 flow [2021-03-26 13:27:50,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 189 transitions, 567 flow, removed 0 selfloop flow, removed 26 redundant places. [2021-03-26 13:27:50,238 INFO L241 Difference]: Finished difference. Result has 56 places, 189 transitions, 555 flow [2021-03-26 13:27:50,239 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=555, PETRI_PLACES=56, PETRI_TRANSITIONS=189} [2021-03-26 13:27:50,241 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -24 predicate places. [2021-03-26 13:27:50,241 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:27:50,241 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 189 transitions, 555 flow [2021-03-26 13:27:50,241 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 189 transitions, 555 flow [2021-03-26 13:27:50,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 189 transitions, 555 flow [2021-03-26 13:27:51,518 INFO L129 PetriNetUnfolder]: 27225/32933 cut-off events. [2021-03-26 13:27:51,519 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:27:51,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32949 conditions, 32933 events. 27225/32933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 141858 event pairs, 0 based on Foata normal form. 0/32933 useless extension candidates. Maximal degree in co-relation 32930. Up to 6435 conditions per place. [2021-03-26 13:27:51,692 INFO L142 LiptonReduction]: Number of co-enabled transitions 3888 [2021-03-26 13:27:51,710 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:27:51,710 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:27:51,710 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1469 [2021-03-26 13:27:51,712 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 189 transitions, 555 flow [2021-03-26 13:27:51,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:51,712 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:27:51,712 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:27:51,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 13:27:51,713 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:27:51,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:27:51,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1916037355, now seen corresponding path program 1 times [2021-03-26 13:27:51,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:27:51,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523633819] [2021-03-26 13:27:51,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:27:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:27:51,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:51,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:27:51,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:51,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:27:51,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:51,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:27:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:27:51,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523633819] [2021-03-26 13:27:51,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:27:51,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:27:51,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584689642] [2021-03-26 13:27:51,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:27:51,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:27:51,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:27:51,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:27:51,744 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-26 13:27:51,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 189 transitions, 555 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:51,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:27:51,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-26 13:27:51,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:27:52,898 INFO L129 PetriNetUnfolder]: 27214/32921 cut-off events. [2021-03-26 13:27:52,898 INFO L130 PetriNetUnfolder]: For 2610/2610 co-relation queries the response was YES. [2021-03-26 13:27:53,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35548 conditions, 32921 events. 27214/32921 cut-off events. For 2610/2610 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 154692 event pairs, 0 based on Foata normal form. 1/32922 useless extension candidates. Maximal degree in co-relation 35527. Up to 6435 conditions per place. [2021-03-26 13:27:53,126 INFO L132 encePairwiseOnDemand]: 235/237 looper letters, 12 selfloop transitions, 1 changer transitions 0/188 dead transitions. [2021-03-26 13:27:53,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 188 transitions, 578 flow [2021-03-26 13:27:53,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:27:53,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:27:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2021-03-26 13:27:53,129 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.960618846694796 [2021-03-26 13:27:53,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2021-03-26 13:27:53,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2021-03-26 13:27:53,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:27:53,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2021-03-26 13:27:53,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:53,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:53,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:53,134 INFO L185 Difference]: Start difference. First operand has 56 places, 189 transitions, 555 flow. Second operand 3 states and 683 transitions. [2021-03-26 13:27:53,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 188 transitions, 578 flow [2021-03-26 13:27:53,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 188 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:27:53,149 INFO L241 Difference]: Finished difference. Result has 57 places, 188 transitions, 553 flow [2021-03-26 13:27:53,149 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=553, PETRI_PLACES=57, PETRI_TRANSITIONS=188} [2021-03-26 13:27:53,150 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -23 predicate places. [2021-03-26 13:27:53,150 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:27:53,150 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 188 transitions, 553 flow [2021-03-26 13:27:53,151 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 188 transitions, 553 flow [2021-03-26 13:27:53,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 188 transitions, 553 flow [2021-03-26 13:27:54,101 INFO L129 PetriNetUnfolder]: 27214/32921 cut-off events. [2021-03-26 13:27:54,101 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:27:54,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32938 conditions, 32921 events. 27214/32921 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 141673 event pairs, 0 based on Foata normal form. 0/32921 useless extension candidates. Maximal degree in co-relation 32931. Up to 6435 conditions per place. [2021-03-26 13:27:54,412 INFO L142 LiptonReduction]: Number of co-enabled transitions 3864 [2021-03-26 13:27:54,429 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:27:54,429 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:27:54,430 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1280 [2021-03-26 13:27:54,431 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 188 transitions, 553 flow [2021-03-26 13:27:54,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:54,431 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:27:54,431 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:27:54,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 13:27:54,432 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:27:54,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:27:54,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1008616503, now seen corresponding path program 1 times [2021-03-26 13:27:54,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:27:54,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48979016] [2021-03-26 13:27:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:27:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:27:54,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:54,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:27:54,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:54,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:27:54,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:54,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:27:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:27:54,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48979016] [2021-03-26 13:27:54,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:27:54,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:27:54,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366907839] [2021-03-26 13:27:54,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:27:54,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:27:54,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:27:54,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:27:54,481 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-26 13:27:54,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 188 transitions, 553 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:54,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:27:54,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-26 13:27:54,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:27:55,445 INFO L129 PetriNetUnfolder]: 27094/32789 cut-off events. [2021-03-26 13:27:55,446 INFO L130 PetriNetUnfolder]: For 2609/2609 co-relation queries the response was YES. [2021-03-26 13:27:55,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35406 conditions, 32789 events. 27094/32789 cut-off events. For 2609/2609 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 157057 event pairs, 0 based on Foata normal form. 11/32800 useless extension candidates. Maximal degree in co-relation 35398. Up to 6435 conditions per place. [2021-03-26 13:27:55,689 INFO L132 encePairwiseOnDemand]: 234/237 looper letters, 11 selfloop transitions, 1 changer transitions 0/186 dead transitions. [2021-03-26 13:27:55,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 186 transitions, 571 flow [2021-03-26 13:27:55,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:27:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:27:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2021-03-26 13:27:55,691 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.960618846694796 [2021-03-26 13:27:55,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2021-03-26 13:27:55,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2021-03-26 13:27:55,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:27:55,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2021-03-26 13:27:55,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:55,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:55,696 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:55,696 INFO L185 Difference]: Start difference. First operand has 57 places, 188 transitions, 553 flow. Second operand 3 states and 683 transitions. [2021-03-26 13:27:55,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 186 transitions, 571 flow [2021-03-26 13:27:55,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 186 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:27:55,701 INFO L241 Difference]: Finished difference. Result has 58 places, 186 transitions, 548 flow [2021-03-26 13:27:55,702 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=58, PETRI_TRANSITIONS=186} [2021-03-26 13:27:55,702 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -22 predicate places. [2021-03-26 13:27:55,702 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:27:55,702 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 186 transitions, 548 flow [2021-03-26 13:27:55,702 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 186 transitions, 548 flow [2021-03-26 13:27:55,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 186 transitions, 548 flow [2021-03-26 13:27:56,532 INFO L129 PetriNetUnfolder]: 27094/32789 cut-off events. [2021-03-26 13:27:56,532 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:27:56,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32807 conditions, 32789 events. 