/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 00:18:10,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 00:18:10,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 00:18:10,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 00:18:10,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 00:18:10,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 00:18:10,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 00:18:10,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 00:18:10,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 00:18:10,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 00:18:10,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 00:18:10,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 00:18:10,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 00:18:10,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 00:18:10,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 00:18:10,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 00:18:10,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 00:18:10,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 00:18:10,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 00:18:10,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 00:18:10,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 00:18:10,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 00:18:10,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 00:18:10,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 00:18:10,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 00:18:10,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 00:18:10,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 00:18:10,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 00:18:10,156 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-25 00:18:10,193 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 00:18:10,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 00:18:10,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 00:18:10,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 00:18:10,196 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 00:18:10,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 00:18:10,197 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 00:18:10,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 00:18:10,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 00:18:10,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 00:18:10,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 00:18:10,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 00:18:10,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 00:18:10,198 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 00:18:10,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 00:18:10,199 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 00:18:10,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 00:18:10,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 00:18:10,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 00:18:10,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 00:18:10,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 00:18:10,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:18:10,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 00:18:10,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 00:18:10,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 00:18:10,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 00:18:10,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 00:18:10,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 00:18:10,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 00:18:10,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 00:18:10,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 00:18:10,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 00:18:10,502 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 00:18:10,503 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 00:18:10,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-4.wvr.bpl [2021-03-25 00:18:10,504 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-4.wvr.bpl' [2021-03-25 00:18:10,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 00:18:10,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 00:18:10,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 00:18:10,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 00:18:10,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 00:18:10,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:10" (1/1) ... [2021-03-25 00:18:10,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:10" (1/1) ... [2021-03-25 00:18:10,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 00:18:10,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 00:18:10,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 00:18:10,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 00:18:10,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:10" (1/1) ... [2021-03-25 00:18:10,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:10" (1/1) ... [2021-03-25 00:18:10,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:10" (1/1) ... [2021-03-25 00:18:10,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:10" (1/1) ... [2021-03-25 00:18:10,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:10" (1/1) ... [2021-03-25 00:18:10,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:10" (1/1) ... [2021-03-25 00:18:10,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:10" (1/1) ... [2021-03-25 00:18:10,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 00:18:10,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 00:18:10,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 00:18:10,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 00:18:10,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:18:10,610 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 00:18:10,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 00:18:10,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 00:18:10,611 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 00:18:10,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 00:18:10,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 00:18:10,611 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 00:18:10,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 00:18:10,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 00:18:10,612 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 00:18:10,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 00:18:10,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 00:18:10,612 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-25 00:18:10,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-25 00:18:10,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-25 00:18:10,613 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 00:18:10,792 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 00:18:10,792 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 00:18:10,793 INFO L202 PluginConnector]: Adding new model ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:18:10 BoogieIcfgContainer [2021-03-25 00:18:10,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 00:18:10,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 00:18:10,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 00:18:10,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 00:18:10,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:10" (1/2) ... [2021-03-25 00:18:10,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5804b68d and model type ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:18:10, skipping insertion in model container [2021-03-25 00:18:10,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:18:10" (2/2) ... [2021-03-25 00:18:10,799 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-4.wvr.bpl [2021-03-25 00:18:10,803 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 00:18:10,807 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 00:18:10,807 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 00:18:10,844 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-25 00:18:10,858 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 00:18:10,874 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 00:18:10,874 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 00:18:10,874 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 00:18:10,875 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 00:18:10,875 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 00:18:10,875 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 00:18:10,875 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 00:18:10,875 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 00:18:10,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 38 transitions, 108 flow [2021-03-25 00:18:10,908 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-03-25 00:18:10,908 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 00:18:10,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 34 events. 0/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:18:10,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 38 transitions, 108 flow [2021-03-25 00:18:10,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 32 transitions, 88 flow [2021-03-25 00:18:10,914 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 00:18:10,924 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 32 transitions, 88 flow [2021-03-25 00:18:10,927 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 32 transitions, 88 flow [2021-03-25 00:18:10,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 32 transitions, 88 flow [2021-03-25 00:18:10,945 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-25 00:18:10,945 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 00:18:10,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 32 events. 0/32 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:18:10,949 INFO L142 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-25 00:18:11,819 INFO L154 LiptonReduction]: Checked pairs total: 618 [2021-03-25 00:18:11,819 INFO L156 LiptonReduction]: Total number of compositions: 12 [2021-03-25 00:18:11,821 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 907 [2021-03-25 00:18:11,843 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 00:18:11,843 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 00:18:11,844 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:11,844 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] [2021-03-25 00:18:11,844 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:11,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:11,856 INFO L82 PathProgramCache]: Analyzing trace with hash 807092125, now seen corresponding path program 1 times [2021-03-25 00:18:11,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:11,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196895258] [2021-03-25 00:18:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:11,985 INFO L142 QuantifierPusher]: treesize reduction 17, result has 43.3 percent of original size [2021-03-25 00:18:11,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 00:18:11,998 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-03-25 00:18:11,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-25 00:18:12,004 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-03-25 00:18:12,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-25 00:18:12,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:18:12,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:12,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:18:12,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:12,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196895258] [2021-03-25 00:18:12,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:12,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:18:12,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115831012] [2021-03-25 00:18:12,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:12,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:12,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:12,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:12,039 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 50 [2021-03-25 00:18:12,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 64 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:12,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 50 [2021-03-25 00:18:12,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:12,134 INFO L129 PetriNetUnfolder]: 231/433 cut-off events. [2021-03-25 00:18:12,134 INFO L130 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2021-03-25 00:18:12,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 433 events. 231/433 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2137 event pairs, 100 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 846. Up to 216 conditions per place. [2021-03-25 00:18:12,143 INFO L132 encePairwiseOnDemand]: 39/50 looper letters, 18 selfloop transitions, 9 changer transitions 1/37 dead transitions. [2021-03-25 00:18:12,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 154 flow [2021-03-25 00:18:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2021-03-25 00:18:12,153 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.696 [2021-03-25 00:18:12,153 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 174 transitions. [2021-03-25 00:18:12,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 174 transitions. [2021-03-25 00:18:12,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:12,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 174 transitions. [2021-03-25 00:18:12,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,162 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,163 INFO L185 Difference]: Start difference. First operand has 33 places, 20 transitions, 64 flow. Second operand 5 states and 174 transitions. [2021-03-25 00:18:12,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 154 flow [2021-03-25 00:18:12,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 37 transitions, 138 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-25 00:18:12,168 INFO L241 Difference]: Finished difference. Result has 32 places, 27 transitions, 112 flow [2021-03-25 00:18:12,170 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2021-03-25 00:18:12,170 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2021-03-25 00:18:12,170 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 112 flow [2021-03-25 00:18:12,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,171 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:12,171 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] [2021-03-25 00:18:12,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 00:18:12,171 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:12,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:12,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1384460157, now seen corresponding path program 2 times [2021-03-25 00:18:12,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:12,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109496859] [2021-03-25 00:18:12,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:12,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:12,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:12,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:12,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:12,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:12,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109496859] [2021-03-25 00:18:12,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:12,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:18:12,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250757769] [2021-03-25 00:18:12,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:12,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:12,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:12,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:12,216 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:12,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:12,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:12,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:12,389 INFO L129 PetriNetUnfolder]: 451/820 cut-off events. [2021-03-25 00:18:12,389 INFO L130 PetriNetUnfolder]: For 468/506 co-relation queries the response was YES. [2021-03-25 00:18:12,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 820 events. 