/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-VariableLbe.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 [2021-03-24 15:24:32,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 15:24:32,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 15:24:32,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 15:24:32,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 15:24:32,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 15:24:32,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 15:24:32,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 15:24:32,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 15:24:32,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 15:24:32,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 15:24:32,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 15:24:32,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 15:24:32,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 15:24:32,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 15:24:32,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 15:24:32,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 15:24:32,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 15:24:32,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 15:24:32,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 15:24:32,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 15:24:32,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 15:24:32,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 15:24:32,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 15:24:32,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 15:24:32,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 15:24:32,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 15:24:32,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 15:24:32,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 15:24:32,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 15:24:32,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 15:24:32,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 15:24:32,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 15:24:32,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 15:24:32,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 15:24:32,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 15:24:32,679 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-VariableLbe.epf [2021-03-24 15:24:32,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 15:24:32,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 15:24:32,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 15:24:32,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 15:24:32,725 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 15:24:32,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 15:24:32,726 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 15:24:32,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 15:24:32,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 15:24:32,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 15:24:32,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 15:24:32,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 15:24:32,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 15:24:32,727 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 15:24:32,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 15:24:32,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 15:24:32,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 15:24:32,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 15:24:32,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 15:24:32,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 15:24:32,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 15:24:32,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 15:24:32,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 15:24:32,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 15:24:32,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 15:24:32,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 15:24:32,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 15:24:32,729 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 15:24:32,729 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 15:24:32,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 15:24:33,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 15:24:33,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 15:24:33,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 15:24:33,055 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 15:24:33,056 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 15:24:33,057 INFO L432 ainManager$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 [2021-03-24 15:24:33,057 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-4.wvr.bpl' [2021-03-24 15:24:33,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 15:24:33,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 15:24:33,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 15:24:33,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 15:24:33,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 15:24:33,119 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 24.03 03:24:33" (1/1) ... [2021-03-24 15:24:33,127 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 24.03 03:24:33" (1/1) ... [2021-03-24 15:24:33,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 15:24:33,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 15:24:33,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 15:24:33,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 15:24:33,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:33" (1/1) ... [2021-03-24 15:24:33,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:33" (1/1) ... [2021-03-24 15:24:33,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:33" (1/1) ... [2021-03-24 15:24:33,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:33" (1/1) ... [2021-03-24 15:24:33,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:33" (1/1) ... [2021-03-24 15:24:33,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:33" (1/1) ... [2021-03-24 15:24:33,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:33" (1/1) ... [2021-03-24 15:24:33,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 15:24:33,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 15:24:33,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 15:24:33,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 15:24:33,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:33" (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 [2021-03-24 15:24:33,229 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-24 15:24:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-24 15:24:33,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-24 15:24:33,231 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-24 15:24:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-24 15:24:33,232 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-24 15:24:33,232 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 15:24:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 15:24:33,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 15:24:33,233 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-24 15:24:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-24 15:24:33,233 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-24 15:24:33,234 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-24 15:24:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-24 15:24:33,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-24 15:24:33,235 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 15:24:33,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 15:24:33,423 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 15:24:33,425 INFO L202 PluginConnector]: Adding new model ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 03:24:33 BoogieIcfgContainer [2021-03-24 15:24:33,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 15:24:33,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 15:24:33,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 15:24:33,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 15:24:33,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:24:33" (1/2) ... [2021-03-24 15:24:33,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466c9fde and model type ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 03:24:33, skipping insertion in model container [2021-03-24 15:24:33,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 03:24:33" (2/2) ... [2021-03-24 15:24:33,434 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-4.wvr.bpl [2021-03-24 15:24:33,439 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 15:24:33,445 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 15:24:33,445 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 15:24:33,492 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-24 15:24:33,523 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 15:24:33,544 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 15:24:33,544 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 15:24:33,544 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 15:24:33,544 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 15:24:33,545 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 15:24:33,545 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 15:24:33,545 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 15:24:33,545 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 15:24:33,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 38 transitions, 108 flow [2021-03-24 15:24:33,600 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-03-24 15:24:33,600 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 15:24:33,602 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. [2021-03-24 15:24:33,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 38 transitions, 108 flow [2021-03-24 15:24:33,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 32 transitions, 88 flow [2021-03-24 15:24:33,620 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 15:24:33,627 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 32 transitions, 88 flow [2021-03-24 15:24:33,629 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 32 transitions, 88 flow [2021-03-24 15:24:33,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 32 transitions, 88 flow [2021-03-24 15:24:33,648 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-24 15:24:33,648 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 15:24:33,648 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. [2021-03-24 15:24:33,650 INFO L142 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-24 15:24:33,712 INFO L154 LiptonReduction]: Checked pairs total: 932 [2021-03-24 15:24:33,713 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-24 15:24:33,714 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 95 [2021-03-24 15:24:33,728 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-03-24 15:24:33,728 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 15:24:33,729 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:33,729 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:33,730 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:33,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:33,735 INFO L82 PathProgramCache]: Analyzing trace with hash 2128410956, now seen corresponding path program 1 times [2021-03-24 15:24:33,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:33,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352342477] [2021-03-24 15:24:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:33,895 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-03-24 15:24:33,896 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-03-24 15:24:33,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:33,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:33,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:33,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:33,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:33,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 15:24:33,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:33,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:33,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:33,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 15:24:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:33,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352342477] [2021-03-24 15:24:33,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:33,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 15:24:33,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883059656] [2021-03-24 15:24:33,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 15:24:33,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:33,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 15:24:33,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-24 15:24:33,953 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 43 [2021-03-24 15:24:33,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 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) [2021-03-24 15:24:33,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:33,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 43 [2021-03-24 15:24:33,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:34,105 INFO L129 PetriNetUnfolder]: 231/570 cut-off events. [2021-03-24 15:24:34,105 INFO L130 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2021-03-24 15:24:34,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 570 events. 231/570 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3564 event pairs, 100 based on Foata normal form. 1/564 useless extension candidates. Maximal degree in co-relation 1006. Up to 216 conditions per place. [2021-03-24 15:24:34,116 INFO L132 encePairwiseOnDemand]: 32/43 looper letters, 18 selfloop transitions, 9 changer transitions 1/44 dead transitions. [2021-03-24 15:24:34,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 168 flow [2021-03-24 15:24:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 15:24:34,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 15:24:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2021-03-24 15:24:34,127 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8325581395348837 [2021-03-24 15:24:34,127 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 179 transitions. [2021-03-24 15:24:34,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 179 transitions. [2021-03-24 15:24:34,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:34,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 179 transitions. [2021-03-24 15:24:34,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:34,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 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) [2021-03-24 15:24:34,136 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 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) [2021-03-24 15:24:34,138 INFO L185 Difference]: Start difference. First operand has 40 places, 27 transitions, 78 flow. Second operand 5 states and 179 transitions. [2021-03-24 15:24:34,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 168 flow [2021-03-24 15:24:34,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 152 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-24 15:24:34,144 INFO L241 Difference]: Finished difference. Result has 39 places, 34 transitions, 126 flow [2021-03-24 15:24:34,145 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2021-03-24 15:24:34,146 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2021-03-24 15:24:34,146 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 126 flow [2021-03-24 15:24:34,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 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) [2021-03-24 15:24:34,147 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:34,147 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:34,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 15:24:34,147 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:34,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1567724390, now seen corresponding path program 2 times [2021-03-24 15:24:34,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:34,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965954620] [2021-03-24 15:24:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:34,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:34,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:34,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:34,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:34,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:34,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:34,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:34,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:34,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:34,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:34,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:34,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:34,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:34,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965954620] [2021-03-24 15:24:34,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:34,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:24:34,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510425614] [2021-03-24 15:24:34,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:24:34,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:34,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:24:34,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:24:34,213 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:34,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 126 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:34,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:34,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:34,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:34,548 INFO L129 PetriNetUnfolder]: 1284/2404 cut-off events. [2021-03-24 15:24:34,548 INFO L130 PetriNetUnfolder]: For 364/399 co-relation queries the response was YES. [2021-03-24 15:24:34,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 2404 events. 