27094/32789 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 141707 event pairs, 0 based on Foata normal form. 0/32789 useless extension candidates. Maximal degree in co-relation 32800. Up to 6435 conditions per place. [2021-03-26 13:27:56,871 INFO L142 LiptonReduction]: Number of co-enabled transitions 3816 [2021-03-26 13:27:56,885 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:27:56,886 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:27:56,886 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1184 [2021-03-26 13:27:56,887 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 186 transitions, 548 flow [2021-03-26 13:27:56,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:56,888 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:27:56,888 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:27:56,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 13:27:56,888 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:27:56,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:27:56,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1663597145, now seen corresponding path program 1 times [2021-03-26 13:27:56,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:27:56,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035457345] [2021-03-26 13:27:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:27:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:27:56,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:56,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:27:56,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:56,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:27:56,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:56,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:27:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:27:56,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035457345] [2021-03-26 13:27:56,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:27:56,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:27:56,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056076469] [2021-03-26 13:27:56,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:27:56,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:27:56,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:27:56,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:27:56,914 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-26 13:27:56,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 186 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:56,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:27:56,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-26 13:27:56,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:27:57,750 INFO L129 PetriNetUnfolder]: 20098/24770 cut-off events. [2021-03-26 13:27:57,750 INFO L130 PetriNetUnfolder]: For 2598/2598 co-relation queries the response was YES. [2021-03-26 13:27:57,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26376 conditions, 24770 events. 20098/24770 cut-off events. For 2598/2598 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 119923 event pairs, 0 based on Foata normal form. 1012/25782 useless extension candidates. Maximal degree in co-relation 26368. Up to 6435 conditions per place. [2021-03-26 13:27:57,909 INFO L132 encePairwiseOnDemand]: 230/237 looper letters, 7 selfloop transitions, 1 changer transitions 0/180 dead transitions. [2021-03-26 13:27:57,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 180 transitions, 546 flow [2021-03-26 13:27:57,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:27:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:27:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2021-03-26 13:27:57,911 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.960618846694796 [2021-03-26 13:27:57,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2021-03-26 13:27:57,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2021-03-26 13:27:57,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:27:57,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2021-03-26 13:27:57,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:57,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:57,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:57,915 INFO L185 Difference]: Start difference. First operand has 58 places, 186 transitions, 548 flow. Second operand 3 states and 683 transitions. [2021-03-26 13:27:57,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 180 transitions, 546 flow [2021-03-26 13:27:57,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 180 transitions, 545 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:27:57,920 INFO L241 Difference]: Finished difference. Result has 59 places, 180 transitions, 531 flow [2021-03-26 13:27:57,921 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=531, PETRI_PLACES=59, PETRI_TRANSITIONS=180} [2021-03-26 13:27:57,921 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -21 predicate places. [2021-03-26 13:27:57,921 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:27:57,921 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 180 transitions, 531 flow [2021-03-26 13:27:57,921 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 180 transitions, 531 flow [2021-03-26 13:27:57,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 180 transitions, 531 flow [2021-03-26 13:27:58,648 INFO L129 PetriNetUnfolder]: 20098/24770 cut-off events. [2021-03-26 13:27:58,648 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:27:58,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24789 conditions, 24770 events. 20098/24770 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 109686 event pairs, 0 based on Foata normal form. 0/24770 useless extension candidates. Maximal degree in co-relation 24782. Up to 6435 conditions per place. [2021-03-26 13:27:58,920 INFO L142 LiptonReduction]: Number of co-enabled transitions 3672 [2021-03-26 13:27:58,932 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:27:58,932 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:27:58,932 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1011 [2021-03-26 13:27:58,933 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 180 transitions, 531 flow [2021-03-26 13:27:58,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:58,934 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:27:58,934 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:27:58,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 13:27:58,934 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:27:58,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:27:58,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1135598883, now seen corresponding path program 1 times [2021-03-26 13:27:58,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:27:58,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218806564] [2021-03-26 13:27:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:27:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:27:58,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:58,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:27:58,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:58,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:27:58,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:27:58,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:27:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:27:58,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218806564] [2021-03-26 13:27:58,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:27:58,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:27:58,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048303686] [2021-03-26 13:27:58,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:27:58,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:27:58,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:27:58,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:27:58,960 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-26 13:27:58,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 180 transitions, 531 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:58,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:27:58,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-26 13:27:58,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:27:59,406 INFO L129 PetriNetUnfolder]: 10028/12809 cut-off events. [2021-03-26 13:27:59,406 INFO L130 PetriNetUnfolder]: For 1961/1961 co-relation queries the response was YES. [2021-03-26 13:27:59,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13624 conditions, 12809 events. 10028/12809 cut-off events. For 1961/1961 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 63527 event pairs, 0 based on Foata normal form. 1167/13976 useless extension candidates. Maximal degree in co-relation 13616. Up to 2860 conditions per place. [2021-03-26 13:27:59,489 INFO L132 encePairwiseOnDemand]: 228/237 looper letters, 5 selfloop transitions, 1 changer transitions 0/172 dead transitions. [2021-03-26 13:27:59,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 172 transitions, 519 flow [2021-03-26 13:27:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:27:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:27:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2021-03-26 13:27:59,491 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.960618846694796 [2021-03-26 13:27:59,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2021-03-26 13:27:59,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2021-03-26 13:27:59,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:27:59,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2021-03-26 13:27:59,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:59,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:59,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:59,496 INFO L185 Difference]: Start difference. First operand has 59 places, 180 transitions, 531 flow. Second operand 3 states and 683 transitions. [2021-03-26 13:27:59,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 172 transitions, 519 flow [2021-03-26 13:27:59,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 172 transitions, 518 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:27:59,500 INFO L241 Difference]: Finished difference. Result has 60 places, 172 transitions, 508 flow [2021-03-26 13:27:59,500 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=60, PETRI_TRANSITIONS=172} [2021-03-26 13:27:59,500 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -20 predicate places. [2021-03-26 13:27:59,500 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:27:59,501 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 172 transitions, 508 flow [2021-03-26 13:27:59,501 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 172 transitions, 508 flow [2021-03-26 13:27:59,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 172 transitions, 508 flow [2021-03-26 13:27:59,885 INFO L129 PetriNetUnfolder]: 10028/12809 cut-off events. [2021-03-26 13:27:59,885 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:27:59,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12829 conditions, 12809 events. 