451/820 cut-off events. For 468/506 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4494 event pairs, 95 based on Foata normal form. 20/836 useless extension candidates. Maximal degree in co-relation 2392. Up to 339 conditions per place. [2021-03-25 00:18:12,396 INFO L132 encePairwiseOnDemand]: 40/50 looper letters, 24 selfloop transitions, 29 changer transitions 0/62 dead transitions. [2021-03-25 00:18:12,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 62 transitions, 368 flow [2021-03-25 00:18:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:18:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:18:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2021-03-25 00:18:12,398 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6433333333333333 [2021-03-25 00:18:12,399 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 193 transitions. [2021-03-25 00:18:12,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 193 transitions. [2021-03-25 00:18:12,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:12,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 193 transitions. [2021-03-25 00:18:12,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,402 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,402 INFO L185 Difference]: Start difference. First operand has 32 places, 27 transitions, 112 flow. Second operand 6 states and 193 transitions. [2021-03-25 00:18:12,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 62 transitions, 368 flow [2021-03-25 00:18:12,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 338 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 00:18:12,405 INFO L241 Difference]: Finished difference. Result has 36 places, 51 transitions, 307 flow [2021-03-25 00:18:12,405 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=36, PETRI_TRANSITIONS=51} [2021-03-25 00:18:12,405 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2021-03-25 00:18:12,406 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 51 transitions, 307 flow [2021-03-25 00:18:12,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,406 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:12,406 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] [2021-03-25 00:18:12,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 00:18:12,406 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:12,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:12,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1516261411, now seen corresponding path program 3 times [2021-03-25 00:18:12,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:12,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117806491] [2021-03-25 00:18:12,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:12,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:12,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:12,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:12,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:12,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117806491] [2021-03-25 00:18:12,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:12,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:18:12,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555992333] [2021-03-25 00:18:12,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:12,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:12,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:12,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:12,477 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:12,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 51 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:12,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:12,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:12,615 INFO L129 PetriNetUnfolder]: 482/870 cut-off events. [2021-03-25 00:18:12,616 INFO L130 PetriNetUnfolder]: For 989/1066 co-relation queries the response was YES. [2021-03-25 00:18:12,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3415 conditions, 870 events. 482/870 cut-off events. For 989/1066 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4676 event pairs, 90 based on Foata normal form. 31/897 useless extension candidates. Maximal degree in co-relation 3354. Up to 697 conditions per place. [2021-03-25 00:18:12,624 INFO L132 encePairwiseOnDemand]: 42/50 looper letters, 50 selfloop transitions, 26 changer transitions 0/85 dead transitions. [2021-03-25 00:18:12,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 85 transitions, 686 flow [2021-03-25 00:18:12,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:12,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2021-03-25 00:18:12,627 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.628 [2021-03-25 00:18:12,627 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 157 transitions. [2021-03-25 00:18:12,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 157 transitions. [2021-03-25 00:18:12,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:12,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 157 transitions. [2021-03-25 00:18:12,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,632 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,632 INFO L185 Difference]: Start difference. First operand has 36 places, 51 transitions, 307 flow. Second operand 5 states and 157 transitions. [2021-03-25 00:18:12,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 85 transitions, 686 flow [2021-03-25 00:18:12,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 85 transitions, 665 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-03-25 00:18:12,640 INFO L241 Difference]: Finished difference. Result has 41 places, 72 transitions, 561 flow [2021-03-25 00:18:12,640 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=561, PETRI_PLACES=41, PETRI_TRANSITIONS=72} [2021-03-25 00:18:12,640 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2021-03-25 00:18:12,640 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 72 transitions, 561 flow [2021-03-25 00:18:12,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,641 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:12,641 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] [2021-03-25 00:18:12,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 00:18:12,641 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:12,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:12,642 INFO L82 PathProgramCache]: Analyzing trace with hash 399033173, now seen corresponding path program 4 times [2021-03-25 00:18:12,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:12,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523861209] [2021-03-25 00:18:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:12,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:12,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:12,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:12,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:12,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523861209] [2021-03-25 00:18:12,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:12,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:18:12,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809666451] [2021-03-25 00:18:12,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:12,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:12,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:12,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:12,683 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:12,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 72 transitions, 561 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:12,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:12,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:12,804 INFO L129 PetriNetUnfolder]: 471/867 cut-off events. [2021-03-25 00:18:12,804 INFO L130 PetriNetUnfolder]: For 1722/1823 co-relation queries the response was YES. [2021-03-25 00:18:12,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3708 conditions, 867 events. 471/867 cut-off events. For 1722/1823 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4739 event pairs, 121 based on Foata normal form. 34/897 useless extension candidates. Maximal degree in co-relation 3640. Up to 688 conditions per place. [2021-03-25 00:18:12,812 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 49 selfloop transitions, 32 changer transitions 0/90 dead transitions. [2021-03-25 00:18:12,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 90 transitions, 851 flow [2021-03-25 00:18:12,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:12,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2021-03-25 00:18:12,813 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.624 [2021-03-25 00:18:12,813 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 156 transitions. [2021-03-25 00:18:12,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 156 transitions. [2021-03-25 00:18:12,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:12,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 156 transitions. [2021-03-25 00:18:12,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,815 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,815 INFO L185 Difference]: Start difference. First operand has 41 places, 72 transitions, 561 flow. Second operand 5 states and 156 transitions. [2021-03-25 00:18:12,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 90 transitions, 851 flow [2021-03-25 00:18:12,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 90 transitions, 846 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 00:18:12,822 INFO L241 Difference]: Finished difference. Result has 46 places, 80 transitions, 731 flow [2021-03-25 00:18:12,822 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=731, PETRI_PLACES=46, PETRI_TRANSITIONS=80} [2021-03-25 00:18:12,822 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2021-03-25 00:18:12,822 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 80 transitions, 731 flow [2021-03-25 00:18:12,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,822 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:12,822 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] [2021-03-25 00:18:12,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 00:18:12,823 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:12,823 INFO L82 PathProgramCache]: Analyzing trace with hash -445238337, now seen corresponding path program 5 times [2021-03-25 00:18:12,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:12,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026658499] [2021-03-25 00:18:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:12,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:12,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:12,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:12,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:12,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:12,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:12,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026658499] [2021-03-25 00:18:12,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:12,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:18:12,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429101390] [2021-03-25 00:18:12,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:12,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:12,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:12,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:12,862 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:12,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 80 transitions, 731 flow. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:12,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:12,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:12,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:13,031 INFO L129 PetriNetUnfolder]: 488/920 cut-off events. [2021-03-25 00:18:13,032 INFO L130 PetriNetUnfolder]: For 2369/2473 co-relation queries the response was YES. [2021-03-25 00:18:13,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4222 conditions, 920 events. 488/920 cut-off events. For 2369/2473 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5209 event pairs, 73 based on Foata normal form. 54/970 useless extension candidates. Maximal degree in co-relation 4146. Up to 378 conditions per place. [2021-03-25 00:18:13,040 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 27 selfloop transitions, 71 changer transitions 0/107 dead transitions. [2021-03-25 00:18:13,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 107 transitions, 1183 flow [2021-03-25 00:18:13,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:18:13,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:18:13,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2021-03-25 00:18:13,041 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2021-03-25 00:18:13,041 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 194 transitions. [2021-03-25 00:18:13,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 194 transitions. [2021-03-25 00:18:13,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:13,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 194 transitions. [2021-03-25 00:18:13,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,044 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,044 INFO L185 Difference]: Start difference. First operand has 46 places, 80 transitions, 731 flow. Second operand 6 states and 194 transitions. [2021-03-25 00:18:13,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 107 transitions, 1183 flow [2021-03-25 00:18:13,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 107 transitions, 1142 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:18:13,051 INFO L241 Difference]: Finished difference. Result has 50 places, 96 transitions, 1060 flow [2021-03-25 00:18:13,051 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1060, PETRI_PLACES=50, PETRI_TRANSITIONS=96} [2021-03-25 00:18:13,052 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2021-03-25 00:18:13,052 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 96 transitions, 1060 flow [2021-03-25 00:18:13,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,052 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:13,052 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] [2021-03-25 00:18:13,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 00:18:13,052 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:13,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:13,056 INFO L82 PathProgramCache]: Analyzing trace with hash -231935479, now seen corresponding path program 6 times [2021-03-25 00:18:13,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:13,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153803396] [2021-03-25 00:18:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:13,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:13,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:13,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:13,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:13,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:13,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:13,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:13,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153803396] [2021-03-25 00:18:13,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:13,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:18:13,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912841787] [2021-03-25 00:18:13,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:18:13,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:13,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:18:13,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:18:13,145 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:13,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 96 transitions, 1060 flow. Second operand has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:13,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:13,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:13,383 INFO L129 PetriNetUnfolder]: 543/1054 cut-off events. [2021-03-25 00:18:13,383 INFO L130 PetriNetUnfolder]: For 3355/3459 co-relation queries the response was YES. [2021-03-25 00:18:13,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5410 conditions, 1054 events. 543/1054 cut-off events. For 3355/3459 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6342 event pairs, 81 based on Foata normal form. 28/1079 useless extension candidates. Maximal degree in co-relation 5336. Up to 445 conditions per place. [2021-03-25 00:18:13,393 INFO L132 encePairwiseOnDemand]: 40/50 looper letters, 28 selfloop transitions, 138 changer transitions 0/175 dead transitions. [2021-03-25 00:18:13,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 175 transitions, 2172 flow [2021-03-25 00:18:13,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:18:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:18:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 286 transitions. [2021-03-25 00:18:13,394 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6355555555555555 [2021-03-25 00:18:13,394 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 286 transitions. [2021-03-25 00:18:13,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 286 transitions. [2021-03-25 00:18:13,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:13,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 286 transitions. [2021-03-25 00:18:13,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,397 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,397 INFO L185 Difference]: Start difference. First operand has 50 places, 96 transitions, 1060 flow. Second operand 9 states and 286 transitions. [2021-03-25 00:18:13,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 175 transitions, 2172 flow [2021-03-25 00:18:13,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 175 transitions, 2035 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 00:18:13,407 INFO L241 Difference]: Finished difference. Result has 59 places, 162 transitions, 2141 flow [2021-03-25 00:18:13,407 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2141, PETRI_PLACES=59, PETRI_TRANSITIONS=162} [2021-03-25 00:18:13,407 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2021-03-25 00:18:13,407 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 162 transitions, 2141 flow [2021-03-25 00:18:13,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,408 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:13,408 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] [2021-03-25 00:18:13,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 00:18:13,408 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:13,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:13,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1066723373, now seen corresponding path program 7 times [2021-03-25 00:18:13,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:13,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59047215] [2021-03-25 00:18:13,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:13,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:13,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:13,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:13,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:13,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59047215] [2021-03-25 00:18:13,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:13,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:18:13,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28488352] [2021-03-25 00:18:13,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:13,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:13,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:13,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:13,435 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:13,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 162 transitions, 2141 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:13,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:13,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:13,645 INFO L129 PetriNetUnfolder]: 526/1050 cut-off events. [2021-03-25 00:18:13,645 INFO L130 PetriNetUnfolder]: For 6047/6155 co-relation queries the response was YES. [2021-03-25 00:18:13,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6468 conditions, 1050 events. 