1284/2404 cut-off events. For 364/399 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 16863 event pairs, 311 based on Foata normal form. 15/2266 useless extension candidates. Maximal degree in co-relation 5285. Up to 646 conditions per place. [2021-03-24 15:24:34,569 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 30 selfloop transitions, 29 changer transitions 0/76 dead transitions. [2021-03-24 15:24:34,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 76 transitions, 352 flow [2021-03-24 15:24:34,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:24:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:24:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2021-03-24 15:24:34,572 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7807308970099668 [2021-03-24 15:24:34,572 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2021-03-24 15:24:34,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2021-03-24 15:24:34,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:34,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2021-03-24 15:24:34,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:34,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:34,575 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:34,575 INFO L185 Difference]: Start difference. First operand has 39 places, 34 transitions, 126 flow. Second operand 7 states and 235 transitions. [2021-03-24 15:24:34,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 76 transitions, 352 flow [2021-03-24 15:24:34,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 76 transitions, 336 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-24 15:24:34,578 INFO L241 Difference]: Finished difference. Result has 45 places, 58 transitions, 297 flow [2021-03-24 15:24:34,579 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=45, PETRI_TRANSITIONS=58} [2021-03-24 15:24:34,579 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2021-03-24 15:24:34,579 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 58 transitions, 297 flow [2021-03-24 15:24:34,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:34,580 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:34,580 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:34,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 15:24:34,580 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:34,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:34,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1141953138, now seen corresponding path program 3 times [2021-03-24 15:24:34,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:34,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375254868] [2021-03-24 15:24:34,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:34,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:34,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:34,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:34,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:34,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:34,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:34,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:34,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:34,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375254868] [2021-03-24 15:24:34,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:34,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 15:24:34,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317617989] [2021-03-24 15:24:34,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 15:24:34,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:34,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 15:24:34,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 15:24:34,619 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:34,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 58 transitions, 297 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:34,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:34,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:34,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:34,897 INFO L129 PetriNetUnfolder]: 1268/2468 cut-off events. [2021-03-24 15:24:34,897 INFO L130 PetriNetUnfolder]: For 2489/2738 co-relation queries the response was YES. [2021-03-24 15:24:34,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7240 conditions, 2468 events. 1268/2468 cut-off events. For 2489/2738 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 17326 event pairs, 292 based on Foata normal form. 83/2432 useless extension candidates. Maximal degree in co-relation 7094. Up to 1452 conditions per place. [2021-03-24 15:24:34,922 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 54 selfloop transitions, 29 changer transitions 0/100 dead transitions. [2021-03-24 15:24:34,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 100 transitions, 707 flow [2021-03-24 15:24:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 15:24:34,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 15:24:34,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2021-03-24 15:24:34,926 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7627906976744186 [2021-03-24 15:24:34,927 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 164 transitions. [2021-03-24 15:24:34,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 164 transitions. [2021-03-24 15:24:34,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:34,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 164 transitions. [2021-03-24 15:24:34,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:34,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 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) [2021-03-24 15:24:34,931 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 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) [2021-03-24 15:24:34,931 INFO L185 Difference]: Start difference. First operand has 45 places, 58 transitions, 297 flow. Second operand 5 states and 164 transitions. [2021-03-24 15:24:34,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 100 transitions, 707 flow [2021-03-24 15:24:34,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 100 transitions, 664 flow, removed 19 selfloop flow, removed 1 redundant places. [2021-03-24 15:24:34,943 INFO L241 Difference]: Finished difference. Result has 50 places, 79 transitions, 512 flow [2021-03-24 15:24:34,943 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=512, PETRI_PLACES=50, PETRI_TRANSITIONS=79} [2021-03-24 15:24:34,944 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2021-03-24 15:24:34,944 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 79 transitions, 512 flow [2021-03-24 15:24:34,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:34,944 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:34,944 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:34,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 15:24:34,945 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:34,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1650012812, now seen corresponding path program 4 times [2021-03-24 15:24:34,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:34,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692507611] [2021-03-24 15:24:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:35,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:35,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:35,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:35,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:35,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:35,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692507611] [2021-03-24 15:24:35,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:35,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:24:35,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982725052] [2021-03-24 15:24:35,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 15:24:35,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:35,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 15:24:35,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 15:24:35,039 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:35,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 79 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:35,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:35,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:35,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:35,376 INFO L129 PetriNetUnfolder]: 1630/3228 cut-off events. [2021-03-24 15:24:35,377 INFO L130 PetriNetUnfolder]: For 5512/5842 co-relation queries the response was YES. [2021-03-24 15:24:35,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10538 conditions, 3228 events. 1630/3228 cut-off events. For 5512/5842 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 24625 event pairs, 339 based on Foata normal form. 163/3213 useless extension candidates. Maximal degree in co-relation 10401. Up to 850 conditions per place. [2021-03-24 15:24:35,412 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 45 selfloop transitions, 61 changer transitions 0/123 dead transitions. [2021-03-24 15:24:35,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 123 transitions, 999 flow [2021-03-24 15:24:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 15:24:35,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 15:24:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2021-03-24 15:24:35,414 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7790697674418605 [2021-03-24 15:24:35,414 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 201 transitions. [2021-03-24 15:24:35,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 201 transitions. [2021-03-24 15:24:35,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:35,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 201 transitions. [2021-03-24 15:24:35,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:35,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:35,426 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:35,426 INFO L185 Difference]: Start difference. First operand has 50 places, 79 transitions, 512 flow. Second operand 6 states and 201 transitions. [2021-03-24 15:24:35,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 123 transitions, 999 flow [2021-03-24 15:24:35,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 123 transitions, 994 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 15:24:35,436 INFO L241 Difference]: Finished difference. Result has 56 places, 107 transitions, 933 flow [2021-03-24 15:24:35,437 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=933, PETRI_PLACES=56, PETRI_TRANSITIONS=107} [2021-03-24 15:24:35,437 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2021-03-24 15:24:35,437 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 107 transitions, 933 flow [2021-03-24 15:24:35,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:35,437 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:35,437 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:35,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 15:24:35,437 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:35,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:35,438 INFO L82 PathProgramCache]: Analyzing trace with hash -333123220, now seen corresponding path program 5 times [2021-03-24 15:24:35,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:35,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205936100] [2021-03-24 15:24:35,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:35,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:35,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:35,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:35,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:35,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205936100] [2021-03-24 15:24:35,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:35,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 15:24:35,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071018562] [2021-03-24 15:24:35,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 15:24:35,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:35,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 15:24:35,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 15:24:35,509 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:35,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 107 transitions, 933 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:35,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:35,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:35,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:35,826 INFO L129 PetriNetUnfolder]: 1454/2978 cut-off events. [2021-03-24 15:24:35,827 INFO L130 PetriNetUnfolder]: For 9123/9617 co-relation queries the response was YES. [2021-03-24 15:24:35,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11484 conditions, 2978 events. 1454/2978 cut-off events. For 9123/9617 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 22731 event pairs, 361 based on Foata normal form. 242/3079 useless extension candidates. Maximal degree in co-relation 11307. Up to 1794 conditions per place. [2021-03-24 15:24:35,898 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 77 selfloop transitions, 41 changer transitions 0/135 dead transitions. [2021-03-24 15:24:35,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 135 transitions, 1386 flow [2021-03-24 15:24:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 15:24:35,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 15:24:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2021-03-24 15:24:35,899 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7627906976744186 [2021-03-24 15:24:35,899 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 164 transitions. [2021-03-24 15:24:35,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 164 transitions. [2021-03-24 15:24:35,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:35,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 164 transitions. [2021-03-24 15:24:35,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:35,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 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) [2021-03-24 15:24:35,901 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 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) [2021-03-24 15:24:35,901 INFO L185 Difference]: Start difference. First operand has 56 places, 107 transitions, 933 flow. Second operand 5 states and 164 transitions. [2021-03-24 15:24:35,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 135 transitions, 1386 flow [2021-03-24 15:24:35,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 135 transitions, 1367 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-24 15:24:35,914 INFO L241 Difference]: Finished difference. Result has 60 places, 116 transitions, 1143 flow [2021-03-24 15:24:35,914 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1143, PETRI_PLACES=60, PETRI_TRANSITIONS=116} [2021-03-24 15:24:35,914 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2021-03-24 15:24:35,914 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 116 transitions, 1143 flow [2021-03-24 15:24:35,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:35,915 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:35,915 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:35,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 15:24:35,915 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:35,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:35,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1004966948, now seen corresponding path program 6 times [2021-03-24 15:24:35,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:35,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940450124] [2021-03-24 15:24:35,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:35,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:35,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:35,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:35,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:35,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:35,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:35,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:35,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:35,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940450124] [2021-03-24 15:24:35,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:35,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:24:35,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535117377] [2021-03-24 15:24:35,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:24:35,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:35,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:24:35,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:24:35,991 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:35,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 116 transitions, 1143 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:35,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:35,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:35,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:36,426 INFO L129 PetriNetUnfolder]: 1626/3251 cut-off events. [2021-03-24 15:24:36,426 INFO L130 PetriNetUnfolder]: For 13001/13867 co-relation queries the response was YES. [2021-03-24 15:24:36,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13172 conditions, 3251 events. 