10028/12809 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 57536 event pairs, 0 based on Foata normal form. 0/12809 useless extension candidates. Maximal degree in co-relation 12822. Up to 2860 conditions per place. [2021-03-26 13:27:59,982 INFO L142 LiptonReduction]: Number of co-enabled transitions 3480 [2021-03-26 13:27:59,990 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:27:59,991 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:27:59,991 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 491 [2021-03-26 13:27:59,992 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 172 transitions, 508 flow [2021-03-26 13:27:59,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:27:59,993 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:27:59,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:27:59,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 13:27:59,993 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:27:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:27:59,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1920693199, now seen corresponding path program 1 times [2021-03-26 13:27:59,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:27:59,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925991091] [2021-03-26 13:27:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:27:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:28:00,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:00,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:00,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:00,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:28:00,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:00,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:28:00,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925991091] [2021-03-26 13:28:00,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:28:00,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:28:00,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495740176] [2021-03-26 13:28:00,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:28:00,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:28:00,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:28:00,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:28:00,029 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-26 13:28:00,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 172 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:28:00,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-26 13:28:00,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:28:00,203 INFO L129 PetriNetUnfolder]: 3131/4198 cut-off events. [2021-03-26 13:28:00,204 INFO L130 PetriNetUnfolder]: For 1040/1040 co-relation queries the response was YES. [2021-03-26 13:28:00,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4221 conditions, 4198 events. 3131/4198 cut-off events. For 1040/1040 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 19986 event pairs, 0 based on Foata normal form. 1039/5237 useless extension candidates. Maximal degree in co-relation 4213. Up to 660 conditions per place. [2021-03-26 13:28:00,222 INFO L132 encePairwiseOnDemand]: 224/237 looper letters, 1 selfloop transitions, 1 changer transitions 0/148 dead transitions. [2021-03-26 13:28:00,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 148 transitions, 440 flow [2021-03-26 13:28:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:28:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:28:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2021-03-26 13:28:00,224 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.960618846694796 [2021-03-26 13:28:00,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2021-03-26 13:28:00,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2021-03-26 13:28:00,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:28:00,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2021-03-26 13:28:00,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,227 INFO L185 Difference]: Start difference. First operand has 60 places, 172 transitions, 508 flow. Second operand 3 states and 683 transitions. [2021-03-26 13:28:00,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 148 transitions, 440 flow [2021-03-26 13:28:00,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 148 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:28:00,231 INFO L241 Difference]: Finished difference. Result has 61 places, 148 transitions, 437 flow [2021-03-26 13:28:00,231 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=437, PETRI_PLACES=61, PETRI_TRANSITIONS=148} [2021-03-26 13:28:00,231 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -19 predicate places. [2021-03-26 13:28:00,232 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:28:00,232 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 148 transitions, 437 flow [2021-03-26 13:28:00,232 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 148 transitions, 437 flow [2021-03-26 13:28:00,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 148 transitions, 437 flow [2021-03-26 13:28:00,390 INFO L129 PetriNetUnfolder]: 3131/4198 cut-off events. [2021-03-26 13:28:00,391 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:28:00,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4219 conditions, 4198 events. 3131/4198 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 17831 event pairs, 0 based on Foata normal form. 0/4198 useless extension candidates. Maximal degree in co-relation 4212. Up to 660 conditions per place. [2021-03-26 13:28:00,420 INFO L142 LiptonReduction]: Number of co-enabled transitions 2928 [2021-03-26 13:28:00,426 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:28:00,426 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:28:00,427 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 195 [2021-03-26 13:28:00,428 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 148 transitions, 437 flow [2021-03-26 13:28:00,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,428 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:28:00,428 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:28:00,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 13:28:00,429 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:28:00,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:28:00,429 INFO L82 PathProgramCache]: Analyzing trace with hash -287933799, now seen corresponding path program 1 times [2021-03-26 13:28:00,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:28:00,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301385050] [2021-03-26 13:28:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:28:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:28:00,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:00,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:00,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:00,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:28:00,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:00,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:28:00,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301385050] [2021-03-26 13:28:00,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:28:00,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:28:00,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447792355] [2021-03-26 13:28:00,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:28:00,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:28:00,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:28:00,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:28:00,458 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-26 13:28:00,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 148 transitions, 437 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:28:00,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-26 13:28:00,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:28:00,521 INFO L129 PetriNetUnfolder]: 1080/1560 cut-off events. [2021-03-26 13:28:00,522 INFO L130 PetriNetUnfolder]: For 386/386 co-relation queries the response was YES. [2021-03-26 13:28:00,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 1560 events. 1080/1560 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6659 event pairs, 0 based on Foata normal form. 319/1879 useless extension candidates. Maximal degree in co-relation 1642. Up to 280 conditions per place. [2021-03-26 13:28:00,528 INFO L132 encePairwiseOnDemand]: 227/237 looper letters, 3 selfloop transitions, 1 changer transitions 0/139 dead transitions. [2021-03-26 13:28:00,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 139 transitions, 418 flow [2021-03-26 13:28:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:28:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:28:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2021-03-26 13:28:00,530 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9592123769338959 [2021-03-26 13:28:00,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2021-03-26 13:28:00,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2021-03-26 13:28:00,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:28:00,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2021-03-26 13:28:00,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,534 INFO L185 Difference]: Start difference. First operand has 61 places, 148 transitions, 437 flow. Second operand 3 states and 682 transitions. [2021-03-26 13:28:00,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 139 transitions, 418 flow [2021-03-26 13:28:00,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 139 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:28:00,537 INFO L241 Difference]: Finished difference. Result has 62 places, 139 transitions, 411 flow [2021-03-26 13:28:00,537 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=62, PETRI_TRANSITIONS=139} [2021-03-26 13:28:00,537 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -18 predicate places. [2021-03-26 13:28:00,537 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:28:00,538 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 139 transitions, 411 flow [2021-03-26 13:28:00,538 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 139 transitions, 411 flow [2021-03-26 13:28:00,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 139 transitions, 411 flow [2021-03-26 13:28:00,598 INFO L129 PetriNetUnfolder]: 1080/1560 cut-off events. [2021-03-26 13:28:00,598 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:28:00,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 1560 events. 