526/1050 cut-off events. For 6047/6155 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6566 event pairs, 143 based on Foata normal form. 53/1100 useless extension candidates. Maximal degree in co-relation 6387. Up to 822 conditions per place. [2021-03-25 00:18:13,656 INFO L132 encePairwiseOnDemand]: 42/50 looper letters, 107 selfloop transitions, 62 changer transitions 1/179 dead transitions. [2021-03-25 00:18:13,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 179 transitions, 2672 flow [2021-03-25 00:18:13,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2021-03-25 00:18:13,657 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.628 [2021-03-25 00:18:13,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 157 transitions. [2021-03-25 00:18:13,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 157 transitions. [2021-03-25 00:18:13,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:13,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 157 transitions. [2021-03-25 00:18:13,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,659 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,659 INFO L185 Difference]: Start difference. First operand has 59 places, 162 transitions, 2141 flow. Second operand 5 states and 157 transitions. [2021-03-25 00:18:13,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 179 transitions, 2672 flow [2021-03-25 00:18:13,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 179 transitions, 2629 flow, removed 19 selfloop flow, removed 1 redundant places. [2021-03-25 00:18:13,676 INFO L241 Difference]: Finished difference. Result has 63 places, 165 transitions, 2320 flow [2021-03-25 00:18:13,676 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2320, PETRI_PLACES=63, PETRI_TRANSITIONS=165} [2021-03-25 00:18:13,676 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2021-03-25 00:18:13,676 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 165 transitions, 2320 flow [2021-03-25 00:18:13,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,677 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:13,677 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] [2021-03-25 00:18:13,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 00:18:13,677 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:13,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:13,677 INFO L82 PathProgramCache]: Analyzing trace with hash -883345885, now seen corresponding path program 8 times [2021-03-25 00:18:13,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:13,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16452468] [2021-03-25 00:18:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:13,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:13,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:13,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:13,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:13,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:13,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:13,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:13,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16452468] [2021-03-25 00:18:13,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:13,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:13,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609843271] [2021-03-25 00:18:13,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:13,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:13,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:13,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:13,743 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:13,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 165 transitions, 2320 flow. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:13,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:13,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:13,976 INFO L129 PetriNetUnfolder]: 509/1009 cut-off events. [2021-03-25 00:18:13,977 INFO L130 PetriNetUnfolder]: For 5352/5382 co-relation queries the response was YES. [2021-03-25 00:18:13,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6281 conditions, 1009 events. 509/1009 cut-off events. For 5352/5382 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6146 event pairs, 81 based on Foata normal form. 16/1024 useless extension candidates. Maximal degree in co-relation 6198. Up to 429 conditions per place. [2021-03-25 00:18:13,987 INFO L132 encePairwiseOnDemand]: 40/50 looper letters, 23 selfloop transitions, 146 changer transitions 0/178 dead transitions. [2021-03-25 00:18:13,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 178 transitions, 2817 flow [2021-03-25 00:18:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:18:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:18:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2021-03-25 00:18:13,989 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.64 [2021-03-25 00:18:13,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 224 transitions. [2021-03-25 00:18:13,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 224 transitions. [2021-03-25 00:18:13,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:13,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 224 transitions. [2021-03-25 00:18:13,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,992 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:13,992 INFO L185 Difference]: Start difference. First operand has 63 places, 165 transitions, 2320 flow. Second operand 7 states and 224 transitions. [2021-03-25 00:18:13,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 178 transitions, 2817 flow [2021-03-25 00:18:14,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 178 transitions, 2752 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:18:14,012 INFO L241 Difference]: Finished difference. Result has 69 places, 171 transitions, 2738 flow [2021-03-25 00:18:14,012 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2738, PETRI_PLACES=69, PETRI_TRANSITIONS=171} [2021-03-25 00:18:14,012 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2021-03-25 00:18:14,012 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 171 transitions, 2738 flow [2021-03-25 00:18:14,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,013 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:14,013 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] [2021-03-25 00:18:14,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 00:18:14,013 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:14,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:14,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1663444577, now seen corresponding path program 9 times [2021-03-25 00:18:14,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:14,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916665831] [2021-03-25 00:18:14,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:14,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:14,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:14,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916665831] [2021-03-25 00:18:14,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:14,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:18:14,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631002558] [2021-03-25 00:18:14,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:14,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:14,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:14,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:14,063 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:14,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 171 transitions, 2738 flow. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:14,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:14,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:14,241 INFO L129 PetriNetUnfolder]: 354/734 cut-off events. [2021-03-25 00:18:14,241 INFO L130 PetriNetUnfolder]: For 4668/4702 co-relation queries the response was YES. [2021-03-25 00:18:14,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5104 conditions, 734 events. 354/734 cut-off events. For 4668/4702 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4201 event pairs, 71 based on Foata normal form. 58/791 useless extension candidates. Maximal degree in co-relation 5043. Up to 329 conditions per place. [2021-03-25 00:18:14,249 INFO L132 encePairwiseOnDemand]: 40/50 looper letters, 51 selfloop transitions, 110 changer transitions 0/170 dead transitions. [2021-03-25 00:18:14,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 170 transitions, 2922 flow [2021-03-25 00:18:14,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:18:14,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:18:14,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2021-03-25 00:18:14,251 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.64 [2021-03-25 00:18:14,251 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2021-03-25 00:18:14,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2021-03-25 00:18:14,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:14,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2021-03-25 00:18:14,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,252 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,252 INFO L185 Difference]: Start difference. First operand has 69 places, 171 transitions, 2738 flow. Second operand 6 states and 192 transitions. [2021-03-25 00:18:14,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 170 transitions, 2922 flow [2021-03-25 00:18:14,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 170 transitions, 2605 flow, removed 56 selfloop flow, removed 4 redundant places. [2021-03-25 00:18:14,274 INFO L241 Difference]: Finished difference. Result has 71 places, 159 transitions, 2424 flow [2021-03-25 00:18:14,274 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2424, PETRI_PLACES=71, PETRI_TRANSITIONS=159} [2021-03-25 00:18:14,274 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 38 predicate places. [2021-03-25 00:18:14,274 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 159 transitions, 2424 flow [2021-03-25 00:18:14,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,275 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:14,275 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] [2021-03-25 00:18:14,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 00:18:14,275 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:14,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:14,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1777021341, now seen corresponding path program 10 times [2021-03-25 00:18:14,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:14,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138318142] [2021-03-25 00:18:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:14,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:14,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:14,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138318142] [2021-03-25 00:18:14,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:14,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:18:14,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947236779] [2021-03-25 00:18:14,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:14,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:14,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:14,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:14,325 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:14,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 159 transitions, 2424 flow. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:14,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:14,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:14,492 INFO L129 PetriNetUnfolder]: 343/732 cut-off events. [2021-03-25 00:18:14,492 INFO L130 PetriNetUnfolder]: For 4945/4977 co-relation queries the response was YES. [2021-03-25 00:18:14,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5108 conditions, 732 events. 343/732 cut-off events. For 4945/4977 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4328 event pairs, 69 based on Foata normal form. 31/762 useless extension candidates. Maximal degree in co-relation 5045. Up to 329 conditions per place. [2021-03-25 00:18:14,504 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 51 selfloop transitions, 112 changer transitions 5/177 dead transitions. [2021-03-25 00:18:14,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 177 transitions, 2985 flow [2021-03-25 00:18:14,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:18:14,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:18:14,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2021-03-25 00:18:14,505 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6433333333333333 [2021-03-25 00:18:14,505 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 193 transitions. [2021-03-25 00:18:14,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 193 transitions. [2021-03-25 00:18:14,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:14,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 193 transitions. [2021-03-25 00:18:14,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,507 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,507 INFO L185 Difference]: Start difference. First operand has 71 places, 159 transitions, 2424 flow. Second operand 6 states and 193 transitions. [2021-03-25 00:18:14,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 177 transitions, 2985 flow [2021-03-25 00:18:14,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 177 transitions, 2807 flow, removed 18 selfloop flow, removed 4 redundant places. [2021-03-25 00:18:14,525 INFO L241 Difference]: Finished difference. Result has 72 places, 160 transitions, 2489 flow [2021-03-25 00:18:14,526 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2173, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2489, PETRI_PLACES=72, PETRI_TRANSITIONS=160} [2021-03-25 00:18:14,526 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 39 predicate places. [2021-03-25 00:18:14,526 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 160 transitions, 2489 flow [2021-03-25 00:18:14,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,527 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:14,527 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] [2021-03-25 00:18:14,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 00:18:14,527 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:14,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:14,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1051315629, now seen corresponding path program 11 times [2021-03-25 00:18:14,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:14,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709547878] [2021-03-25 00:18:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:14,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:14,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:14,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709547878] [2021-03-25 00:18:14,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:14,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:14,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797091512] [2021-03-25 00:18:14,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:14,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:14,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:14,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:14,581 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:14,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 160 transitions, 2489 flow. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:14,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:14,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:14,820 INFO L129 PetriNetUnfolder]: 350/780 cut-off events. [2021-03-25 00:18:14,820 INFO L130 PetriNetUnfolder]: For 5517/5543 co-relation queries the response was YES. [2021-03-25 00:18:14,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5424 conditions, 780 events. 