1626/3251 cut-off events. For 13001/13867 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 24773 event pairs, 280 based on Foata normal form. 415/3505 useless extension candidates. Maximal degree in co-relation 13062. Up to 775 conditions per place. [2021-03-24 15:24:36,467 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 39 selfloop transitions, 104 changer transitions 0/160 dead transitions. [2021-03-24 15:24:36,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 160 transitions, 1781 flow [2021-03-24 15:24:36,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:24:36,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:24:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-03-24 15:24:36,469 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-03-24 15:24:36,469 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-03-24 15:24:36,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-03-24 15:24:36,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:36,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-03-24 15:24:36,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:36,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:36,471 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:36,471 INFO L185 Difference]: Start difference. First operand has 60 places, 116 transitions, 1143 flow. Second operand 9 states and 301 transitions. [2021-03-24 15:24:36,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 160 transitions, 1781 flow [2021-03-24 15:24:36,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 160 transitions, 1730 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 15:24:36,488 INFO L241 Difference]: Finished difference. Result has 68 places, 134 transitions, 1562 flow [2021-03-24 15:24:36,490 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1562, PETRI_PLACES=68, PETRI_TRANSITIONS=134} [2021-03-24 15:24:36,490 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2021-03-24 15:24:36,490 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 134 transitions, 1562 flow [2021-03-24 15:24:36,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:36,491 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:36,491 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:36,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 15:24:36,492 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:36,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:36,492 INFO L82 PathProgramCache]: Analyzing trace with hash -2035900760, now seen corresponding path program 7 times [2021-03-24 15:24:36,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:36,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580028368] [2021-03-24 15:24:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:36,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:36,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:36,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:36,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:36,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:36,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:36,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:36,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:36,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580028368] [2021-03-24 15:24:36,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:36,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 15:24:36,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018739546] [2021-03-24 15:24:36,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 15:24:36,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:36,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 15:24:36,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 15:24:36,539 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:36,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 134 transitions, 1562 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:36,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:36,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:36,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:36,888 INFO L129 PetriNetUnfolder]: 1322/2830 cut-off events. [2021-03-24 15:24:36,888 INFO L130 PetriNetUnfolder]: For 12912/13413 co-relation queries the response was YES. [2021-03-24 15:24:36,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12437 conditions, 2830 events. 1322/2830 cut-off events. For 12912/13413 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 22135 event pairs, 428 based on Foata normal form. 197/2915 useless extension candidates. Maximal degree in co-relation 12276. Up to 1740 conditions per place. [2021-03-24 15:24:36,917 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 83 selfloop transitions, 59 changer transitions 1/160 dead transitions. [2021-03-24 15:24:36,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 160 transitions, 2117 flow [2021-03-24 15:24:36,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 15:24:36,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 15:24:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2021-03-24 15:24:36,919 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7627906976744186 [2021-03-24 15:24:36,919 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 164 transitions. [2021-03-24 15:24:36,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 164 transitions. [2021-03-24 15:24:36,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:36,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 164 transitions. [2021-03-24 15:24:36,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:36,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 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) [2021-03-24 15:24:36,920 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 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) [2021-03-24 15:24:36,921 INFO L185 Difference]: Start difference. First operand has 68 places, 134 transitions, 1562 flow. Second operand 5 states and 164 transitions. [2021-03-24 15:24:36,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 160 transitions, 2117 flow [2021-03-24 15:24:36,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 160 transitions, 1941 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-24 15:24:36,939 INFO L241 Difference]: Finished difference. Result has 70 places, 143 transitions, 1704 flow [2021-03-24 15:24:36,940 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1704, PETRI_PLACES=70, PETRI_TRANSITIONS=143} [2021-03-24 15:24:36,940 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2021-03-24 15:24:36,940 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 143 transitions, 1704 flow [2021-03-24 15:24:36,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:36,940 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:36,940 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:36,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 15:24:36,940 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:36,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:36,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1382283810, now seen corresponding path program 8 times [2021-03-24 15:24:36,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:36,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238750698] [2021-03-24 15:24:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:36,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:36,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:36,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:36,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:36,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:36,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:36,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:36,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:36,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:36,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:36,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:36,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:36,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238750698] [2021-03-24 15:24:36,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:36,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:24:36,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277889873] [2021-03-24 15:24:36,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:24:36,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:36,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:24:36,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:24:36,998 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:36,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 143 transitions, 1704 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:36,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:36,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:36,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:37,372 INFO L129 PetriNetUnfolder]: 1343/2799 cut-off events. [2021-03-24 15:24:37,372 INFO L130 PetriNetUnfolder]: For 12826/13985 co-relation queries the response was YES. [2021-03-24 15:24:37,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11926 conditions, 2799 events. 1343/2799 cut-off events. For 12826/13985 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 21578 event pairs, 245 based on Foata normal form. 266/2938 useless extension candidates. Maximal degree in co-relation 11800. Up to 665 conditions per place. [2021-03-24 15:24:37,399 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 30 selfloop transitions, 116 changer transitions 0/163 dead transitions. [2021-03-24 15:24:37,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 163 transitions, 2152 flow [2021-03-24 15:24:37,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:24:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:24:37,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2021-03-24 15:24:37,400 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7774086378737541 [2021-03-24 15:24:37,401 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2021-03-24 15:24:37,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2021-03-24 15:24:37,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:37,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2021-03-24 15:24:37,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:37,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:37,403 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:37,403 INFO L185 Difference]: Start difference. First operand has 70 places, 143 transitions, 1704 flow. Second operand 7 states and 234 transitions. [2021-03-24 15:24:37,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 163 transitions, 2152 flow [2021-03-24 15:24:37,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 163 transitions, 2091 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 15:24:37,422 INFO L241 Difference]: Finished difference. Result has 76 places, 148 transitions, 2023 flow [2021-03-24 15:24:37,423 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2023, PETRI_PLACES=76, PETRI_TRANSITIONS=148} [2021-03-24 15:24:37,423 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2021-03-24 15:24:37,423 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 148 transitions, 2023 flow [2021-03-24 15:24:37,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:37,423 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:37,424 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:37,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 15:24:37,424 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:37,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:37,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1902765654, now seen corresponding path program 9 times [2021-03-24 15:24:37,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:37,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263676864] [2021-03-24 15:24:37,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:37,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:37,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:37,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:37,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:37,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:37,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:37,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:37,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:37,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263676864] [2021-03-24 15:24:37,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:37,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:24:37,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139743205] [2021-03-24 15:24:37,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 15:24:37,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:37,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 15:24:37,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 15:24:37,475 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:37,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 148 transitions, 2023 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:37,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:37,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:37,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:37,773 INFO L129 PetriNetUnfolder]: 927/2114 cut-off events. [2021-03-24 15:24:37,773 INFO L130 PetriNetUnfolder]: For 10553/11026 co-relation queries the response was YES. [2021-03-24 15:24:37,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9645 conditions, 2114 events. 927/2114 cut-off events. For 10553/11026 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 15983 event pairs, 200 based on Foata normal form. 334/2362 useless extension candidates. Maximal degree in co-relation 9502. Up to 724 conditions per place. [2021-03-24 15:24:37,793 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 50 selfloop transitions, 96 changer transitions 0/163 dead transitions. [2021-03-24 15:24:37,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 163 transitions, 2367 flow [2021-03-24 15:24:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 15:24:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 15:24:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2021-03-24 15:24:37,795 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7751937984496124 [2021-03-24 15:24:37,795 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 200 transitions. [2021-03-24 15:24:37,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 200 transitions. [2021-03-24 15:24:37,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:37,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 200 transitions. [2021-03-24 15:24:37,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.333333333333336) internal successors, (200), 6 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:37,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:37,797 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:37,797 INFO L185 Difference]: Start difference. First operand has 76 places, 148 transitions, 2023 flow. Second operand 6 states and 200 transitions. [2021-03-24 15:24:37,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 163 transitions, 2367 flow [2021-03-24 15:24:37,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 163 transitions, 2195 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 15:24:37,814 INFO L241 Difference]: Finished difference. Result has 78 places, 146 transitions, 1998 flow [2021-03-24 15:24:37,814 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1998, PETRI_PLACES=78, PETRI_TRANSITIONS=146} [2021-03-24 15:24:37,814 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 38 predicate places. [2021-03-24 15:24:37,814 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 146 transitions, 1998 flow [2021-03-24 15:24:37,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:37,815 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:37,815 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:37,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 15:24:37,815 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:37,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:37,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1013164464, now seen corresponding path program 10 times [2021-03-24 15:24:37,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:37,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482827527] [2021-03-24 15:24:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:37,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:37,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:37,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:37,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:37,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:37,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:37,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:37,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:37,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:37,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482827527] [2021-03-24 15:24:37,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:37,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:24:37,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587601943] [2021-03-24 15:24:37,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:24:37,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:37,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:24:37,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:24:37,892 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:37,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 146 transitions, 1998 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:37,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:37,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:37,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:38,239 INFO L129 PetriNetUnfolder]: 928/2139 cut-off events. [2021-03-24 15:24:38,239 INFO L130 PetriNetUnfolder]: For 12358/12799 co-relation queries the response was YES. [2021-03-24 15:24:38,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9925 conditions, 2139 events. 