1080/1560 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6292 event pairs, 0 based on Foata normal form. 0/1560 useless extension candidates. Maximal degree in co-relation 1575. Up to 280 conditions per place. [2021-03-26 13:28:00,611 INFO L142 LiptonReduction]: Number of co-enabled transitions 2712 [2021-03-26 13:28:00,617 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:28:00,617 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:28:00,618 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 81 [2021-03-26 13:28:00,618 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 139 transitions, 411 flow [2021-03-26 13:28:00,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,619 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:28:00,619 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:28:00,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 13:28:00,619 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:28:00,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:28:00,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1930560167, now seen corresponding path program 1 times [2021-03-26 13:28:00,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:28:00,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257222998] [2021-03-26 13:28:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:28:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:28:00,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:00,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:00,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:00,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:28:00,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:00,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:28:00,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257222998] [2021-03-26 13:28:00,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:28:00,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:28:00,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100416419] [2021-03-26 13:28:00,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:28:00,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:28:00,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:28:00,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:28:00,670 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-26 13:28:00,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 139 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:28:00,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-26 13:28:00,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:28:00,765 INFO L129 PetriNetUnfolder]: 940/1392 cut-off events. [2021-03-26 13:28:00,765 INFO L130 PetriNetUnfolder]: For 158/158 co-relation queries the response was YES. [2021-03-26 13:28:00,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 1392 events. 940/1392 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5996 event pairs, 0 based on Foata normal form. 21/1413 useless extension candidates. Maximal degree in co-relation 1545. Up to 280 conditions per place. [2021-03-26 13:28:00,770 INFO L132 encePairwiseOnDemand]: 233/237 looper letters, 9 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2021-03-26 13:28:00,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 136 transitions, 422 flow [2021-03-26 13:28:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:28:00,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:28:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2021-03-26 13:28:00,772 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9592123769338959 [2021-03-26 13:28:00,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2021-03-26 13:28:00,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2021-03-26 13:28:00,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:28:00,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2021-03-26 13:28:00,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,776 INFO L185 Difference]: Start difference. First operand has 62 places, 139 transitions, 411 flow. Second operand 3 states and 682 transitions. [2021-03-26 13:28:00,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 136 transitions, 422 flow [2021-03-26 13:28:00,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 136 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:28:00,778 INFO L241 Difference]: Finished difference. Result has 63 places, 136 transitions, 403 flow [2021-03-26 13:28:00,779 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=63, PETRI_TRANSITIONS=136} [2021-03-26 13:28:00,779 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -17 predicate places. [2021-03-26 13:28:00,779 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:28:00,779 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 136 transitions, 403 flow [2021-03-26 13:28:00,779 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 136 transitions, 403 flow [2021-03-26 13:28:00,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 136 transitions, 403 flow [2021-03-26 13:28:00,824 INFO L129 PetriNetUnfolder]: 940/1392 cut-off events. [2021-03-26 13:28:00,824 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:28:00,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1415 conditions, 1392 events. 940/1392 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5643 event pairs, 0 based on Foata normal form. 0/1392 useless extension candidates. Maximal degree in co-relation 1408. Up to 280 conditions per place. [2021-03-26 13:28:00,835 INFO L142 LiptonReduction]: Number of co-enabled transitions 2640 [2021-03-26 13:28:00,842 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:28:00,842 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:28:00,842 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 63 [2021-03-26 13:28:00,843 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 136 transitions, 403 flow [2021-03-26 13:28:00,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,844 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:28:00,844 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:28:00,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 13:28:00,844 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:28:00,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:28:00,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1269193419, now seen corresponding path program 1 times [2021-03-26 13:28:00,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:28:00,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626700306] [2021-03-26 13:28:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:28:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:28:00,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:00,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:00,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:00,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:28:00,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:00,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:28:00,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626700306] [2021-03-26 13:28:00,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:28:00,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:28:00,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067064533] [2021-03-26 13:28:00,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:28:00,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:28:00,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:28:00,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:28:00,865 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-26 13:28:00,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 136 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:28:00,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-26 13:28:00,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:28:00,922 INFO L129 PetriNetUnfolder]: 611/972 cut-off events. [2021-03-26 13:28:00,922 INFO L130 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2021-03-26 13:28:00,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 972 events. 611/972 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4185 event pairs, 0 based on Foata normal form. 70/1042 useless extension candidates. Maximal degree in co-relation 1056. Up to 165 conditions per place. [2021-03-26 13:28:00,927 INFO L132 encePairwiseOnDemand]: 231/237 looper letters, 7 selfloop transitions, 1 changer transitions 0/131 dead transitions. [2021-03-26 13:28:00,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 131 transitions, 404 flow [2021-03-26 13:28:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:28:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:28:00,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2021-03-26 13:28:00,929 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9592123769338959 [2021-03-26 13:28:00,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2021-03-26 13:28:00,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2021-03-26 13:28:00,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:28:00,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2021-03-26 13:28:00,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,933 INFO L185 Difference]: Start difference. First operand has 63 places, 136 transitions, 403 flow. Second operand 3 states and 682 transitions. [2021-03-26 13:28:00,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 131 transitions, 404 flow [2021-03-26 13:28:00,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 131 transitions, 403 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:28:00,936 INFO L241 Difference]: Finished difference. Result has 64 places, 131 transitions, 389 flow [2021-03-26 13:28:00,936 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=64, PETRI_TRANSITIONS=131} [2021-03-26 13:28:00,936 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -16 predicate places. [2021-03-26 13:28:00,936 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:28:00,937 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 131 transitions, 389 flow [2021-03-26 13:28:00,937 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 131 transitions, 389 flow [2021-03-26 13:28:00,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 131 transitions, 389 flow [2021-03-26 13:28:00,971 INFO L129 PetriNetUnfolder]: 611/972 cut-off events. [2021-03-26 13:28:00,971 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:28:00,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 972 events. 611/972 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3996 event pairs, 0 based on Foata normal form. 0/972 useless extension candidates. Maximal degree in co-relation 989. Up to 165 conditions per place. [2021-03-26 13:28:00,978 INFO L142 LiptonReduction]: Number of co-enabled transitions 2520 [2021-03-26 13:28:00,984 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:28:00,985 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:28:00,985 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 49 [2021-03-26 13:28:00,988 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 131 transitions, 389 flow [2021-03-26 13:28:00,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:00,988 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:28:00,989 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:28:00,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 13:28:00,989 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:28:00,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:28:00,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1323234069, now seen corresponding path program 1 times [2021-03-26 13:28:00,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:28:00,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223719888] [2021-03-26 13:28:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:28:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:28:01,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:01,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:01,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:01,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:28:01,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:01,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:28:01,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223719888] [2021-03-26 13:28:01,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:28:01,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:28:01,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014421579] [2021-03-26 13:28:01,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:28:01,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:28:01,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:28:01,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:28:01,024 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-26 13:28:01,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 131 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:28:01,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-26 13:28:01,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:28:01,067 INFO L129 PetriNetUnfolder]: 506/832 cut-off events. [2021-03-26 13:28:01,068 INFO L130 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2021-03-26 13:28:01,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 832 events. 