350/780 cut-off events. For 5517/5543 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4891 event pairs, 70 based on Foata normal form. 31/810 useless extension candidates. Maximal degree in co-relation 5361. Up to 336 conditions per place. [2021-03-25 00:18:14,828 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 57 selfloop transitions, 127 changer transitions 10/203 dead transitions. [2021-03-25 00:18:14,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 203 transitions, 3493 flow [2021-03-25 00:18:14,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:18:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:18:14,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2021-03-25 00:18:14,830 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6475 [2021-03-25 00:18:14,830 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 259 transitions. [2021-03-25 00:18:14,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 259 transitions. [2021-03-25 00:18:14,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:14,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 259 transitions. [2021-03-25 00:18:14,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,832 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,832 INFO L185 Difference]: Start difference. First operand has 72 places, 160 transitions, 2489 flow. Second operand 8 states and 259 transitions. [2021-03-25 00:18:14,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 203 transitions, 3493 flow [2021-03-25 00:18:14,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 203 transitions, 3299 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-25 00:18:14,851 INFO L241 Difference]: Finished difference. Result has 75 places, 175 transitions, 2808 flow [2021-03-25 00:18:14,851 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2808, PETRI_PLACES=75, PETRI_TRANSITIONS=175} [2021-03-25 00:18:14,851 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 42 predicate places. [2021-03-25 00:18:14,852 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 175 transitions, 2808 flow [2021-03-25 00:18:14,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,852 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:14,852 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] [2021-03-25 00:18:14,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 00:18:14,852 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:14,852 INFO L82 PathProgramCache]: Analyzing trace with hash 671821357, now seen corresponding path program 12 times [2021-03-25 00:18:14,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:14,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036839870] [2021-03-25 00:18:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:14,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:14,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:14,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:14,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:14,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036839870] [2021-03-25 00:18:14,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:14,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:18:14,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405829362] [2021-03-25 00:18:14,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:18:14,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:14,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:18:14,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:18:14,912 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:14,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 175 transitions, 2808 flow. Second operand has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:14,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:14,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:14,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:15,149 INFO L129 PetriNetUnfolder]: 342/783 cut-off events. [2021-03-25 00:18:15,149 INFO L130 PetriNetUnfolder]: For 5660/5688 co-relation queries the response was YES. [2021-03-25 00:18:15,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5551 conditions, 783 events. 342/783 cut-off events. For 5660/5688 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5045 event pairs, 68 based on Foata normal form. 40/822 useless extension candidates. Maximal degree in co-relation 5488. Up to 308 conditions per place. [2021-03-25 00:18:15,163 INFO L132 encePairwiseOnDemand]: 40/50 looper letters, 28 selfloop transitions, 150 changer transitions 20/207 dead transitions. [2021-03-25 00:18:15,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 207 transitions, 3630 flow [2021-03-25 00:18:15,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:18:15,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:18:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 288 transitions. [2021-03-25 00:18:15,164 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.64 [2021-03-25 00:18:15,164 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 288 transitions. [2021-03-25 00:18:15,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 288 transitions. [2021-03-25 00:18:15,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:15,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 288 transitions. [2021-03-25 00:18:15,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.0) internal successors, (288), 9 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,166 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,166 INFO L185 Difference]: Start difference. First operand has 75 places, 175 transitions, 2808 flow. Second operand 9 states and 288 transitions. [2021-03-25 00:18:15,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 207 transitions, 3630 flow [2021-03-25 00:18:15,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 207 transitions, 3455 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-25 00:18:15,190 INFO L241 Difference]: Finished difference. Result has 82 places, 175 transitions, 2974 flow [2021-03-25 00:18:15,190 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2974, PETRI_PLACES=82, PETRI_TRANSITIONS=175} [2021-03-25 00:18:15,191 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 49 predicate places. [2021-03-25 00:18:15,191 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 175 transitions, 2974 flow [2021-03-25 00:18:15,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,191 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:15,191 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] [2021-03-25 00:18:15,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 00:18:15,191 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:15,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:15,191 INFO L82 PathProgramCache]: Analyzing trace with hash -625104549, now seen corresponding path program 13 times [2021-03-25 00:18:15,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:15,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695158739] [2021-03-25 00:18:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:15,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:15,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:15,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695158739] [2021-03-25 00:18:15,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:15,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:18:15,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695147762] [2021-03-25 00:18:15,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:15,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:15,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:15,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:15,232 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:15,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 175 transitions, 2974 flow. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:15,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:15,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:15,383 INFO L129 PetriNetUnfolder]: 286/700 cut-off events. [2021-03-25 00:18:15,383 INFO L130 PetriNetUnfolder]: For 5914/5942 co-relation queries the response was YES. [2021-03-25 00:18:15,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5262 conditions, 700 events. 286/700 cut-off events. For 5914/5942 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4576 event pairs, 75 based on Foata normal form. 28/727 useless extension candidates. Maximal degree in co-relation 5197. Up to 318 conditions per place. [2021-03-25 00:18:15,390 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 52 selfloop transitions, 110 changer transitions 10/181 dead transitions. [2021-03-25 00:18:15,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 181 transitions, 3338 flow [2021-03-25 00:18:15,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:18:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:18:15,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2021-03-25 00:18:15,391 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6433333333333333 [2021-03-25 00:18:15,391 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 193 transitions. [2021-03-25 00:18:15,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 193 transitions. [2021-03-25 00:18:15,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:15,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 193 transitions. [2021-03-25 00:18:15,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,394 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,394 INFO L185 Difference]: Start difference. First operand has 82 places, 175 transitions, 2974 flow. Second operand 6 states and 193 transitions. [2021-03-25 00:18:15,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 181 transitions, 3338 flow [2021-03-25 00:18:15,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 181 transitions, 3152 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-03-25 00:18:15,417 INFO L241 Difference]: Finished difference. Result has 83 places, 159 transitions, 2701 flow [2021-03-25 00:18:15,417 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2701, PETRI_PLACES=83, PETRI_TRANSITIONS=159} [2021-03-25 00:18:15,417 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 50 predicate places. [2021-03-25 00:18:15,417 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 159 transitions, 2701 flow [2021-03-25 00:18:15,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,418 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:15,418 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] [2021-03-25 00:18:15,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 00:18:15,418 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:15,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1698807625, now seen corresponding path program 14 times [2021-03-25 00:18:15,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:15,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795026919] [2021-03-25 00:18:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:15,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:15,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:15,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795026919] [2021-03-25 00:18:15,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:15,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:15,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45149807] [2021-03-25 00:18:15,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:15,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:15,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:15,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:15,468 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:15,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 159 transitions, 2701 flow. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:15,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:15,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:15,670 INFO L129 PetriNetUnfolder]: 241/621 cut-off events. [2021-03-25 00:18:15,671 INFO L130 PetriNetUnfolder]: For 5511/5539 co-relation queries the response was YES. [2021-03-25 00:18:15,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4616 conditions, 621 events. 241/621 cut-off events. For 5511/5539 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4046 event pairs, 75 based on Foata normal form. 28/648 useless extension candidates. Maximal degree in co-relation 4553. Up to 289 conditions per place. [2021-03-25 00:18:15,676 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 54 selfloop transitions, 97 changer transitions 16/176 dead transitions. [2021-03-25 00:18:15,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 176 transitions, 3208 flow [2021-03-25 00:18:15,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:18:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:18:15,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2021-03-25 00:18:15,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.645 [2021-03-25 00:18:15,677 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 258 transitions. [2021-03-25 00:18:15,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 258 transitions. [2021-03-25 00:18:15,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:15,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 258 transitions. [2021-03-25 00:18:15,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.25) internal successors, (258), 8 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,679 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,679 INFO L185 Difference]: Start difference. First operand has 83 places, 159 transitions, 2701 flow. Second operand 8 states and 258 transitions. [2021-03-25 00:18:15,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 176 transitions, 3208 flow [2021-03-25 00:18:15,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 176 transitions, 3040 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 00:18:15,699 INFO L241 Difference]: Finished difference. Result has 86 places, 143 transitions, 2407 flow [2021-03-25 00:18:15,699 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2404, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2407, PETRI_PLACES=86, PETRI_TRANSITIONS=143} [2021-03-25 00:18:15,700 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 53 predicate places. [2021-03-25 00:18:15,700 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 143 transitions, 2407 flow [2021-03-25 00:18:15,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,700 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:15,700 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] [2021-03-25 00:18:15,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 00:18:15,700 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:15,701 INFO L82 PathProgramCache]: Analyzing trace with hash -829265511, now seen corresponding path program 15 times [2021-03-25 00:18:15,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:15,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905567078] [2021-03-25 00:18:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:15,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:15,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:15,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:15,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:15,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905567078] [2021-03-25 00:18:15,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:15,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:18:15,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322561961] [2021-03-25 00:18:15,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:18:15,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:15,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:18:15,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:18:15,749 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:15,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 143 transitions, 2407 flow. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:15,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:15,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:15,982 INFO L129 PetriNetUnfolder]: 228/591 cut-off events. [2021-03-25 00:18:15,982 INFO L130 PetriNetUnfolder]: For 5151/5177 co-relation queries the response was YES. [2021-03-25 00:18:15,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4350 conditions, 591 events. 