928/2139 cut-off events. For 12358/12799 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 16514 event pairs, 199 based on Foata normal form. 298/2354 useless extension candidates. Maximal degree in co-relation 9800. Up to 727 conditions per place. [2021-03-24 15:24:38,257 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 59 selfloop transitions, 111 changer transitions 3/190 dead transitions. [2021-03-24 15:24:38,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 190 transitions, 2814 flow [2021-03-24 15:24:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:24:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:24:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-03-24 15:24:38,259 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7819767441860465 [2021-03-24 15:24:38,259 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-03-24 15:24:38,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-03-24 15:24:38,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:38,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-03-24 15:24:38,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:38,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:38,261 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:38,261 INFO L185 Difference]: Start difference. First operand has 78 places, 146 transitions, 1998 flow. Second operand 8 states and 269 transitions. [2021-03-24 15:24:38,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 190 transitions, 2814 flow [2021-03-24 15:24:38,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 190 transitions, 2650 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-24 15:24:38,280 INFO L241 Difference]: Finished difference. Result has 83 places, 160 transitions, 2325 flow [2021-03-24 15:24:38,281 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2325, PETRI_PLACES=83, PETRI_TRANSITIONS=160} [2021-03-24 15:24:38,281 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 43 predicate places. [2021-03-24 15:24:38,281 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 160 transitions, 2325 flow [2021-03-24 15:24:38,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:38,281 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:38,281 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:38,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 15:24:38,282 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:38,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:38,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1976959810, now seen corresponding path program 11 times [2021-03-24 15:24:38,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:38,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712818847] [2021-03-24 15:24:38,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:38,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:38,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:38,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:38,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:38,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:38,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:38,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:38,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:38,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712818847] [2021-03-24 15:24:38,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:38,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:24:38,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258817742] [2021-03-24 15:24:38,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:24:38,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:38,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:24:38,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:24:38,318 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:38,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 160 transitions, 2325 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:38,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:38,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:38,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:38,625 INFO L129 PetriNetUnfolder]: 814/1973 cut-off events. [2021-03-24 15:24:38,625 INFO L130 PetriNetUnfolder]: For 12146/12569 co-relation queries the response was YES. [2021-03-24 15:24:38,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9323 conditions, 1973 events. 814/1973 cut-off events. For 12146/12569 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15384 event pairs, 186 based on Foata normal form. 282/2183 useless extension candidates. Maximal degree in co-relation 9193. Up to 699 conditions per place. [2021-03-24 15:24:38,642 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 58 selfloop transitions, 111 changer transitions 14/200 dead transitions. [2021-03-24 15:24:38,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 200 transitions, 3123 flow [2021-03-24 15:24:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:24:38,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:24:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-03-24 15:24:38,643 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7819767441860465 [2021-03-24 15:24:38,643 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-03-24 15:24:38,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-03-24 15:24:38,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:38,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-03-24 15:24:38,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:38,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:38,645 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:38,645 INFO L185 Difference]: Start difference. First operand has 83 places, 160 transitions, 2325 flow. Second operand 8 states and 269 transitions. [2021-03-24 15:24:38,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 200 transitions, 3123 flow [2021-03-24 15:24:38,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 200 transitions, 2953 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-24 15:24:38,667 INFO L241 Difference]: Finished difference. Result has 88 places, 160 transitions, 2385 flow [2021-03-24 15:24:38,668 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2385, PETRI_PLACES=88, PETRI_TRANSITIONS=160} [2021-03-24 15:24:38,668 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2021-03-24 15:24:38,668 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 160 transitions, 2385 flow [2021-03-24 15:24:38,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:38,668 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:38,668 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:38,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 15:24:38,669 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:38,669 INFO L82 PathProgramCache]: Analyzing trace with hash 432190734, now seen corresponding path program 12 times [2021-03-24 15:24:38,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:38,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765366099] [2021-03-24 15:24:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:38,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:38,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:38,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:38,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:38,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:38,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:38,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:38,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765366099] [2021-03-24 15:24:38,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:38,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:24:38,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076512210] [2021-03-24 15:24:38,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:24:38,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:38,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:24:38,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:24:38,702 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:38,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 160 transitions, 2385 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:38,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:38,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:38,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:38,979 INFO L129 PetriNetUnfolder]: 647/1650 cut-off events. [2021-03-24 15:24:38,980 INFO L130 PetriNetUnfolder]: For 11121/11463 co-relation queries the response was YES. [2021-03-24 15:24:38,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8167 conditions, 1650 events. 647/1650 cut-off events. For 11121/11463 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12768 event pairs, 184 based on Foata normal form. 210/1807 useless extension candidates. Maximal degree in co-relation 8066. Up to 601 conditions per place. [2021-03-24 15:24:38,993 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 57 selfloop transitions, 123 changer transitions 11/208 dead transitions. [2021-03-24 15:24:38,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 208 transitions, 3409 flow [2021-03-24 15:24:38,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:24:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:24:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-03-24 15:24:38,994 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7819767441860465 [2021-03-24 15:24:38,994 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-03-24 15:24:38,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-03-24 15:24:38,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:38,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-03-24 15:24:38,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:38,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:38,996 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:38,996 INFO L185 Difference]: Start difference. First operand has 88 places, 160 transitions, 2385 flow. Second operand 8 states and 269 transitions. [2021-03-24 15:24:38,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 208 transitions, 3409 flow [2021-03-24 15:24:39,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 208 transitions, 3256 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 15:24:39,019 INFO L241 Difference]: Finished difference. Result has 93 places, 173 transitions, 2783 flow [2021-03-24 15:24:39,019 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2783, PETRI_PLACES=93, PETRI_TRANSITIONS=173} [2021-03-24 15:24:39,019 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 53 predicate places. [2021-03-24 15:24:39,020 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 173 transitions, 2783 flow [2021-03-24 15:24:39,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:39,020 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:39,020 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:39,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 15:24:39,020 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:39,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:39,020 INFO L82 PathProgramCache]: Analyzing trace with hash 641901706, now seen corresponding path program 13 times [2021-03-24 15:24:39,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:39,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296784659] [2021-03-24 15:24:39,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:39,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:39,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:39,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296784659] [2021-03-24 15:24:39,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:39,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:24:39,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885706924] [2021-03-24 15:24:39,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:24:39,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:39,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:24:39,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:24:39,062 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:39,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 173 transitions, 2783 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:39,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:39,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:39,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:39,363 INFO L129 PetriNetUnfolder]: 637/1644 cut-off events. [2021-03-24 15:24:39,364 INFO L130 PetriNetUnfolder]: For 12158/12419 co-relation queries the response was YES. [2021-03-24 15:24:39,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8534 conditions, 1644 events. 637/1644 cut-off events. For 12158/12419 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12867 event pairs, 174 based on Foata normal form. 146/1736 useless extension candidates. Maximal degree in co-relation 8436. Up to 434 conditions per place. [2021-03-24 15:24:39,378 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 39 selfloop transitions, 129 changer transitions 27/212 dead transitions. [2021-03-24 15:24:39,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 212 transitions, 3594 flow [2021-03-24 15:24:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:24:39,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:24:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 302 transitions. [2021-03-24 15:24:39,379 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7803617571059431 [2021-03-24 15:24:39,380 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 302 transitions. [2021-03-24 15:24:39,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 302 transitions. [2021-03-24 15:24:39,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:39,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 302 transitions. [2021-03-24 15:24:39,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.55555555555556) internal successors, (302), 9 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:39,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:39,382 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:39,382 INFO L185 Difference]: Start difference. First operand has 93 places, 173 transitions, 2783 flow. Second operand 9 states and 302 transitions. [2021-03-24 15:24:39,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 212 transitions, 3594 flow [2021-03-24 15:24:39,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 212 transitions, 3550 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-24 15:24:39,412 INFO L241 Difference]: Finished difference. Result has 100 places, 161 transitions, 2773 flow [2021-03-24 15:24:39,413 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2742, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2773, PETRI_PLACES=100, PETRI_TRANSITIONS=161} [2021-03-24 15:24:39,413 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 60 predicate places. [2021-03-24 15:24:39,413 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 161 transitions, 2773 flow [2021-03-24 15:24:39,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:39,414 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:39,414 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, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:39,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 15:24:39,414 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:39,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:39,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1036746872, now seen corresponding path program 14 times [2021-03-24 15:24:39,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:39,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209168397] [2021-03-24 15:24:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:39,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:39,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:24:39,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:39,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209168397] [2021-03-24 15:24:39,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:39,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:24:39,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601253215] [2021-03-24 15:24:39,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:24:39,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:39,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:24:39,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:24:39,467 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:39,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 161 transitions, 2773 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:39,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:39,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:39,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:39,732 INFO L129 PetriNetUnfolder]: 623/1653 cut-off events. [2021-03-24 15:24:39,732 INFO L130 PetriNetUnfolder]: For 13615/13867 co-relation queries the response was YES. [2021-03-24 15:24:39,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8642 conditions, 1653 events. 