506/832 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3634 event pairs, 0 based on Foata normal form. 20/852 useless extension candidates. Maximal degree in co-relation 917. Up to 165 conditions per place. [2021-03-26 13:28:01,071 INFO L132 encePairwiseOnDemand]: 232/237 looper letters, 8 selfloop transitions, 1 changer transitions 0/127 dead transitions. [2021-03-26 13:28:01,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 127 transitions, 395 flow [2021-03-26 13:28:01,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:28:01,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:28:01,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2021-03-26 13:28:01,072 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9592123769338959 [2021-03-26 13:28:01,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2021-03-26 13:28:01,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2021-03-26 13:28:01,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:28:01,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2021-03-26 13:28:01,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,076 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,076 INFO L185 Difference]: Start difference. First operand has 64 places, 131 transitions, 389 flow. Second operand 3 states and 682 transitions. [2021-03-26 13:28:01,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 127 transitions, 395 flow [2021-03-26 13:28:01,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 127 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:28:01,078 INFO L241 Difference]: Finished difference. Result has 65 places, 127 transitions, 378 flow [2021-03-26 13:28:01,078 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=65, PETRI_TRANSITIONS=127} [2021-03-26 13:28:01,079 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -15 predicate places. [2021-03-26 13:28:01,079 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:28:01,079 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 127 transitions, 378 flow [2021-03-26 13:28:01,079 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 127 transitions, 378 flow [2021-03-26 13:28:01,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 127 transitions, 378 flow [2021-03-26 13:28:01,101 INFO L129 PetriNetUnfolder]: 506/832 cut-off events. [2021-03-26 13:28:01,102 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:28:01,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 857 conditions, 832 events. 506/832 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3446 event pairs, 0 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 850. Up to 165 conditions per place. [2021-03-26 13:28:01,107 INFO L142 LiptonReduction]: Number of co-enabled transitions 2424 [2021-03-26 13:28:01,113 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:28:01,113 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:28:01,113 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-26 13:28:01,114 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 127 transitions, 378 flow [2021-03-26 13:28:01,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,114 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:28:01,114 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:28:01,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 13:28:01,115 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:28:01,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:28:01,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1494861249, now seen corresponding path program 1 times [2021-03-26 13:28:01,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:28:01,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17366298] [2021-03-26 13:28:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:28:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:28:01,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:01,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:01,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:01,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:28:01,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:01,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:28:01,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17366298] [2021-03-26 13:28:01,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:28:01,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:28:01,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284890222] [2021-03-26 13:28:01,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:28:01,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:28:01,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:28:01,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:28:01,134 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-26 13:28:01,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 127 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:28:01,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-26 13:28:01,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:28:01,158 INFO L129 PetriNetUnfolder]: 55/150 cut-off events. [2021-03-26 13:28:01,159 INFO L130 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2021-03-26 13:28:01,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 150 events. 55/150 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 418 event pairs, 0 based on Foata normal form. 66/216 useless extension candidates. Maximal degree in co-relation 170. Up to 20 conditions per place. [2021-03-26 13:28:01,159 INFO L132 encePairwiseOnDemand]: 225/237 looper letters, 1 selfloop transitions, 1 changer transitions 0/105 dead transitions. [2021-03-26 13:28:01,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 105 transitions, 316 flow [2021-03-26 13:28:01,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:28:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:28:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2021-03-26 13:28:01,161 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9592123769338959 [2021-03-26 13:28:01,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2021-03-26 13:28:01,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2021-03-26 13:28:01,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:28:01,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2021-03-26 13:28:01,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,165 INFO L185 Difference]: Start difference. First operand has 65 places, 127 transitions, 378 flow. Second operand 3 states and 682 transitions. [2021-03-26 13:28:01,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 105 transitions, 316 flow [2021-03-26 13:28:01,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 105 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:28:01,167 INFO L241 Difference]: Finished difference. Result has 66 places, 105 transitions, 313 flow [2021-03-26 13:28:01,167 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=66, PETRI_TRANSITIONS=105} [2021-03-26 13:28:01,168 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -14 predicate places. [2021-03-26 13:28:01,168 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:28:01,168 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 105 transitions, 313 flow [2021-03-26 13:28:01,168 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 105 transitions, 313 flow [2021-03-26 13:28:01,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 105 transitions, 313 flow [2021-03-26 13:28:01,174 INFO L129 PetriNetUnfolder]: 55/150 cut-off events. [2021-03-26 13:28:01,174 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:28:01,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 150 events. 55/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 403 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 169. Up to 20 conditions per place. [2021-03-26 13:28:01,175 INFO L142 LiptonReduction]: Number of co-enabled transitions 1258 [2021-03-26 13:28:01,179 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:28:01,179 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:28:01,179 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-26 13:28:01,179 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 105 transitions, 313 flow [2021-03-26 13:28:01,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,180 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:28:01,180 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:28:01,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 13:28:01,180 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:28:01,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:28:01,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1712896609, now seen corresponding path program 1 times [2021-03-26 13:28:01,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:28:01,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913148473] [2021-03-26 13:28:01,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:28:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:28:01,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:01,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:01,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:01,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:28:01,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:01,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:28:01,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913148473] [2021-03-26 13:28:01,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:28:01,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:28:01,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864214649] [2021-03-26 13:28:01,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:28:01,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:28:01,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:28:01,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:28:01,209 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 237 [2021-03-26 13:28:01,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 105 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:28:01,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 237 [2021-03-26 13:28:01,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:28:01,220 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2021-03-26 13:28:01,220 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-03-26 13:28:01,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 40 events. 