228/591 cut-off events. For 5151/5177 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3814 event pairs, 68 based on Foata normal form. 10/600 useless extension candidates. Maximal degree in co-relation 4287. Up to 227 conditions per place. [2021-03-25 00:18:15,987 INFO L132 encePairwiseOnDemand]: 40/50 looper letters, 27 selfloop transitions, 108 changer transitions 22/166 dead transitions. [2021-03-25 00:18:15,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 166 transitions, 2991 flow [2021-03-25 00:18:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 00:18:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 00:18:15,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 370 transitions. [2021-03-25 00:18:15,988 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2021-03-25 00:18:15,989 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 370 transitions. [2021-03-25 00:18:15,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 370 transitions. [2021-03-25 00:18:15,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:15,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 370 transitions. [2021-03-25 00:18:15,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 30.833333333333332) internal successors, (370), 12 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 50.0) internal successors, (650), 13 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,991 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 50.0) internal successors, (650), 13 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:15,991 INFO L185 Difference]: Start difference. First operand has 86 places, 143 transitions, 2407 flow. Second operand 12 states and 370 transitions. [2021-03-25 00:18:15,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 166 transitions, 2991 flow [2021-03-25 00:18:16,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 166 transitions, 2844 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-25 00:18:16,011 INFO L241 Difference]: Finished difference. Result has 93 places, 133 transitions, 2285 flow [2021-03-25 00:18:16,011 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2285, PETRI_PLACES=93, PETRI_TRANSITIONS=133} [2021-03-25 00:18:16,012 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 60 predicate places. [2021-03-25 00:18:16,012 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 133 transitions, 2285 flow [2021-03-25 00:18:16,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,012 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:16,012 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] [2021-03-25 00:18:16,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 00:18:16,012 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:16,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:16,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1581039687, now seen corresponding path program 16 times [2021-03-25 00:18:16,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:16,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006039355] [2021-03-25 00:18:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:16,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:16,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:16,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006039355] [2021-03-25 00:18:16,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:16,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:18:16,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81019866] [2021-03-25 00:18:16,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:18:16,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:16,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:18:16,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:18:16,054 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:16,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 133 transitions, 2285 flow. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:16,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:16,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:16,281 INFO L129 PetriNetUnfolder]: 206/539 cut-off events. [2021-03-25 00:18:16,281 INFO L130 PetriNetUnfolder]: For 5056/5144 co-relation queries the response was YES. [2021-03-25 00:18:16,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 539 events. 206/539 cut-off events. For 5056/5144 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3404 event pairs, 67 based on Foata normal form. 33/570 useless extension candidates. Maximal degree in co-relation 4009. Up to 213 conditions per place. [2021-03-25 00:18:16,286 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 29 selfloop transitions, 97 changer transitions 14/149 dead transitions. [2021-03-25 00:18:16,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 149 transitions, 2743 flow [2021-03-25 00:18:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 00:18:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 00:18:16,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 368 transitions. [2021-03-25 00:18:16,287 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2021-03-25 00:18:16,287 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 368 transitions. [2021-03-25 00:18:16,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 368 transitions. [2021-03-25 00:18:16,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:16,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 368 transitions. [2021-03-25 00:18:16,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 30.666666666666668) internal successors, (368), 12 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 50.0) internal successors, (650), 13 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,290 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 50.0) internal successors, (650), 13 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,290 INFO L185 Difference]: Start difference. First operand has 93 places, 133 transitions, 2285 flow. Second operand 12 states and 368 transitions. [2021-03-25 00:18:16,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 149 transitions, 2743 flow [2021-03-25 00:18:16,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 149 transitions, 2425 flow, removed 11 selfloop flow, removed 11 redundant places. [2021-03-25 00:18:16,311 INFO L241 Difference]: Finished difference. Result has 89 places, 121 transitions, 1954 flow [2021-03-25 00:18:16,311 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1954, PETRI_PLACES=89, PETRI_TRANSITIONS=121} [2021-03-25 00:18:16,312 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 56 predicate places. [2021-03-25 00:18:16,312 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 121 transitions, 1954 flow [2021-03-25 00:18:16,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,312 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:16,312 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] [2021-03-25 00:18:16,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 00:18:16,312 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:16,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1517578721, now seen corresponding path program 17 times [2021-03-25 00:18:16,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:16,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107932700] [2021-03-25 00:18:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:16,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:16,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:18:16,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:16,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107932700] [2021-03-25 00:18:16,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:16,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:16,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721389042] [2021-03-25 00:18:16,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:16,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:16,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:16,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:16,345 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:16,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 121 transitions, 1954 flow. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:16,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:16,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:16,477 INFO L129 PetriNetUnfolder]: 217/596 cut-off events. [2021-03-25 00:18:16,477 INFO L130 PetriNetUnfolder]: For 4287/4315 co-relation queries the response was YES. [2021-03-25 00:18:16,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 596 events. 217/596 cut-off events. For 4287/4315 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3897 event pairs, 15 based on Foata normal form. 23/618 useless extension candidates. Maximal degree in co-relation 3978. Up to 208 conditions per place. [2021-03-25 00:18:16,492 INFO L132 encePairwiseOnDemand]: 40/50 looper letters, 25 selfloop transitions, 122 changer transitions 1/157 dead transitions. [2021-03-25 00:18:16,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 157 transitions, 2562 flow [2021-03-25 00:18:16,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:18:16,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:18:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2021-03-25 00:18:16,493 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6371428571428571 [2021-03-25 00:18:16,493 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 223 transitions. [2021-03-25 00:18:16,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 223 transitions. [2021-03-25 00:18:16,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:16,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 223 transitions. [2021-03-25 00:18:16,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,495 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,495 INFO L185 Difference]: Start difference. First operand has 89 places, 121 transitions, 1954 flow. Second operand 7 states and 223 transitions. [2021-03-25 00:18:16,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 157 transitions, 2562 flow [2021-03-25 00:18:16,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 157 transitions, 2478 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-25 00:18:16,512 INFO L241 Difference]: Finished difference. Result has 95 places, 146 transitions, 2530 flow [2021-03-25 00:18:16,512 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2530, PETRI_PLACES=95, PETRI_TRANSITIONS=146} [2021-03-25 00:18:16,512 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 62 predicate places. [2021-03-25 00:18:16,512 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 146 transitions, 2530 flow [2021-03-25 00:18:16,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,513 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:16,513 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] [2021-03-25 00:18:16,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 00:18:16,513 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:16,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:16,513 INFO L82 PathProgramCache]: Analyzing trace with hash -317737443, now seen corresponding path program 18 times [2021-03-25 00:18:16,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:16,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639677463] [2021-03-25 00:18:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:16,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:16,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:18:16,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:16,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639677463] [2021-03-25 00:18:16,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:16,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:16,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710993615] [2021-03-25 00:18:16,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:16,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:16,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:16,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:16,545 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:16,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 146 transitions, 2530 flow. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:16,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:16,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:16,684 INFO L129 PetriNetUnfolder]: 207/592 cut-off events. [2021-03-25 00:18:16,684 INFO L130 PetriNetUnfolder]: For 5898/5944 co-relation queries the response was YES. [2021-03-25 00:18:16,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4687 conditions, 592 events. 207/592 cut-off events. For 5898/5944 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3988 event pairs, 14 based on Foata normal form. 34/624 useless extension candidates. Maximal degree in co-relation 4607. Up to 211 conditions per place. [2021-03-25 00:18:16,689 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 28 selfloop transitions, 125 changer transitions 4/166 dead transitions. [2021-03-25 00:18:16,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 166 transitions, 3083 flow [2021-03-25 00:18:16,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:18:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:18:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2021-03-25 00:18:16,690 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.64 [2021-03-25 00:18:16,690 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 224 transitions. [2021-03-25 00:18:16,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 224 transitions. [2021-03-25 00:18:16,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:16,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 224 transitions. [2021-03-25 00:18:16,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,692 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,692 INFO L185 Difference]: Start difference. First operand has 95 places, 146 transitions, 2530 flow. Second operand 7 states and 224 transitions. [2021-03-25 00:18:16,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 166 transitions, 3083 flow [2021-03-25 00:18:16,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 166 transitions, 2976 flow, removed 41 selfloop flow, removed 2 redundant places. [2021-03-25 00:18:16,718 INFO L241 Difference]: Finished difference. Result has 100 places, 150 transitions, 2746 flow [2021-03-25 00:18:16,718 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2746, PETRI_PLACES=100, PETRI_TRANSITIONS=150} [2021-03-25 00:18:16,718 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 67 predicate places. [2021-03-25 00:18:16,718 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 150 transitions, 2746 flow [2021-03-25 00:18:16,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,718 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:16,718 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] [2021-03-25 00:18:16,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 00:18:16,719 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:16,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:16,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1677409631, now seen corresponding path program 19 times [2021-03-25 00:18:16,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:16,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972041975] [2021-03-25 00:18:16,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:16,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:16,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:18:16,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:16,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972041975] [2021-03-25 00:18:16,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:16,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:18:16,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217949895] [2021-03-25 00:18:16,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:18:16,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:16,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:18:16,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:18:16,753 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:16,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 150 transitions, 2746 flow. Second operand has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:16,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:16,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:16,932 INFO L129 PetriNetUnfolder]: 203/582 cut-off events. [2021-03-25 00:18:16,932 INFO L130 PetriNetUnfolder]: For 6343/6369 co-relation queries the response was YES. [2021-03-25 00:18:16,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4722 conditions, 582 events. 203/582 cut-off events. For 6343/6369 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3880 event pairs, 16 based on Foata normal form. 8/589 useless extension candidates. Maximal degree in co-relation 4643. Up to 191 conditions per place. [2021-03-25 00:18:16,937 INFO L132 encePairwiseOnDemand]: 40/50 looper letters, 28 selfloop transitions, 124 changer transitions 11/172 dead transitions. [2021-03-25 00:18:16,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 172 transitions, 3345 flow [2021-03-25 00:18:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:18:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:18:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 286 transitions. [2021-03-25 00:18:16,938 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6355555555555555 [2021-03-25 00:18:16,938 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 286 transitions. [2021-03-25 00:18:16,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 286 transitions. [2021-03-25 00:18:16,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:16,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 286 transitions. [2021-03-25 00:18:16,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.77777777777778) internal successors, (286), 9 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,940 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,940 INFO L185 Difference]: Start difference. First operand has 100 places, 150 transitions, 2746 flow. Second operand 9 states and 286 transitions. [2021-03-25 00:18:16,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 172 transitions, 3345 flow [2021-03-25 00:18:16,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 172 transitions, 3154 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 00:18:16,962 INFO L241 Difference]: Finished difference. Result has 105 places, 149 transitions, 2820 flow [2021-03-25 00:18:16,963 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2566, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2820, PETRI_PLACES=105, PETRI_TRANSITIONS=149} [2021-03-25 00:18:16,963 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 72 predicate places. [2021-03-25 00:18:16,963 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 149 transitions, 2820 flow [2021-03-25 00:18:16,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,963 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:16,963 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:16,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 00:18:16,963 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:16,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1970073907, now seen corresponding path program 20 times [2021-03-25 00:18:16,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:16,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946614563] [2021-03-25 00:18:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:16,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:16,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:18:16,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:16,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:16,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:16,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946614563] [2021-03-25 00:18:16,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:16,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:16,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957025697] [2021-03-25 00:18:16,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:16,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:16,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:16,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:16,997 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:16,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 149 transitions, 2820 flow. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:16,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:16,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:16,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:17,141 INFO L129 PetriNetUnfolder]: 170/527 cut-off events. [2021-03-25 00:18:17,142 INFO L130 PetriNetUnfolder]: For 6744/6768 co-relation queries the response was YES. [2021-03-25 00:18:17,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4529 conditions, 527 events. 170/527 cut-off events. For 6744/6768 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3547 event pairs, 12 based on Foata normal form. 23/549 useless extension candidates. Maximal degree in co-relation 4453. Up to 182 conditions per place. [2021-03-25 00:18:17,146 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 25 selfloop transitions, 119 changer transitions 10/163 dead transitions. [2021-03-25 00:18:17,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 163 transitions, 3314 flow [2021-03-25 00:18:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:18:17,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:18:17,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2021-03-25 00:18:17,147 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.64 [2021-03-25 00:18:17,148 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 224 transitions. [2021-03-25 00:18:17,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 224 transitions. [2021-03-25 00:18:17,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:17,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 224 transitions. [2021-03-25 00:18:17,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,149 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,149 INFO L185 Difference]: Start difference. First operand has 105 places, 149 transitions, 2820 flow. Second operand 7 states and 224 transitions. [2021-03-25 00:18:17,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 163 transitions, 3314 flow [2021-03-25 00:18:17,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 163 transitions, 3013 flow, removed 9 selfloop flow, removed 8 redundant places. [2021-03-25 00:18:17,176 INFO L241 Difference]: Finished difference. Result has 104 places, 144 transitions, 2724 flow [2021-03-25 00:18:17,176 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2724, PETRI_PLACES=104, PETRI_TRANSITIONS=144} [2021-03-25 00:18:17,176 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 71 predicate places. [2021-03-25 00:18:17,176 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 144 transitions, 2724 flow [2021-03-25 00:18:17,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,176 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:17,176 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] [2021-03-25 00:18:17,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-25 00:18:17,177 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:17,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:17,177 INFO L82 PathProgramCache]: Analyzing trace with hash -263768261, now seen corresponding path program 21 times [2021-03-25 00:18:17,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:17,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819943967] [2021-03-25 00:18:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:17,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:17,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:17,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819943967] [2021-03-25 00:18:17,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:17,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:17,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993686982] [2021-03-25 00:18:17,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:17,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:17,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:17,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:17,208 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:17,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 144 transitions, 2724 flow. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:17,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:17,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:17,381 INFO L129 PetriNetUnfolder]: 149/493 cut-off events. [2021-03-25 00:18:17,381 INFO L130 PetriNetUnfolder]: For 6235/6257 co-relation queries the response was YES. [2021-03-25 00:18:17,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4108 conditions, 493 events. 149/493 cut-off events. For 6235/6257 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3373 event pairs, 35 based on Foata normal form. 7/499 useless extension candidates. Maximal degree in co-relation 4029. Up to 218 conditions per place. [2021-03-25 00:18:17,386 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 52 selfloop transitions, 89 changer transitions 5/155 dead transitions. [2021-03-25 00:18:17,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 155 transitions, 3127 flow [2021-03-25 00:18:17,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:18:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:18:17,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2021-03-25 00:18:17,387 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.635 [2021-03-25 00:18:17,387 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 254 transitions. [2021-03-25 00:18:17,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 254 transitions. [2021-03-25 00:18:17,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:17,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 254 transitions. [2021-03-25 00:18:17,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.75) internal successors, (254), 8 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,389 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,389 INFO L185 Difference]: Start difference. First operand has 104 places, 144 transitions, 2724 flow. Second operand 8 states and 254 transitions. [2021-03-25 00:18:17,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 155 transitions, 3127 flow [2021-03-25 00:18:17,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 155 transitions, 2960 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 00:18:17,413 INFO L241 Difference]: Finished difference. Result has 107 places, 141 transitions, 2680 flow [2021-03-25 00:18:17,413 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2680, PETRI_PLACES=107, PETRI_TRANSITIONS=141} [2021-03-25 00:18:17,413 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 74 predicate places. [2021-03-25 00:18:17,413 INFO L480 AbstractCegarLoop]: Abstraction has has 107 places, 141 transitions, 2680 flow [2021-03-25 00:18:17,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,414 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:17,414 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] [2021-03-25 00:18:17,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-25 00:18:17,414 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:17,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:17,414 INFO L82 PathProgramCache]: Analyzing trace with hash 483720895, now seen corresponding path program 22 times [2021-03-25 00:18:17,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:17,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189543304] [2021-03-25 00:18:17,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:17,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:17,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:17,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189543304] [2021-03-25 00:18:17,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:17,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:18:17,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035972790] [2021-03-25 00:18:17,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:18:17,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:17,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:18:17,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:18:17,463 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:17,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 141 transitions, 2680 flow. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:17,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:17,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:17,709 INFO L129 PetriNetUnfolder]: 141/475 cut-off events. [2021-03-25 00:18:17,710 INFO L130 PetriNetUnfolder]: For 6037/6061 co-relation queries the response was YES. [2021-03-25 00:18:17,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3967 conditions, 475 events. 141/475 cut-off events. For 6037/6061 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3240 event pairs, 35 based on Foata normal form. 10/484 useless extension candidates. Maximal degree in co-relation 3890. Up to 214 conditions per place. [2021-03-25 00:18:17,718 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 54 selfloop transitions, 74 changer transitions 19/156 dead transitions. [2021-03-25 00:18:17,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 156 transitions, 3113 flow [2021-03-25 00:18:17,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 00:18:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 00:18:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 366 transitions. [2021-03-25 00:18:17,720 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.61 [2021-03-25 00:18:17,720 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 366 transitions. [2021-03-25 00:18:17,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 366 transitions. [2021-03-25 00:18:17,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:17,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 366 transitions. [2021-03-25 00:18:17,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 30.5) internal successors, (366), 12 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 50.0) internal successors, (650), 13 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,722 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 50.0) internal successors, (650), 13 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,722 INFO L185 Difference]: Start difference. First operand has 107 places, 141 transitions, 2680 flow. Second operand 12 states and 366 transitions. [2021-03-25 00:18:17,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 156 transitions, 3113 flow [2021-03-25 00:18:17,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 156 transitions, 3037 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-25 00:18:17,749 INFO L241 Difference]: Finished difference. Result has 115 places, 126 transitions, 2372 flow [2021-03-25 00:18:17,749 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2552, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2372, PETRI_PLACES=115, PETRI_TRANSITIONS=126} [2021-03-25 00:18:17,750 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 82 predicate places. [2021-03-25 00:18:17,750 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 126 transitions, 2372 flow [2021-03-25 00:18:17,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,750 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:17,750 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] [2021-03-25 00:18:17,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-25 00:18:17,750 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:17,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:17,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1387782529, now seen corresponding path program 23 times [2021-03-25 00:18:17,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:17,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544849453] [2021-03-25 00:18:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:17,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:17,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:18:17,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:17,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544849453] [2021-03-25 00:18:17,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:17,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:18:17,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018709400] [2021-03-25 00:18:17,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:18:17,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:17,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:18:17,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:18:17,786 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:17,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 126 transitions, 2372 flow. Second operand has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:17,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:17,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:17,943 INFO L129 PetriNetUnfolder]: 133/446 cut-off events. [2021-03-25 00:18:17,944 INFO L130 PetriNetUnfolder]: For 5577/5601 co-relation queries the response was YES. [2021-03-25 00:18:17,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3716 conditions, 446 events. 133/446 cut-off events. For 5577/5601 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2966 event pairs, 11 based on Foata normal form. 7/452 useless extension candidates. Maximal degree in co-relation 3642. Up to 150 conditions per place. [2021-03-25 00:18:17,948 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 28 selfloop transitions, 101 changer transitions 5/143 dead transitions. [2021-03-25 00:18:17,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 143 transitions, 2836 flow [2021-03-25 00:18:17,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:18:17,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:18:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 281 transitions. [2021-03-25 00:18:17,949 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6244444444444445 [2021-03-25 00:18:17,949 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 281 transitions. [2021-03-25 00:18:17,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 281 transitions. [2021-03-25 00:18:17,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:17,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 281 transitions. [2021-03-25 00:18:17,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.22222222222222) internal successors, (281), 9 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,951 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,951 INFO L185 Difference]: Start difference. First operand has 115 places, 126 transitions, 2372 flow. Second operand 9 states and 281 transitions. [2021-03-25 00:18:17,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 143 transitions, 2836 flow [2021-03-25 00:18:17,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 143 transitions, 2744 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-03-25 00:18:17,973 INFO L241 Difference]: Finished difference. Result has 115 places, 126 transitions, 2491 flow [2021-03-25 00:18:17,973 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2491, PETRI_PLACES=115, PETRI_TRANSITIONS=126} [2021-03-25 00:18:17,973 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 82 predicate places. [2021-03-25 00:18:17,974 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 126 transitions, 2491 flow [2021-03-25 00:18:17,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:17,974 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:17,974 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] [2021-03-25 00:18:17,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-25 00:18:17,974 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:17,974 INFO L82 PathProgramCache]: Analyzing trace with hash 376961783, now seen corresponding path program 24 times [2021-03-25 00:18:17,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:17,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102709319] [2021-03-25 00:18:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:17,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:17,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:18:17,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:17,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:17,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:18,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102709319] [2021-03-25 00:18:18,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:18,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:18:18,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252971945] [2021-03-25 00:18:18,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:18:18,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:18,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:18:18,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:18:18,008 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:18,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 126 transitions, 2491 flow. Second operand has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:18,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:18,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:18,176 INFO L129 PetriNetUnfolder]: 132/452 cut-off events. [2021-03-25 00:18:18,176 INFO L130 PetriNetUnfolder]: For 5947/5973 co-relation queries the response was YES. [2021-03-25 00:18:18,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3823 conditions, 452 events. 