623/1653 cut-off events. For 13615/13867 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13023 event pairs, 63 based on Foata normal form. 128/1710 useless extension candidates. Maximal degree in co-relation 8517. Up to 416 conditions per place. [2021-03-24 15:24:39,746 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 47 selfloop transitions, 147 changer transitions 1/212 dead transitions. [2021-03-24 15:24:39,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 212 transitions, 3604 flow [2021-03-24 15:24:39,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:24:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:24:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2021-03-24 15:24:39,747 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7774086378737541 [2021-03-24 15:24:39,747 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2021-03-24 15:24:39,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2021-03-24 15:24:39,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:39,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2021-03-24 15:24:39,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:39,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:39,750 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:39,750 INFO L185 Difference]: Start difference. First operand has 100 places, 161 transitions, 2773 flow. Second operand 7 states and 234 transitions. [2021-03-24 15:24:39,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 212 transitions, 3604 flow [2021-03-24 15:24:39,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 212 transitions, 3459 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-24 15:24:39,783 INFO L241 Difference]: Finished difference. Result has 104 places, 187 transitions, 3362 flow [2021-03-24 15:24:39,783 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2640, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3362, PETRI_PLACES=104, PETRI_TRANSITIONS=187} [2021-03-24 15:24:39,784 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 64 predicate places. [2021-03-24 15:24:39,784 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 187 transitions, 3362 flow [2021-03-24 15:24:39,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:39,784 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:39,784 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:39,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 15:24:39,784 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:39,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:39,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1298701148, now seen corresponding path program 15 times [2021-03-24 15:24:39,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:39,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890443362] [2021-03-24 15:24:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:39,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:39,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:39,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:39,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:39,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890443362] [2021-03-24 15:24:39,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:39,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:24:39,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197858804] [2021-03-24 15:24:39,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:24:39,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:39,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:24:39,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:24:39,848 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:39,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 187 transitions, 3362 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:39,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:39,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:39,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:40,211 INFO L129 PetriNetUnfolder]: 607/1643 cut-off events. [2021-03-24 15:24:40,211 INFO L130 PetriNetUnfolder]: For 18402/18671 co-relation queries the response was YES. [2021-03-24 15:24:40,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9428 conditions, 1643 events. 607/1643 cut-off events. For 18402/18671 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13124 event pairs, 117 based on Foata normal form. 85/1674 useless extension candidates. Maximal degree in co-relation 9305. Up to 528 conditions per place. [2021-03-24 15:24:40,226 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 65 selfloop transitions, 133 changer transitions 6/221 dead transitions. [2021-03-24 15:24:40,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 221 transitions, 4122 flow [2021-03-24 15:24:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:24:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:24:40,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 305 transitions. [2021-03-24 15:24:40,228 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7881136950904393 [2021-03-24 15:24:40,228 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 305 transitions. [2021-03-24 15:24:40,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 305 transitions. [2021-03-24 15:24:40,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:40,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 305 transitions. [2021-03-24 15:24:40,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.888888888888886) internal successors, (305), 9 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:40,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:40,231 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:40,231 INFO L185 Difference]: Start difference. First operand has 104 places, 187 transitions, 3362 flow. Second operand 9 states and 305 transitions. [2021-03-24 15:24:40,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 221 transitions, 4122 flow [2021-03-24 15:24:40,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 221 transitions, 4010 flow, removed 37 selfloop flow, removed 3 redundant places. [2021-03-24 15:24:40,269 INFO L241 Difference]: Finished difference. Result has 110 places, 189 transitions, 3541 flow [2021-03-24 15:24:40,269 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3247, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3541, PETRI_PLACES=110, PETRI_TRANSITIONS=189} [2021-03-24 15:24:40,269 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 70 predicate places. [2021-03-24 15:24:40,270 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 189 transitions, 3541 flow [2021-03-24 15:24:40,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:40,270 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:40,270 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:40,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 15:24:40,270 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:40,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:40,270 INFO L82 PathProgramCache]: Analyzing trace with hash -929959648, now seen corresponding path program 16 times [2021-03-24 15:24:40,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:40,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267263943] [2021-03-24 15:24:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:40,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:40,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:40,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:40,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:40,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:24:40,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:40,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:40,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:40,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267263943] [2021-03-24 15:24:40,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:40,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:24:40,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030774031] [2021-03-24 15:24:40,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:24:40,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:40,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:24:40,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:24:40,316 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:40,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 189 transitions, 3541 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:40,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:40,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:40,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:40,579 INFO L129 PetriNetUnfolder]: 550/1520 cut-off events. [2021-03-24 15:24:40,579 INFO L130 PetriNetUnfolder]: For 19258/19524 co-relation queries the response was YES. [2021-03-24 15:24:40,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9093 conditions, 1520 events. 550/1520 cut-off events. For 19258/19524 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12117 event pairs, 52 based on Foata normal form. 130/1602 useless extension candidates. Maximal degree in co-relation 8977. Up to 372 conditions per place. [2021-03-24 15:24:40,594 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 45 selfloop transitions, 147 changer transitions 3/212 dead transitions. [2021-03-24 15:24:40,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 212 transitions, 4131 flow [2021-03-24 15:24:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:24:40,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:24:40,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2021-03-24 15:24:40,596 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7774086378737541 [2021-03-24 15:24:40,596 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2021-03-24 15:24:40,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2021-03-24 15:24:40,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:40,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2021-03-24 15:24:40,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:40,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:40,597 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:40,598 INFO L185 Difference]: Start difference. First operand has 110 places, 189 transitions, 3541 flow. Second operand 7 states and 234 transitions. [2021-03-24 15:24:40,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 212 transitions, 4131 flow [2021-03-24 15:24:40,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 212 transitions, 3950 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 15:24:40,639 INFO L241 Difference]: Finished difference. Result has 111 places, 192 transitions, 3690 flow [2021-03-24 15:24:40,639 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3368, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3690, PETRI_PLACES=111, PETRI_TRANSITIONS=192} [2021-03-24 15:24:40,639 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 71 predicate places. [2021-03-24 15:24:40,639 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 192 transitions, 3690 flow [2021-03-24 15:24:40,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:40,640 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:40,640 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:40,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 15:24:40,640 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:40,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:40,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1185492156, now seen corresponding path program 17 times [2021-03-24 15:24:40,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:40,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580158402] [2021-03-24 15:24:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:40,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:40,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:40,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:40,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:40,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:40,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:40,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:40,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:40,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:40,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580158402] [2021-03-24 15:24:40,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:40,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:24:40,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033808881] [2021-03-24 15:24:40,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:24:40,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:40,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:24:40,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:24:40,694 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:40,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 192 transitions, 3690 flow. Second operand has 9 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) [2021-03-24 15:24:40,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:40,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:40,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:41,072 INFO L129 PetriNetUnfolder]: 542/1532 cut-off events. [2021-03-24 15:24:41,072 INFO L130 PetriNetUnfolder]: For 21670/21906 co-relation queries the response was YES. [2021-03-24 15:24:41,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9477 conditions, 1532 events. 