0/40 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 10/50 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 13:28:01,221 INFO L132 encePairwiseOnDemand]: 226/237 looper letters, 1 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2021-03-26 13:28:01,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 40 transitions, 122 flow [2021-03-26 13:28:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:28:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:28:01,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2021-03-26 13:28:01,223 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9578059071729957 [2021-03-26 13:28:01,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2021-03-26 13:28:01,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2021-03-26 13:28:01,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:28:01,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2021-03-26 13:28:01,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,226 INFO L185 Difference]: Start difference. First operand has 66 places, 105 transitions, 313 flow. Second operand 3 states and 681 transitions. [2021-03-26 13:28:01,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 40 transitions, 122 flow [2021-03-26 13:28:01,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 40 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:28:01,227 INFO L241 Difference]: Finished difference. Result has 67 places, 40 transitions, 119 flow [2021-03-26 13:28:01,227 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=67, PETRI_TRANSITIONS=40} [2021-03-26 13:28:01,227 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -13 predicate places. [2021-03-26 13:28:01,227 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:28:01,227 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 40 transitions, 119 flow [2021-03-26 13:28:01,228 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 40 transitions, 119 flow [2021-03-26 13:28:01,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 40 transitions, 119 flow [2021-03-26 13:28:01,231 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2021-03-26 13:28:01,231 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:28:01,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-26 13:28:01,232 INFO L142 LiptonReduction]: Number of co-enabled transitions 468 [2021-03-26 13:28:01,233 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:28:01,233 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:28:01,233 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 13:28:01,233 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 40 transitions, 119 flow [2021-03-26 13:28:01,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:01,234 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:28:01,234 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:28:01,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-26 13:28:01,234 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:28:01,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:28:01,235 INFO L82 PathProgramCache]: Analyzing trace with hash -416277105, now seen corresponding path program 1 times [2021-03-26 13:28:01,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:28:01,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969487561] [2021-03-26 13:28:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:28:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:28:01,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:01,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:01,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:01,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:28:01,385 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:28:01,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:28:01,416 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:28:01,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:28:01,451 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:28:01,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:28:01,488 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:28:01,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:28:01,527 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:28:01,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:28:01,571 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-26 13:28:01,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-26 13:28:01,632 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-26 13:28:01,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 13:28:01,709 INFO L142 QuantifierPusher]: treesize reduction 54, result has 59.4 percent of original size [2021-03-26 13:28:01,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-26 13:28:01,803 INFO L142 QuantifierPusher]: treesize reduction 63, result has 58.0 percent of original size [2021-03-26 13:28:01,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-03-26 13:28:01,914 INFO L142 QuantifierPusher]: treesize reduction 81, result has 52.9 percent of original size [2021-03-26 13:28:01,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-26 13:28:02,035 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-03-26 13:28:02,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-26 13:28:02,125 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-03-26 13:28:02,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:28:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:28:02,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969487561] [2021-03-26 13:28:02,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:28:02,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-26 13:28:02,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56376586] [2021-03-26 13:28:02,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-26 13:28:02,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:28:02,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-26 13:28:02,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-03-26 13:28:02,215 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 237 [2021-03-26 13:28:02,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 40 transitions, 119 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:02,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:28:02,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 237 [2021-03-26 13:28:02,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:28:05,797 INFO L129 PetriNetUnfolder]: 61443/74062 cut-off events. [2021-03-26 13:28:05,798 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:28:06,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147831 conditions, 74062 events. 61443/74062 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4198. Compared 361876 event pairs, 20481 based on Foata normal form. 1/73084 useless extension candidates. Maximal degree in co-relation 147823. Up to 26625 conditions per place. [2021-03-26 13:28:06,734 INFO L132 encePairwiseOnDemand]: 223/237 looper letters, 90 selfloop transitions, 12 changer transitions 1/129 dead transitions. [2021-03-26 13:28:06,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 129 transitions, 503 flow [2021-03-26 13:28:06,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-26 13:28:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-26 13:28:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3239 transitions. [2021-03-26 13:28:06,740 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2021-03-26 13:28:06,740 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3239 transitions. [2021-03-26 13:28:06,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3239 transitions. [2021-03-26 13:28:06,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:28:06,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3239 transitions. [2021-03-26 13:28:06,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 215.93333333333334) internal successors, (3239), 15 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:06,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:06,752 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:06,752 INFO L185 Difference]: Start difference. First operand has 67 places, 40 transitions, 119 flow. Second operand 15 states and 3239 transitions. [2021-03-26 13:28:06,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 129 transitions, 503 flow [2021-03-26 13:28:06,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 129 transitions, 502 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:28:06,755 INFO L241 Difference]: Finished difference. Result has 93 places, 51 transitions, 213 flow [2021-03-26 13:28:06,756 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=213, PETRI_PLACES=93, PETRI_TRANSITIONS=51} [2021-03-26 13:28:06,756 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, 13 predicate places. [2021-03-26 13:28:06,756 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:28:06,756 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 51 transitions, 213 flow [2021-03-26 13:28:06,756 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 51 transitions, 213 flow [2021-03-26 13:28:06,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 51 transitions, 213 flow [2021-03-26 13:28:06,769 INFO L129 PetriNetUnfolder]: 0/174 cut-off events. [2021-03-26 13:28:06,770 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-26 13:28:06,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 174 events. 0/174 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 868 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2021-03-26 13:28:06,771 INFO L142 LiptonReduction]: Number of co-enabled transitions 708 [2021-03-26 13:28:06,773 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:28:06,773 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:28:06,773 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-26 13:28:06,773 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 51 transitions, 213 flow [2021-03-26 13:28:06,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:06,775 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:28:06,775 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:28:06,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-26 13:28:06,775 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:28:06,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:28:06,776 INFO L82 PathProgramCache]: Analyzing trace with hash 400787297, now seen corresponding path program 2 times [2021-03-26 13:28:06,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:28:06,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396697974] [2021-03-26 13:28:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:28:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:28:06,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:06,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:06,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:06,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:28:06,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:06,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:28:06,856 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:28:06,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:28:06,869 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:28:06,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:28:06,888 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:28:06,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:28:06,914 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:28:06,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:28:06,945 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:28:06,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:28:06,985 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 13:28:06,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:28:07,038 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-26 13:28:07,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 13:28:07,092 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 13:28:07,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:28:07,157 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-26 13:28:07,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-26 13:28:07,230 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-26 13:28:07,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-26 13:28:07,316 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-03-26 13:28:07,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:28:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:28:07,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396697974] [2021-03-26 13:28:07,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:28:07,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-26 13:28:07,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797535069] [2021-03-26 13:28:07,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-26 13:28:07,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:28:07,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-26 13:28:07,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-03-26 13:28:07,395 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 237 [2021-03-26 13:28:07,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 51 transitions, 213 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:07,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:28:07,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 237 [2021-03-26 13:28:07,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:28:14,573 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-03-26 13:28:15,044 INFO L129 PetriNetUnfolder]: 82982/114212 cut-off events. [2021-03-26 13:28:15,044 INFO L130 PetriNetUnfolder]: For 122886/123119 co-relation queries the response was YES. [2021-03-26 13:28:16,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323330 conditions, 114212 events. 