132/452 cut-off events. For 5947/5973 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3032 event pairs, 13 based on Foata normal form. 7/458 useless extension candidates. Maximal degree in co-relation 3748. Up to 151 conditions per place. [2021-03-25 00:18:18,180 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 28 selfloop transitions, 98 changer transitions 8/143 dead transitions. [2021-03-25 00:18:18,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 143 transitions, 2958 flow [2021-03-25 00:18:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:18:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:18:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 281 transitions. [2021-03-25 00:18:18,182 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6244444444444445 [2021-03-25 00:18:18,182 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 281 transitions. [2021-03-25 00:18:18,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 281 transitions. [2021-03-25 00:18:18,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:18,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 281 transitions. [2021-03-25 00:18:18,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.22222222222222) internal successors, (281), 9 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,183 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,183 INFO L185 Difference]: Start difference. First operand has 115 places, 126 transitions, 2491 flow. Second operand 9 states and 281 transitions. [2021-03-25 00:18:18,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 143 transitions, 2958 flow [2021-03-25 00:18:18,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 143 transitions, 2837 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-25 00:18:18,206 INFO L241 Difference]: Finished difference. Result has 118 places, 123 transitions, 2522 flow [2021-03-25 00:18:18,206 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2522, PETRI_PLACES=118, PETRI_TRANSITIONS=123} [2021-03-25 00:18:18,207 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 85 predicate places. [2021-03-25 00:18:18,207 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 123 transitions, 2522 flow [2021-03-25 00:18:18,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,207 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:18,207 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] [2021-03-25 00:18:18,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-25 00:18:18,207 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:18,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:18,208 INFO L82 PathProgramCache]: Analyzing trace with hash -677008509, now seen corresponding path program 25 times [2021-03-25 00:18:18,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:18,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683860563] [2021-03-25 00:18:18,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:18,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:18,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:18,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683860563] [2021-03-25 00:18:18,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:18,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:18,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189346158] [2021-03-25 00:18:18,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:18,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:18,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:18,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:18,257 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:18,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 123 transitions, 2522 flow. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:18,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:18,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:18,372 INFO L129 PetriNetUnfolder]: 65/249 cut-off events. [2021-03-25 00:18:18,372 INFO L130 PetriNetUnfolder]: For 3493/3497 co-relation queries the response was YES. [2021-03-25 00:18:18,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 249 events. 65/249 cut-off events. For 3493/3497 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1401 event pairs, 27 based on Foata normal form. 30/279 useless extension candidates. Maximal degree in co-relation 2187. Up to 146 conditions per place. [2021-03-25 00:18:18,374 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 44 selfloop transitions, 24 changer transitions 25/102 dead transitions. [2021-03-25 00:18:18,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 102 transitions, 2216 flow [2021-03-25 00:18:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:18:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:18:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 243 transitions. [2021-03-25 00:18:18,375 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6075 [2021-03-25 00:18:18,375 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 243 transitions. [2021-03-25 00:18:18,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 243 transitions. [2021-03-25 00:18:18,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:18,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 243 transitions. [2021-03-25 00:18:18,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.375) internal successors, (243), 8 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,377 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,377 INFO L185 Difference]: Start difference. First operand has 118 places, 123 transitions, 2522 flow. Second operand 8 states and 243 transitions. [2021-03-25 00:18:18,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 102 transitions, 2216 flow [2021-03-25 00:18:18,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 102 transitions, 2003 flow, removed 3 selfloop flow, removed 12 redundant places. [2021-03-25 00:18:18,394 INFO L241 Difference]: Finished difference. Result has 113 places, 75 transitions, 1217 flow [2021-03-25 00:18:18,394 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1217, PETRI_PLACES=113, PETRI_TRANSITIONS=75} [2021-03-25 00:18:18,394 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 80 predicate places. [2021-03-25 00:18:18,395 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 75 transitions, 1217 flow [2021-03-25 00:18:18,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,395 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:18,395 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] [2021-03-25 00:18:18,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-25 00:18:18,395 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:18,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:18,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1212344827, now seen corresponding path program 26 times [2021-03-25 00:18:18,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:18,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955234849] [2021-03-25 00:18:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:18,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:18,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:18:18,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:18:18,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:18,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:18,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955234849] [2021-03-25 00:18:18,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:18,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:18:18,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220526522] [2021-03-25 00:18:18,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:18,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:18,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:18,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:18,422 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:18,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 75 transitions, 1217 flow. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:18,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:18,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:18,491 INFO L129 PetriNetUnfolder]: 29/133 cut-off events. [2021-03-25 00:18:18,491 INFO L130 PetriNetUnfolder]: For 1622/1624 co-relation queries the response was YES. [2021-03-25 00:18:18,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 133 events. 29/133 cut-off events. For 1622/1624 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 585 event pairs, 10 based on Foata normal form. 20/153 useless extension candidates. Maximal degree in co-relation 1012. Up to 48 conditions per place. [2021-03-25 00:18:18,492 INFO L132 encePairwiseOnDemand]: 40/50 looper letters, 21 selfloop transitions, 33 changer transitions 9/72 dead transitions. [2021-03-25 00:18:18,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 72 transitions, 1289 flow [2021-03-25 00:18:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:18:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:18:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2021-03-25 00:18:18,493 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2021-03-25 00:18:18,493 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 184 transitions. [2021-03-25 00:18:18,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 184 transitions. [2021-03-25 00:18:18,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:18,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 184 transitions. [2021-03-25 00:18:18,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,494 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,494 INFO L185 Difference]: Start difference. First operand has 113 places, 75 transitions, 1217 flow. Second operand 6 states and 184 transitions. [2021-03-25 00:18:18,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 72 transitions, 1289 flow [2021-03-25 00:18:18,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 942 flow, removed 11 selfloop flow, removed 34 redundant places. [2021-03-25 00:18:18,509 INFO L241 Difference]: Finished difference. Result has 77 places, 59 transitions, 816 flow [2021-03-25 00:18:18,509 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=816, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2021-03-25 00:18:18,510 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 44 predicate places. [2021-03-25 00:18:18,510 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 816 flow [2021-03-25 00:18:18,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,510 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:18,510 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:18,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-25 00:18:18,510 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:18,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:18,510 INFO L82 PathProgramCache]: Analyzing trace with hash 409147511, now seen corresponding path program 27 times [2021-03-25 00:18:18,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:18,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794761913] [2021-03-25 00:18:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:18,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:18,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:18:18,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:18,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794761913] [2021-03-25 00:18:18,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:18,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:18,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022737044] [2021-03-25 00:18:18,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:18,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:18,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:18,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:18,539 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:18,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 816 flow. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:18,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:18,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:18,593 INFO L129 PetriNetUnfolder]: 16/81 cut-off events. [2021-03-25 00:18:18,593 INFO L130 PetriNetUnfolder]: For 764/766 co-relation queries the response was YES. [2021-03-25 00:18:18,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 81 events. 16/81 cut-off events. For 764/766 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 261 event pairs, 4 based on Foata normal form. 6/87 useless extension candidates. Maximal degree in co-relation 417. Up to 33 conditions per place. [2021-03-25 00:18:18,594 INFO L132 encePairwiseOnDemand]: 40/50 looper letters, 7 selfloop transitions, 32 changer transitions 10/58 dead transitions. [2021-03-25 00:18:18,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 58 transitions, 885 flow [2021-03-25 00:18:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:18:18,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:18:18,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2021-03-25 00:18:18,595 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5828571428571429 [2021-03-25 00:18:18,595 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 204 transitions. [2021-03-25 00:18:18,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 204 transitions. [2021-03-25 00:18:18,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:18,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 204 transitions. [2021-03-25 00:18:18,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,597 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,597 INFO L185 Difference]: Start difference. First operand has 77 places, 59 transitions, 816 flow. Second operand 7 states and 204 transitions. [2021-03-25 00:18:18,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 58 transitions, 885 flow [2021-03-25 00:18:18,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 58 transitions, 770 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-03-25 00:18:18,602 INFO L241 Difference]: Finished difference. Result has 72 places, 46 transitions, 597 flow [2021-03-25 00:18:18,602 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=597, PETRI_PLACES=72, PETRI_TRANSITIONS=46} [2021-03-25 00:18:18,602 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 39 predicate places. [2021-03-25 00:18:18,602 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 46 transitions, 597 flow [2021-03-25 00:18:18,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,603 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:18,603 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] [2021-03-25 00:18:18,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-25 00:18:18,603 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:18,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:18,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1155950443, now seen corresponding path program 28 times [2021-03-25 00:18:18,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:18,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627700462] [2021-03-25 00:18:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:18,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:18,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:18:18,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:18,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627700462] [2021-03-25 00:18:18,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:18,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:18:18,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756494231] [2021-03-25 00:18:18,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:18:18,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:18,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:18:18,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:18:18,651 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:18,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 46 transitions, 597 flow. Second operand has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:18,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:18,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:18,724 INFO L129 PetriNetUnfolder]: 10/61 cut-off events. [2021-03-25 00:18:18,724 INFO L130 PetriNetUnfolder]: For 532/534 co-relation queries the response was YES. [2021-03-25 00:18:18,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 61 events. 10/61 cut-off events. For 532/534 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 2 based on Foata normal form. 4/65 useless extension candidates. Maximal degree in co-relation 317. Up to 18 conditions per place. [2021-03-25 00:18:18,725 INFO L132 encePairwiseOnDemand]: 40/50 looper letters, 7 selfloop transitions, 22 changer transitions 9/47 dead transitions. [2021-03-25 00:18:18,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 47 transitions, 679 flow [2021-03-25 00:18:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:18:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:18:18,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 257 transitions. [2021-03-25 00:18:18,726 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5711111111111111 [2021-03-25 00:18:18,726 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 257 transitions. [2021-03-25 00:18:18,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 257 transitions. [2021-03-25 00:18:18,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:18,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 257 transitions. [2021-03-25 00:18:18,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 28.555555555555557) internal successors, (257), 9 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,728 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,728 INFO L185 Difference]: Start difference. First operand has 72 places, 46 transitions, 597 flow. Second operand 9 states and 257 transitions. [2021-03-25 00:18:18,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 47 transitions, 679 flow [2021-03-25 00:18:18,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 47 transitions, 523 flow, removed 7 selfloop flow, removed 13 redundant places. [2021-03-25 00:18:18,731 INFO L241 Difference]: Finished difference. Result has 68 places, 36 transitions, 392 flow [2021-03-25 00:18:18,732 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=392, PETRI_PLACES=68, PETRI_TRANSITIONS=36} [2021-03-25 00:18:18,732 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 35 predicate places. [2021-03-25 00:18:18,732 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 36 transitions, 392 flow [2021-03-25 00:18:18,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,743 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:18,743 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] [2021-03-25 00:18:18,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-25 00:18:18,743 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:18,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:18,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1527606793, now seen corresponding path program 29 times [2021-03-25 00:18:18,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:18,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995919911] [2021-03-25 00:18:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:18,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:18,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:18,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995919911] [2021-03-25 00:18:18,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:18,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:18,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376302736] [2021-03-25 00:18:18,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:18,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:18,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:18,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:18,780 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:18,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 36 transitions, 392 flow. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:18,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:18,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:18,831 INFO L129 PetriNetUnfolder]: 7/46 cut-off events. [2021-03-25 00:18:18,831 INFO L130 PetriNetUnfolder]: For 289/291 co-relation queries the response was YES. [2021-03-25 00:18:18,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 46 events. 7/46 cut-off events. For 289/291 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 78 event pairs, 2 based on Foata normal form. 4/50 useless extension candidates. Maximal degree in co-relation 196. Up to 13 conditions per place. [2021-03-25 00:18:18,832 INFO L132 encePairwiseOnDemand]: 40/50 looper letters, 5 selfloop transitions, 20 changer transitions 4/38 dead transitions. [2021-03-25 00:18:18,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 38 transitions, 462 flow [2021-03-25 00:18:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:18:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:18:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2021-03-25 00:18:18,833 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5625 [2021-03-25 00:18:18,833 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 225 transitions. [2021-03-25 00:18:18,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 225 transitions. [2021-03-25 00:18:18,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:18,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 225 transitions. [2021-03-25 00:18:18,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,836 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,836 INFO L185 Difference]: Start difference. First operand has 68 places, 36 transitions, 392 flow. Second operand 8 states and 225 transitions. [2021-03-25 00:18:18,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 38 transitions, 462 flow [2021-03-25 00:18:18,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 38 transitions, 313 flow, removed 2 selfloop flow, removed 21 redundant places. [2021-03-25 00:18:18,838 INFO L241 Difference]: Finished difference. Result has 55 places, 32 transitions, 248 flow [2021-03-25 00:18:18,839 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=248, PETRI_PLACES=55, PETRI_TRANSITIONS=32} [2021-03-25 00:18:18,841 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2021-03-25 00:18:18,841 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 32 transitions, 248 flow [2021-03-25 00:18:18,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,841 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:18,841 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] [2021-03-25 00:18:18,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-25 00:18:18,842 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:18,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:18,842 INFO L82 PathProgramCache]: Analyzing trace with hash -313158011, now seen corresponding path program 30 times [2021-03-25 00:18:18,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:18,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832753700] [2021-03-25 00:18:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:18,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:18,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:18,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832753700] [2021-03-25 00:18:18,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:18,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:18:18,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830823513] [2021-03-25 00:18:18,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:18:18,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:18,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:18:18,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:18:18,889 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:18,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 32 transitions, 248 flow. Second operand has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:18,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:18,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:18,944 INFO L129 PetriNetUnfolder]: 3/35 cut-off events. [2021-03-25 00:18:18,944 INFO L130 PetriNetUnfolder]: For 101/103 co-relation queries the response was YES. [2021-03-25 00:18:18,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 35 events. 3/35 cut-off events. For 101/103 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 1 based on Foata normal form. 4/39 useless extension candidates. Maximal degree in co-relation 136. Up to 8 conditions per place. [2021-03-25 00:18:18,945 INFO L132 encePairwiseOnDemand]: 41/50 looper letters, 3 selfloop transitions, 13 changer transitions 6/31 dead transitions. [2021-03-25 00:18:18,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 31 transitions, 281 flow [2021-03-25 00:18:18,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:18:18,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:18:18,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2021-03-25 00:18:18,947 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.55 [2021-03-25 00:18:18,947 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 220 transitions. [2021-03-25 00:18:18,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 220 transitions. [2021-03-25 00:18:18,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:18,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 220 transitions. [2021-03-25 00:18:18,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,949 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,949 INFO L185 Difference]: Start difference. First operand has 55 places, 32 transitions, 248 flow. Second operand 8 states and 220 transitions. [2021-03-25 00:18:18,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 31 transitions, 281 flow [2021-03-25 00:18:18,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 31 transitions, 222 flow, removed 1 selfloop flow, removed 11 redundant places. [2021-03-25 00:18:18,950 INFO L241 Difference]: Finished difference. Result has 51 places, 25 transitions, 160 flow [2021-03-25 00:18:18,950 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=160, PETRI_PLACES=51, PETRI_TRANSITIONS=25} [2021-03-25 00:18:18,951 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2021-03-25 00:18:18,951 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 25 transitions, 160 flow [2021-03-25 00:18:18,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,951 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:18,951 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] [2021-03-25 00:18:18,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-25 00:18:18,951 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:18,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:18,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1438025135, now seen corresponding path program 31 times [2021-03-25 00:18:18,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:18,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458416824] [2021-03-25 00:18:18,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:18,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:18,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:18,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:18,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:18,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458416824] [2021-03-25 00:18:18,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:18,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:18:18,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505730816] [2021-03-25 00:18:18,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 00:18:18,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:18,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 00:18:18,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-25 00:18:18,996 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2021-03-25 00:18:18,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 25 transitions, 160 flow. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:18,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:18,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2021-03-25 00:18:18,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:19,046 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2021-03-25 00:18:19,046 INFO L130 PetriNetUnfolder]: For 63/65 co-relation queries the response was YES. [2021-03-25 00:18:19,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 18 events. 1/18 cut-off events. For 63/65 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 4/22 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2021-03-25 00:18:19,046 INFO L132 encePairwiseOnDemand]: 42/50 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2021-03-25 00:18:19,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 17 transitions, 158 flow [2021-03-25 00:18:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:18:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:18:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2021-03-25 00:18:19,047 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5288888888888889 [2021-03-25 00:18:19,047 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 238 transitions. [2021-03-25 00:18:19,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 238 transitions. [2021-03-25 00:18:19,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:19,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 238 transitions. [2021-03-25 00:18:19,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:19,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:19,049 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:19,049 INFO L185 Difference]: Start difference. First operand has 51 places, 25 transitions, 160 flow. Second operand 9 states and 238 transitions. [2021-03-25 00:18:19,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 17 transitions, 158 flow [2021-03-25 00:18:19,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 17 transitions, 92 flow, removed 1 selfloop flow, removed 19 redundant places. [2021-03-25 00:18:19,049 INFO L241 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2021-03-25 00:18:19,049 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2021-03-25 00:18:19,049 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2021-03-25 00:18:19,050 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2021-03-25 00:18:19,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:19,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-25 00:18:19,053 INFO L202 PluginConnector]: Adding new model ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 12:18:19 BasicIcfg [2021-03-25 00:18:19,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 00:18:19,054 INFO L168 Benchmark]: Toolchain (without parser) took 8529.04 ms. Allocated memory was 255.9 MB in the beginning and 515.9 MB in the end (delta: 260.0 MB). Free memory was 236.4 MB in the beginning and 367.6 MB in the end (delta: -131.2 MB). Peak memory consumption was 130.5 MB. Max. memory is 16.0 GB. [2021-03-25 00:18:19,054 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:18:19,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.86 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 234.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 00:18:19,059 INFO L168 Benchmark]: Boogie Preprocessor took 11.79 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 234.0 MB in the end (delta: 840.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:18:19,059 INFO L168 Benchmark]: RCFGBuilder took 232.10 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 234.2 MB in the end (delta: -433.3 kB). Peak memory consumption was 16.1 MB. Max. memory is 16.0 GB. [2021-03-25 00:18:19,059 INFO L168 Benchmark]: TraceAbstraction took 8258.36 ms. Allocated memory was 255.9 MB in the beginning and 515.9 MB in the end (delta: 260.0 MB). Free memory was 233.6 MB in the beginning and 367.6 MB in the end (delta: -134.0 MB). Peak memory consumption was 127.0 MB. Max. memory is 16.0 GB. [2021-03-25 00:18:19,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.86 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 234.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.79 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 234.0 MB in the end (delta: 840.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 232.10 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 234.2 MB in the end (delta: -433.3 kB). Peak memory consumption was 16.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8258.36 ms. Allocated memory was 255.9 MB in the beginning and 515.9 MB in the end (delta: 260.0 MB). Free memory was 233.6 MB in the beginning and 367.6 MB in the end (delta: -134.0 MB). Peak memory consumption was 127.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 892.8ms, 45 PlacesBefore, 33 PlacesAfterwards, 32 TransitionsBefore, 20 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 618 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 274, positive: 244, positive conditional: 0, positive unconditional: 244, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 237, positive: 212, positive conditional: 0, positive unconditional: 212, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 237, positive: 212, positive conditional: 0, positive unconditional: 212, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 237, positive: 180, positive conditional: 0, positive unconditional: 180, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 57, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 279, positive: 140, positive conditional: 0, positive unconditional: 140, negative: 139, negative conditional: 0, negative unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 274, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 237, unknown conditional: 0, unknown unconditional: 237] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - PositiveResult [Line: 80]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 8179.5ms, OverallIterations: 31, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 5657.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 957.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 50 SDtfs, 204 SDslu, 10 SDs, 0 SdLazy, 3820 SolverSat, 670 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1658.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 291 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 914.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2974occurred in iteration=12, InterpolantAutomatonStates: 238, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.7ms SsaConstructionTime, 193.5ms SatisfiabilityAnalysisTime, 1095.1ms InterpolantComputationTime, 620 NumberOfCodeBlocks, 620 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 589 ConstructedInterpolants, 0 QuantifiedInterpolants, 1821 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...