542/1532 cut-off events. For 21670/21906 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12334 event pairs, 108 based on Foata normal form. 81/1569 useless extension candidates. Maximal degree in co-relation 9358. Up to 475 conditions per place. [2021-03-24 15:24:41,086 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 65 selfloop transitions, 117 changer transitions 34/233 dead transitions. [2021-03-24 15:24:41,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 233 transitions, 4525 flow [2021-03-24 15:24:41,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-24 15:24:41,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-24 15:24:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 393 transitions. [2021-03-24 15:24:41,088 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7616279069767442 [2021-03-24 15:24:41,088 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 393 transitions. [2021-03-24 15:24:41,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 393 transitions. [2021-03-24 15:24:41,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:41,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 393 transitions. [2021-03-24 15:24:41,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:41,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 43.0) internal successors, (559), 13 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:41,090 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 43.0) internal successors, (559), 13 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:41,091 INFO L185 Difference]: Start difference. First operand has 111 places, 192 transitions, 3690 flow. Second operand 12 states and 393 transitions. [2021-03-24 15:24:41,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 233 transitions, 4525 flow [2021-03-24 15:24:41,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 233 transitions, 4267 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-24 15:24:41,132 INFO L241 Difference]: Finished difference. Result has 118 places, 177 transitions, 3350 flow [2021-03-24 15:24:41,133 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3454, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3350, PETRI_PLACES=118, PETRI_TRANSITIONS=177} [2021-03-24 15:24:41,133 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 78 predicate places. [2021-03-24 15:24:41,133 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 177 transitions, 3350 flow [2021-03-24 15:24:41,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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) [2021-03-24 15:24:41,133 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:41,133 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:41,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 15:24:41,134 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:41,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:41,134 INFO L82 PathProgramCache]: Analyzing trace with hash -416961466, now seen corresponding path program 18 times [2021-03-24 15:24:41,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:41,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336560225] [2021-03-24 15:24:41,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:41,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:41,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:41,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:41,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:41,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:41,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:41,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:41,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:41,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336560225] [2021-03-24 15:24:41,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:41,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:24:41,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228991698] [2021-03-24 15:24:41,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:24:41,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:41,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:24:41,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:24:41,187 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:41,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 177 transitions, 3350 flow. Second operand has 9 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) [2021-03-24 15:24:41,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:41,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:41,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:41,562 INFO L129 PetriNetUnfolder]: 508/1447 cut-off events. [2021-03-24 15:24:41,562 INFO L130 PetriNetUnfolder]: For 20398/20636 co-relation queries the response was YES. [2021-03-24 15:24:41,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8768 conditions, 1447 events. 508/1447 cut-off events. For 20398/20636 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11558 event pairs, 103 based on Foata normal form. 70/1476 useless extension candidates. Maximal degree in co-relation 8644. Up to 470 conditions per place. [2021-03-24 15:24:41,575 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 69 selfloop transitions, 116 changer transitions 8/210 dead transitions. [2021-03-24 15:24:41,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 210 transitions, 4022 flow [2021-03-24 15:24:41,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-24 15:24:41,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-24 15:24:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 389 transitions. [2021-03-24 15:24:41,577 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7538759689922481 [2021-03-24 15:24:41,577 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 389 transitions. [2021-03-24 15:24:41,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 389 transitions. [2021-03-24 15:24:41,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:41,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 389 transitions. [2021-03-24 15:24:41,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 32.416666666666664) internal successors, (389), 12 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:41,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 43.0) internal successors, (559), 13 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:41,579 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 43.0) internal successors, (559), 13 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:41,579 INFO L185 Difference]: Start difference. First operand has 118 places, 177 transitions, 3350 flow. Second operand 12 states and 389 transitions. [2021-03-24 15:24:41,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 210 transitions, 4022 flow [2021-03-24 15:24:41,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 210 transitions, 3734 flow, removed 22 selfloop flow, removed 9 redundant places. [2021-03-24 15:24:41,616 INFO L241 Difference]: Finished difference. Result has 117 places, 175 transitions, 3233 flow [2021-03-24 15:24:41,616 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3082, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3233, PETRI_PLACES=117, PETRI_TRANSITIONS=175} [2021-03-24 15:24:41,616 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 77 predicate places. [2021-03-24 15:24:41,616 INFO L480 AbstractCegarLoop]: Abstraction has has 117 places, 175 transitions, 3233 flow [2021-03-24 15:24:41,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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) [2021-03-24 15:24:41,617 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:41,617 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:41,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 15:24:41,617 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:41,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:41,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1154262712, now seen corresponding path program 19 times [2021-03-24 15:24:41,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:41,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443962096] [2021-03-24 15:24:41,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:41,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:41,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:41,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:41,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:41,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:41,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:41,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:41,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:41,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:41,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443962096] [2021-03-24 15:24:41,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:41,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:24:41,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021031929] [2021-03-24 15:24:41,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:24:41,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:41,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:24:41,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:24:41,669 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:41,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 175 transitions, 3233 flow. Second operand has 9 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) [2021-03-24 15:24:41,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:41,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:41,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:42,043 INFO L129 PetriNetUnfolder]: 502/1452 cut-off events. [2021-03-24 15:24:42,044 INFO L130 PetriNetUnfolder]: For 20245/20478 co-relation queries the response was YES. [2021-03-24 15:24:42,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8706 conditions, 1452 events. 502/1452 cut-off events. For 20245/20478 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11665 event pairs, 103 based on Foata normal form. 97/1509 useless extension candidates. Maximal degree in co-relation 8581. Up to 472 conditions per place. [2021-03-24 15:24:42,057 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 68 selfloop transitions, 116 changer transitions 15/216 dead transitions. [2021-03-24 15:24:42,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 216 transitions, 4096 flow [2021-03-24 15:24:42,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-24 15:24:42,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-24 15:24:42,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 390 transitions. [2021-03-24 15:24:42,058 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7558139534883721 [2021-03-24 15:24:42,058 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 390 transitions. [2021-03-24 15:24:42,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 390 transitions. [2021-03-24 15:24:42,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:42,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 390 transitions. [2021-03-24 15:24:42,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 32.5) internal successors, (390), 12 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:42,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 43.0) internal successors, (559), 13 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:42,060 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 43.0) internal successors, (559), 13 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:42,060 INFO L185 Difference]: Start difference. First operand has 117 places, 175 transitions, 3233 flow. Second operand 12 states and 390 transitions. [2021-03-24 15:24:42,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 216 transitions, 4096 flow [2021-03-24 15:24:42,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 216 transitions, 3734 flow, removed 0 selfloop flow, removed 11 redundant places. [2021-03-24 15:24:42,093 INFO L241 Difference]: Finished difference. Result has 119 places, 175 transitions, 3080 flow [2021-03-24 15:24:42,094 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2889, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3080, PETRI_PLACES=119, PETRI_TRANSITIONS=175} [2021-03-24 15:24:42,094 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 79 predicate places. [2021-03-24 15:24:42,094 INFO L480 AbstractCegarLoop]: Abstraction has has 119 places, 175 transitions, 3080 flow [2021-03-24 15:24:42,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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) [2021-03-24 15:24:42,094 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:42,094 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:42,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-24 15:24:42,094 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:42,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:42,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1132736334, now seen corresponding path program 20 times [2021-03-24 15:24:42,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:42,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155380258] [2021-03-24 15:24:42,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:42,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:42,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:24:42,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:42,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155380258] [2021-03-24 15:24:42,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:42,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:24:42,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490019971] [2021-03-24 15:24:42,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:24:42,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:42,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:24:42,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:24:42,140 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:42,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 175 transitions, 3080 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:42,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:42,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:42,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:42,363 INFO L129 PetriNetUnfolder]: 411/1243 cut-off events. [2021-03-24 15:24:42,363 INFO L130 PetriNetUnfolder]: For 18622/18862 co-relation queries the response was YES. [2021-03-24 15:24:42,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7713 conditions, 1243 events. 411/1243 cut-off events. For 18622/18862 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9802 event pairs, 41 based on Foata normal form. 121/1331 useless extension candidates. Maximal degree in co-relation 7592. Up to 297 conditions per place. [2021-03-24 15:24:42,372 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 39 selfloop transitions, 138 changer transitions 7/201 dead transitions. [2021-03-24 15:24:42,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 201 transitions, 3738 flow [2021-03-24 15:24:42,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:24:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:24:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2021-03-24 15:24:42,373 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7774086378737541 [2021-03-24 15:24:42,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2021-03-24 15:24:42,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2021-03-24 15:24:42,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:42,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2021-03-24 15:24:42,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:42,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:42,375 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:42,375 INFO L185 Difference]: Start difference. First operand has 119 places, 175 transitions, 3080 flow. Second operand 7 states and 234 transitions. [2021-03-24 15:24:42,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 201 transitions, 3738 flow [2021-03-24 15:24:42,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 201 transitions, 3667 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 15:24:42,419 INFO L241 Difference]: Finished difference. Result has 123 places, 178 transitions, 3369 flow [2021-03-24 15:24:42,419 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3011, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3369, PETRI_PLACES=123, PETRI_TRANSITIONS=178} [2021-03-24 15:24:42,419 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 83 predicate places. [2021-03-24 15:24:42,419 INFO L480 AbstractCegarLoop]: Abstraction has has 123 places, 178 transitions, 3369 flow [2021-03-24 15:24:42,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:42,426 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:42,426 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:42,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-24 15:24:42,426 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:42,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:42,426 INFO L82 PathProgramCache]: Analyzing trace with hash -2081954616, now seen corresponding path program 21 times [2021-03-24 15:24:42,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:42,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164944972] [2021-03-24 15:24:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:42,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:42,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:24:42,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:42,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164944972] [2021-03-24 15:24:42,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:42,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:24:42,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096690668] [2021-03-24 15:24:42,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:24:42,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:42,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:24:42,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:24:42,471 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:42,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 178 transitions, 3369 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:42,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:42,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:42,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:42,744 INFO L129 PetriNetUnfolder]: 406/1250 cut-off events. [2021-03-24 15:24:42,744 INFO L130 PetriNetUnfolder]: For 20959/21136 co-relation queries the response was YES. [2021-03-24 15:24:42,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8167 conditions, 1250 events. 406/1250 cut-off events. For 20959/21136 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9952 event pairs, 48 based on Foata normal form. 97/1314 useless extension candidates. Maximal degree in co-relation 8042. Up to 279 conditions per place. [2021-03-24 15:24:42,754 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 46 selfloop transitions, 135 changer transitions 16/214 dead transitions. [2021-03-24 15:24:42,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 214 transitions, 4167 flow [2021-03-24 15:24:42,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:24:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:24:42,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-03-24 15:24:42,756 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7751937984496124 [2021-03-24 15:24:42,756 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-03-24 15:24:42,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-03-24 15:24:42,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:42,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-03-24 15:24:42,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 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) [2021-03-24 15:24:42,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:42,757 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:42,757 INFO L185 Difference]: Start difference. First operand has 123 places, 178 transitions, 3369 flow. Second operand 9 states and 300 transitions. [2021-03-24 15:24:42,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 214 transitions, 4167 flow [2021-03-24 15:24:42,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 214 transitions, 3914 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-03-24 15:24:42,790 INFO L241 Difference]: Finished difference. Result has 126 places, 176 transitions, 3410 flow [2021-03-24 15:24:42,790 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3155, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3410, PETRI_PLACES=126, PETRI_TRANSITIONS=176} [2021-03-24 15:24:42,790 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 86 predicate places. [2021-03-24 15:24:42,790 INFO L480 AbstractCegarLoop]: Abstraction has has 126 places, 176 transitions, 3410 flow [2021-03-24 15:24:42,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:42,790 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:42,790 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:42,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-24 15:24:42,791 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:42,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:42,791 INFO L82 PathProgramCache]: Analyzing trace with hash -623348214, now seen corresponding path program 22 times [2021-03-24 15:24:42,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:42,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284884288] [2021-03-24 15:24:42,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:42,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:42,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:24:42,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:42,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:42,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:42,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284884288] [2021-03-24 15:24:42,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:42,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:24:42,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687210348] [2021-03-24 15:24:42,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:24:42,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:42,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:24:42,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:24:42,828 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:42,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 176 transitions, 3410 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:42,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:42,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:42,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:43,102 INFO L129 PetriNetUnfolder]: 381/1200 cut-off events. [2021-03-24 15:24:43,102 INFO L130 PetriNetUnfolder]: For 21352/21526 co-relation queries the response was YES. [2021-03-24 15:24:43,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8000 conditions, 1200 events. 381/1200 cut-off events. For 21352/21526 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9591 event pairs, 45 based on Foata normal form. 100/1268 useless extension candidates. Maximal degree in co-relation 7885. Up to 268 conditions per place. [2021-03-24 15:24:43,112 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 43 selfloop transitions, 139 changer transitions 6/205 dead transitions. [2021-03-24 15:24:43,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 205 transitions, 4084 flow [2021-03-24 15:24:43,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:24:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:24:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-03-24 15:24:43,113 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7674418604651163 [2021-03-24 15:24:43,113 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-03-24 15:24:43,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-03-24 15:24:43,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:43,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-03-24 15:24:43,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,115 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,115 INFO L185 Difference]: Start difference. First operand has 126 places, 176 transitions, 3410 flow. Second operand 9 states and 297 transitions. [2021-03-24 15:24:43,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 205 transitions, 4084 flow [2021-03-24 15:24:43,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 205 transitions, 3800 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-03-24 15:24:43,149 INFO L241 Difference]: Finished difference. Result has 127 places, 178 transitions, 3452 flow [2021-03-24 15:24:43,149 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3146, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3452, PETRI_PLACES=127, PETRI_TRANSITIONS=178} [2021-03-24 15:24:43,149 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 87 predicate places. [2021-03-24 15:24:43,149 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 178 transitions, 3452 flow [2021-03-24 15:24:43,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,149 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:43,150 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:43,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-24 15:24:43,150 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:43,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:43,150 INFO L82 PathProgramCache]: Analyzing trace with hash -423371812, now seen corresponding path program 23 times [2021-03-24 15:24:43,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:43,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895271869] [2021-03-24 15:24:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:43,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:43,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:24:43,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:43,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895271869] [2021-03-24 15:24:43,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:43,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:24:43,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379926491] [2021-03-24 15:24:43,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:24:43,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:43,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:24:43,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:24:43,206 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:43,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 178 transitions, 3452 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:43,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:43,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:43,476 INFO L129 PetriNetUnfolder]: 382/1216 cut-off events. [2021-03-24 15:24:43,476 INFO L130 PetriNetUnfolder]: For 21582/21773 co-relation queries the response was YES. [2021-03-24 15:24:43,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8035 conditions, 1216 events. 382/1216 cut-off events. For 21582/21773 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9774 event pairs, 49 based on Foata normal form. 102/1286 useless extension candidates. Maximal degree in co-relation 7912. Up to 271 conditions per place. [2021-03-24 15:24:43,485 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 43 selfloop transitions, 138 changer transitions 9/207 dead transitions. [2021-03-24 15:24:43,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 207 transitions, 4133 flow [2021-03-24 15:24:43,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:24:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:24:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-03-24 15:24:43,487 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7674418604651163 [2021-03-24 15:24:43,487 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-03-24 15:24:43,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-03-24 15:24:43,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:43,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-03-24 15:24:43,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,488 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,488 INFO L185 Difference]: Start difference. First operand has 127 places, 178 transitions, 3452 flow. Second operand 9 states and 297 transitions. [2021-03-24 15:24:43,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 207 transitions, 4133 flow [2021-03-24 15:24:43,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 207 transitions, 4057 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 15:24:43,522 INFO L241 Difference]: Finished difference. Result has 133 places, 177 transitions, 3632 flow [2021-03-24 15:24:43,522 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3632, PETRI_PLACES=133, PETRI_TRANSITIONS=177} [2021-03-24 15:24:43,522 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 93 predicate places. [2021-03-24 15:24:43,522 INFO L480 AbstractCegarLoop]: Abstraction has has 133 places, 177 transitions, 3632 flow [2021-03-24 15:24:43,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,522 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:43,522 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:43,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-24 15:24:43,523 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:43,523 INFO L82 PathProgramCache]: Analyzing trace with hash 327356944, now seen corresponding path program 24 times [2021-03-24 15:24:43,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:43,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069891033] [2021-03-24 15:24:43,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:43,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:43,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:43,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069891033] [2021-03-24 15:24:43,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:43,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:24:43,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267808886] [2021-03-24 15:24:43,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:24:43,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:43,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:24:43,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:24:43,555 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:43,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 177 transitions, 3632 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:43,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:43,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:43,731 INFO L129 PetriNetUnfolder]: 162/584 cut-off events. [2021-03-24 15:24:43,731 INFO L130 PetriNetUnfolder]: For 9457/9528 co-relation queries the response was YES. [2021-03-24 15:24:43,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4066 conditions, 584 events. 162/584 cut-off events. For 9457/9528 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3998 event pairs, 61 based on Foata normal form. 67/644 useless extension candidates. Maximal degree in co-relation 3991. Up to 272 conditions per place. [2021-03-24 15:24:43,733 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 60 selfloop transitions, 25 changer transitions 36/138 dead transitions. [2021-03-24 15:24:43,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 138 transitions, 2738 flow [2021-03-24 15:24:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:24:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:24:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 260 transitions. [2021-03-24 15:24:43,734 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7558139534883721 [2021-03-24 15:24:43,734 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 260 transitions. [2021-03-24 15:24:43,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 260 transitions. [2021-03-24 15:24:43,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:43,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 260 transitions. [2021-03-24 15:24:43,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,736 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,736 INFO L185 Difference]: Start difference. First operand has 133 places, 177 transitions, 3632 flow. Second operand 8 states and 260 transitions. [2021-03-24 15:24:43,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 138 transitions, 2738 flow [2021-03-24 15:24:43,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 138 transitions, 2501 flow, removed 22 selfloop flow, removed 10 redundant places. [2021-03-24 15:24:43,754 INFO L241 Difference]: Finished difference. Result has 131 places, 90 transitions, 1292 flow [2021-03-24 15:24:43,754 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1292, PETRI_PLACES=131, PETRI_TRANSITIONS=90} [2021-03-24 15:24:43,754 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 91 predicate places. [2021-03-24 15:24:43,754 INFO L480 AbstractCegarLoop]: Abstraction has has 131 places, 90 transitions, 1292 flow [2021-03-24 15:24:43,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,755 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:43,755 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:43,755 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-24 15:24:43,755 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:43,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:43,755 INFO L82 PathProgramCache]: Analyzing trace with hash 599983352, now seen corresponding path program 25 times [2021-03-24 15:24:43,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:43,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129010535] [2021-03-24 15:24:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:43,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:43,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:43,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129010535] [2021-03-24 15:24:43,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:43,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:24:43,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674048363] [2021-03-24 15:24:43,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:24:43,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:43,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:24:43,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:24:43,792 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:43,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 90 transitions, 1292 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:43,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:43,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:43,919 INFO L129 PetriNetUnfolder]: 121/437 cut-off events. [2021-03-24 15:24:43,920 INFO L130 PetriNetUnfolder]: For 4311/4356 co-relation queries the response was YES. [2021-03-24 15:24:43,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2434 conditions, 437 events. 121/437 cut-off events. For 4311/4356 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2675 event pairs, 58 based on Foata normal form. 10/440 useless extension candidates. Maximal degree in co-relation 2355. Up to 246 conditions per place. [2021-03-24 15:24:43,922 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 53 selfloop transitions, 20 changer transitions 9/99 dead transitions. [2021-03-24 15:24:43,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 99 transitions, 1500 flow [2021-03-24 15:24:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:24:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:24:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2021-03-24 15:24:43,933 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7180232558139535 [2021-03-24 15:24:43,933 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 247 transitions. [2021-03-24 15:24:43,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 247 transitions. [2021-03-24 15:24:43,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:43,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 247 transitions. [2021-03-24 15:24:43,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,935 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,935 INFO L185 Difference]: Start difference. First operand has 131 places, 90 transitions, 1292 flow. Second operand 8 states and 247 transitions. [2021-03-24 15:24:43,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 99 transitions, 1500 flow [2021-03-24 15:24:43,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 1140 flow, removed 39 selfloop flow, removed 36 redundant places. [2021-03-24 15:24:43,945 INFO L241 Difference]: Finished difference. Result has 92 places, 78 transitions, 817 flow [2021-03-24 15:24:43,946 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=817, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2021-03-24 15:24:43,946 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2021-03-24 15:24:43,946 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 817 flow [2021-03-24 15:24:43,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,946 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:43,947 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:43,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-24 15:24:43,947 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:43,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:43,947 INFO L82 PathProgramCache]: Analyzing trace with hash 294157248, now seen corresponding path program 26 times [2021-03-24 15:24:43,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:43,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309869004] [2021-03-24 15:24:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:43,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:43,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:24:43,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:43,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:43,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:43,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309869004] [2021-03-24 15:24:43,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:43,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:24:43,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645067120] [2021-03-24 15:24:43,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:24:43,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:43,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:24:43,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:24:43,994 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:43,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 817 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:43,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:43,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:43,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:44,083 INFO L129 PetriNetUnfolder]: 35/154 cut-off events. [2021-03-24 15:24:44,083 INFO L130 PetriNetUnfolder]: For 1461/1475 co-relation queries the response was YES. [2021-03-24 15:24:44,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 154 events. 35/154 cut-off events. For 1461/1475 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 615 event pairs, 2 based on Foata normal form. 34/188 useless extension candidates. Maximal degree in co-relation 843. Up to 45 conditions per place. [2021-03-24 15:24:44,084 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 14 selfloop transitions, 24 changer transitions 17/70 dead transitions. [2021-03-24 15:24:44,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 70 transitions, 834 flow [2021-03-24 15:24:44,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:24:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:24:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2021-03-24 15:24:44,085 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2021-03-24 15:24:44,085 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 215 transitions. [2021-03-24 15:24:44,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 215 transitions. [2021-03-24 15:24:44,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:44,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 215 transitions. [2021-03-24 15:24:44,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:44,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:44,086 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:44,087 INFO L185 Difference]: Start difference. First operand has 92 places, 78 transitions, 817 flow. Second operand 7 states and 215 transitions. [2021-03-24 15:24:44,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 70 transitions, 834 flow [2021-03-24 15:24:44,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 620 flow, removed 25 selfloop flow, removed 23 redundant places. [2021-03-24 15:24:44,091 INFO L241 Difference]: Finished difference. Result has 73 places, 47 transitions, 381 flow [2021-03-24 15:24:44,091 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=381, PETRI_PLACES=73, PETRI_TRANSITIONS=47} [2021-03-24 15:24:44,091 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 33 predicate places. [2021-03-24 15:24:44,091 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 47 transitions, 381 flow [2021-03-24 15:24:44,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:44,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:44,092 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:44,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-24 15:24:44,092 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:44,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1294671458, now seen corresponding path program 27 times [2021-03-24 15:24:44,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:44,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108904716] [2021-03-24 15:24:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:44,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:44,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:44,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:44,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:44,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:44,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:44,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:44,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:44,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108904716] [2021-03-24 15:24:44,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:44,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:24:44,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767738896] [2021-03-24 15:24:44,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:24:44,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:44,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:24:44,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:24:44,153 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:44,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 47 transitions, 381 flow. Second operand has 9 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) [2021-03-24 15:24:44,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:44,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:44,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:44,265 INFO L129 PetriNetUnfolder]: 15/85 cut-off events. [2021-03-24 15:24:44,266 INFO L130 PetriNetUnfolder]: For 495/500 co-relation queries the response was YES. [2021-03-24 15:24:44,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 85 events. 15/85 cut-off events. For 495/500 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 207 event pairs, 6 based on Foata normal form. 3/88 useless extension candidates. Maximal degree in co-relation 315. Up to 32 conditions per place. [2021-03-24 15:24:44,266 INFO L132 encePairwiseOnDemand]: 35/43 looper letters, 16 selfloop transitions, 5 changer transitions 18/54 dead transitions. [2021-03-24 15:24:44,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 54 transitions, 477 flow [2021-03-24 15:24:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:24:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:24:44,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 262 transitions. [2021-03-24 15:24:44,268 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6770025839793282 [2021-03-24 15:24:44,268 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 262 transitions. [2021-03-24 15:24:44,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 262 transitions. [2021-03-24 15:24:44,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:44,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 262 transitions. [2021-03-24 15:24:44,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 29.11111111111111) internal successors, (262), 9 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:44,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:44,272 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:44,272 INFO L185 Difference]: Start difference. First operand has 73 places, 47 transitions, 381 flow. Second operand 9 states and 262 transitions. [2021-03-24 15:24:44,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 54 transitions, 477 flow [2021-03-24 15:24:44,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 54 transitions, 354 flow, removed 5 selfloop flow, removed 17 redundant places. [2021-03-24 15:24:44,274 INFO L241 Difference]: Finished difference. Result has 63 places, 34 transitions, 167 flow [2021-03-24 15:24:44,274 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=167, PETRI_PLACES=63, PETRI_TRANSITIONS=34} [2021-03-24 15:24:44,274 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 23 predicate places. [2021-03-24 15:24:44,274 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 34 transitions, 167 flow [2021-03-24 15:24:44,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 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) [2021-03-24 15:24:44,275 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:24:44,275 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, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:24:44,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-24 15:24:44,275 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:24:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:24:44,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1742500678, now seen corresponding path program 28 times [2021-03-24 15:24:44,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:24:44,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274208428] [2021-03-24 15:24:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:24:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:24:44,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:24:44,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:44,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:24:44,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:44,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:44,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:44,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:24:44,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:24:44,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:24:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:24:44,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274208428] [2021-03-24 15:24:44,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:24:44,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:24:44,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445783779] [2021-03-24 15:24:44,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:24:44,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:24:44,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:24:44,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:24:44,314 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-24 15:24:44,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 34 transitions, 167 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:44,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:24:44,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-24 15:24:44,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:24:44,367 INFO L129 PetriNetUnfolder]: 5/35 cut-off events. [2021-03-24 15:24:44,368 INFO L130 PetriNetUnfolder]: For 76/77 co-relation queries the response was YES. [2021-03-24 15:24:44,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 35 events. 5/35 cut-off events. For 76/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 51 event pairs, 0 based on Foata normal form. 3/38 useless extension candidates. Maximal degree in co-relation 122. Up to 8 conditions per place. [2021-03-24 15:24:44,368 INFO L132 encePairwiseOnDemand]: 35/43 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2021-03-24 15:24:44,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 25 transitions, 166 flow [2021-03-24 15:24:44,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:24:44,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:24:44,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2021-03-24 15:24:44,369 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6366279069767442 [2021-03-24 15:24:44,369 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 219 transitions. [2021-03-24 15:24:44,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 219 transitions. [2021-03-24 15:24:44,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:24:44,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 219 transitions. [2021-03-24 15:24:44,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:44,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:44,370 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:44,370 INFO L185 Difference]: Start difference. First operand has 63 places, 34 transitions, 167 flow. Second operand 8 states and 219 transitions. [2021-03-24 15:24:44,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 25 transitions, 166 flow [2021-03-24 15:24:44,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 120 flow, removed 11 selfloop flow, removed 12 redundant places. [2021-03-24 15:24:44,371 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2021-03-24 15:24:44,371 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2021-03-24 15:24:44,371 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2021-03-24 15:24:44,371 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2021-03-24 15:24:44,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:24:44,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-24 15:24:44,375 INFO L202 PluginConnector]: Adding new model ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 03:24:44 BasicIcfg [2021-03-24 15:24:44,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 15:24:44,375 INFO L168 Benchmark]: Toolchain (without parser) took 11269.74 ms. Allocated memory was 255.9 MB in the beginning and 587.2 MB in the end (delta: 331.4 MB). Free memory was 236.6 MB in the beginning and 366.8 MB in the end (delta: -130.1 MB). Peak memory consumption was 202.6 MB. Max. memory is 16.0 GB. [2021-03-24 15:24:44,376 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 15:24:44,376 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.91 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 15:24:44,376 INFO L168 Benchmark]: Boogie Preprocessor took 22.70 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.1 MB in the end (delta: 994.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 15:24:44,376 INFO L168 Benchmark]: RCFGBuilder took 264.14 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 235.3 MB in the end (delta: -1.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. [2021-03-24 15:24:44,376 INFO L168 Benchmark]: TraceAbstraction took 10948.88 ms. Allocated memory was 255.9 MB in the beginning and 587.2 MB in the end (delta: 331.4 MB). Free memory was 234.8 MB in the beginning and 366.8 MB in the end (delta: -132.0 MB). Peak memory consumption was 199.8 MB. Max. memory is 16.0 GB. [2021-03-24 15:24:44,378 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 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.91 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 22.70 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.1 MB in the end (delta: 994.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 264.14 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 235.3 MB in the end (delta: -1.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 10948.88 ms. Allocated memory was 255.9 MB in the beginning and 587.2 MB in the end (delta: 331.4 MB). Free memory was 234.8 MB in the beginning and 366.8 MB in the end (delta: -132.0 MB). Peak memory consumption was 199.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 83.3ms, 45 PlacesBefore, 40 PlacesAfterwards, 32 TransitionsBefore, 27 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 932 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 238, positive: 188, positive conditional: 0, positive unconditional: 188, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 138, positive: 117, positive conditional: 0, positive unconditional: 117, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 138, positive: 117, positive conditional: 0, positive unconditional: 117, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 238, positive: 71, positive conditional: 0, positive unconditional: 71, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 138, unknown conditional: 0, unknown unconditional: 138] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - 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: 9.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 10831.8ms, OverallIterations: 28, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 8999.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 173.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 57 SDtfs, 416 SDslu, 7 SDs, 0 SdLazy, 4445 SolverSat, 656 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2062.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 997.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3690occurred in iteration=16, InterpolantAutomatonStates: 221, 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: 38.5ms SsaConstructionTime, 197.7ms SatisfiabilityAnalysisTime, 1197.4ms InterpolantComputationTime, 756 NumberOfCodeBlocks, 756 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 728 ConstructedInterpolants, 0 QuantifiedInterpolants, 2142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 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...