82982/114212 cut-off events. For 122886/123119 co-relation queries the response was YES. Maximal size of possible extension queue 5315. Compared 783535 event pairs, 27651 based on Foata normal form. 1/113231 useless extension candidates. Maximal degree in co-relation 323309. Up to 36883 conditions per place. [2021-03-26 13:28:17,037 INFO L132 encePairwiseOnDemand]: 223/237 looper letters, 150 selfloop transitions, 21 changer transitions 3/200 dead transitions. [2021-03-26 13:28:17,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 200 transitions, 1289 flow [2021-03-26 13:28:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-26 13:28:17,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-26 13:28:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3239 transitions. [2021-03-26 13:28:17,042 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2021-03-26 13:28:17,042 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3239 transitions. [2021-03-26 13:28:17,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3239 transitions. [2021-03-26 13:28:17,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:28:17,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3239 transitions. [2021-03-26 13:28:17,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 215.93333333333334) internal successors, (3239), 15 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:17,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:17,053 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:17,053 INFO L185 Difference]: Start difference. First operand has 92 places, 51 transitions, 213 flow. Second operand 15 states and 3239 transitions. [2021-03-26 13:28:17,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 200 transitions, 1289 flow [2021-03-26 13:28:17,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 200 transitions, 1252 flow, removed 12 selfloop flow, removed 2 redundant places. [2021-03-26 13:28:17,237 INFO L241 Difference]: Finished difference. Result has 117 places, 71 transitions, 439 flow [2021-03-26 13:28:17,237 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=439, PETRI_PLACES=117, PETRI_TRANSITIONS=71} [2021-03-26 13:28:17,237 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, 37 predicate places. [2021-03-26 13:28:17,237 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:28:17,238 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 71 transitions, 439 flow [2021-03-26 13:28:17,238 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 71 transitions, 439 flow [2021-03-26 13:28:17,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 71 transitions, 439 flow [2021-03-26 13:28:17,312 INFO L129 PetriNetUnfolder]: 0/706 cut-off events. [2021-03-26 13:28:17,313 INFO L130 PetriNetUnfolder]: For 230/258 co-relation queries the response was YES. [2021-03-26 13:28:17,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 706 events. 0/706 cut-off events. For 230/258 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7239 event pairs, 0 based on Foata normal form. 0/621 useless extension candidates. Maximal degree in co-relation 0. Up to 76 conditions per place. [2021-03-26 13:28:17,318 INFO L142 LiptonReduction]: Number of co-enabled transitions 1086 [2021-03-26 13:28:17,320 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:28:17,320 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:28:17,321 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 84 [2021-03-26 13:28:17,321 INFO L480 AbstractCegarLoop]: Abstraction has has 116 places, 71 transitions, 439 flow [2021-03-26 13:28:17,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:17,322 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:28:17,322 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:28:17,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-26 13:28:17,322 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:28:17,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:28:17,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1051676889, now seen corresponding path program 3 times [2021-03-26 13:28:17,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:28:17,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561478256] [2021-03-26 13:28:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:28:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:28:17,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:17,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:17,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:17,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:28:17,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:17,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:28:17,397 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:28:17,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:28:17,410 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:28:17,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:28:17,432 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:28:17,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:28:17,456 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:28:17,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:28:17,487 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:28:17,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:28:17,528 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 13:28:17,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:28:17,574 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-26 13:28:17,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 13:28:17,634 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 13:28:17,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:28:17,706 INFO L142 QuantifierPusher]: treesize reduction 90, result has 49.2 percent of original size [2021-03-26 13:28:17,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-03-26 13:28:17,779 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-03-26 13:28:17,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-26 13:28:17,858 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-03-26 13:28:17,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:28:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:28:17,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561478256] [2021-03-26 13:28:17,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:28:17,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-26 13:28:17,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783800032] [2021-03-26 13:28:17,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-26 13:28:17,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:28:17,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-26 13:28:17,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-03-26 13:28:17,934 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 237 [2021-03-26 13:28:17,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 71 transitions, 439 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:17,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:28:17,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 237 [2021-03-26 13:28:17,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:28:40,713 INFO L129 PetriNetUnfolder]: 124016/180624 cut-off events. [2021-03-26 13:28:40,713 INFO L130 PetriNetUnfolder]: For 512035/516426 co-relation queries the response was YES. [2021-03-26 13:28:42,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 662284 conditions, 180624 events. 124016/180624 cut-off events. For 512035/516426 co-relation queries the response was YES. Maximal size of possible extension queue 10377. Compared 1499116 event pairs, 29693 based on Foata normal form. 1/179633 useless extension candidates. Maximal degree in co-relation 662251. Up to 63529 conditions per place. [2021-03-26 13:28:43,323 INFO L132 encePairwiseOnDemand]: 223/237 looper letters, 152 selfloop transitions, 42 changer transitions 1/221 dead transitions. [2021-03-26 13:28:43,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 221 transitions, 1853 flow [2021-03-26 13:28:43,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-26 13:28:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-26 13:28:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3239 transitions. [2021-03-26 13:28:43,329 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2021-03-26 13:28:43,329 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3239 transitions. [2021-03-26 13:28:43,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3239 transitions. [2021-03-26 13:28:43,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:28:43,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3239 transitions. [2021-03-26 13:28:43,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 215.93333333333334) internal successors, (3239), 15 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:43,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:43,339 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:43,339 INFO L185 Difference]: Start difference. First operand has 116 places, 71 transitions, 439 flow. Second operand 15 states and 3239 transitions. [2021-03-26 13:28:43,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 221 transitions, 1853 flow [2021-03-26 13:28:53,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 221 transitions, 1785 flow, removed 27 selfloop flow, removed 3 redundant places. [2021-03-26 13:28:53,182 INFO L241 Difference]: Finished difference. Result has 140 places, 104 transitions, 916 flow [2021-03-26 13:28:53,182 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=916, PETRI_PLACES=140, PETRI_TRANSITIONS=104} [2021-03-26 13:28:53,182 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, 60 predicate places. [2021-03-26 13:28:53,182 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:28:53,183 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 104 transitions, 916 flow [2021-03-26 13:28:53,183 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 104 transitions, 916 flow [2021-03-26 13:28:53,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 139 places, 104 transitions, 916 flow [2021-03-26 13:28:53,422 INFO L129 PetriNetUnfolder]: 0/1992 cut-off events. [2021-03-26 13:28:53,422 INFO L130 PetriNetUnfolder]: For 1636/1815 co-relation queries the response was YES. [2021-03-26 13:28:53,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3369 conditions, 1992 events. 0/1992 cut-off events. For 1636/1815 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 26360 event pairs, 0 based on Foata normal form. 3/1741 useless extension candidates. Maximal degree in co-relation 0. Up to 195 conditions per place. [2021-03-26 13:28:53,439 INFO L142 LiptonReduction]: Number of co-enabled transitions 1788 [2021-03-26 13:28:53,442 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:28:53,443 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:28:53,443 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 261 [2021-03-26 13:28:53,443 INFO L480 AbstractCegarLoop]: Abstraction has has 139 places, 104 transitions, 916 flow [2021-03-26 13:28:53,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:53,444 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:28:53,444 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:28:53,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-26 13:28:53,444 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:28:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:28:53,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1855409807, now seen corresponding path program 4 times [2021-03-26 13:28:53,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:28:53,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327458232] [2021-03-26 13:28:53,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:28:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:28:53,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:53,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:28:53,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:53,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:28:53,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:28:53,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:28:53,510 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:28:53,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:28:53,522 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:28:53,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:28:53,540 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:28:53,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:28:53,562 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:28:53,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:28:53,592 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:28:53,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:28:53,628 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-26 13:28:53,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:28:53,685 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-26 13:28:53,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 13:28:53,742 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-03-26 13:28:53,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-26 13:28:53,807 INFO L142 QuantifierPusher]: treesize reduction 90, result has 49.2 percent of original size [2021-03-26 13:28:53,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-03-26 13:28:53,883 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-03-26 13:28:53,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-26 13:28:53,960 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-03-26 13:28:53,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:28:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:28:54,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327458232] [2021-03-26 13:28:54,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:28:54,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-26 13:28:54,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039216841] [2021-03-26 13:28:54,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-26 13:28:54,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:28:54,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-26 13:28:54,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-03-26 13:28:54,040 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 237 [2021-03-26 13:28:54,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 104 transitions, 916 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:28:54,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:28:54,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 237 [2021-03-26 13:28:54,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:29:27,236 INFO L129 PetriNetUnfolder]: 169409/248969 cut-off events. [2021-03-26 13:29:27,236 INFO L130 PetriNetUnfolder]: For 1345372/1354226 co-relation queries the response was YES. [2021-03-26 13:29:30,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1126667 conditions, 248969 events. 169409/248969 cut-off events. For 1345372/1354226 co-relation queries the response was YES. Maximal size of possible extension queue 15179. Compared 2208981 event pairs, 48412 based on Foata normal form. 1/247782 useless extension candidates. Maximal degree in co-relation 1126623. Up to 85386 conditions per place. [2021-03-26 13:29:31,706 INFO L132 encePairwiseOnDemand]: 223/237 looper letters, 196 selfloop transitions, 63 changer transitions 1/286 dead transitions. [2021-03-26 13:29:31,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 286 transitions, 3088 flow [2021-03-26 13:29:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-26 13:29:31,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-26 13:29:31,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3239 transitions. [2021-03-26 13:29:31,710 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2021-03-26 13:29:31,710 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3239 transitions. [2021-03-26 13:29:31,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3239 transitions. [2021-03-26 13:29:31,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:29:31,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3239 transitions. [2021-03-26 13:29:31,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 215.93333333333334) internal successors, (3239), 15 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:31,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:31,718 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:29:31,718 INFO L185 Difference]: Start difference. First operand has 139 places, 104 transitions, 916 flow. Second operand 15 states and 3239 transitions. [2021-03-26 13:29:31,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 286 transitions, 3088 flow [2021-03-26 13:30:00,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 286 transitions, 3009 flow, removed 28 selfloop flow, removed 2 redundant places. [2021-03-26 13:30:00,505 INFO L241 Difference]: Finished difference. Result has 164 places, 153 transitions, 1747 flow [2021-03-26 13:30:00,505 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1747, PETRI_PLACES=164, PETRI_TRANSITIONS=153} [2021-03-26 13:30:00,505 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, 84 predicate places. [2021-03-26 13:30:00,505 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:30:00,505 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 153 transitions, 1747 flow [2021-03-26 13:30:00,505 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 153 transitions, 1747 flow [2021-03-26 13:30:00,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 163 places, 153 transitions, 1747 flow [2021-03-26 13:30:00,911 INFO L129 PetriNetUnfolder]: 0/3469 cut-off events. [2021-03-26 13:30:00,911 INFO L130 PetriNetUnfolder]: For 4851/5296 co-relation queries the response was YES. [2021-03-26 13:30:00,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6497 conditions, 3469 events. 0/3469 cut-off events. For 4851/5296 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 51252 event pairs, 0 based on Foata normal form. 13/3030 useless extension candidates. Maximal degree in co-relation 0. Up to 330 conditions per place. [2021-03-26 13:30:00,943 INFO L142 LiptonReduction]: Number of co-enabled transitions 2812 [2021-03-26 13:30:00,951 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:30:00,951 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:30:00,951 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 446 [2021-03-26 13:30:00,951 INFO L480 AbstractCegarLoop]: Abstraction has has 163 places, 153 transitions, 1747 flow [2021-03-26 13:30:00,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:30:00,952 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:30:00,953 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:30:00,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-26 13:30:00,953 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-26 13:30:00,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:30:00,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1005917905, now seen corresponding path program 5 times [2021-03-26 13:30:00,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:30:00,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201097213] [2021-03-26 13:30:00,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:30:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:30:00,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:30:00,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:30:00,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:30:00,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:30:01,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:30:01,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:30:01,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:30:01,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:30:01,021 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 13:30:01,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:30:01,037 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 13:30:01,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:30:01,057 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-26 13:30:01,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:30:01,092 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:30:01,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:30:01,130 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-03-26 13:30:01,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-26 13:30:01,177 INFO L142 QuantifierPusher]: treesize reduction 54, result has 55.4 percent of original size [2021-03-26 13:30:01,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-26 13:30:01,233 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-26 13:30:01,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:30:01,297 INFO L142 QuantifierPusher]: treesize reduction 72, result has 53.5 percent of original size [2021-03-26 13:30:01,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-26 13:30:01,355 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-26 13:30:01,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-26 13:30:01,433 INFO L142 QuantifierPusher]: treesize reduction 108, result has 47.3 percent of original size [2021-03-26 13:30:01,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:30:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:30:01,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201097213] [2021-03-26 13:30:01,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:30:01,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-26 13:30:01,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062520592] [2021-03-26 13:30:01,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-26 13:30:01,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:30:01,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-26 13:30:01,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-03-26 13:30:01,503 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 237 [2021-03-26 13:30:01,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 153 transitions, 1747 flow. Second operand has 15 states, 15 states have (on average 209.93333333333334) internal successors, (3149), 15 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:30:01,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:30:01,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 237 [2021-03-26 13:30:01,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand